Facebook SDK dependency conflict

Facebook SDK for Android is using support library version 25.3.1, so you need to exclude it to use the most recent support library. You can try using the following:

// Facebook SDK Dependencies, need to be excluded.// compile 'com.android.support:support-v4:25.3.1'// compile 'com.android.support:appcompat-v7:25.3.1'// compile 'com.android.support:cardview-v7:25.3.1'// compile 'com.android.support:customtabs:25.3.1'compile ('com.facebook.android:facebook-android-sdk:4.26.0') {     exclude group: 'com.android.support', module: 'support-v4'     exclude group: 'com.android.support', module: 'appcompat-v7'     exclude group: 'com.android.support', module: 'cardview-v7'     exclude group: 'com.android.support', module: 'customtabs'}

For facebook-android-sdk:4.28.0 the list is a bit longer ;)

implementation 'com.android.support:support-v4:26.1.0'implementation 'com.android.support:cardview-v7:26.1.0'implementation 'com.android.support:customtabs:26.1.0'implementation 'com.android.support:support-annotations:26.1.0'implementation 'com.android.support:support-core-utils:26.1.0'implementation('com.facebook.android:facebook-android-sdk:4.28.0') {    exclude group: 'com.android.support', module: 'support-v4'    exclude group: 'com.android.support', module: 'appcompat-v7'    exclude group: 'com.android.support', module: 'cardview-v7'    exclude group: 'com.android.support', module: 'customtabs'    exclude group: 'com.android.support', module: 'support-annotations'    exclude group: 'com.android.support', module: 'support-core-utils'}