我想创建一个服务，即下载一个文本文件[背景]每隔几分钟。

I want to create a service, that downloads a textfile [in background] every few minutes.

-BootStartU preciver.Java

public class BootStartUpReciver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Intent service = new Intent(context, DownloadService.class);
        context.startService(service);
        Log.e("Autostart", "started");
    }
}

-DownloadService.Java

public class DownloadService extends Service {
    @Override
    public void onCreate() {
        super.onCreate();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Download.start();
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
    }

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

    public Thread Download = new Thread() {
        public void run() {
            try {
                URL updateURL = new URL("MYURLHERE");
                URLConnection conn = updateURL.openConnection();
                InputStream is = conn.getInputStream();
                BufferedInputStream bis = new BufferedInputStream(is);
                ByteArrayBuffer baf = new ByteArrayBuffer(50);

                int current = 0;
                while ((current = bis.read()) != -1) {
                    baf.append((byte) current);
                }

                final String s = new String(baf.toByteArray());
                Log.e("Done", "Download Complete : " + s);
            }
            catch (Exception e) {
                Log.e("Downladoing", "exception", e);
            }
        }
    };
}

这code工作正常，但只有一次。谁能告诉我怎么可以让它重复（背景）每隔几分钟（15为例）？而且我觉得我的的manifest.xml 是正确的，因为该服务已经在运行。

This Code is working fine, but only once. Can anyone tell me how I can make it repeat (in background) every few minutes (15 for example)? And i think my manifest.xml is correct because the service is already running.

推荐答案

确定试试这个在您的服务类

ok try this in your service class

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
   // TODO Auto-generated method stub      
   Timer timer = new Timer();
        TimerTask task = new TimerTask() {       
            @Override
            public void run() {
                 Download.start();
            }
        };
        timer.schedule(task, 0, (60000 * 15));// In ms 60 secs is 60000 
        // 15 mins is 60000 * 15


return START_STICKY;
}

广播接收器启动服务和服务在后台运行的每15分钟，这比报警经理/等待更好的意图 - 没有唤醒锁，电池耗尽等..让我知道，如果它可以帮助

broadcast receiver starts the service and the service runs every 15mins in the background, this is better than alarm manager/pending intent - no wake lock, draining of battery etc.. let me know if it helps