类分层结构
- java.lang.Object
- androidx.recyclerview.widget.RecyclerView.OnScrollListener
- android.view.View (implements android.view.accessibility.AccessibilityEventSource, android.graphics.drawable.Drawable.Callback, android.view.KeyEvent.Callback)
- android.widget.ProgressBar
- android.widget.AbsSeekBar
- android.widget.SeekBar
- androidx.appcompat.widget.AppCompatSeekBar
- android.view.ViewGroup (implements android.view.ViewManager, android.view.ViewParent)
- androidx.constraintlayout.widget.ConstraintLayout