Android布局XML中的app:srcCompat和android:src之间的区别 [英] Difference between app:srcCompat and android:src in Android's layout XML

问题描述

每当我使用Android Studio的Vector Assets创建带有图标的ImageView时，在app:srcCompat="@drawable/ic_play"

Whenever I create an ImageView with icon added using Android Studio's Vector Assets, I'm getting an error at the line app:srcCompat="@drawable/ic_play"

当我用android:src更改app:srcCompat时，错误消失了，但是图标看起来像是像素化的.

When I change the app:srcCompat with android:src, the error is gone but the icon looks pixelated.

app:srcCompat="@drawable/ic_play"

和

android:src="@drawable/ic_play"

推荐答案

app:srcCompat

是集成 vector drawables .矢量可绘制对象可让您用XML中定义的单个矢量图形替换多个png资产.虽然以前只限于棒棒糖和更高版本的设备

is the most foolproof method of integrating vector drawables into your app.Vector drawables allow you to replace multiple png assets with a single vector graphic, defined in XML. While previously limited to Lollipop and higher devices

注意

截至 Android支持库23.3.0 >， 支持向量可绘制对象 只能通过 app:srcCompat 加载.

As of Android Support Library 23.3.0, support vector drawables can only be loaded via app:srcCompat .

您需要将 vectorDrawables.useSupportLibrary = true 添加到您的build.gradle文件

you need to add vectorDrawables.useSupportLibrary = true to your build.gradle file

    // Gradle Plugin 2.0+  
 android {  
   defaultConfig {  
     vectorDrawables.useSupportLibrary = true  
    }  
 }  

android:src

android:src

设置一个可绘制对象作为此ImageView的内容，它将显示在 它的原始大小.没有自动缩放.

Sets a drawable as the content of this ImageView.It will display in its original size. No automatic scaling .

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