android viewgroup

OverviewThe event distribution mechanism in Android is the distribution and processing of events between view and ViewGroup. The interior of ViewGroup contains many view, and ViewGroup inherits from view, so ViewGroup itself is also a view. The event can be

Android custom control Series 6: Custom ViewGroup (1) ViewPager effect, viewgroupviewpager Today, we start a new Android custom component journey. The following content describes how to customize a ViewGoup. We have learned about the basic syntax of custom view through several blog posts, if you have any questions, refer to the following topic:

1. viewgroup Overview Before studying viewgroup, let's take a look at the introduction of viewgroup: /*** A viewgroup is a special view that can contain in other views* (Called children.) The view group is the base class for layouts and views* Containers. This class also defines*

http://blog.csdn.net/guolin_blog/article/details/9153747http://blog.csdn.net/lmj623565791/article/details/39102591The last article on the view of the event distribution, this article is mainly ViewGroupFirst, let's explore, what is ViewGroup? What is the difference between it and a normal view?As the name implies, ViewGroup is a set of view that contains a lot of sub-view and sub-vewgroup, which is the pare

Android Basics Getting Started Tutorial--2.1 view vs. ViewGroup concepttags (space delimited): Android Basics Getting Started TutorialIntroduction to this section:Farewell to the first chapter, usher in the second chapter--android UI (User Interface) component of the detailed,And what we're going to learn in this secti

IntroducedPrevious blog responsibility chain/Responsibility chain model (Chain of Responsibility) analytical understanding and application in AndroidThis paper introduces the responsibility chain model as the basis of understanding the view event distribution mechanism.To apply the structural analysis of the responsibility chain pattern, when our fingers are clicked or slid on the screen, it is an event, each view or viewgroup that is displayed on the

Last article Custom ViewGroup (3) Address: http://www.jb51.net/article/100618.htm Code: Package com.example.libingyuan.horizontallistview.ScrollViewGroup; Import Android.content.Context; Import Android.util.AttributeSet; Import Android.util.DisplayMetrics; Import android.view.MotionEvent; Import Android.view.VelocityTracker; Import Android.view.View; Import android.view.ViewConfiguration; Import Android.view.ViewGroup; Import Android.view.Wind

Last article Custom ViewGroup (1) Address: http://www.jb51.net/article/100608.htm Here the Direct code: Package com.example.libingyuan.horizontallistview.ScrollViewGroup; Import Android.content.Context; Import Android.util.AttributeSet; Import android.view.MotionEvent; Import Android.view.View; Import Android.view.ViewGroup; Import Android.widget.Scroller; /** * Custom ViewGroup * On the basis of hor

Basic tutorial for Android-2.1 concepts of View and ViewGroup, androidviewgroupBasic tutorial for Android-2.1 concepts of View and ViewGroup Tags (separated by spaces): basic Android tutorialThis section introduces: Let's say goodbye to Chapter 1 and welcome to Chapter 2-det

minimum view of its inner layer), and then processed (from the smallest view cell (event source) to the outer layers. ) is implemented in the form of a.Complexity is manifested in the ability to control whether each layer of events continues to be delivered (distributed and intercepted cooperatively), as well as the specific consumption of events (event distribution also has event spending power). Three important functions involved in 2.android

Android custom ViewGroup and androidviewgroup There are two types of views: View and ViewGroup. ViewGroup is a subclass of View. ViewGroup can contain all views (including ViewGroup). View can only be self-described and cannot con

Android -- View, ViewGroup event (Touch event) processing mechanism Summary, androidviewgroupEvents in Android Touch event, four statuses: ACTION_DOWN --> indicates that an event starts from ACTION_DOWN when the screen is pressed.ACTION_MOVE --> indicates a mobile gesture.ACTION_UP --> indicates leaving the screenACTION_CANCEL --> indicates canceling a gesture,

scrolling!Misscrolling =true;return true; } Break; } ... }//In general, we don ' t want to intercept touch events. They should be //Handled by the child view. return false; }@Override Public Boolean ontouchevent(Motionevent ev) {//Here we actually handle the touch event (e.g. if the action is Action_move, //scroll this container). //This method is only being called if the touch event is intercepted in //Onintercepttouchevent... }}Note