android - ImageView 不在 CardView 的中心

Question

我有一张正方形图片，我的 CardView 中的 ImageView 也是正方形的，但它向我展示了这样一张图片:

原图:

这是我的布局文件:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.card.MaterialCardView 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="wrap_content"
    app:cardBackgroundColor="@android:color/white"
    app:cardElevation="2dp"
    app:cardPreventCornerOverlap="true"
    android:layout_margin="10dp">

    <LinearLayout
        android:id="@+id/linearLayout"
        android:layout_width="374dp"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <ImageView
            android:id="@+id/illness_image"
            android:layout_width="364dp"
            android:layout_height="364dp"
            android:background="?attr/colorPrimaryDark"
            android:cropToPadding="true" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:padding="16dp">

            <TextView
                android:id="@+id/illness_title"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Title"
                android:textAppearance="?attr/textAppearanceHeadline6"
                android:textSize="20sp" />

            <TextView
                android:id="@+id/illness_description"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Description"
                android:textAppearance="?attr/textAppearanceBody2"
                android:textSize="10sp" />

            <TextView
                android:id="@+id/illness_engagement"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="right"
                android:text="Engagment"
                android:textAppearance="?attr/textAppearanceBody2"
                android:textSize="10sp" />
        </LinearLayout>
    </LinearLayout>
</android.support.design.card.MaterialCardView>

编辑:对不起，但我不明白。我无法插入我的 XML 代码。

Answer 1

只要在你的 ImageView 中添加 android:layout_gravity="center" 就可以了

试试这个

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.card.MaterialCardView 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="wrap_content"
    android:layout_margin="10dp"
    app:cardBackgroundColor="@android:color/white"
    app:cardElevation="2dp"
    app:cardPreventCornerOverlap="true">

    <LinearLayout
        android:id="@+id/linearLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <ImageView
            android:id="@+id/illness_image"
            android:layout_width="350dp"
            android:layout_height="364dp"
            android:layout_gravity="center"
            android:scaleType="centerInside"
            android:src="@drawable/dishu" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:padding="16dp">

            <TextView
                android:id="@+id/illness_title"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Title"
                android:textAppearance="?attr/textAppearanceHeadline6"
                android:textSize="20sp" />

            <TextView
                android:id="@+id/illness_description"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Description"
                android:textAppearance="?attr/textAppearanceBody2"
                android:textSize="10sp" />

            <TextView
                android:id="@+id/illness_engagement"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="right"
                android:text="Engagment"
                android:textAppearance="?attr/textAppearanceBody2"
                android:textSize="10sp" />
        </LinearLayout>
    </LinearLayout>
</android.support.design.card.MaterialCardView>