android Set the Wallpaper of Your Device using Bitmap Class

In this Tutorial Today Learn Set the Wallpaper of Devices in Android Studio.

so let's start a Tutorial Set the Wallpaper of Your Device.

1.MainActivity.java:

import android.os.Bundle;

import android.app.Activity;

import android.content.Intent;

import android.view.Menu;

import android.view.View;

import android.widget.Button;

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button button =(Button) findViewById(R.id.button1);

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

startActivity(new Intent("com.example.backgroundapp.bakapp"));

}

});

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

2.bakapp.java:

import java.io.IOException;

import java.io.InputStream;

import android.app.Activity;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.os.Bundle;

import android.view.View;

import android.view.Window;

import android.view.WindowManager;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.Toast;

public class bakapp extends Activity implements OnClickListener {

ImageView display;

int tophone;

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

// to our activity to cover the whole screen

requestWindowFeature(Window.FEATURE_NO_TITLE);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);

setContentView(R.layout.back);

Button but = (Button) findViewById(R.id.setwallpaper);

tophone = R.drawable.image4;

but.setOnClickListener(this);

display = (ImageView) findViewById(R.id.ivdisplay);

ImageView image1 = (ImageView) findViewById(R.id.IVimage1);

ImageView image2 = (ImageView) findViewById(R.id.IVimage2);

ImageView image3 = (ImageView) findViewById(R.id.IVimage3);

ImageView image4 = (ImageView) findViewById(R.id.image4);

ImageView image5 = (ImageView) findViewById(R.id.IVimage5);

image1.setOnClickListener(this);

image2.setOnClickListener(this);

image3.setOnClickListener(this);

image4.setOnClickListener(this);

image5.setOnClickListener(this);

}

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

Toast var;

switch (v.getId()) {

case R.id.IVimage1:

display.setImageResource(R.drawable.image4);

var = Toast.makeText(bakapp.this, "image changed",

Toast.LENGTH_SHORT);

var.show();

tophone = R.drawable.image4;

break;

case R.id.IVimage2:

display.setImageResource(R.drawable.image5);

var = Toast.makeText(bakapp.this, "image changed",

Toast.LENGTH_SHORT);

var.show();

tophone = R.drawable.image5;

break;

case R.id.IVimage3:

display.setImageResource(R.drawable.image6);

var = Toast.makeText(bakapp.this, "image changed",

Toast.LENGTH_SHORT);

var.show();

tophone = R.drawable.image6;

break;

case R.id.image4:

display.setImageResource(R.drawable.image7);

var = Toast.makeText(bakapp.this, "image changed",

Toast.LENGTH_SHORT);

var.show();

tophone = R.drawable.image7;

break;

case R.id.IVimage5:

display.setImageResource(R.drawable.image8);

var = Toast.makeText(bakapp.this, "image changed",

Toast.LENGTH_SHORT);

var.show();

tophone = R.drawable.image8;

break;

case R.id.setwallpaper:

// to set a background we need to use bitmap

InputStream is = getResources().openRawResource(tophone);

// to phone is a variable that is updated everytime we click on an

// ImageView to that imageview resource and by clicking the button

// we set the phone background to that image.

Bitmap bm = BitmapFactory.decodeStream(is);

// decode inputstream is

try {

getApplicationContext().setWallpaper(bm);

// to set the wallpaper of the phone background we need to ask

// permission from the user so add permission of background from

// manifest file

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

var = Toast.makeText(bakapp.this, "Wallpaper image changed",

Toast.LENGTH_SHORT);

var.show();

break;

}

3.activity_main.xml:

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

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

android:layout_width="match_parent"

android:layout_height="match_parent"

android:paddingBottom="@dimen/activity_vertical_margin"

android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

tools:context=".MainActivity" >

<TextView

android:id="@+id/textView1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Application to Change background picture of device"

android:textSize="30dp" />

<Button

android:id="@+id/button1"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_alignParentBottom="true"

android:layout_marginBottom="96dp"

android:text="Click to launch" />

</RelativeLayout>

4.Backapp.xml:

<?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="match_parent"

android:orientation="vertical" >

<ImageView

android:id="@+id/ivdisplay"

android:layout_width="200dp"

android:layout_height="200dp"

android:layout_gravity="center"

android:src="@drawable/image4" />

<Button

android:id="@+id/setwallpaper"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="set image background" >

</Button>

<HorizontalScrollView

android:layout_width="200dp"

android:layout_height="wrap_content"

android:layout_gravity="center" >

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:orientation="horizontal">

<ImageView

android:id="@+id/IVimage1"

android:layout_width="125dp"

android:layout_height="125dp"

android:padding="15dp"

android:src="@drawable/image4" />

<ImageView

android:id="@+id/IVimage2"

android:layout_width="125dp"

android:layout_height="125dp"

android:padding="15dp"

android:src="@drawable/image5" />

<ImageView

android:id="@+id/IVimage3"

android:layout_width="125dp"

android:layout_height="125dp"

android:padding="15dp"

android:src="@drawable/image6" />

<ImageView

android:id="@+id/image4"

android:layout_width="125dp"

android:layout_height="125dp"

android:padding="15dp"

android:src="@drawable/image7" />

<ImageView

android:id="@+id/IVimage5"

android:layout_width="125dp"

android:layout_height="125dp"

android:padding="15dp"

android:src="@drawable/image8" />

</LinearLayout>

</HorizontalScrollView>

</LinearLayout>

5.AndroidManifest:

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

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

package="com.example.backgroundapp"

android:versionCode="1"

android:versionName="1.0" >

<uses-sdk

android:minSdkVersion="8"

android:targetSdkVersion="17" />

<uses-permission android:name="android.permission.SET_WALLPAPER"/>

<application

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme" >

<activity

android:name="com.example.backgroundapp.MainActivity"

android:label="@string/app_name" >

<intent-filter>

</intent-filter>

</activity>

<activity

android:name="com.example.backgroundapp.bakapp"

android:label="@string/app_name"

android:screenOrientation="portrait">

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

Android Tutorial

Saturday, 21 May 2022

android Set the Wallpaper of Your Device using Bitmap Class