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浅谈EditText
阅读量:636 次
发布时间:2019-03-14

本文共 1209 字,大约阅读时间需要 4 分钟。

功能:编辑框中带有清除按钮,输入文本按钮显示,没有文本按钮隐藏,点击按钮可以清除所有的文本

页面布局

 代码监听事件

/**定义*/private EditText  phoneNumber;/**找到编辑框的位置*/phoneNumber = (EditText) findViewById(R.id.jianyi_qq_et);/* 监听 编辑框中的文本改变事件 */phoneNumber.addTextChangedListener(new TextWatcher() {@Overridepublic void onTextChanged(CharSequence s, int start, int before,int count) {/* ++ 文本每次改变就会跑这个方法 ++ */delPhoneNumber();/**隐藏密码 */phoneNumber.setTransformationMethod(PasswordTransformationMethod.getInstance());}@Overridepublic void beforeTextChanged(CharSequence s, int start, int count,int after) {delPhoneNumber();}@Overridepublic void afterTextChanged(Editable s) {delPhoneNumber();}});/**隐藏显示清除按钮的方法,注意是控件名的长度不是获得控件文本的长度*/private void delPhoneNumber() {if (phoneNumber.length() > 0) {fankui_img_cleanPhoneNum.setVisibility(View.VISIBLE);} else {fankui_img_cleanPhoneNum.setVisibility(View.INVISIBLE);}}

在介绍下EditText获取失去焦点的时候实现的一些操作

EditText searchView = (EditText) findViewById(R.id.search_text);searchView.setOnFocusChangeListener(new android.view.View.OnFocusChangeListener() {@Overridepublic void onFocusChange(View v, boolean hasFocus) {if (hasFocus) {// 此处为得到焦点时的处理内容} else {// 此处为失去焦点时的处理内容}}});

转载地址:http://ketoz.baihongyu.com/

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