android - ScrollView 套 ImageView 显示异常

Question

<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/img_background"
            android:scaleType="fitXY"/>

    </ScrollView>
    
</CoordinatorLayout>   

为了解决键盘弹出时背景图不被压缩才这样布局，可是里面的 ImageView中显示的图片却没有按照规定的大小显示，而是按照图片本身的尺寸显示，导致了在不同分辨率下图片显示不同（即便高度写死如200dp 还是按照图片本身的尺寸显示），所以在Nexus6p这种高分辨率的机型上底部会有未被 ImageView 覆盖到的区域，显示为白色。求解~

Answer 1

When ScrollView does not have fillViewport="true", the elements inside (such as LinearLayout) will be calculated according to wrap_content (regardless of whether it has "match_parent" set)

Answer 2

In the Mainfest.xml file, write android:windowSoftInputMode="adjustPan" to this Activity to prevent the interface from being crowded by the pop-up keyboard.