Question

我有一个警报管理器，我想查看警报是否已设置，以及是否显示了一个不同的警报对话框，如果尚未设置，则显示为已关闭。我找到了一些我被告知应该工作的代码，但它不是。此外，如果已设置警报，警报对话框应提供取消警报的选项，但也不起作用。这是我的代码：

boolean alarmUp = (PendingIntent.getBroadcast(Main.this, 1, 
                new Intent(Main.this, Alarm_Receiver.class), 
                PendingIntent.FLAG_NO_CREATE) != null);
        if (alarmUp){
    //Sets up the custom alert dialog layout gathers the selected time for the notifications to be set
    LayoutInflater factory = LayoutInflater.from(this);
    final View time_picker = factory.inflate(R.layout.dialog_layout2, null);
    AlertDialog.Builder alertDialogBuilder2 = new AlertDialog.Builder(this);
    alertDialogBuilder2.setView(time_picker);
    alertDialogBuilder2.setTitle("Select Your Notification Time:");
    alertDialogBuilder2
    .setMessage("Please select the time when you want the notifications to appear on your phone each day. Please note: If your phone restarts or runs out of battery you will have to reset the time to receive the notifications.")
    .setCancelable(false)
    .setPositiveButton("SET TIME",new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog,int id) {
            TimePicker timePicker = (TimePicker) time_picker.findViewById(R.id.time_picker);
            timePicker.clearFocus();
            hour = timePicker.getCurrentHour();
            minute = timePicker.getCurrentMinute();
            Calendar c = Calendar.getInstance();
            c.set(Calendar.HOUR_OF_DAY, hour);
            c.set(Calendar.MINUTE, minute);
            // i.e. 24*60*60*1000= 86,400,000   milliseconds in a day   
            Intent intentAlarm  = new Intent(Main.this, Alarm_Receiver.class);
            intentAlarm.setAction("com.raddevelopment.organiseyourbreeding_pro.CUSTOM_INTENT");
            PendingIntent pendingIntent = PendingIntent.getBroadcast(Main.this,1,  intentAlarm, PendingIntent.FLAG_CANCEL_CURRENT);
            AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
            alarmManager.setRepeating(AlarmManager.RTC,c.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);
            Toast.makeText(Main.this, "Alarm Scheduled", Toast.LENGTH_LONG).show();
            return;                  
        }  
     });  
    alertDialogBuilder2.setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog, int which) {
             //Exits
         }
     });
    AlertDialog alertDialog2 = alertDialogBuilder2.create();
    alertDialog2.show();
        }else{
            //Sets up the alert dialog
            AlertDialog.Builder alertDialogBuilder2 = new AlertDialog.Builder(this);

            // set title of alert dialog
            alertDialogBuilder2.setTitle("Scheduled Notifications are Currently Set:");
            // set dialog message
            alertDialogBuilder2
            .setMessage("Would you like to cancel these notifications?")
            .setCancelable(false)
            .setPositiveButton("YES",new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog,int id) {
                    AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
                    PendingIntent pi = (PendingIntent.getBroadcast(Main.this, 1, 
                            new Intent(Main.this, Alarm_Receiver.class), 
                            PendingIntent.FLAG_UPDATE_CURRENT));
                    alarmManager.cancel(pi);
                    pi.cancel();
                }
            })
            .setNegativeButton("NO",new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog,int id) {

                }
            });
            // create alert dialog
            AlertDialog alertDialog2 = alertDialogBuilder2.create();
            // show it
            alertDialog2.show();
        }

Answer 1

为了确定是否设置了警报，您执行此操作：

boolean alarmUp = (PendingIntent.getBroadcast(Main.this, 1, 
            new Intent(Main.this, Alarm_Receiver.class), 
            PendingIntent.FLAG_NO_CREATE) != null);

但是当你设置闹钟时，你会这样做：

Intent intentAlarm  = new Intent(Main.this, Alarm_Receiver.class);
intentAlarm.setAction("com.raddevelopment.organiseyourbreeding_pro.CUSTOM_INTENT");
PendingIntent pendingIntent = PendingIntent.getBroadcast(Main.this,1,  intentAlarm, PendingIntent.FLAG_CANCEL_CURRENT);

这些Intent不匹配。您需要在正在使用的Intent上设置ACTION以确定是否设置了警报。像这样：

boolean alarmUp = (PendingIntent.getBroadcast(Main.this, 1, 
            new Intent(Main.this, Alarm_Receiver.class)
  .setAction("com.raddevelopment.organiseyourbreeding_pro.CUSTOM_INTENT"), 
            PendingIntent.FLAG_NO_CREATE) != null);

取消警报管理器并检查是否已设置警报

1 个答案: