Input Type

类型	描述
textUri	Text that will be used as a URI
textEmailAddress	Text that will be used as an e-mail address
textPersonName	Text that is the name of a person
textPassword	Text that is a password that should be obscured
number	A numeric only field
phone	For entering a phone number
date	For entering a date
time	For entering a time
textMultiLine	Allow multiple lines of text in the field

<EditText
  android:inputType="textCapSentences|textMultiline"
/>

单行显示

<EditText
  android:singleLine="true"
  android:lines="1"
/>

限制输入字符

<EditText
  android:inputType="number"
  android:digits="01"
/>

限制字符总数

<EditText
  android:maxLength="5"
/>

设置选定文本的高亮背景颜色

<EditText
    android:textColorHighlight="#7cff88"
/>

edit-highlight-color.png

设置输入框底边颜色

1. 导入AppCompat库
2. 修改样式colorControlNormal、colorControlActivated、colorControlHighlight

<style name="Theme.App.Base" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="colorControlNormal">#d32f2f</item>
    <item name="colorControlActivated">#ff5722</item>
    <item name="colorControlHighlight">#f44336</item>
</style>

edit-bottom-color.png

显示浮动标签提示

1. 导入design support library
2. 使用TextInputLayout包裹EditText：

  <android.support.design.widget.TextInputLayout
    android:id="@+id/username_text_input_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <EditText
        android:id="@+id/etUsername"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:ems="10"
        android:hint="Username" />

  </android.support.design.widget.TextInputLayout>

3. 使用setError和setErrorEnabled方法设置显示错误消息

private void setupFloatingLabelError() {
    final TextInputLayout floatingUsernameLabel = (TextInputLayout) findViewById(R.id.username_text_input_layout);
    floatingUsernameLabel.getEditText().addTextChangedListener(new TextWatcher() {
        // ...
        @Override
        public void onTextChanged(CharSequence text, int start, int count, int after) {
            if (text.length() > 0 && text.length() <= 4) {
                floatingUsernameLabel.setError(getString(R.string.username_required));
                floatingUsernameLabel.setErrorEnabled(true);
            } else {
                floatingUsernameLabel.setErrorEnabled(false);
            }
        }
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, 
                                      int after) {
            // TODO Auto-generated method stub
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });
}

edit-float.gif

添加字符计数

TextInputLayout需要添加app:counterEnabled和app:CounterMaxLength属性，或者使用setCounterEnabled()和setCounterMaxLength()方法

<android.support.design.widget.TextInputLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:counterEnabled="true"
    app:counterMaxLength="10"
    app:counterTextAppearance="@style/counterText"
    app:counterOverflowTextAppearance="@style/counterOverride">
    <EditText
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:hint="Username"
       android:layout_centerHorizontal="true"
       android:layout_centerVertical="true"
       android:ems="10"
       android:hint="Username" />
</android.support.design.widget.TextInputLayout>

edit-character-counting.png

切换密码可见性

• passwordToggleEnabled 启用或禁用密码可见性的切换
• passwordToggleDrawable 更改默认的图标
• passwordToggleTint 更改默认的颜色

<android.support.design.widget.TextInputLayout
        android:id="@+id/username_text_input_layout"
        app:passwordToggleEnabled="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/etUsername"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:ems="10"
            android:inputType="textPassword"
            android:hint="Username" />

    </android.support.design.widget.TextInputLayout>

edit-password-toggle.png

自定义

提示文本可以通过定义app:hintTextAppearance来设置样式，并且可以使用app:errorTextAppearance更改错误文本。 通过定义app:counterTextAppearance和app:counterOverflowTextAppearance，计数器文本和溢出文本也可以有自己的文本样式。 我们可以使用textColor，textSize和fontFamily来帮助更改颜色，大小或字体：

<style name="counterText">
  <item name="android:textColor">#aa5353cc</item>
</style>

<style name="counterOverride">
  <item name="android:textColor">#ff0000</item>
</style>