android - Sync Gradle always stops with error -

for backward compatibility problem, need com.google.android:support-v4:r13, sync gradle comes error:

error:could not find com.google.android:support-v4:r13. required by:ga:app:unspecified ga:app:unspecified > com.fizz-buzz:fb-android-dagger:1.0.3 

i have in dependencies:

dependencies { compile files('libs/support-v4-r13.jar') compile 'com.google.android:support-v4:r13' 

and have libs folder

i did 'add library' on it, cleaned project, nothing works. doing wrong?

maybe gives additional indication. when rebuild, this:

your dependencies:

dependencies {      compile files('libs/support-v4-r13.jar')  // <-- try not use jars     compile 'com.google.android:support-v4:r13' // <-- not exist } 

the library not exist(see versions , dates): http://mvnrepository.com/artifact/com.google.android/support-v4

should be:

dependencies {     com.android.support:support-v4:22.0.1 // <-- gradle dependency } 

always refer docs: http://developer.android.com/tools/support-library/features.html#v4