Broadcast Receiver : Dynamic Registration

BR_Dynamic_Reg

//SingleBroadcast.java

package course.examples.BroadcastReceiver.SingleBroadcastDynamicRegistration;

import android.app.Activity;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.support.v4.content.LocalBroadcastManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class SingleBroadcast extends Activity {

//1. Create fields for the Intent, IntentFilter and receiver
	private static final String CUSTOM_INTENT = "course.examples.BroadcastReceiver.show_toast";
	private final IntentFilter intentFilter = new IntentFilter(CUSTOM_INTENT);
	private final Receiver receiver = new Receiver();

//2.  Create a field for the local broadcaster manager (LBM)
	private LocalBroadcastManager mBroadcastMgr;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

//3.  onCreate getInstance of LBM and register the receiver to it.  
		mBroadcastMgr = LocalBroadcastManager.getInstance(getApplicationContext());
		mBroadcastMgr.registerReceiver(receiver, intentFilter);

		setContentView(R.layout.main);

		Button button = (Button) findViewById(R.id.button);
		button.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
//4. Send the broadcast
				mBroadcastMgr.sendBroadcast(new Intent(CUSTOM_INTENT));
			}
		});
	}

	@Override
//5. Create a method to destroy/unregister the receiver
	protected void onDestroy() {
		mBroadcastMgr.unregisterReceiver(receiver);
		super.onDestroy();
	}
}

=============================================================
//Rceiver.java
package course.examples.BroadcastReceiver.SingleBroadcastDynamicRegistration;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Vibrator;
import android.util.Log;
import android.widget.Toast;

//1. Extend the BrodacastReceiver
public class Receiver extends BroadcastReceiver {
	private final String TAG = "Receiver";

	@Override
//2.  Create onReceive method to receive the Intent
	public void onReceive(Context context, Intent intent) {

		Log.i(TAG, "INTENT RECEIVED");

//3. Do stuff
		Vibrator v = (Vibrator) context
				.getSystemService(Context.VIBRATOR_SERVICE);
		v.vibrate(500);
		
		Toast.makeText(context, "INTENT RECEIVED by Receiver", Toast.LENGTH_LONG).show();

	}

}

=============================================================
//AndroidManifest.xml -- Doesn't require anything like a Static BR!!!

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="course.examples.BroadcastReceiver.SingleBroadcastDynamicRegistration"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="18" />

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

    <application
        android:allowBackup="false"
        android:icon="@drawable/icon"
        android:label="@string/app_name" >
        <activity android:name=".SingleBroadcast" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>
===============================
// example xml layout
<?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" >

    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="150dip"
        android:text="Broadcast Intent"
        android:textSize="24sp" >
    </Button>

</LinearLayout>