import android.content.res.TypedArray;
import android.database.DataSetObserver;
import android.graphics.Canvas;
-import androidx.core.view.MotionEventCompat;
-import androidx.core.view.VelocityTrackerCompat;
-import androidx.core.view.ViewCompat;
-import androidx.core.widget.EdgeEffectCompat;
+import android.support.v4.view.MotionEventCompat;
+import android.support.v4.view.VelocityTrackerCompat;
+import android.support.v4.view.ViewCompat;
+import android.support.v4.widget.EdgeEffectCompat;
import android.util.AttributeSet;
import android.util.Log;
import android.util.SparseArray;