Android_ui之View与ViewGroup
来源:互联网 发布:三国志 三国演义 知乎 编辑:程序博客网 时间:2024/05/29 16:58
在Android APP中,所有的用户界面元素都是由View和ViewGroup的对象构成的。View是绘制在屏幕上的用户能与之交互的一个对象。而ViewGroup则是一个用于存放其他View(和ViewGroup)对象的布局容器。、
下面是Android文档提供的关于View的介绍:
public class
View
extends Object
implements Drawable.Callback KeyEvent.Callback AccessibilityEventSource
java.lang.Object ↳android.view.ViewKnown Direct SubclassesKnown Indirect Subclasses
AnalogClock, ImageView, KeyboardView, MediaRouteButton, ProgressBar, Space, SurfaceView, TextView, TextureView, ViewGroup, ViewStub
AbsListView, AbsSeekBar, AbsSpinner, AbsoluteLayout, AdapterView<T extends Adapter>, AdapterViewAnimator, AdapterViewFlipper, and 56 others.
下面是Android文档提供的关于ViewGroup的介绍:
public abstract class
ViewGroup
extends View
implements ViewManager ViewParent
implements ViewManager ViewParent
java.lang.Object ↳android.view.View ↳android.view.ViewGroupKnown Direct SubclassesKnown Indirect Subclasses
AbsoluteLayout, AdapterView<T extends Adapter>, DrawerLayout, FragmentBreadCrumbs, FrameLayout, GridLayout, LinearLayout, PagerTitleStrip, RelativeLayout,SlidingDrawer, SlidingPaneLayout, ViewPager
AbsListView, AbsSpinner, AdapterViewAnimator, AdapterViewFlipper, AppWidgetHostView, CalendarView, DatePicker, DialerFilter, ExpandableListView, and 21 others.
知道这些就行了,剩下的看文档就OK了。
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