无法解决版本冲突

Question

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:21.0.2'
    compile 'com.google.android.gms:play-services:6.1.71'
    compile 'com.google.firebase:firebase-database:10.0.1'
}

错误：（30,0）版本：6.1.71低于google-services插件所需的最低版本（9.0.0）。

Answer 1

just bump the version of play services to 10.0.1

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:21.0.2'
    compile 'com.google.android.gms:play-services:10.0.1'<---- change
    compile 'com.google.firebase:firebase-database:10.0.1'
}