Manifest merger failed : uses-sdk:minSdkVersion 10 cannot be smaller than version L declared in library com.android.support:appcompat-v7:21.0.0-rc1

Question

Got the above error after downloading L preview release version in Android Studio, when my project had minSdkVersion 19.

Furthermore, when

Answer 1

To force working with a working version Just change the gradle dependencies like this:

dependencies {
    compile 'com.android.support:gridlayout-v7:19.0.1'
    compile 'com.android.support:appcompat-v7:19+'
    ...
}

was:

compile 'com.android.support:appcompat-v7:+'

N.B.

I updated Tools & Extras in the SDK manager.

after the project was broken I fixed it as shown above.

For now I do not update android L & 4.4W (enough bugs for today :-( )