Android — Service开机自动启动

1.首先开机启动后系统会发出一个Standard Broadcast Action,名字叫android.intent.action.BOOT_COMPLETED,这个Action只会发出一次。
2.构造一个IntentReceiver类,重构其抽象方法onReceiveIntent(Context context, Intent intent),在其中启动你想要启动的Service。
3.在AndroidManifest.xml中,首先加入< uses-permission android:name=”android.permission.RECEIVE_BOOT_COMPLETED”>< /uses-permission>来获得BOOT_COMPLETED的使用许可,然后注册前面重构的IntentReceiver类,在其< intent-filter>中加入< action android:name=”android.intent.action.BOOT_COMPLETED” /> ,以使其能捕捉到这个Action。
一个例子
xml:
代码

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< uses-permission android:name = "android.permission.RECEIVE_BOOT_COMPLETED" ></ uses-permission >
< receiver android:name = ".OlympicsReceiver" android:label = "@string/app_name" >
  < intent-filter >
    < action android:name = "android.intent.action.BOOT_COMPLETED" />
    < category android:name = "android.intent.category.LAUNCHER" />
  </ intent-filter >
</ receiver >

java:
代码

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public class OlympicsReceiver extends BroadcastReceiver {
   static final String ACTION = "android.intent.action.BOOT_COMPLETED" ;
   public void onReceive(Context context, Intent intent) {
      if (intent.getAction().equals(ACTION)){
          context.startService( new Intent(context, OlympicsService. class ), null ); //启动倒计时服务
          Toast.makeText(context, "OlympicsReminder service has started!" , Toast.LENGTH_LONG).show();
      }
  }
}

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