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

*/

protectedvoidclearEditText(finalEditText editText,finalImageView delImageView) {

/文本框编辑的监听/

editText.addTextChangedListener(newTextWatcher() {

    @Override

    publicvoidonTextChanged(CharSequence arg0,intarg1,intarg2,intarg3) {

      // TODO Auto-generated method stub

    }

    @Override

    publicvoidbeforeTextChanged(CharSequence arg0,intarg1,intarg2,

                   intarg3) {

      // TODO Auto-generated method stub

    }

    @Override

    publicvoidafterTextChanged(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(newView.OnFocusChangeListener() {

    @Override

    publicvoidonFocusChange(View arg0,booleanarg1) {

      // 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(newView.OnClickListener() {

    @Override

    publicvoidonClick(View arg0) {

      // 执行清空EditText数据

      editText.setText("");

    }

  });

}