Practical 21
1. Write a program to demonstrate all system broadcast
Step 1: Create two different android projects namely i] MyApplication
ii] MyBroadcastReceiver
Project 1-MyApplication
XML CODE: JAVA CODE:
<?xml version="1.0" encoding="utf-8"?> package com.example.myapplication;
<RelativeLayout import android.app.Activity;
xmlns:android="http://schemas.android.com/apk/res/an import android.os.Bundle;
droid" import android.annotation.SuppressLint;
xmlns:app="http://schemas.android.com/apk/res- import android.content.Intent;
auto" import android.view.View;
xmlns:tools="http://schemas.android.com/tools" import android.widget.Button;
android:layout_width="match_parent" public class MainActivity extends Activity {
android:layout_height="match_parent" @SuppressLint("MissingInflatedId")
android:padding="32dp" @Override
tools:context=".MainActivity"> public void onCreate(Bundle savedInstanceState){
<Button super.onCreate(savedInstanceState);
android:id="@+id/button" setContentView(R.layout.activity_main);
android:layout_width="fill_parent" }
android:layout_height="wrap_content" public void onBroadcastsendbtnclicked(View v){
android:layout_alignParentTop="true" Intent intent=new Intent();
android:layout_marginTop="190dp"
android:onClick="onBroadcastsendbtnclicked" intent.setAction("com.example.MyBroadcastMessage");
android:text="Broadcast Intent" /> sendBroadcast(intent);
</RelativeLayout> }
Project 2 – MyBroadcastReceiver
MAIN_ACTIVITY JAVA CODE: MYBROADCASTRECEIVER JAVA CODE
package com.example.mybroadcastreceiver; package com.example.mybroadcastreceiver;
import androidx.appcompat.app.AppCompatActivity; import android.content.BroadcastReceiver;
import android.content.IntentFilter; import android.content.Context;
import android.os.Bundle; import android.content.Intent;
public class MainActivity extends AppCompatActivity { import android.util.Log;
@Override import android.widget.Toast;
protected void onCreate(Bundle savedInstanceState) { public class MyBroadcastReceiver extends BroadcastReceiver {
super.onCreate(savedInstanceState); @Override
setContentView(R.layout.activity_main); public void onReceive(Context context, Intent intent) {
IntentFilter intentFilter=new Log.i("Broadcast Receiver","Broadcast message is
IntentFilter("com.example.MyBroadcastMessage"); received");
MyBroadcastReceiver obj=new MyBroadcastReceiver(); Toast.makeText(context,"Broadcast Message is receive",
registerReceiver(obj,intentFilter); Toast.LENGTH_LONG).show();
}} }}
Practical 21
Androidmanifest.XML CODE
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.MyBroadcastReceiver"
tools:targetApi="31">
<receiver
android:name=".MyBroadcastReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="com.example.MyBroadcastMessage">
</action>
</intent-filter>
</receiver>
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
INSTRUCTIONS:
STEP 1: First run the main application file.
STEP 2: Then run my broadcast receiver file.
STEP 3: Rerun the main application file.
NOTE:
RUN BOTH FILES IN SIMULTANEOUS TABS.
