从拉伸的看法prevent背景图片 [英] Prevent background image from stretching the view

问题描述

每当分配背景到铺有WRAP_CONTENT的图，如果背景图像比的图时，图像被拉伸，以便它可以容纳整个背景。为什么会这样，以及如何prevent呢？它发生，即使图像9补丁，并具有拉伸区域标记 - 为什么不是图像缩小到视图的大小

Whenever I assign background to a view that is laid out with wrap_content, if the background image is larger than a view, the view is stretched so that it can hold the entire background. Why is it so and how to prevent it? It occurs even if the image is 9-patch and has stretchable areas marked - why isn't the image shrunk to the size of the view?

推荐答案

您可以使用RelativeLayout的，并在里面创建两个元素。一个ImageView的背景和另一种观点认为对您的内容。使用安卓layout_alignBottom 的ImageView的和值设置为你的内容视图的ID。另外设置的ImageView的scaleType到fitXY。

You can use RelativeLayout and create two elements inside it. An ImageView for the Background and another view for your content. Use the android:layout_alignBottom to the the ImageView and set the value to the id of your content view. Also set the scaleType of the ImageView to fitXY.

<RelativeLayout android:id="@+id/relativeLayout1" 
  android:layout_height="wrap_content" 
  android:layout_gravity="center" 
  android:layout_width="fill_parent">

<ImageView android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:scaleType="fitXY"
  android:src="@drawable/chronometer_bg"
  android:id="@+id/imageView_chronometerBackground"
  android:layout_alignBottom="@id/chronometer" />

<Chronometer android:text="Chronometer"
      android:id="@+id/chronometer" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_centerHorizontal="true"
      android:textSize="32sp"
      android:gravity="center" />

</RelativeLayout>

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