Android broadcast广播机制的使用

package com.jluzh.ex06; import java.io.IOException; import android.app.Activity; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.media.MediaPlayer; import android.os.Bundle; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast; public class BroadDemo extends Activity implements OnClickListener{ /** Called when the activity is first created. */ public Button button1 , button2 , button3 ; public static final String TAG="BroadcastActivity"; public static final String INTENAL_ACTION_1 = "first_broadcast"; public static final String INTENAL_ACTION_2 = "music"; public static final String INTENAL_ACTION_3 = "Notification"; public MediaPlayer mp; public NotificationManager mNotificationManager; public Notification notification; Broad receiver ; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); receiver = new Broad(); button1 = (Button)findViewById(R.id.button1); button2 = (Button)findViewById(R.id.button2); button3 = (Button)findViewById(R.id.button3); button1.setOnClickListener(this); button2.setOnClickListener(this); button3.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub if(v.getId() == R.id.button1){ Intent intent = new Intent(INTENAL_ACTION_1); sendBroadcast(intent); //发送广播1 } if(v.getId() == R.id.button2){ Intent intent1 = new Intent(INTENAL_ACTION_2); sendBroadcast(intent1); //发送广播2 } if(v.getId() == R.id.button3){ Intent intent2 = new Intent(INTENAL_ACTION_3); sendBroadcast(intent2); //发送广播3 } } @Override protected void onStart() { //动态注册广播 // TODO Auto-generated method stub super.onStart(); IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(INTENAL_ACTION_1); intentFilter.addAction(INTENAL_ACTION_2); intentFilter.addAction(INTENAL_ACTION_3); registerReceiver(receiver, intentFilter); } @Override protected void onStop() { //取消注册广播 // TODO Auto-generated method stub super.onStop(); unregisterReceiver(receiver); // Log.v("stop", "stop"); } //定义内部类 class Broad extends BroadcastReceiver{ @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub String action = intent.getAction(); Toast.makeText(BroadDemo.this, "广播接收消息"+action, Toast.LENGTH_SHORT).show(); Log.v(TAG, "send "+action); if(action.equals(INTENAL_ACTION_2)){ mp = MediaPlayer.create(BroadDemo.this, R.raw.midi077); Log.v("tag", "ssss"); try { mp.prepare(); } catch (IllegalStateException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } mp.start(); } if(action.equals(INTENAL_ACTION_3)){ mNotificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE); notification = new Notification(R.drawable.icon, "滚动提示信息", System.currentTimeMillis()); Context context1 = getApplicationContext(); CharSequence contenttile = "您好"; CharSequence contenttext = "您选中了显示提示"; Intent notifyIntent = new Intent(android.content.Intent.ACTION_VIEW); PendingIntent intent4 = PendingIntent.getActivity(BroadDemo.this, 0, notifyIntent, android.content.Intent.FLAG_ACTIVITY_NEW_TASK); //实现跳转，启动一个新的Activity notification.setLatestEventInfo(context1, contenttile, contenttext, intent4); //发送通知 mNotificationManager.notify(4, notification); } } } }