安卓裁剪背景 [英] Android crop background

问题描述

我有一个 LinearLayout，宽度设置为 fill_parent，高度设置为 wrap_content.现在我想给它一个 png 文件的背景，但是以传统方式这样做会导致 LinearLayout 调整大小以显示整个背景而不是裁剪附加部分.

I have a LinearLayout with width set to fill_parent and height to wrap_content. Now I want to give it a background from a png file, but doing it in a traditional way causes the LinearLayout to resize in order to show the whole background instead of cropping the additional part.

如何设置 LinearLayout 的背景使其不会调整大小?

How can I set the background of LinearLayout so it won't resize?

谢谢

推荐答案

看来只有使用 ImageView 并相应地设置 scaleType 参数才能实现.一个快速的解决方法是使用 FrameLayout 并将 ImageView 放在另一个具有透明背景的布局下.

It appears that such thing is achievable only using the ImageView and setting the scaleType parameter accordingly. A quick workaround is to use FrameLayout and put the ImageView under another layout with transparent background.

代码:

<FrameLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scaleType="centerCrop"
        android:src="@drawable/background" />

</FrameLayout>

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