All was fine until i updated the android studio to Canary 6, When i rebuild or clean or whatever with project it\'s throw :
A failure occurred while exec
The advantage of adding a multi-density vector graphic is to use a vector instead of a bitmap to reduce the size of the APK because the size of the same file can be adjusted for different screen densities without loss off image quality. For older versions of Android that don't support vector drawables, Vector Asset Studio can, at build time, turn your vector drawables into different bitmap sizes for each screen density
classpath 'com.android.tools.build:gradle:3.0.0-alpha8
build.gradle
android {
defaultConfig {
vectorDrawables.useSupportLibrary = true
}
}