Change background Edittext in Click Event in android

Screenshot

Create file in Drawable folder

Editbg.xml

<?xml version="1.0" encoding="utf-8"?><selector xmlns:tools="http://schemas.android.com/tools" xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"        android:drawable="@color/colorAccent"/> <!-- pressed -->    <item android:state_focused="true"        android:drawable="@color/colorWhite"/> <!-- focused -->    <item android:drawable="@color/colorAccent" /> <!-- default -->


</selector>



And Use in Your layout xml file 

android:background="@drawable/edit_background"

Android Relative layout example

relativelayout.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_marginTop="30dp">

    <Button
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:gravity="center"
        android:text="1"
        android:textSize="20dp"
        android:id="@+id/button"
        android:layout_alignParentTop="true"
        android:layout_toLeftOf="@+id/button3"
        android:layout_toStartOf="@+id/button3"
        android:background="@drawable/color"
        android:textColor="#fff"/>
    <Button
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_centerHorizontal="true"
        android:gravity="center"
        android:text="2"
        android:textSize="20dp"
        android:id="@+id/button3"
        android:background="@color/colorAccent"
        android:textColor="#fff"/>
    <Button
        android:id="@+id/b3"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:text="3"
        android:textSize="20dp"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/button3"
        android:layout_toEndOf="@+id/button3"
        android:background="@drawable/color"
        android:textColor="#fff"/>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="57dp"
        android:id="@+id/linearLayout"
        android:layout_below="@+id/button"
        android:layout_alignLeft="@+id/button"
        android:layout_alignStart="@+id/button"
        android:layout_alignRight="@+id/b3"
        android:layout_alignEnd="@+id/b3">

        <Button
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:layout_gravity="center"
            android:text="4"
            android:textSize="20dp"
            android:background="@color/colorAccent"
            android:textColor="#fff"/>
        <Button
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:layout_centerHorizontal="true"
            android:gravity="center"
            android:text="5"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"
            />

        <Button
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:layout_gravity="center"
            android:text="7"
            android:background="@color/colorAccent"
            android:textColor="#fff"
            android:textSize="20dp"/>

    </LinearLayout>

    <Button
        android:id="@+id/button4"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:gravity="center"
        android:text="7"
        android:textSize="20dp"
        android:layout_below="@+id/linearLayout"
        android:layout_alignLeft="@+id/linearLayout"
        android:layout_alignStart="@+id/linearLayout"
        android:background="@drawable/color"
        android:textColor="#fff"/>

    <Button
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_below="@+id/linearLayout"
        android:layout_toRightOf="@+id/button4"
        android:layout_toEndOf="@+id/button4"
        android:text="8"
        android:textSize="20dp"
        android:background="@color/colorAccent"
        android:textColor="#fff"/>
    <Button
        android:id="@+id/button5"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_marginLeft="100dp"
        android:layout_marginStart="100dp"
        android:layout_toEndOf="@+id/button4"
        android:layout_toRightOf="@+id/button4"
        android:text="9"
        android:textSize="20dp"
        android:layout_below="@+id/linearLayout"
        android:background="@drawable/color"
        android:textColor="#fff"/>

    <Button
        android:layout_marginTop="20mm"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_alignParentBottom="true"
        android:layout_toRightOf="@+id/button4"
        android:layout_marginBottom="13dp"
        android:textSize="20dp"
        android:text="0"
        android:background="@drawable/color"
        android:textColor="#fff"/>
</RelativeLayout>

Android linear layout example

linear.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:weightSum="4"
    tools:context="com.example.pc.myapplication.MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="horizontal">

        <Button
            android:id="@+id/b1"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="1"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"/>

        <Button
            android:id="@+id/b2"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="2"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"/>

        <Button
            android:id="@+id/b3"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="3"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"/>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="horizontal"
        android:textSize="20dp">

        <Button
            android:id="@+id/b4"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="4"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"/>

        <Button
            android:id="@+id/b5"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="5"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"/>

        <Button
            android:id="@+id/b6"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="6"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"/>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="horizontal">

        <Button
            android:id="@+id/b7"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="7"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"/>

        <Button
            android:id="@+id/b8"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="8"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"/>

        <Button
            android:id="@+id/b9"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="9"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"/>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center"
        android:layout_weight="1"
        android:orientation="horizontal"
        android:paddingLeft="130dp"
        android:paddingRight="130dp">

        <Button
            android:id="@+id/b0"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="0"
            android:textSize="20dp"
            android:background="@drawable/color"
            android:textColor="#fff"/>
    </LinearLayout>

</LinearLayout>

Android Activity example

Android Activity

• onCreate()
• onStart()
• onResume()
• onPause()
• onStop()
• onDestroy

whenever activity call in android into one screen to another screen and activity of screen A and Screen B it display Toast message.

Here we layout click event 

activity_activity.xml

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="@color/colorPrimary"

    android:id="@+id/lay1"

    tools:context="com.example.anshu.intent_example.ActivityA">

</android.support.constraint.ConstraintLayout>

and another 

activity_b.xml

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="@color/colorAccent"

    android:id="@+id/lay2"

    tools:context="com.example.anshu.intent_example.ActivityB">

</android.support.constraint.ConstraintLayout>

ActivityA.java

package com.example.anshu.intent_example;

import android.content.Context;

import android.content.Intent;

import android.os.PersistableBundle;

import android.support.annotation.Nullable;

import android.support.constraint.ConstraintLayout;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.text.Layout;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class ActivityA extends AppCompatActivity {

    ConstraintLayout lay1;

    public Context context;

   //utils ut = new utils();

   //ut.

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_activity);

        lay1 = (ConstraintLayout) findViewById(R.id.lay1);

        lay1.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                Intent i = new Intent(getApplicationContext(),ActivityB.class);

                startActivity(i);

            }

        });

        Toast.makeText(this,"A >> is Created",Toast.LENGTH_SHORT).show();

        //utils utl = new utils();

        //utl.toast("A is Created",);

        //utl.toast("A create ",);

    }

    @Override

    protected void onStart() {

        super.onStart();

        //utils utl = new utils();

        //utl.toast("A create ",this);

        Toast.makeText(this,"A >> is started",Toast.LENGTH_SHORT).show();

        //this.context = c;//Context context;

    }

    @Override

    protected void onResume() {

        super.onResume();

        Toast.makeText(this,"A >> is resume",Toast.LENGTH_SHORT).show();

    }

    @Override

    protected void onPause() {

        super.onPause();

        Toast.makeText(this,"A >> is pause",Toast.LENGTH_SHORT).show();

    }

    @Override

    protected void onStop() {

        super.onStop();

        Toast.makeText(this,"A >> is stop",Toast.LENGTH_SHORT).show();

    }

}

ActivityB.java

package com.example.anshu.intent_example;

import android.content.Context;

import android.content.Intent;

import android.support.constraint.ConstraintLayout;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Toast;

public class ActivityB extends AppCompatActivity {

    ConstraintLayout lay2;

    public Context context;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_b);

        lay2 = (ConstraintLayout) findViewById(R.id.lay2);

        lay2.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                Intent i = new Intent(getApplicationContext(),ActivityA.class);

                startActivity(i);

            }

        });

        Toast.makeText(this,"B >> is Created",Toast.LENGTH_SHORT).show();

    }

    @Override

    protected void onStart() {

        super.onStart();

        Toast.makeText(this,"B >> is Started",Toast.LENGTH_SHORT).show();

    }

    @Override

    protected void onResume() {

        super.onResume();

        Toast.makeText(this,"B >> is Resume",Toast.LENGTH_SHORT).show();

    }

    @Override

    protected void onPause() {

        super.onPause();

        Toast.makeText(this,"B >> is Pause",Toast.LENGTH_SHORT).show();

    }

    @Override

    protected void onStop() {

        super.onStop();

        Toast.makeText(this,"B >> is Stop",Toast.LENGTH_SHORT).show();

    }

    @Override

    protected void onDestroy() {

        super.onDestroy();

        Toast.makeText(this,"B >> is Destroy",Toast.LENGTH_SHORT).show();

    }

}

utils.java

package com.example.anshu.intent_example;

import android.content.Context;

import android.widget.Toast;

public class utils {

   public void toast(String stringmsg, Context mcontext)

   {

       Toast.makeText(mcontext,stringmsg,Toast.LENGTH_SHORT).show();

   }

}

Android Broadcast example

Simple Android broadcast example 



Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

    tools:context="com.example.anshu.broadcast.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Example of Broadcast"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:textSize="30dp" />


    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/button2"
        android:text="Broadcast Intent"
        android:onClick="broadcastIntent"
        android:layout_below="@+id/textView1"
        android:layout_centerHorizontal="true" />

</RelativeLayout>

MainActivity.java

package com.example.anshu.broadcast;

import android.app.Activity;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class MainActivity extends Activity {

    Button b1;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

    b1 = (Button) findViewById(R.id.button2);

    b1.setOnClickListener(new View.OnClickListener() {

        @Override

        public void onClick(View view) {

                Intent intent = new Intent();

                intent.setAction("com.tutorialspoint.CUSTOM_INTENT");

                sendBroadcast(intent);

           

        }

    });

    }

}

MyReceiver.java

package com.example.anshu.broadcast;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.widget.Toast;

/**

 * Created by Anshu on 12/8/2017.

 */

public class MyReceiver extends BroadcastReceiver{

    @Override

    public void onReceive(Context context, Intent intent) {

        Toast.makeText(context,"Intent Detected.",Toast.LENGTH_LONG).show();

    }

}

Android JSON parsing OkHttp and Display in Listview Picasso Library

Screenshots :

URL :- https://api.androidhive.info/json/movies.json


Get data two Image and title from URL 

Step 1 : Create a new project in Android studio IDE File ⇒ New ⇒ Android Application Project and fill all the required details.

Step 2 : In xml file place List view and image view code below.


Step 3 : Add Internet Permission in your project manifest file .
                
    <uses-permission android:name="android.permission.INTERNET" />



 Step 4 : Create XML file named activity_main.xml

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.webbleu8.ok.MainActivity">

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </ListView>

</LinearLayout>

-------------------------------------------------------------------------------------------------------------

STEP 5 :  Create Xml file named custom_item.xml 

custom_item

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:orientation="horizontal">

    <ImageView

        android:id="@+id/image"

        android:layout_width="200dp"

        android:layout_height="100dp"

        android:scaleType="fitXY" />

    <TextView

        android:id="@+id/text"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_gravity="center_vertical"

        android:textColor="#000000" />

</LinearLayout>

------------------------------------------------------------------------------------------------

STEP 6 :  Create Main_activity.java and declare  necessary variables for the list view. 

Main_Activity.java

package com.example.webbleu8.ok;

import android.app.ProgressDialog;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.os.AsyncTask;

import android.os.Bundle;

import android.os.Handler;

import android.support.v7.app.AppCompatActivity;

import android.util.Log;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Adapter;

import android.widget.BaseAdapter;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.Toast;

import com.squareup.picasso.Picasso;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import java.io.IOException;

import java.net.MalformedURLException;

import java.net.URL;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    ArrayList<String> genre = new ArrayList<>();

    ArrayList<model> list;

    ListView listView;

    ProgressDialog pDialog;

    AppAdapter adapter;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        adapter = new AppAdapter();

        pDialog = new ProgressDialog(MainActivity.this);

        list = new ArrayList<>();

        listView = (ListView) findViewById(R.id.listView);

        listView.setAdapter(adapter);

        new GetContacts().execute();

    }

    private class GetContacts extends AsyncTask<Void, Void, Void> {

        String url = "https://api.androidhive.info/json/movies.json";

        String title, image, rating, year;

        @Override

        protected void onPreExecute() {

            super.onPreExecute();

            // Showing progress dialog

            pDialog.setMessage("Please wait...");

            pDialog.setCancelable(false);

            pDialog.show();

        }

        @Override

        protected Void doInBackground(Void... arg0) {

            HttpHandler sh = new HttpHandler();

            // Making a request to url and getting response

            String jsonStr = sh.makeServiceCall(url);

            if (jsonStr != null) {

                try {

                    // Getting JSON Array node

                    JSONArray contacts = new JSONArray(jsonStr);

                    // looping through All Contacts

                    genre.clear();

                    list.clear();

                    for (int i = 0; i < contacts.length(); i++) {

                        JSONObject c = contacts.getJSONObject(i);

                        title = c.getString("title");

                        image = c.getString("image");

                        rating = c.getString("rating");

                        year = c.getString("releaseYear");

                        JSONArray jsonArray = c.getJSONArray("genre");

                       /* for (int j = 0; j < jsonArray.length(); j++) {

genre.add(jsonArray.getString(j));

                        }*/

                        /*System.out.println(" genre  array   " + genre);*/

                        model model = new model();

                        model.setTitle(title);

                        model.setImage(image);

                        list.add(model);

                        System.out.println(" Title     " + title);

                        System.out.println(" rating        " + rating);

                        System.out.println(" release year         " + year);

                        System.out.println("Image            " + image);

                    }

                    Log.d("ARRAY>> ", "" + list.size());

                } catch (final JSONException e) {

                    runOnUiThread(new Runnable() {

                        @Override

                        public void run() {

                            Toast.makeText(getApplicationContext(), "Json parsing error: " + e.getMessage(), Toast.LENGTH_LONG).show();

                        }

                    });

                }

            } else {

                runOnUiThread(new Runnable() {

                    @Override

                    public void run() {

                        Toast.makeText(getApplicationContext(), "Couldn't get json from server. Check LogCat for possible errors!", Toast.LENGTH_LONG).show();

                    }

                });

            }

            return null;

        }

        @Override

        protected void onPostExecute(Void result) {

            super.onPostExecute(result);

            // Dismiss the progress dialog

            if (pDialog.isShowing())

                pDialog.dismiss();

            adapter.notifyDataSetChanged();

            System.out.println("Image_path==================" + image);

        }

    }

    private class AppAdapter extends BaseAdapter {

        @Override

        public int getCount() {

            return list.size();

        }

        @Override

        public model getItem(int position) {

            return list.get(position);

        }

        @Override

        public long getItemId(int position) {

            return position;

        }

        @Override

        public View getView(int position, View convertView, ViewGroup parent) {

            if (convertView == null) {

                convertView = View.inflate(getApplicationContext(), R.layout.custom_item, null);

                new ViewHolder(convertView);

            }

            final ViewHolder holder = (ViewHolder) convertView.getTag();

            final model model = getItem(position);

            holder.text.setText(model.getTitle());

            Picasso.with(getApplicationContext()).load(model.getImage()).into(holder.image);

            return convertView;

        }

        class ViewHolder {

            TextView text;

            ImageView image;

            ViewHolder(View view) {

                text = (TextView) view.findViewById(R.id.text);

                image = (ImageView) view.findViewById(R.id.image);

                view.setTag(this);

            }

        }

    }

}

STEP 7 : Create Model.java class for get perticular data (image, Title)

model.java

package com.example.webbleu8.ok;

public class model {

    String title, image;

    public String getTitle() {

        return title;

    }

    public void setTitle(String title) {

        this.title = title;

    }

    public String getImage() {

        return image;

    }

    public void setImage(String image) {

        this.image = image;

    }

}

Create HTTPURLConnection .java 

HTTPURLConnection.java

package com.example.webbleu8.ok;

import android.util.Log;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.io.UnsupportedEncodingException;

import java.net.HttpURLConnection;

import java.net.URL;

import java.net.URLEncoder;

import java.util.HashMap;

import java.util.Map;

import javax.net.ssl.HttpsURLConnection;

public class HTTPURLConnection

{

    String response="";

    URL url;

    public String ServerData(String path, HashMap<String, String> params)

    {

        try

        {

            url = new URL(path);

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.setReadTimeout(15000);

            conn.setConnectTimeout(15000);

            conn.setRequestMethod("POST");

            conn.setDoInput(true);

            conn.setDoOutput(true);

            OutputStream os = conn.getOutputStream();

            BufferedWriter writer = new BufferedWriter(

                    new OutputStreamWriter(os, "UTF-8"));

            writer.write(getPostDataString(params));

            writer.flush();

            writer.close();

            os.close();

            int responseCode = conn.getResponseCode();

            if (responseCode == HttpsURLConnection.HTTP_OK) {

                String line;

                BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));

                while ((line = br.readLine()) != null) {

                    response += line;

                    Log.d("output lines", line);

                }

            } else {

                response = "";

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

        return response;

    }

    private String getPostDataString(HashMap<String, String> params) throws UnsupportedEncodingException {

        StringBuilder result = new StringBuilder();

        boolean first = true;

        for(Map.Entry<String, String> entry : params.entrySet()){

            if (first)

                first = false;

            else

                result.append("&");

            result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));

            result.append("=");

            result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));

        }

        return result.toString();

    }

}

Create a class HttpHandler.java and fetch particular URL and fetch the response 

HttpHandler.java

package com.example.webbleu8.ok;

import android.util.Log;

import java.io.BufferedInputStream;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.ProtocolException;

import java.net.URL;

public class HttpHandler

{

    private static final String TAG = HttpHandler.class.getSimpleName();

    public HttpHandler() {

    }

    public String makeServiceCall(String reqUrl) {

        String response = null;

        try {

            URL url = new URL(reqUrl);

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.setRequestMethod("GET");

            // read the response

            InputStream in = new BufferedInputStream(conn.getInputStream());

            response = convertStreamToString(in);

        } catch (MalformedURLException e) {

            Log.e(TAG, "MalformedURLException: " + e.getMessage());

        } catch (ProtocolException e) {

            Log.e(TAG, "ProtocolException: " + e.getMessage());

        } catch (IOException e) {

            Log.e(TAG, "IOException: " + e.getMessage());

        } catch (Exception e) {

            Log.e(TAG, "Exception: " + e.getMessage());

        }

        return response;

    }

    private String convertStreamToString(InputStream is)

    {

        BufferedReader reader = new BufferedReader(new InputStreamReader(is));

        StringBuilder sb = new StringBuilder();

        String line;

        try {

            while ((line = reader.readLine()) != null)

            {

                sb.append(line).append('\n');

            }

        }

        catch (IOException e)

        {

            e.printStackTrace();

        } finally

        {

            try

            {

                is.close();

            } catch (IOException e)

            {

                e.printStackTrace();

            }

        }

        return sb.toString();

    }

}

Android webservice celcius to farenheit using KSOAP library

Include the KSOAP2 jar file in to your project. Right click project ⇒ Properties ⇒ Java build path ⇒ Libraries Tab ⇒ Add External Jars ⇒ browse and add KSOAP2 Jar file.

activity_ksoap_test.xml


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.anshu.ksoap.KsoapTestActivity">

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="data" />

    <EditText
        android:id="@+id/cel"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <EditText
        android:id="@+id/cel2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <Button
        android:id="@+id/bt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Calculate" />
</LinearLayout>

KsoapTestActivity.java

package com.example.anshu.ksoap;

import android.os.AsyncTask;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

import android.widget.Toast;

import org.ksoap2.SoapEnvelope;

import org.ksoap2.serialization.SoapObject;

import org.ksoap2.serialization.SoapPrimitive;

import org.ksoap2.serialization.SoapSerializationEnvelope;

import org.ksoap2.transport.HttpTransportSE;

public class KsoapTestActivity extends AppCompatActivity {

    String TAG = "Response";

    Button bt;

    EditText celcius;

    String getCel;

    TextView text;

    SoapPrimitive resultString;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_ksoap_test);

        bt = (Button) findViewById(R.id.bt);

        celcius = (EditText) findViewById(R.id.cel);

        text = (TextView) findViewById(R.id.text);

        bt.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                getCel = celcius.getText().toString();

                AsyncCallWS task = new AsyncCallWS();

                task.execute();

            }

        });

    }

    private class AsyncCallWS extends AsyncTask<Void, Void, Void> {

        @Override

        protected void onPreExecute() {

            Log.i(TAG, "onPreExecute");

        }

        @Override

        protected Void doInBackground(Void... params) {

            Log.i(TAG, "doInBackground");

            calculate();

            return null;

        }

        @Override

        protected void onPostExecute(Void result) {

            Log.i(TAG, "onPostExecute");

            text.setText(resultString.toString());

            //Toast.makeText(KsoapTestActivity.this, "Response is :" + resultString.toString(), Toast.LENGTH_LONG).show();

        }

    }

    private void calculate() {

        String SOAP_ACTION = "https://www.w3schools.com/xml/CelsiusToFahrenheit";

        String METHOD_NAME = "CelsiusToFahrenheit";

        String NAMESPACE = "https://www.w3schools.com/xml/";

        String URL = "https://www.w3schools.com/xml/tempconvert.asmx";

        try {

            SoapObject Request = new SoapObject(NAMESPACE, METHOD_NAME);

            Request.addProperty("Celsius", getCel);

            SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

            soapEnvelope.dotNet = true;

            soapEnvelope.setOutputSoapObject(Request);

            HttpTransportSE transport = new HttpTransportSE(URL);

            transport.call(SOAP_ACTION, soapEnvelope);

            resultString = (SoapPrimitive) soapEnvelope.getResponse();

            Log.i(TAG, "Result Celsius: " + resultString);

        } catch (Exception ex) {

            Log.e(TAG, "Error: " + ex.getMessage());

        }

    }

}

WebserviceCall.java

package com.example.anshu.ksoap;

import org.ksoap2.SoapEnvelope;

import org.ksoap2.serialization.PropertyInfo;

import org.ksoap2.serialization.SoapObject;

import org.ksoap2.serialization.SoapSerializationEnvelope;

import org.ksoap2.transport.AndroidHttpTransport;

/**

 * Created by Anshu on 21-Dec-17.

 */

class WebserviceCall {

    String namespace = " http://www.webserviceX.NET/";

    private String url = "http://www.webservicex.net/ConvertWeight.asmx";

    String SOAP_ACTION;

    SoapObject request = null, objMessages = null;

    SoapSerializationEnvelope envelope;

    AndroidHttpTransport androidHttpTransport;

    WebserviceCall() {

    }

    protected void SetEnvelope() {

        try {

            // Creating SOAP envelope

            envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

            //You can comment that line if your web service is not .NET one.

            envelope.dotNet = true;

            envelope.setOutputSoapObject(request);

            androidHttpTransport = new AndroidHttpTransport(url);

            androidHttpTransport.debug = true;

        } catch (Exception e) {

            System.out.println("Soap Exception---->>>" + e.toString());

        }

    }

    public String getConvertedWeight(String MethodName, String weight, String fromUnit, String toUnit) {

        try {

            SOAP_ACTION = namespace + MethodName;

            //Adding values to request object

            request = new SoapObject(namespace, MethodName);

            //Adding Double value to request object

            PropertyInfo weightProp =new PropertyInfo();

            weightProp.setName("Weight");

            weightProp.setValue(weight);

            weightProp.setType(double.class);

            request.addProperty(weightProp);

            //Adding String value to request object

            request.addProperty("FromUnit", "" + fromUnit);

            request.addProperty("ToUnit", "" + toUnit);

            SetEnvelope();

            try {

                //SOAP calling webservice

                androidHttpTransport.call(SOAP_ACTION, envelope);

                //Got Webservice response

                String result = envelope.getResponse().toString();

                return result;

            } catch (Exception e) {

                // TODO: handle exception

                return e.toString();

            }

        } catch (Exception e) {

            // TODO: handle exception

            return e.toString();

        }

    }

}

splash screen and shared preference in android

Screenshots

Designing part of splash screen and shared preference in android 


splashfile.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:gravity="center"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/logo_id"
        android:layout_width="300dp"
        android:layout_height="700dp"
        android:layout_centerInParent="true"
        android:src="@drawable/aaa"/>



</RelativeLayout>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context="com.example.anshu.sharedpreference.MainActivity">

    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:inputType="textPersonName"

        android:ems="10"

        android:id="@+id/etName"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="75dp"

        android:hint="Enter Name" />

    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:inputType="textPassword"

        android:ems="10"

        android:id="@+id/etPassword"

        android:layout_below="@+id/etName"

        android:layout_centerHorizontal="true"

        android:hint="Enter Password" />

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Login"

        android:id="@+id/btnLogin"

        android:layout_below="@+id/etPassword"

        android:layout_alignLeft="@+id/etPassword"

        android:layout_alignStart="@+id/etPassword" />

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Register"

        android:id="@+id/btnRegister"

        android:layout_alignTop="@+id/btnLogin"

        android:layout_toRightOf="@+id/btnLogin"

        android:layout_toEndOf="@+id/btnLogin" />

    <TextView

        android:id="@+id/textView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="18dp"

        android:textSize="30dp"

        android:text="Login" />

</RelativeLayout>

register.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:inputType="textPersonName"

        android:ems="10"

        android:id="@+id/etNewName"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="58dp"

        android:hint="Enter Username" />

    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:inputType="textPassword"

        android:ems="10"

        android:id="@+id/etNewPassword"

        android:layout_below="@+id/etNewName"

        android:layout_centerHorizontal="true"

        android:hint="Enter Password" />

    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:inputType="textPassword"

        android:ems="10"

        android:id="@+id/etcompassword"

        android:layout_below="@+id/etNewPassword"

        android:layout_centerHorizontal="true"

        android:hint="Re Enter Password" />

    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:id="@+id/etNewEmail"

        android:layout_below="@+id/etcompassword"

        android:layout_alignLeft="@+id/etNewPassword"

        android:layout_alignStart="@+id/etNewPassword"

        android:layout_alignRight="@+id/etNewPassword"

        android:layout_alignEnd="@+id/etNewPassword"

        android:hint="Enter Name" />

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Register"

        android:id="@+id/btnNewRegister"

        android:layout_below="@+id/etNewEmail"

        android:layout_centerHorizontal="true" />

    <TextView

        android:id="@+id/textView"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/btnNewRegister"

        android:layout_alignParentTop="true"

        android:layout_alignStart="@+id/btnNewRegister"

        android:text="Sign up"

        android:textSize="30dp" />

</RelativeLayout>

display_info

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:weightSum="1">

    <TextView

        android:textSize="20sp"

        android:textStyle="bold"

        android:layout_width="150dp"

        android:layout_height="50dp"

        android:text="New Text"

        android:id="@+id/textViewName"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="121dp" />

    <TextView

        android:id="@+id/textViewName2"

        android:layout_width="150dp"

        android:layout_height="50dp"

        android:layout_alignLeft="@+id/textViewName"

        android:layout_alignStart="@+id/textViewName"

        android:layout_below="@+id/textViewName"

        android:layout_marginTop="25dp"

        android:text="New Text"

        android:textSize="20sp"

        android:textStyle="bold" />

    <Button

        android:layout_width="150dp"

        android:layout_height="50dp"

        android:textSize="20dp"

        android:text="Logout"

        android:layout_alignParentTop="true"

        android:layout_alignParentRight="true"

        android:id="@+id/logout"/>

</RelativeLayout>

----------------------------------------------------------------------------------------------------------------------

Coding part of  splash screen and shared preference in android 

SplashActivity.java

package com.example.anshu.sharedpreference;

import android.app.Activity;

import android.content.Intent;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.os.Handler;

/**

 * Created by Anshu on 12/13/2017.

 */

public class SplashActivity extends Activity {

    SharedPreferences sharedpreferences;

    public static String str_login_test;

    Handler handler;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.splashfile);

        handler=new Handler();

        handler.postDelayed(new Runnable() {

            @Override

            public void run() {

        SharedPreferences preferences = getSharedPreferences("MYPREFS", MODE_PRIVATE);

        str_login_test = preferences.getString("Username","");

        final String userName = preferences.getString("Username", "");

        final String password1 = preferences.getString("Password", "");

        if (!userName.equalsIgnoreCase("") && !password1.equalsIgnoreCase("")) {

            startActivity(new Intent(SplashActivity.this, DisplayScreen.class));

            finish();

        }

        else {

            Intent SplashActivity = new Intent(SplashActivity.this, MainActivity.class);

            startActivity(SplashActivity);

            finish();

        }

        /*

        final String userName = preferences.getString("Username", "");

        final String password1 = preferences.getString("Password", "");

*/

                /*Intent intent=new Intent(SplashActivity.this,MainActivity.class);

                startActivity(intent);*/

                //finish();

            }

        },3000);

    }

}

MainActivity

package com.example.anshu.sharedpreference;

import android.content.Context;

import android.content.Intent;

import android.content.SharedPreferences;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.KeyEvent;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    EditText etName, etPassword;

    Button btnLogin, btnRegister;

    SharedPreferences sharedpreferences;

    String userName,password1,email;

    public static final String MyPREFERENCES = "MyPrefs";

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        etName = (EditText) findViewById(R.id.etName);

        etPassword = (EditText) findViewById(R.id.etPassword);

        etPassword.setOnEditorActionListener(new TextView.OnEditorActionListener() {

            @Override

            public boolean onEditorAction(TextView textView, int i, KeyEvent keyEvent) {

                return false;

            }

        });

        btnLogin = (Button) findViewById(R.id.btnLogin);

        sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);

        btnRegister = (Button) findViewById(R.id.btnRegister);

        SharedPreferences preferences = getSharedPreferences("MYPREFS", MODE_PRIVATE);

//                String userDetails = preferences.getString(user + password + "data","No information on that user.");

//                SharedPreferences.Editor editor = preferences.edit();

//                editor.putString("display",userDetails);

//                editor.commit();

         userName = preferences.getString("Username", "");

         password1 = preferences.getString("Password", "");

         email = preferences.getString("email", "");

        /*if (!userName.equalsIgnoreCase("") && !password1.equalsIgnoreCase("")){

            startActivity(new Intent(MainActivity.this,DisplayScreen.class));

            finish();

        }*/

        btnLogin.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                String user = etName.getText().toString();

                String password = etPassword.getText().toString();

                if (etName.getText().toString().trim().length() == 0) {

                    etName.setError("User Name is not entered");

                    etName.requestFocus();

                } else if (etPassword.getText().toString().trim().length() == 0) {

                    etPassword.setError("Password is not entered");

                    etPassword.requestFocus();

                } else if (!userName.equals(user)) {

                    Toast.makeText(MainActivity.this, "UserName does not match", Toast.LENGTH_SHORT).show();

                } else if (!password1.equals(password)) {

                    Toast.makeText(MainActivity.this, "Password does not match", Toast.LENGTH_SHORT).show();

                } else {

                    startActivity(new Intent(MainActivity.this, DisplayScreen.class));

                }

                /*else {

                    Intent intent = new Intent(getApplicationContext(),DisplayScreen.class);

                    startActivity(intent);

                }*/

                /*Intent displayScreen = new Intent(MainActivity.this, DisplayScreen.class);

                startActivity(displayScreen);*/

                /*loginCheck();*/

            }

        });

        btnRegister.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                Intent registerScreen = new Intent(MainActivity.this, Register.class);

                startActivity(registerScreen);

            }

        });

    }

    //Important

     /*void loginCheck() {

        if (etName.getText().toString().equals("Anshu") && etPassword.getText().toString().equals("Anshu1"))

        {

            SharedPreferences.Editor e=sp.edit();

            e.putString("etName","Anshu");

            e.putString("etPassword","Anshu1");

            e.commit();

            Toast.makeText(MainActivity.this,"Login Sucessful",Toast.LENGTH_SHORT).show();

            startActivity(new Intent(MainActivity.this,DisplayScreen.class));

            finish();

        }

        else {

            Toast.makeText(MainActivity.this,"Incorrect Login Details",Toast.LENGTH_SHORT).show();

       */

}

Register.java

package com.example.anshu.sharedpreference;

import android.content.Intent;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

/**

 * Created by Anshu on 12/13/2017.

 */

public class Register extends AppCompatActivity {

    EditText username, password, reenterpass, email;

    Button btnRegister;

    SharedPreferences preferences;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.register);

        init();

    }

    private void init() {

        username = (EditText) findViewById(R.id.etNewName);

        reenterpass = (EditText) findViewById(R.id.etcompassword);

        password = (EditText) findViewById(R.id.etNewPassword);

        email = (EditText) findViewById(R.id.etNewEmail);

        btnRegister = (Button) findViewById(R.id.btnNewRegister);

        preferences = getSharedPreferences("MYPREFS", MODE_PRIVATE);

        btnRegister.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                validation();

            }

        });

    }

    private void validation() {

        if (username.getText().toString().length() == 0) {

            username.setError("User name is Required");

        } else if (password.getText().toString().length() == 0) {

            password.setError("Password Required");

        } else if (reenterpass.getText().toString().length() == 0) {

            reenterpass.setError("Password Required");

        } else if (email.getText().toString().length() == 0) {

            email.setError("Email is Requied");

        } else if (!password.getText().toString().trim().equals(reenterpass.getText().toString())) {

            Toast.makeText(Register.this, "Password Not Match", Toast.LENGTH_SHORT).show();

        } else {

            //After Register it will be redirect to login page

            String newUser = username.getText().toString();

            String newPassword = password.getText().toString();

            String newEmail = email.getText().toString();

            SharedPreferences.Editor editor = preferences.edit();

            editor.putString("Username", newUser);

            editor.commit();

            editor.putString("Password", newPassword);

            editor.commit();

            editor.putString("email", newEmail);

            editor.commit();

            Intent MainActivity = new Intent(Register.this, MainActivity.class);

            startActivity(MainActivity);

        }

    }

}

DisplayScreen.java

package com.example.anshu.sharedpreference;

import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;

import java.util.jar.Attributes;

/**

 * Created by Anshu on 12/13/2017.

 */

public class DisplayScreen extends Activity implements View.OnClickListener {

    String name1,email;

    TextView UserName,name;

    SharedPreferences preferences;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.display_info);

        Button logout = (Button) findViewById(R.id.logout);

        logout.setOnClickListener(this);

        SharedPreferences preferences = getSharedPreferences("MYPREFS", MODE_PRIVATE);

        String display = preferences.getString("Username", "");

        String display1 = preferences.getString("email", "");

   /*     String display1 = preferences.getString("email", "");

*/

        /*StringBuilder builder = new StringBuilder();

        builder.append("UserName : "+UserName);*/

        TextView displayInfo = (TextView) findViewById(R.id.textViewName);

        displayInfo.setText(display);

        TextView Displayinfo1 = (TextView) findViewById(R.id.textViewName2);

        Displayinfo1.setText(display1);

        /*TextView displayInfo1 = (TextView) findViewById(R.id.etNewEmail);

        displayInfo1.setText(display1);*/

    }

    @Override

    public void onClick(View view) {

        SharedPreferences preferences = getSharedPreferences("MYPREFS", MODE_PRIVATE);

                    /*preferences.edit().clear().commit();*/

        SharedPreferences.Editor editor = preferences.edit();

        Toast.makeText(DisplayScreen.this, "You Have Sucessfullylogout", Toast.LENGTH_SHORT).show();

        editor.clear();

        //editor.apply();

        editor.commit();

                    /*editor.commit();*/

        Intent DisplayScreen = new Intent(getApplicationContext(), MainActivity.class);

        startActivity(DisplayScreen);

    }

}