Question

所以我实现了一个调用timeTask扩展名的计时器，名为labelsTimer。该方法应该将文本的标签更改为代码中规定的标签，而是抛出错误

android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.

这是代码

public class labelsTimer extends TimerTask {
EditText label;

labelsTimer(EditText label)
{   super();
    this.label = label;
}
@Override
public void run()
{

    System.out.print("fsdfsd");
    label.setText("hehehehe");
}

}

Answer 1

使用此

public void run(){
    runOnUiThread(new Runnable() {
      @Override
      public void run() {
        label.setText("hehehehe");
      }
    });
}

Answer 2

更改此包装线程中的标签

try {
    runOnUiThread(new Runnable() {

         @Override
         public void run() {
             label.setText("hehehehe");
         }
    });          
} catch (InterruptedException e) {
     e.printStackTrace();
}

更改edittext上的标签

2 个答案: