(android 基础知识) PendingIntent

超、凢脫俗 2024-04-20 11:14 77阅读 0赞

**PendingIntent介绍**  
PendingIntent可以看作是对Intent的一个封装，但它不是立刻执行某个行为，而是满足某些条件或触发某些事件后才执行指定的行为。  
**PendingIntent举例**  
1. 发送短信  
import android.app.Activity;  
import android.app.PendingIntent;  
import android.content.BroadcastReceiver;  
import android.content.Context;  
import android.content.Intent;  
import android.content.IntentFilter;  
import android.os.Bundle;  
import android.telephony.SmsManager;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
import android.widget.Toast;  
  
public class Test1Activity extends Activity implements OnClickListener \{  
private Button btn1 = null;  
private SmsManager sm = null;  
private IntentFilter sendIntentFilter = null;  
private SmsBroadcastReceiver sendReceiver = null;  
private IntentFilter deliverIntentFilter = null;  
private SmsBroadcastReceiver deliverReceiver = null;  
  
@Override  
public void onCreate(Bundle savedInstanceState) \{  
super.onCreate(savedInstanceState);  
setContentView(R.layout.main);  
  
btn1 = (Button) this.findViewById(R.id.btn1);  
btn1.setOnClickListener(this);  
  
sm = SmsManager.getDefault();  
  
sendIntentFilter = new IntentFilter("send\_sms");  
sendReceiver = new SmsBroadcastReceiver();  
this.registerReceiver(sendReceiver, sendIntentFilter);  
  
deliverIntentFilter = new IntentFilter("deliver\_sms");  
deliverReceiver = new SmsBroadcastReceiver();  
this.registerReceiver(deliverReceiver, deliverIntentFilter);  
\}  
@Override  
public void onClick(View v) \{  
switch(v.getId()) \{  
case R.id.btn1:  
send\_sms();  
break;  
default:  
break;  
\}  
\}  
private void send\_sms() \{  
String destinationAddress = "1341024977";  
String text = "宝贝";  
  
Intent sIntent = new Intent("send\_sms");  
PendingIntent sentIntent = PendingIntent.getBroadcast(this, 0, sIntent, 0);//短信成功发送后才发送该广播  
  
Intent dIntent = new Intent("deliver\_sms");  
PendingIntent deliveryIntent = PendingIntent.getBroadcast(this, 1, dIntent, 0);//短信成功接收后才发送该广播  
  
sm.sendTextMessage(destinationAddress, null, text, sentIntent, deliveryIntent);  
\}  
private class SmsBroadcastReceiver extends BroadcastReceiver \{  
@Override  
public void onReceive(Context context, Intent intent) \{  
if(intent.getAction() == "send\_sms") \{  
Toast.makeText(Test1Activity.this, "send sms successfully", Toast.LENGTH\_LONG).show();  
\}  
if(intent.getAction() == "deliver\_sms") \{  
Toast.makeText(Test1Activity.this, "deliver sms successfully", Toast.LENGTH\_LONG).show();  
\}  
\}  
\}  
\}  
2. 通知  
import android.app.Activity;  
import android.app.Notification;  
import android.app.NotificationManager;  
import android.app.PendingIntent;  
import android.content.Context;  
import android.content.Intent;  
import android.os.Bundle;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
  
public class Test2Activity extends Activity implements OnClickListener \{  
private Button btnNotify = null;  
private NotificationManager nm = null;  
private Notification notification = null;  
private Intent intent = null;  
private PendingIntent pi = null;  
@Override  
protected void onCreate(Bundle savedInstanceState) \{  
super.onCreate(savedInstanceState);  
setContentView(R.layout.test2);  
  
btnNotify = (Button) this.findViewById(R.id.notify);  
btnNotify.setOnClickListener(this);  
\}  
@Override  
public void onClick(View v) \{  
switch(v.getId()) \{  
case R.id.notify:  
testNotify();  
\}  
\}  
@SuppressWarnings("deprecation")  
private void testNotify() \{  
nm = (NotificationManager) this.getSystemService(Context.NOTIFICATION\_SERVICE);  
notification = new Notification();  
notification.icon = R.drawable.ic\_launcher;  
notification.tickerText = "你也是通知";  
notification.defaults = Notification.DEFAULT\_SOUND;  
  
intent = new Intent(this, Test1Activity.class);  
pi = PendingIntent.getActivity(this, 0, intent, 0);//用户点击该notification后才启动该activity  
  
notification.setLatestEventInfo(this, "title22", "text33", pi);  
nm.notify(1, notification);  
\}  
\}