布局adjustViewBounds不起作用

Posted 2021-04-15

我希望ImageView保持其宽高比与layout_height = match_parent，但我不知道为什么会发生这种情况？

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <LinearLayout
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <ImageView
           android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:adjustViewBounds="true"
            android:background="@drawable/bob" />
        <TextView
            android:gravity="center"
          android:textAppearance="@style/TextAppearance.AppCompat.Headline"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Bob" />
    </LinearLayout>
</LinearLayout>

答案

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <LinearLayout
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <ImageView
           android:layout_width="wrap_content"
            android:layout_height="match_parent"

            android:background="@drawable/bob" />
        <TextView
            android:gravity="center"
          android:textAppearance="@style/TextAppearance.AppCompat.Headline"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Bob" />
    </LinearLayout>
</LinearLayout>

另一答案

用于设置全图像视图scaletype = fitxy