这是工作代码。它每10分钟唤醒一次CPU，直到手机关闭。
添加到Manifest.xml：
...<uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>...<receiver android:process=":remote" android:name=".Alarm"></receiver>...
你班上的代码：
package yourPackage;import android.app.AlarmManager;import android.app.PendingIntent;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.os.PowerManager;import android.widget.Toast;public class Alarm extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) {PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, ""); wl.acquire(); // Put here YOUR pre. Toast.makeText(context, "Alarm !!!!!!!!!!", Toast.LENGTH_LONG).show(); // For example wl.release(); } public void setAlarm(Context context) { AlarmManager am =( AlarmManager)context.getSystemService(Context.ALARM_SERVICE); Intent i = new Intent(context, Alarm.class); PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0); am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), 1000 * 60 * 10, pi); // Millisec * Second * Minute } public void cancelAlarm(Context context) { Intent intent = new Intent(context, Alarm.class); PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0); AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); alarmManager.cancel(sender); }}从服务设置警报：
package yourPackage;import android.app.Service;import android.content.Context;import android.content.Intent;import android.os.IBinder;public class YourService extends Service{ Alarm alarm = new Alarm(); public void onCreate() { super.onCreate();} @Override public int onStartCommand(Intent intent, int flags, int startId) { alarm.setAlarm(this); return START_STICKY; } @Overridepublic void onStart(Intent intent, int startId) { alarm.setAlarm(this); } @Override public IBinder onBind(Intent intent) { return null; }}如果要设置在电话启动时重复发出警报：
向Manifest.xml添加权限和服务：
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>...<receiver android:name=".AutoStart"> <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED"></action> </intent-filter></receiver>...<service android:name=".YourService" android:enabled="true" android:process=":your_service" ></service>
并创建一个新类：
package yourPackage;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;public class AutoStart extends BroadcastReceiver{ Alarm alarm = new Alarm(); @Override public void onReceive(Context context, Intent intent) {if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) { alarm.setAlarm(context); } }}
