默认的EditText填充值是多少?

时间:2014-07-03 14:09:40

标签: android layout android-edittext padding margins

我的EditText定义如下:

    <EditText
        android:id="@+id/input_password"
        android:hint="@string/password"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:inputType="textPassword" />

它有一些默认的填充,看起来像“显示布局边界”选项:enter image description here(或者它真的是边缘,我不确定。我指的是红色内盒之间的空格和蓝色的角落)。但这些填充/边距的价值是多少?在platforms/android-19/data/res/values/themes.xml我发现Widget.EditText样式定义如下:

<style name="Widget.EditText">
    <item name="android:focusable">true</item>
    <item name="android:focusableInTouchMode">true</item>
    <item name="android:clickable">true</item>
    <item name="android:background">?android:attr/editTextBackground</item>
    <item name="android:textAppearance">?android:attr/textAppearanceMediumInverse</item>
    <item name="android:textColor">?android:attr/editTextColor</item>
    <item name="android:gravity">center_vertical</item>
</style>

但没有提到边距/填充。那么他们在哪里定义?

1 个答案:

答案 0 :(得分:2)

此问题来自默认值?android:attr/editTextBackground

<inset xmlns:android="http://schemas.android.com/apk/res/android"
    android:insetBottom="@dimen/abc_edit_text_inset_bottom_material"
    android:insetLeft="@dimen/abc_edit_text_inset_horizontal_material"
    android:insetRight="@dimen/abc_edit_text_inset_horizontal_material"
    android:insetTop="@dimen/abc_edit_text_inset_top_material">

    <selector>
        <item
            android:drawable="@drawable/abc_textfield_default_mtrl_alpha"
            android:state_enabled="false" />
        <item
            android:drawable="@drawable/abc_textfield_default_mtrl_alpha"
            android:state_focused="false"
            android:state_pressed="false" />
        <item android:drawable="@drawable/abc_textfield_activated_mtrl_alpha" />
    </selector>

</inset>

您可以看到EditText所有边缘的插入值为4dp。这使得EditText在其内容周围具有较小的填充。 要删除该填充,您应该使用修改后的editTextBackground属性创建一个新的EditText样式。例如:

<style name="Widget.App.TextField" parent="@style/Widget.AppCompat.EditText">
        <item name="colorControlActivated">#303E44</item>
        <item name="colorControlHighlight">#E5E9EC</item>
        <item name="colorControlNormal">#E5E9EC</item>
        <item name="editTextBackground">@drawable/background_new_edit_text</item>
<item name="android:editTextBackground">@drawable/background_new_edit_text</item>
    </style>

background_new_edit_text.xml

<?xml version="1.0" encoding="utf-8"?>
<inset xmlns:android="http://schemas.android.com/apk/res/android"
    android:inset="@dimen/spacing_0dp">
    <selector>
        <item
            android:drawable="@drawable/abc_textfield_default_mtrl_alpha"
            android:state_enabled="false" />
        <item
            android:drawable="@drawable/abc_textfield_default_mtrl_alpha"
            android:state_focused="false"
            android:state_pressed="false" />
        <item android:drawable="@drawable/abc_textfield_activated_mtrl_alpha" />
    </selector>

</inset>

将新样式应用于您的EditText

<EditText
        android:id="@+id/edt_phone"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/Widget.Couriers.TextField"
        />