爲什麼在我的android項目中沒有正確顯示通知？

Question

我已經完成了一個應用程序，它在一定時間內發送了一個通知來訪問其他活動，但是當我設置時間時，通知纔會出現，只有當我關閉該應用程序並且符合所需時間時。有人知道如何更改我的代碼，使其顯示在選定的時間？即使該應用仍處於後臺。

我的活動：

package app.alexdickson.com.workout1; 

import android.app.AlarmManager; 
import android.app.Dialog; 
import android.app.PendingIntent; 
import android.app.TimePickerDialog; 
import android.content.Context; 
import android.content.Intent; 
import android.support.v7.app.ActionBar; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.ImageButton; 
import android.widget.TimePicker; 
import android.widget.Toast; 

import java.util.Calendar; 


public class Main2Activity extends AppCompatActivity implements View.OnClickListener{ 
ImageButton botoFlexio; 
ImageButton botoAbdominals; 
static final int DIALOG_ID = 0; 
int hour_x; 
int minute_x; 
int hourDefinitivaFlexio; 
int minuteDefinitvaFlexio; 
int hourDefinitivaAbs; 
int minuteDefinitivaAbs; 
PendingIntent pendingIntent1; 
PendingIntent pendingIntent2; 
Context context; 
AlarmManager alarmManager1; 
AlarmManager alarmManager2; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main2); 
    this.context = this; 
    botoFlexio = (ImageButton) findViewById(R.id.botoFlexio); 
    botoAbdominals = (ImageButton) findViewById(R.id.botoAbdominals); 
    botoFlexio.setOnClickListener(this); 
    botoAbdominals.setOnClickListener(this); 
    alarmManager1 = (AlarmManager) getSystemService(ALARM_SERVICE); 
    alarmManager2 = (AlarmManager) getSystemService(ALARM_SERVICE); 


} 
private void alarmMethod1(){ 
    Intent myIntent1 = new Intent(this, NotifyService1.class); 
    AlarmManager alarmManager1 = (AlarmManager)getSystemService(ALARM_SERVICE); 
    pendingIntent1 =PendingIntent.getService(this,0,myIntent1,0); 

    Calendar calendari1 = Calendar.getInstance(); 
    calendari1.set(Calendar.MINUTE, minute_x); 
    calendari1.set(Calendar.HOUR,hour_x); 

    alarmManager1.setRepeating(AlarmManager.RTC_WAKEUP,calendari1.getTimeInMillis(), 
      1000 * 60 * 60 * 24, pendingIntent1); 


} 


private void alarmMethod2(){ 
    Intent myIntent2 = new Intent(this, NotifyService2.class); 
    AlarmManager alarmManager2 = (AlarmManager)getSystemService(ALARM_SERVICE); 
    pendingIntent2 =PendingIntent.getService(this,0,myIntent2,0); 

    Calendar calendari2 = Calendar.getInstance(); 
    calendari2.set(Calendar.MINUTE,minute_x); 
    calendari2.set(Calendar.HOUR, hour_x); 

    alarmManager2.setRepeating(AlarmManager.RTC_WAKEUP,calendari2.getTimeInMillis(), 
      1000 * 60 * 60 * 24, pendingIntent2); 


} 










@Override 
public void onClick(View v) { 
    switch (v.getId()){ 
     case R.id.botoFlexio: 
      botoFlexio.setBackgroundResource(R.drawable.flexioclicat); 
      showDialog(DIALOG_ID); 
      hourDefinitivaFlexio = hour_x; 
      minuteDefinitvaFlexio = minute_x; 

      alarmMethod1(); 

      break; 

     case R.id.botoAbdominals: 
      botoAbdominals.setBackgroundResource(R.drawable.abdominalsclicat); 
      showDialog(DIALOG_ID); 
      hourDefinitivaAbs = hour_x; 
      minuteDefinitivaAbs = minute_x; 

      alarmMethod2(); 

      break; 

    } 
} 

@Override 
protected Dialog onCreateDialog(int id) { 
    if (id == DIALOG_ID) 

     return new TimePickerDialog(Main2Activity.this, kTimePickerListener, hour_x, minute_x, true); 
    return null; 
} 

protected TimePickerDialog.OnTimeSetListener kTimePickerListener = 
     new TimePickerDialog.OnTimeSetListener() { 
      @Override 
      public void onTimeSet(TimePicker view, int hourOfDay, int minute) { 
       hour_x = hourOfDay; 
       minute_x = minute; 
       Toast.makeText(Main2Activity.this, hour_x + ": " + minute_x, Toast.LENGTH_LONG).show(); 
      } 
     }; 

報警接收機（有2，但它們是相同的，唯一改變的事情是數字）

package app.alexdickson.com.workout1; 

import android.annotation.TargetApi; 
import android.app.Notification; 
import android.app.NotificationManager; 
import android.app.PendingIntent; 
import android.app.Service; 
import android.content.Intent; 
import android.media.RingtoneManager; 
import android.net.Uri; 
import android.os.Build; 
import android.os.IBinder; 



public class NotifyService1 extends Service { 

@Override 
public IBinder onBind(Intent intent) { 
    return null; 
} 
@TargetApi(Build.VERSION_CODES.JELLY_BEAN) 
@Override 
public void onCreate(){ 
    Uri sound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); 


    NotificationManager nNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE); 
    Intent intent1 = new Intent(this.getApplicationContext(),Main3Activity.class); 
    PendingIntent pIntent = PendingIntent.getActivity(this, 0, intent1, 0); 

    Notification mNotify = new Notification.Builder(this) 
      .setContentTitle("Hora d'entrenar!") 
      .setContentText("Clica per començar entrenament de pit i braços") 
      .setSmallIcon(R.drawable.logofinal) 
      .setContentIntent(pIntent) 
      .setSound(sound) 
      .build(); 

    nNM.notify(1,mNotify); 

} 

}

Answer 1

檢查this link與一個類似的問題。它可能是您的Receiver，或者您在設置時間時未使用日曆。