AlarmManager定時器傳送一個延時廣播
阿新 • • 發佈:2019-02-19
AlarmUtil.java
public static final String ACTION_TIME_OVER = "com.spt.carengine.time.over"; public static void startTimer(Context context, String action, long time) { Intent intent = new Intent(action); PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0); AlarmManager alarm = (AlarmManager) context .getSystemService(Context.ALARM_SERVICE); alarm.setExact(AlarmManager.RTC_WAKEUP, time, sender); } public static void cancelTimer(Context context, String action) { Intent intent = new Intent(action); PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0); AlarmManager alarm = (AlarmManager) context .getSystemService(context.ALARM_SERVICE); alarm.cancel(sender); }
呼叫的地方 注意了一定要用當前系統時間 加上等待的時間
long current = System.currentTimeMillis();
long value = current + 60000; // 24 * 60 * 60 *1000
AlarmUtil.startTimer(MainActivity.this,
AlarmUtil.ACTION_TIME_OVER, value);// 24 * 60 * 60 *1000
呼叫方法跟普通廣播差不多 先註冊再在onreceive中實現註冊:
廣播接收實現registerNaviBroadcast(MainActivity.this, AlarmUtil.ACTION_TIME_OVER); private void registerNaviBroadcast(Context context, String action) { IntentFilter filter = new IntentFilter(); filter.addAction(action); context.registerReceiver(mReceiver, filter); }
private BroadcastReceiver mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if (intent == null) { return; } String action = intent.getAction(); Log.d("MapFactoryTest", "onReceive action: "+action); switch (action) { case AlarmUtil.ACTION_TIME_OVER: //.............. break; } } };