Question

我有下面的代码，我想每5秒循环一次。我曾尝试使用broadcastreceiver和报警管理器，但没有成功。我希望我的服务循环5次，然后永久停止。这是我发布的第二个问题。请有人帮我修改代码，我在我的mac上堆积了2天。任何帮助将不胜感激。

代码每5秒循环一次

File key = new File(Environment.getExternalStorageDirectory(),"newfile"+Math.random()+".txt");
try {
    key.createNewFile();
} catch (IOException e) {
    e.printStackTrace();
}

InfoReceiver.class服务

public class InfoReceiver extends Service {

    @Override
    public void onCreate()
    {
        AlarmManager alarmMgr = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
        Intent intent = new Intent(this, MyBroadcastReceiver.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
        Calendar time = Calendar.getInstance();
        time.setTimeInMillis(System.currentTimeMillis());
        time.add(Calendar.SECOND, 5);
        alarmMgr.set(AlarmManager.RTC_WAKEUP, 5000, pendingIntent);
    }
}

InfoManager.class服务

public  class InfoManager extends Service {
    @Override
    public void onCreate() {
        File key = new File(Environment.getExternalStorageDirectory(),"newfile"+Math.random()+".txt");
        try {
            key.createNewFile();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

MyBroadcastreceiver.class

public class MyBroadcastReceiver extends BroadcastReceiver {
    private Context mContext;
    @Override
    public void onReceive(Context context, Intent intent) {
        Intent startServiceIntent = new Intent(context, InfoManager.class);
        context.startService(startServiceIntent);
    }
}

清单代码

<service
    android:name=".InfoReceiver"
    android:enabled="true" >
</service>
<service
    android:name=".InfoManager"
    android:enabled="true" >
    <intent-filter>
        <action android:name=".InfoManager" />
    </intent-filter>
</service>
<receiver
    android:name=".MyBroadcastReceiver"
    android:process=":remote" >
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
    </intent-filter>
</receiver>

Answer 1

使用Handler.postDelayed（Runnable r，long delayMillis）。您不需要计时器或警报管理器来执行您想要的操作。保持简单。

Answer 2

尝试使用timer代替日历，看看它是否适合您。

Answer 3

试试这个..

counter= new MyCount(5000,1000);
counter.start();

MyCount类......

static int n=0;
public class MyCount extends CountDownTimer{
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
@Override
public void onFinish() {

 if(n<5)
  {
    counter= new MyCount(5000,1000);
     counter.start();


   File key = new File(Environment.getExternalStorageDirectory(),"newfile"+Math.random()+".txt"); 
        try {
            key.createNewFile();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    n++;
   }

}
@Override
public void onTick(long millisUntilFinished) {
    s1=millisUntilFinished;

}
}

每5秒Android循环服务并在启动时启动

3 个答案: