Android註冊廣播的方式(一)

MainActivity如下:

package cc.testbroadcasta;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.content.IntentFilter;
/**
 * Demo描述:
 * 在代碼中註冊廣播接收者
 * 1 在onCreate()中註冊廣播接收者
 * 2 在onDestroy()中取消註冊廣播接收者
 */
public class MainActivity extends Activity {
    private BroadcastReceiverTest mBroadcastReceiverTest;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		//註冊一個廣播接收者
		registerAReceiver();
		//發送一個廣播
		sendABroadcast();
	}
	
	private void registerAReceiver(){
		mBroadcastReceiverTest=new BroadcastReceiverTest();
		//為廣播接收者設置IntentFilter
		IntentFilter intentFilter=new IntentFilter();
		intentFilter.addAction("cc.test");
		registerReceiver(mBroadcastReceiverTest, intentFilter);
	}
	
	private void sendABroadcast(){
		Intent intent = new Intent();
		// 設置Action
		intent.setAction("cc.test");
		// 攜帶數據
		intent.putExtra("name", "周星馳");
		intent.putExtra("number", 9527);
		// 發送廣播
		sendBroadcast(intent);
	}
	
	@Override
	protected void onDestroy() {
		super.onDestroy();
		//取消廣播接收者的註冊
		if (mBroadcastReceiverTest!=null) {
			unregisterReceiver(mBroadcastReceiverTest);
		}
	}

}

BroadcastReceiverTest如下:

package cc.testbroadcasta;

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

public class BroadcastReceiverTest extends BroadcastReceiver {

	@Override
	public void onReceive(Context context, Intent intent) {
          String name=intent.getStringExtra("name");
          int number=intent.getIntExtra("number", 0);
          System.out.println("接收到廣播 name="+name+",number="+number);
	}

	
	public static void main(String[] args) {

	}

}

main.xml如下: