上一节已经介绍过BroadcastReceiver实现实时监听电量的功能,这节就来介绍一下假设实现开机自己主动启动的功能。这个比监听电量还简单不少
(1)在清单文件注冊权限
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
(2)实现 BroadcastReceiver接口
package com.example.g04_broadcastreciver04; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; public class BootComplete extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub Intent intent2=new Intent(context,MainActivity.class); intent2.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(intent2); } }
(3)在清单文件注冊Receiver
<receiver android:name="com.example.g04_broadcastreciver04.BootComplete" > <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED" > </action> <category android:name="android.intent.category.HOME" > </category> </intent-filter> </receiver>