Android每秒都会从处理程序更新ui

概述我需要一点帮助,每秒从Runnable / Handler更新我的UI.我正在使用此代码： Runnable runnable = new Runnable() { @Override public void run() { handler.post(new Runnable() { @Over 我需要一点帮助,每秒从Runnable / Handler更新我的UI.我正在使用此代码：

Runnable runnable = new Runnable() {        @OverrIDe        public voID run() {                handler.post(new Runnable() {                    @OverrIDe                    public voID run() {                        prbar.setProgress(myProgress);                        y = (double) ( (double) myProgress/ (double) RPCCommunicator.totalPackets)*100;                        txtInfoSync1.setText(Integer.toString((int)y) + "%");                        prbar.setMax(RPCCommunicator.totalPackets);                        int tmp = totalBytesReceived - timerSaved;                        Log.w("","totalBytesReceived : "+totalBytesReceived + " timerSaved : "+timerSaved );                        Log.w("","tmp : "+tmp);                        if (avgSpeedCalc.size() > 10)                        {                            avgSpeedCalc.remove(0);                        }                        avgSpeedCalc.add(tmp);                        int x = 0;                        for (int y=0;y<avgSpeedCalc.size();y++)                        {                            x += avgSpeedCalc.get(y);                            Log.d("","x : "+x);                        }                        x = Math.round(x/avgSpeedCalc.size());                        Log.e("","x : "+x);                        timerSaved = totalBytesReceived;                        txtSpeed.setText(Integer.toString(x));                    }                });        }    };

我尝试使用handler.postDelayed(runnable,1000);在onCreate()中,但是runnable永远不会启动.或者即使我尝试使用runnable.run();,它仍然无法正常工作.

任何想法我怎么能开始runnable / handler并每秒更新一次ui？

解决方法 为什么要在runnable中创建runnable？

试试这个：

// flag that should be set true if handler should stopboolean mStopHandler = false;Runnable runnable = new Runnable() {    @OverrIDe    public voID run() {        // do your stuff - don't create a new runnable here!        if (!mStopHandler) {            mHandler.postDelayed(this,1000);        }    }};// start it with:mHandler.post(runnable);

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