转载 http://www.cnblogs.com/zhwl/archive/2013/04/15/3022066.html
有改动的转载:
一、Android 系统自动实现开机启动
很简单,我们只要实现开机自启动即可,Android实现开机自启动可能是移动操作系统中最简单的了,我们只需要监听一个开机启动的Broadcast(广播)即可。首先写一个Receiver(即广播监听器),继承BroadcastReceiver,如下所示:
public class BootReceiver extends BroadcastReceiver {
private PendingIntent mAlarmSender;
@Override
public void onReceive(Context context, Intent intent) {
// 在这里干你想干的事(启动一个Service,Activity等),本例是启动一个定时调度程序,每30分钟启动一个Service去更新数据
mAlarmSender = PendingIntent.getService(context, 0, new Intent(context, RefreshDataService.class), 0);
long firstTime = SystemClock.elapsedRealtime();
AlarmManager am = (AlarmManager) context .getSystemService(Activity.ALARM_SERVICE); am.cancel(mAlarmSender);
am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, firstTime, 30 * 60 * 1000, mAlarmSender);
}
}
接下来,我们只需要在应用程序配置文件AndroidManifest.xml中注册这个Receiver来监听系统启动事件即可,如下所示:
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二、android上怎样让一个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
来获得BOOT_COMPLETED的使用许可,然后注册前面重构的IntentReceiver类,在其
中加入 ,以使其能捕捉到这个Action。
一个例子
xml:
Androidmanifest.xml
OlympicsReceiver.java
public class OlympicsReceiver extends IntentReceiver
{
/*要接收的intent源*/
static final String ACTION = "android.intent.action.BOOT_COMPLETED";
public void onReceiveIntent(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();
}
}
}
注意:现在的IntentReceiver已经变为BroadcastReceiver,OnReceiveIntent为onReceive。所以java这边的代码为:
(也可以实现应用程序开机自动启动)
public class OlympicsReceiver extends BroadcastReceiver
{
/*要接收的intent源*/
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();
//这边可以添加开机自动启动的应用程序代码
}
}
}
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