Error:Execution failed for task ':app:processDebugManifest'.
> Manifest merger failed : Attribute meta-data#android.support.VERSION@value value=(25.3.1) from [com.android.support:appcompat-v7:25.3.1] AndroidManifest.xml:27:9-31
is also present at [com.android.support:recyclerview-v7:26.0.0-alpha1] AndroidManifest.xml:24:9-38 value=(26.0.0-alpha1).
Suggestion: add 'tools:replace="android:value"' to element at AndroidManifest.xml:25:5-27:34 to override.

在引入reclyview的时候报错,把最新版的reclyview改成和编译sdk版本一样的,就行了