Android: 从对话框启动警报服务

Question

我正在尝试从对话框启动 1 分钟闹钟。这是我的对话方法（带有 AlarmManager 和所有东西）：

    public void Dialog2(){
    new AlertDialog.Builder(context)
            .setTitle("Email!")
            .setMessage("Would You Like to Set a 1 Minute Reminder?\nRemember to Email Your Professor!")
            .setPositiveButton("Set Alarm!", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    AlarmManager alarmMgr = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
                    Intent intent = new Intent(context, AlarmReceiver.class);
                    PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0, intent, 0);

                    alarmMgr.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
                            SystemClock.elapsedRealtime() +
                                    60 * 1000, alarmIntent);


                }
            })
            .setNegativeButton("Cancel!", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                }
            })
            .show();
}

这是我的 AlarmReceiver Class:

public class AlarmReceiver extends WakefulBroadcastReceiver{
@Override
public void onReceive(final Context context, Intent intent) {
    Toast.makeText(context, "Don't Forget To Email Your Teacher!.",
            Toast.LENGTH_LONG).show();
    Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
    vibrator.vibrate(2000);
    Uri alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
    if (alarmUri == null) {
        alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    }
    Ringtone ringtone = RingtoneManager.getRingtone(context, alarmUri);
    ringtone.play();
}
}

在我的 AndroidManifest 中，我包括：

    <service android:enabled="true" android:name=".ServiceClass" />
    <receiver android:name=".AlarmReceiver" />

这是我的服务Class:

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;


public class ServiceClass extends Service{

@Override
public void onCreate() {
    super.onCreate();
}

@Override
public IBinder onBind(Intent arg0) {
    return null;
}

@Override
public void onDestroy() {
    super.onDestroy();
}

@Override
public void onStart(Intent intent, int startId) {
    super.onStart(intent, startId);
}

}

请帮忙！提前致谢！！

Answer 1

如果您想从 AlarmManager 启动服务，您应该在 AlarmReceiver 的 onReceive 方法中启动服务 class

Answer 2

您的基于 Android Dev Guide 的代码正在运行，更准确地说，这个：

alarmMgr = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(context, AlarmReceiver.class);
PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0, intent, 0);
alarmMgr.setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP,SystemClock.elapsedRealtime() + 10 * 1000, alarmIntent);

Alarm.Receiver.java:

public class AlarmReceiver extends BroadcastReceiver
{
    @Override
    public void onReceive(Context context, Intent intent)
    {

            /* class1 = new MainActivity();
            class1.message();*/
        Toast.makeText(context, "Don't Forget To Email Your Teacher!.",
                Toast.LENGTH_LONG).show();
        Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
        vibrator.vibrate(1000);
        Uri alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
        if (alarmUri == null)
        {
            alarmUri =       RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        }
        Ringtone ringtone = RingtoneManager.getRingtone(context, alarmUri);
        ringtone.play();

    }
}

我需要做 3 件事才能让它发挥作用（API 16 到 25）：

在您的清单中应用之前添加权限：

<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.SET_ALARM" />
<uses-permission android:name="android.permission.VIBRATE" />

在应用程序中移动接收器：

<receiver android:name=".Action.AlarmReceiver"> //change according to your path
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED"/>
    </intent-filter>
</receiver>

最后...重新启动 Android Studio。是的，我不知道为什么，但我必须这样做才能使其适用于我的情况。

希望对您有所帮助！

Android: 从对话框启动警报服务

Android: Starting Alarm Service from Dialog

android

android-intent

android-service

android-alarms

android-intentservice