Question

我已经花了两天时间（大约12个小时）搜索有关alarmmanager和broadcastreceiver的信息，我设法让它正常工作，但我正在尝试一个非常奇怪的问题。

我试图解雇一个服务然后启动一个intentservice。有时，它有效，但它只是停止工作。这真的很奇怪，但解决方案是根据警报意图调用广播接收器，然后将类更改为服务类。正如我所说，这真的很奇怪，但在这样做之后，它会工作一段时间（直到第三次或第四次编译，然后它再次停止工作）。

我无法理解为什么它有时会起作用，但它不会成为其他人。

这是我的广播接收者课程：

公共类BootCompletat扩展了BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {

    if ((intent.getAction() != null) && (intent.getAction().equals("android.intent.action.BOOT_COMPLETED"))){
        Log.d("BOOT COMPLETAT!! Inicio el servei","Iniciat");
        context.startService(new Intent(context, ServeiConnexio.class));      
    }else if((intent.getAction() != null) && (intent.getAction().equals("com.example.primerprograma.ALARMA_DISPARADA"))){
        Log.d("ALARMA!! Inicio el servei","Iniciat");
        context.startService(new Intent(context, ServeiConnexio.class)); 
    }
    Log.d("Detecto un esdeveniment: ",intent.getAction().toString());
    //Toast.makeText(context, "Detecto un esdeveniment", Toast.LENGTH_SHORT).show();
}

public static void SetAlarm(Context context){
    Log.d("Crido l'alarma","Cridant");
    int act = 1;
    //Toast.makeText(context, "Crido l'alarma", Toast.LENGTH_LONG).show();
    AlarmManager am=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
    // When it stops working, I change on the line below ServeiConnexio.class for BootCompletat.class
    // Then it starts working (it updates every second) and I change it back to ServeiConnexio.class. After that, it works for a while (???)
    Intent i = new Intent(context, ServeiConnexio.class);
    i.setAction("com.example.primerprograma.ALARMA_DISPARADA");
    PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
    am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), 1000 * 60 * act, pi); // Millisec * Second * Minute
}

}

这是我的ServiceClass：

公共类ServeiConnexio扩展了服务{

// Definim les variables que utilitzarem
private ArrayList<String> params_conn = new ArrayList<String>();
private String[] conn_params = null;
private ServidorsSQL factory = null;
private Funcions funcions = new Funcions();

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

public void onStart(Intent intent, int startid) {
    //Toast.makeText(this, "Iniciant servei", Toast.LENGTH_LONG).show();
    Log.d("SERVEI - He entrat a onStart", "onStart");

    factory = new ServidorsSQL(this,"Servidors", null,9);
    Log.d("Carrego info de tots els servidors","Carrego dades");
    funcions.llegeix(params_conn, factory);

    // Calling alarm
    Log.d("Executo alarma","");
    BootCompletat.SetAlarm(this);

    // Search for data to create the intent
    // The loop works perfectly and the intentservice works like charm
    // So it doesn't have anything to do with the alarm not working
    for(int m=0;m<params_conn.size();m++){
        Log.d("Entro al servei: " + Integer.toString(m),"Executo ConnectaSSH");
        // Partim els resultats en un array per poder-los passar a l'intent

        conn_params = params_conn.get(m).split("\n");

        Intent i = new Intent();
        i.putExtra("Resultats", conn_params);
        i.setClass(ServeiConnexio.this,IntentServeiConnexio.class);
        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        Log.d("Crido activity ConnectaSSH: " + Integer.toString(m),"IntentServeiConnexio");
        startService(i);
        Log.d("Finalitzo activity IntentServeiConnexio: ",Integer.toString(m));
    }
}

@Override
public void onDestroy() {
       Toast.makeText(getApplicationContext(), "Servei destruït",Toast.LENGTH_SHORT).show();
       super.onDestroy();
}

}

任何帮助都将受到赞赏，我已经绝望了

Answer 1

这段代码对我有用：

    // Start service using AlarmManager
     try {

        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.SECOND, 10);

        Intent intent = new Intent(this, YourService.class);

        PendingIntent pintent = PendingIntent.getService(this, 0, intent, 0);

        AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);



        alarm.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), 20000 , pintent); //20 second
        startService(new Intent(getBaseContext(), YourService.class));
        Log.d(tag, "Timer Started..");


} catch (Exception e) {
    Log.d(tag, "timer error: "+e);
    e.printStackTrace();
}

AlarmManager没有开火

1 个答案: