After updating Android Studio Its showing an error

Question

Error: The SDK Build Tools revision (19.0.3) is too low for project ':app'. Minimum required is 19.1.0

Answer 1

As written in error, SDK version is not compatible, So upgrade SDK Version to 19.1.0.

Most Importantly, read error properly and if you are not getting meaning of error then search a little bit before posting question here.

See this too : Android Studio Gradle BuildTools Revision

Answer 2

Change version for you buildToolsVersion in build.gradle:

android {
  compileSdkVersion 19  
  buildToolsVersion "19.1.0"
...
}