洛阳营销型网站百度推广的费用
参考：
EditText属性及一些常用用法
一个仿京东商城的个人练手项目
使用TextInputLayout创建一个登陆界面
Android Material Design–TextInputLayout
TextInputLayout控件和LinearLayout完全一样，它只是一个容器。
跟ScrollView一样，TextInputLayout只接受一个子元素。子元素需要是一个EditText元素。
将布局控件TextInputLayout套在编辑框TextInputEditText或EditText外，当用户编辑时会把指定的hint（无输入时的提示信息）内容上浮显示为标题，支持计数、错误及密码可见控制图标等属性的设置。
public class TextInputLayout extends LinearLayout {...}示例：
导入依赖
compile 'com.android.support:design:25.3.1'compile 'com.android.support:appcompat-v7:25.3.1'布局：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:background="#e3e3e3"android:orientation="vertical"android:padding="@dimen/activity_horizontal_margin"><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="0.5"android:orientation="vertical"><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_centerInParent="true"android:gravity="center"android:text="Welcome"android:textColor="#333333"android:textSize="30sp" /></RelativeLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="0.5"android:orientation="vertical"><android.support.design.widget.TextInputLayoutandroid:id="@+id/usernameWrapper"android:layout_width="match_parent"android:layout_height="wrap_content"><EditTextandroid:id="@+id/username"android:layout_width="match_parent"android:layout_height="wrap_content"android:drawableLeft="@drawable/icon_user"android:drawablePadding="5dp"android:hint="请输入账号"android:inputType="textEmailAddress"android:paddingLeft="5dp" /></android.support.design.widget.TextInputLayout><android.support.design.widget.TextInputLayoutandroid:id="@+id/passwordWrapper"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginTop="4dp"app:passwordToggleEnabled="true"><EditTextandroid:id="@+id/password"android:layout_width="match_parent"android:layout_height="wrap_content"android:drawableLeft="@drawable/icon_pwd"android:drawablePadding="5dp"android:hint="请输入密码"android:inputType="textPassword"android:paddingLeft="5dp" /></android.support.design.widget.TextInputLayout><Buttonandroid:id="@+id/btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginTop="4dp"android:onClick="onClick"android:text="Login" /></LinearLayout></LinearLayout>显示密码：
TextInputLayout设置passwordToggleEnabled为true，
EditText设置inputType为textPassword，
默认情况下输入内容是以点的形式显示。
点击图标之后便会显示明文，再点一下又会显示密文，如此反复切换。
字数限制：
TextInputLayout节点下：
app:counterEnabled="true"app:counterMaxLength="10"app:counterOverflowTextAppearance="@style/HintErrorAppearance"style/HintErrorAppearance：定义超出个数提示字体颜色
<style name="HintErrorAppearance" parent="TextAppearance.AppCompat"><item name="android:textSize">16sp</item><item name="android:textColor">#ff0000</item><item name="textColorError">#ff0000</item></style>Activity：
public class MyActivityI extends AppCompatActivity {private TextInputLayout usernameWrapper, passwordWrapper;private static final String EMAIL_PATTERN = "^[a-zA-Z0-9#_~!$&'()*+,;=:.\"(),:;<>@\\[\\]\\\\]+@[a-zA-Z0-9-]+(\\.[a-zA-Z0-9-]+)*$";//邮箱验证private Pattern pattern = Pattern.compile(EMAIL_PATTERN);private Matcher matcher;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.login);usernameWrapper = (TextInputLayout) findViewById(R.id.usernameWrapper);passwordWrapper = (TextInputLayout) findViewById(R.id.passwordWrapper);}public void onClick(View v) {hideKeyboard();//隐藏键盘String username = usernameWrapper.getEditText().getText().toString();//获取数据String password = passwordWrapper.getEditText().getText().toString();//错误判断：setErrorEnabled和setErrorif (!validateEmail(username)) {//校验邮箱usernameWrapper.setError("Not a valid email address!");} else if (!validatePassword(password)) {//校验密码passwordWrapper.setError("Not a valid password!");} else {usernameWrapper.setErrorEnabled(false);passwordWrapper.setErrorEnabled(false);doLogin();}}private void hideKeyboard() {View view = getCurrentFocus();if (view != null) {((InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE)).hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);}}public boolean validateEmail(String email) {matcher = pattern.matcher(email);return matcher.matches();}public boolean validatePassword(String password) {Log.e("111", "password==" + password);Log.e("111", "password.length()==" + password.length());Log.e("111", "password.length()> 5==" + (password.length() > 5));return password.length() > 5;}public void doLogin() {Toast.makeText(getApplicationContext(), "OK! I'm performing login.", Toast.LENGTH_SHORT).show();}}修改光标、下划线、floatText的颜色
res\values\styles.xml 中
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"><!--改变光标、下划线、floatText的颜色--><item name="colorAccent">#ff4081</item></style>