Android清空编辑框内容功能的实现实例代码

/** 
*清空编辑框按钮 
* @param editText 需要清空的EditText控件 
* @param delImageView 清空数据的图片 
*/ 
protected void clearEditText(final EditText editText, final ImageView delImageView) { 
/文本框编辑的监听/ 
editText.addTextChangedListener(new TextWatcher() {

    @Override
    public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
      // TODO Auto-generated method stub

    }

    @Override
    public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                   int arg3) {
      // TODO Auto-generated method stub

    }

    @Override
    public void afterTextChanged(Editable arg0) {
      // TODO Auto-generated method stub
      if(editText.getText().length()!=0){
        delImageView.setVisibility(View.VISIBLE);
      } else {
        delImageView.setVisibility(View.INVISIBLE);
      }
    }
  });
  /**焦点变化监听**/
  editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
    @Override
    public void onFocusChange(View arg0, boolean arg1) {
      // TODO Auto-generated method stub
      if(editText.getText().length()!=0){
      //删除图标显示
        delImageView.setVisibility(View.VISIBLE);
      } else {
      //删除图标隐藏
        delImageView.setVisibility(View.INVISIBLE);
      }
      if(arg1){
        //得到焦点
      } else {
        //失去焦点，删除图标隐藏
        delImageView.setVisibility(View.INVISIBLE);
      }
    }
  });
  //删除图标的点击监听事件
  delImageView.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View arg0) {
      // 执行清空EditText数据
      editText.setText("");
    }
  });
}