我是安卓新手。我正在android中开发警报应用程序。我已经完成了以下代码,这些代码在设备开启时可以使用,但在设备重启时它对我不起作用。我将该警报存储在共享首选项中并从中检索。当设备重新启动时,我从OnBootReceiver重新安排警报。我已经提到了对 Android-manifest 的权限。出于测试目的,我采用了硬编码值。请检查以下代码并帮助我从一天半开始研究它。任何人都有想法。谢谢。
公共类 FirstActivity 扩展 Activity 实现 OnClickListener {
int mHour = 14;
int mMinute = 48;
static String prefkey="SHARED_KEY";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
SharedPreferences preferences =getSharedPreferences(prefkey,Context.MODE_WORLD_READABLE);
SharedPreferences.Editor editor = preferences.edit();
editor.putInt("min",mMinute);
editor.putInt("hour",mHour);
editor.commit();
}
}
公共类 OnBootReciever 扩展 BroadcastReceiver {
int sethour,setmin;
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "booting....", Toast.LENGTH_LONG).show();
SharedPreferences preferences=context.getSharedPreferences(FirstActivity.prefkey,Context.MODE_PRIVATE);
sethour=preferences.getInt("hour",14);
setmin=preferences.getInt("min",48);
Calendar cal=Calendar.getInstance();
cal.add(Calendar.MINUTE,setmin);
cal.add(Calendar.HOUR_OF_DAY,sethour);
cal.add(Calendar.SECOND,0);
AlarmManager mgr=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
Intent i=new Intent(context,RepeatingAlarm.class);
PendingIntent sender1 = PendingIntent.getBroadcast(context,0, i,PendingIntent.FLAG_UPDATE_CURRENT);
mgr.setRepeating(AlarmManager.RTC_WAKEUP,cal.getTimeInMillis(),AlarmManager.INTERVAL_FIFTEEN_MINUTES,sender1);
}
}
公共类 RepeatingAlarm 扩展 BroadcastReceiver {
static MediaPlayer mMediaPlayer ;
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Trigger the alarm", Toast.LENGTH_LONG).show();
mMediaPlayer = new MediaPlayer();
mMediaPlayer.create(getcontext,R.raw.warm).start();
}
}
在AndroidManifest.xml-->
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<receiver android:name="com.vidushi.alarmsystem.RepeatingAlarm"></receiver>
<receiver android:name=".OnBootReciever" android:process=":remote">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.HOME" />
</intent-filter>
</receiver>