类分层结构
- java.lang.Object
- android.view.View (implements android.view.accessibility.AccessibilityEventSource, android.graphics.drawable.Drawable.Callback, android.view.KeyEvent.Callback)
- android.view.ViewGroup (implements android.view.ViewManager, android.view.ViewParent)
- android.widget.AdapterView<T>
- android.widget.AbsListView (implements android.widget.Filter.FilterListener, android.text.TextWatcher, android.view.ViewTreeObserver.OnGlobalLayoutListener, android.view.ViewTreeObserver.OnTouchModeChangeListener)
- android.widget.LinearLayout
- android.widget.RelativeLayout
接口分层结构