下拉菜单会忽略Android布局填充 [英] Android layout padding is ignored by dropdown

问题描述

以xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="20dp">

    <Button
        android:id="@+id/locationButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:minWidth="46dip"
        android:onClick="getLocation"
        android:text="@string/icon_map_marker" />

    <AutoCompleteTextView
        android:id="@+id/autocomplete_city"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:hint="@string/city_hint"
        android:inputType="text"
        android:layout_alignBottom="@+id/locationButton"
        android:layout_alignTop="@id/locationButton"
        android:layout_toLeftOf="@id/locationButton"
        android:dropDownWidth="match_parent"
        />

    <requestFocus />

</RelativeLayout>

如您所见

android:dropDownWidth="match_parent"

忽略相对布局的填充.有任何解决方法的想法吗?

ignores the padding of the relative layout. Any ideas how to fix this?

推荐答案

已解决.我必须定义另一个仅包含自动完成文本视图和按钮的相对布局.该布局是弹出窗口的锚点，将相对布局的宽度作为自己的宽度.关键:

Solved it. I had to define another relative layout wrapping only the autocomplete textview and the button. This layout is the anchor of the popup, taking the width of the relative layout as its own width.The key:

android:dropDownWidth="wrap_content"
android:dropDownAnchor="@+id/anchor"

简短版本:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="20dp" >

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/anchor" >

        <Button
            android:id="@+id/locationButton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true" />

        <AutoCompleteTextView
            android:id="@+id/autocomplete_city"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignBottom="@+id/locationButton"
            android:layout_alignTop="@id/locationButton"
            android:layout_centerHorizontal="true"
            android:layout_toLeftOf="@id/locationButton"
            android:dropDownWidth="wrap_content"
            android:hint="@string/city_hint"
            android:dropDownAnchor="@+id/anchor" />

        <requestFocus />

    </RelativeLayout>

</RelativeLayout>

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