Error inflating class com.facebook.widget.LoginButton with Facebook SDK 4.0.1
Caused by: The SDK has not been initialized, make sure to call FacebookSdk.sdkInitialize() first.
Make sure you initialized facebook SDK before setContentView.
FacebookSdk.sdkInitialize(getApplicationContext());setContentView(R.layout.activity_main);
In facebook sdk 4.0.1, LoginButton class is not inside com.facebook.widget package. It is inside com.facebook.login.widget package. So your xml declaration should look like this:
<com.facebook.login.widget.LoginButton android:id="@+id/connectWithFbButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:layout_gravity="center_horizontal" android:text=" connect_with_facebook" />
Only add this methods of your app's Application class::
FacebookSdk.sdkInitialize(getApplicationContext());AppEventsLogger.activateApp(this);Befeore: setContentView in onCreate Activity.
In dependencies import:
compile 'com.facebook.android:facebook-android-sdk:[4,5)' or smallerEnjoy :)