Broadcast Receiver In Android

Broadcast Receiver

Broadcast receivers responds to the broadcast messages to the system itself. for example if you plugged in your ear phone to your mobile it will show you a message that ear phones are plugged in.

There are two important steps, they are:

1. Creating the broadcast receiver.
2. Registering the broadcast receiver.

Creating the broadcast receiver:

• Create a class called Receiver, right click on java->New->Java class->main->class name as Receiver.
• Extend a BroadcastReceiver in Receiver class.
• Override a method called onReceive(), by hitting ctrl+o in the class Receiver.

public class Receiver extends BroadcastReceiver {
    @Override    public void onReceive(Context context, Intent intent) {
    }
}

Register Broadcast receiver in Mainfest.

<receiver android:name=".Receiver">
    <intent-filter>
        <action android:name="android.intent.action.AIRPLANE_MODE"/>

    </intent-filter>
</receiver>



Example:

Create a new project, we have do changes only in Manifest and Java class no need to design in xml.
Create a new java class as Receiver and do the following.

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

/** * Created by HSS-24 on 2/17/2016. */

public class Receiver extends BroadcastReceiver {
    @Override    public void onReceive(Context context, Intent intent) {
        Toast.makeText(context,"Airplane mode on",Toast.LENGTH_LONG).show();
    }
}



Register in Manifest

<activity android:name=".MainActivity">

<intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name=".Receiver">
            <intent-filter>
                <action android:name="android.intent.action.AIRPLANE_MODE"/>

            </intent-filter>
        </receiver>
    </application>

</manifest>



Now when you hit the Airplane mode in your mobile to switch on or off it should show a toast as Airplane mode on
Run the App.

Output:







Thank You!!!

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