HELP :(
I'm using android studio.. Want to add a cardview in my app So I go dependencies to add it but i got 2 red line which is 'com.android.support.constraint:constraint-layout:1.0.2' and 'com.android.support:cardview-v7:28.0.0-alpha1' I used the Project Structure still I got the same error.. Please Help me :( dependencies { implementation fileTree(include: ['*.jar'], dir: 'libs') implementation 'com.android.support:appcompat-v7:26.0.0-beta1' implementation 'com.android.support.constraint:constraint-layout:1.0.2' implementation 'com.android.support:cardview-v7:28.0.0-alpha1' testImplementation 'junit:junit:4.12' androidTestImplementation 'com.android.support.test:runner:1.0.1' androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1' }