Question

我是使用AlarmManager和BroadcastReceiver的提醒应用程序。从Firebase实时数据库检索日期和时间。当设备锁定时，我也使用startForegroundService在后台触发通知和警报。但是我在通知和警报触发时出现问题，该应用程序在设备上崩溃并显示弹出对话框。有人可以建议我该怎么做/替换我的代码？

AlarmReceiver.java

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;

import static android.support.v4.content.ContextCompat.startForegroundService;
import static android.support.v4.content.WakefulBroadcastReceiver.startWakefulService;

public class AlarmReciever extends BroadcastReceiver {

    @Override
    public void onReceive( Context context, Intent intent) {
        // this will sound the alarm tone
        //this will sound the alarm once, if you wish to
        //raise alarm in loop continuously then use MediaPlayer and
        Uri alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
            if (alarmUri == null) {
                alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
            }

        Ringtone ringtone = RingtoneManager.getRingtone(context, alarmUri);
            ringtone.play();

        //this will send a notification message
        ComponentName comp = new ComponentName(context.getPackageName(),
                AlarmService.class.getName());
        startForegroundService(context, (intent.setComponent(comp)));
        setResultCode(Activity.RESULT_OK);

    }
}

AlarmService.java

import android.app.IntentService;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Build;
import android.support.annotation.Nullable;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import android.widget.Toast;
import static android.support.v4.content.ContextCompat.startForegroundService;
import java.util.Random;

import id.restabayu.clientsatu.Classified;
import id.restabayu.clientsatu.DetailActivity;
import id.restabayu.clientsatu.R;

public class AlarmService extends IntentService {

    private NotificationManager alarmNotificationManager;

    public AlarmService() {
        super("AlarmService");

    }

   // public Classified cl;

    @Override
    public void onHandleIntent(Intent intent) {
     showNotification("PENGINGAT !", "Acara Segera Dimulai ! Silahkan Mempersiapkan Diri");
       /* String[] datas = {cl.getNama(), cl.getTanggal(), cl.getWaktu(), cl.getTempat(), cl.getDeskripsi(), cl.getNotif()}; // replace and send your data from here
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            getIntentt(datas), 0); */
    }

    private Intent getIntentt(String[] data) {
        Intent i = new Intent(this, DetailActivity.class);
        i.putExtra("NAMA_KEY",data[0]);
        i.putExtra("TANGGAL_KEY",data[1]);
        i.putExtra("WAKTU_KEY",data[2]);
        i.putExtra("TEMPAT_KEY",data[3]);
        i.putExtra("DESKRIPSI_KEY",data[4]);
        i.putExtra("NOTIF_KEY" , data[5]);
        return i;
    }

    private void sendNotification(String msg) {
        Log.d("AlarmService", "Preparing to send notification...: " + msg);
        Toast.makeText(this, "Alarm Notif Show", Toast.LENGTH_LONG).show();
        alarmNotificationManager = (NotificationManager) this
                .getSystemService(Context.NOTIFICATION_SERVICE);

        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                new Intent(this, DetailActivity.class), 0);

        NotificationCompat.Builder alamNotificationBuilder = new NotificationCompat.Builder(
                this).setContentTitle("Alarm").setSmallIcon(R.drawable.ic_launcher_background)
                .setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
                .setContentText(msg);


        alamNotificationBuilder.setContentIntent(contentIntent);
        alarmNotificationManager.notify(1, alamNotificationBuilder.build());
        Log.d("AlarmService", "Notification sent.");
    }

    private void showNotification(String title, String body) {
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
               new Intent(this, DetailActivity.class), 0);
        NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
        String NOTIFICATION_CHANNEL_ID = "id.restabayu.clientsatu.test";

        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
        {
            NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID,"Notification",NotificationManager.IMPORTANCE_DEFAULT);
            notificationChannel.setDescription("IK Channel");
            notificationChannel.enableLights(true);
            notificationChannel.setLightColor(Color.BLUE);
            notificationChannel.setVibrationPattern(new long[]{0,1000,500,1000});
            notificationChannel.enableLights(true);
            notificationManager.createNotificationChannel(notificationChannel);

        }

        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this,NOTIFICATION_CHANNEL_ID);
        notificationBuilder.setAutoCancel(true)
                .setDefaults(Notification.DEFAULT_ALL)
                .setWhen(System.currentTimeMillis())
                .setSmallIcon(R.drawable.ic_launcher_background)
                .setContentTitle(title)
                .setContentText(body)
                .setContentInfo("info")
                .setContentIntent(contentIntent);

        notificationManager.notify(new Random().nextInt(),notificationBuilder.build());
    }

}

DetailActivity.java

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;

import java.util.Calendar;
import java.util.Date;
import java.lang.String;

import id.restabayu.clientsatu.Service.AlarmReciever;
import id.restabayu.clientsatu.Service.Converter;
import id.restabayu.clientsatu.Service.AlarmService;



public class DetailActivity extends AppCompatActivity {


    TextView namaTxt,tanggalTxt,waktuTxt,tempatTxt,deskripsiTxt,notifTxt;
    AlarmManager alarmManager;
    private PendingIntent pendingIntent;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_detail);

        namaTxt = (TextView) findViewById(R.id.namaDetailTextView);
        tanggalTxt = (TextView) findViewById(R.id.tanggalDetailTextView);
        waktuTxt = (TextView) findViewById(R.id.waktuDetailTextView);
        tempatTxt = (TextView) findViewById(R.id.tempatDetailTextView);
        deskripsiTxt = (TextView) findViewById(R.id.deskripsiDetailTextView);
        notifTxt = (TextView) findViewById(R.id.notifTxt);

        alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
        ToggleButton alarmToggle = (ToggleButton) findViewById(R.id.alarmToggle);

        //GET INTENT
        Intent i = this.getIntent();


        //RECEIVE DATA ngangggo iki raiso dibukak.
        String nama = i.getExtras().getString("NAMA_KEY");
        String tanggal = i.getExtras().getString("TANGGAL_KEY");
        String waktu = i.getExtras().getString("WAKTU_KEY");
        String tempat = i.getExtras().getString("TEMPAT_KEY");
        String deskripsi = i.getExtras().getString("DESKRIPSI_KEY");
        String notif = i.getExtras().getString("NOTIF_KEY");



        //BIND DATA
        namaTxt.setText(nama);
        tanggalTxt.setText(tanggal);
        waktuTxt.setText(waktu);
        tempatTxt.setText(tempat);
        deskripsiTxt.setText(deskripsi);
        notifTxt.setText(notif);


    }



        public void onToggleClicked (View view) {
            String date = Converter.ConvertDate(tanggalTxt.getText().toString(), "dd/MM/yyyy", "yyyy MM dd");
            String time = notifTxt.getText().toString();
            String dateTime = date + " " + time;
            Date txtAlarm = Converter.toDate(dateTime, "yyyy MM dd HH:mm");
            if (((ToggleButton) view).isChecked()) {
                Log.d("MyActivity", "Alarm On");
                Calendar calendar = Calendar.getInstance();
                calendar.setTime(txtAlarm);
                Intent myIntent = new Intent(this, AlarmReciever.class);
                pendingIntent = PendingIntent.getBroadcast(DetailActivity.this, 0, myIntent, 0);
                alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);
            }

            else {
                alarmManager.cancel(pendingIntent);
                Log.d("MyActivity", "Alarm Off");
            }
        }
}

Logcat

12-24 17:08:58.492 9233-9233/id.restabayu.clientsatu E/AndroidRuntime: FATAL EXCEPTION: main
    Process: id.restabayu.clientsatu, PID: 9233
    android.app.RemoteServiceException: Context.startForegroundService() did not then call Service.startForeground()
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1769)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6499)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:440)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)

Context.startForegroundService（）然后没有在BroadcastReceiver和IntentService上调用Service.startForeground（）

0 个答案: