Android :: findViewByID-如何通过另一个UI元素的侦听器获取TextView的视图? [英] Android::findViewByID - how can I get View of a TextView through a Listener of another UI element?

问题描述

这将是一个la脚的问题.我有以下代码:

This is going to be a bit lame question. I have the following code:

..............
 public void onCreate (Bundle bundle)
 {
  super.onCreate(bundle);
  this.setContentView(R.layout.main2);
  Button bnt = (Button) this.findViewById(R.id.browser);
  bnt.setOnClickListener(new ButtonListener());

 }
..............
class ButtonListener implements android.view.View.OnClickListener
{

 public void onClick(View v) 
 {
  // I have a TextView in my xml layout file. 
  // I'd like to get it and change my text when I click this button.
  // But I can't get it (the TextView) unless I make it as a value of a static member of this class and pass it to the constructor. 
  //I believe I am missing a big point here, so i'd be very thankful if you could explain how this is meant to be done ? 

 }
}

感谢您的帮助.

推荐答案

您可以尝试以下方法:

class ButtonListener implements android.view.View.OnClickListener {
    public void onClick(View v) {
        View parent = (View)v.getParent();
        if (parent != null) {
            TextView txtView = parent.findViewById(R.id.mytextview);
            txtView.setText(...);
        }
    }
}

用法取决于您的布局.可能是按钮的父级不是textview的父级，所以请注意...

the usage depends on your layout. Its possible, that the parent of your button is not the parent of your textview so be careful...

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