Question

需要更改服务运行的时间间隔，即服务已经运行的时间唤醒并开始运行服务本身。我无法做到，因为在我的服务类中有一个激活服务后 ServiseExample 更多的错过以某种方式阻止它并开始使用新参数编织。怎么做？这是我的主要课程：

public class ServiceExample extends Service {
    public static Cursor c;
    public static int INTERVAL =1000;
    // 60 min = 3600000
    public static final int FIRST_RUN = 5; // 5 seconds
    int REQUEST_CODE = 11223344;
    private RepeatingAlarmService mSMSreceiver;
    private IntentFilter mIntentFilter;
    static AlarmManager alarmManager;

    @Override
    public void onCreate() {
        super.onCreate();
        mSMSreceiver = new RepeatingAlarmService();
        mIntentFilter = new IntentFilter();
        mIntentFilter.addAction("android.provider.Telephony.SMS_RECEIVED");
        registerReceiver(mSMSreceiver, mIntentFilter);
        startService(INTERVAL);
        Log.v(this.getClass().getName(), "onCreate(..)");
    }

    @Override
    public IBinder onBind(Intent intent) {
        Log.v(this.getClass().getName(), "onBind(..)");
        return null;
    }

    @Override
    public void onDestroy() {
        unregisterReceiver(mSMSreceiver);
        if (alarmManager != null) {
            Intent intent = new Intent(this, RepeatingAlarmService.class);
            alarmManager.cancel(PendingIntent.getBroadcast(this, REQUEST_CODE, intent, 0));
        }
        Toast.makeText(this, "Service Stopped!", Toast.LENGTH_LONG).show();
        Log.v(this.getClass().getName(), "Service onDestroy(). Stop AlarmManager at " + new
                java.sql.Timestamp(System.currentTimeMillis()).toString());
    }

    void startService(int interval) {
        Intent intent = new Intent(this, RepeatingAlarmService.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, REQUEST_CODE, intent, 0);
        alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
        alarmManager.setRepeating(
                AlarmManager.ELAPSED_REALTIME_WAKEUP,
                SystemClock.elapsedRealtime() + FIRST_RUN,
                interval,
                pendingIntent);
        Toast.makeText(this, "Service Started.", Toast.LENGTH_LONG).show();
        Log.v(this.getClass().getName(), "AlarmManger started at " + new

                java.sql.Timestamp(System.currentTimeMillis()).toString());

    }
}

以下是在一段时间后进入我服务的课程：

public class RepeatingAlarmService extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(context.CONNECTIVITY_SERVICE);
        NetworkInfo nInfo = connMgr.getActiveNetworkInfo();
        android.net.NetworkInfo wifi = connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        android.net.NetworkInfo mobile = connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        if(( (wifi.isAvailable() || mobile.isAvailable()) && nInfo != null && nInfo.isConnected()  ))
        {
            Toast.makeText(context,"Error Send" + e,Toast.LENGTH_LONG).show();
        }
    } else  {

        //   CHANGE INTERVAL HERE
        Toast.makeText(context,"Connection False or interval is not good",Toast.LENGTH_LONG).show();
    }
}

抱歉我的英文。

Answer 1

我觉得在处理程序中将你的工作放到seprate进程中是很好的，然后你可以轻松地完成它：

private int x = 1000; // this must be declared in your class body not in its methods;
final Handler hand = new Handler();
x = 1000;
hand.post(new Runnable(){
@override
public void run(){
    Toast.makeText(getApplicationContext(),"something to tell",1).show();
    if(x == 1000){
        x = 2000;
    }else{
        x = 1000;
    }
    hand.postDelayed(this,x);
}
}

我在我的应用程序服务中做了什么，当我想要间歇性地执行任务时，它就像一个魅力。试试!!

Answer 2

要更改重复间隔，只需使用新间隔再次执行此代码：

    Intent intent = new Intent(this, RepeatingAlarmService.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(this, REQUEST_CODE, intent, 0);
    alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
    alarmManager.setRepeating(
            AlarmManager.ELAPSED_REALTIME_WAKEUP,
            SystemClock.elapsedRealtime() + interval,
            interval,
            pendingIntent);

当您致电setRepeating()时，如果已经设置了匹配Intent的闹钟，则在设置新闹钟之前该闹钟将被取消。

如何更改已包含服务执行的时间间隔？

2 个答案: