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

Just in addition: The other answers here did not fix the problem for me, but I found an alternate way to fix the android-l problem on Android Studio 0.8.0. After I did change the dependencies in the build.gradle, the problem sadly kept occuring, that the code would say OLD_SKD. I'm using a Galaxy S2.

Apart from changing all things to :19+:

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:19+'
    compile 'com.android.support:support-v4:19+'
    compile 'com.google.android.gms:play-services:+'
    compile 'com.android.support:mediarouter-v7:19+'
}

It still would not work, so I had to move back everywhere possible:

android {
    compileSdkVersion 19
    buildToolsVersion '19.1'
    defaultConfig {
        minSdkVersion 11
        targetSdkVersion 19
        versionCode 1
        versionName '1.0'
    }

Now the app works again on the phone. I should probably get a new mobile, but for now, I hope this may help someone.