Question

我使用以下代码将我的Android应用设置为在event.getStartTime()

给出的时间使手机静音

public static void schedule(Context ctx, Event event) {
    //schedule method is being called, but the alarm manager is not being set for some reason
    Calendar start = event.getStartTime();
    long end = event.getEndTime().getTimeInMillis();
    String status = event.getStatus();

    Intent intent = new Intent(ctx, AlarmReceiver.class);
    intent.putExtra("time", end);
    intent.putExtra("status", status);

    PendingIntent sender = PendingIntent.getBroadcast(ctx, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    AlarmManager am = (AlarmManager) ctx.getSystemService(Context.ALARM_SERVICE);
    am.set(AlarmManager.RTC_WAKEUP, start.getTimeInMillis(), sender);
}

这是我的onReceive课程中的AlarmReceiver方法扩展BroadcastReceiver

@Override
    public void onReceive(Context context, Intent intent) {
        //Toast.makeText(context, "changing status", Toast.LENGTH_SHORT).show();
        ContextWrapper c = new ContextWrapper(context);
        AudioManager am = (AudioManager) c.getBaseContext().getSystemService(Context.AUDIO_SERVICE);

        Calendar set_time = Calendar.getInstance();
        int current_ringer_mode = am.getRingerMode();
        String current_status = "";

        switch (current_ringer_mode) {
            case AudioManager.RINGER_MODE_VIBRATE: current_status = "vibrate";
            break;

            case AudioManager.RINGER_MODE_SILENT: current_status = "silence";
            break;

            case AudioManager.RINGER_MODE_NORMAL: current_status = "sound";
            break;

            default: current_status = "silence";
            break;
        }

        try {
            Bundle bundle = intent.getExtras();
            String status = bundle.getString("status");
            set_time.setTimeInMillis(bundle.getLong("time"));
            if (status.equals("vibrate")) {
                //turn phone on vibrate
                am.setRingerMode(AudioManager.RINGER_MODE_VIBRATE);
                if (bundle.getLong("time") != 0L) {
                    //set unscheduler
                    EventScheduler.unschedule(context.getApplicationContext(), 
                            set_time, 
                            current_status);
                }
            } else if (status.equals("silence")) {
                //turn phone on silence
                am.setRingerMode(AudioManager.RINGER_MODE_SILENT);
                if (bundle.getLong("time") != 0L) {
                    //set unscheduler
                    EventScheduler.unschedule(context.getApplicationContext(), 
                            set_time, 
                            current_status);
                }
            } else if (status.equals("sound")) {
                //turn on sound
                am.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
            }

        } catch(Exception e) {
            Toast.makeText(context, "There was an error somewhere, but we still received an alarm", Toast.LENGTH_SHORT).show();
            e.printStackTrace();
        }
    }

然而，当这个事件发生时间到来时，没有任何反应。我这样做了吗？

Answer 1

愚蠢的怀疑，但你注册了BroadcastReceiver和所需的IntentFilter吗？

修改在清单文件中，您应该在应用程序节点

中包含以下行
<receiver android:name="your_receiver_name" > <intent-filter> <action android:name="your_action_name" > </action> </intent-filter> </receiver>

动态的另一种方法是，调用registerReceiver (BroadcastReceiver receiver, IntentFilter filter)

有关如何使用广播过滤器的精彩教程，您可以访问此Vogella Tutorial

希望这会清除您的疑问并解决问题。

广播接收器不会在Android应用程序中关闭

1 个答案: