vectorDrawable使用报错

异常信息：

Can't process attribute android:fillColor="@color/colorPrimary": references to other resources are not supported by build-time PNG generation. See http://developer.android.com/tools/help/vector-asset-studio.html for details.

解决方法：

修改 app.gradle,增加以下内容

//在gradle2.0及以上：

android {

    defaultConfig {

        vectorDrawables.useSupportLibrary = true

        }

}

//在gradle 1.5以前

android {

    defaultConfig {

// Stops the Gradle plugin’s automatic rasterization of vectors

    generatedDensities = []

}

// Flag to tell aapt to keep the attribute ids around

    aaptOptions {

     additionalParameters "--no-version-vectors"

    }

}