这个类的方法主要有两类，一类是getXXX，表示要激活的意图的类型，如activity，service或者是BroadcastReceiver等。另一类是send，表示立即发送这个意图。

下面是常用的API：

public static PendingIntent getActivity (Context context, int requestCode, Intent intent, int flags, Bundle options)
public static PendingIntent getBroadcast (Context context, int requestCode, Intent intent, int flags)
public static PendingIntent getService (Context context, int requestCode, Intent intent, int flags)
public void send ()

/**
     * 单独使用pendingIntent
     *     通过send方法发送intent
     */
    public void pendingIntentFunc()
    {
        Intent intent = new Intent("com.xxx");
        intent.putExtra("info","我是info");
          //其实就跟调用sendBroadcast方法一样
        PendingIntent pi = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        try
        {
            pi.send();//执行PendingIntent中的意图
        } catch (CanceledException e)
        {
            e.printStackTrace();
        }
    }

定义一个BroadcastReceiver用于接收广播：

package com.example.receiver;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;
public class MyReceiver extends BroadcastReceiver
{
    private static final String TAG = "MyReceiver";
    @Override
    public void onReceive(Context context, Intent intent)
    {
        Log.i(TAG,"成功收到广播...");
        Toast.makeText(context,"info:"+intent.getStringExtra("info"),0).show();
    }
}

清单文件中配置receiver：

 <receiver android:name="com.example.receiver.MyReceiver">
            <intent-filter >
                <action android:name="com.xxx"/>
            </intent-filter>
 </receiver>

 /**
     * 显示一个通知，点击通知将会激活一个服务
     */
    public void sendNotification2()
    {
        NotificationManager manager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
//        notification的初始化
        Notification notification = new Notification();
        notification.icon = R.drawable.ic_launcher;
        notification.when = System.currentTimeMillis();
        notification.tickerText = "又来一条新通知";
        notification.flags = notification.FLAG_AUTO_CANCEL;
//        包装一个PendingIntent，当用户点击通知触发一个意图
        Intent intent = new Intent(this,MyService.class);
//        点击通知将启动服务,相当于调用了startService方法
        PendingIntent contentIntent = PendingIntent.getService(this, 0,intent, PendingIntent.FLAG_UPDATE_CURRENT);
        notification.setLatestEventInfo(this,"标题","点我激活一个服务", contentIntent);
//        激活通知
        manager.notify(2,notification);//第一个参数代表的是通知的id
    }

定义一个服务：

package com.example.service;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;

public class MyService extends Service
{
    private static final String TAG = "MyService";

    @Override
    public IBinder onBind(Intent intent)
    {
        return null;
    }

    @Override
    public void onCreate()
    {
        Log.i(TAG,"服务成功启动...");
    }
}

清单文件中配置服务：

<service android:name="com.example.service.MyService"></service>

当点击任务栏通知即开启服务：