Android TextView：只有创建视图层次结构的原始线程才能接触其视图

我全局声明了我的文本视图和计时器计数：

TextView txMp3Prog;
int timer_count=0;

在onCreate（）中，我做到了

我试图得到歌曲的持续时间，并设置如下文本

  txMp3Prog.setText("00:0"+String.valueOf(timer_count));

文本设置在这里

@Override
    public void run() {
        // TODO Auto-generated method stub
          int currentPosition= 0;
            int total = mp.getDuration();
            while (mp!=null && currentPosition<total) {
                try {
                    Thread.sleep(1000);
                    currentPosition= mp.getCurrentPosition();
                } catch (InterruptedException e) {
                    return;
                } catch (Exception e) {
                    return;
                }        

                sbMusicProgress.setProgress(currentPosition);

                timer_count++;
                System.out.println( "Current position: "+timer_count);
                txMp3Prog.setText("00:0"+String.valueOf(timer_count));


               String  currenttext = String.valueOf(currentPosition);
                String songDuration = currenttext.substring(0, currenttext.length() / 2); 


            }

如何在run方法中将文本正确设置为textview。

如日志中所示：

CalledFromErrorThreadException:仅创建的原始线程 视图层次可以触及其视图

---

表示您正试图从非UI线程更新或访问UI元素，因此使用或从非UI线程更新视图

除主UI线程外，其他线程无法访问或更改UI的行为

你需要用这个

runOnUiThread(new Runnable() {
public void run() {
    MyClass.this.txMp3Prog.setText("00:0"+String.valueOf(timer_count));
    }
});

---

可能重复您在线搜索过吗？您不能在其他线程和runnable中触摸UI小部件。因此需要调用runOnUiThread（）。

   07-02 11:25:36.575: E/AndroidRuntime(9418): FATAL EXCEPTION: Thread-13294
    07-02 11:25:36.575: E/AndroidRuntime(9418): android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:4867)
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at android.view.ViewRootImpl.invalidateChildInParent(ViewRootImpl.java:979)
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at android.view.ViewGroup.invalidateChild(ViewGroup.java:4306)
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at android.view.View.invalidate(View.java:10519)
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at android.view.View.invalidate(View.java:10474)
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at android.widget.TextView.checkForRelayout(TextView.java:6603)
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at android.widget.TextView.setText(TextView.java:3710)
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at android.widget.TextView.setText(TextView.java:3568)
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at android.widget.TextView.setText(TextView.java:3543)
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at package.ResultatMultiple.run(ResultatMultiple.java:290)
    07-02 11:25:36.575: E/AndroidRuntime(9418):     at java.lang.Thread.run(Thread.java:856)

runOnUiThread(new Runnable() {
public void run() {
    MyClass.this.txMp3Prog.setText("00:0"+String.valueOf(timer_count));
    }
});