[Android Studio] FloatingActionButton could not be instantiated

问题描述

准备使用Android Studio新增一个空的项目，最低支持的Android版本为4.0.3，打开界面设计，提示

 Rendering Problems The following classes could not be instantiated:
- android.support.design.widget.FloatingActionButton (Open Class, Show Exception, Clear Cache)
 Tip: Use View.isInEditMode() in your custom views to skip code or show sample data when shown in the IDE  Exception Details android.content.res.Resources$NotFoundException: Unable to find resource ID #0x1080029   at android.content.res.Resources.getResourceName(Resources.java:2235)   at android.content.res.Resources.loadDrawableForCookie(Resources.java:2602)

解决方法

具体原因不清楚，Android Support Design library版本降低到23.1.0即可，修改build.gradle文件：

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.0'
    compile 'com.android.support:design:23.2.0'
}

改为

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.0'
    compile 'com.android.support:design:23.1.0'
}

重新build即可。