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Android Layout learning-Layout (Layout) IThere are two ways to declare layout: 1. Declare the UI component in the xml file. 2. instantiate the layout element at runtime. We can create View or ViewGroup objects by encoding and manipulate their attributes. The following uses a small example to learn how to add layout in encoding: Copy code 1 import android. app. activity; 2 import android. graphics. color; 3 import android. OS. bundle; 4 import android.

. actiondialog. Access $001 (actiondialog. Java: 43)At com. XXXXXXXX. suquashi. actiondialog $2. onanimationend (actiondiashi. Java: 299)At Android. View. animation. animationset. gettransformation (animationset. Java: 329)At Android. View. viewgroup. drawchild (viewgroup. Java: 1494)At Android. View. viewgroup. dispatchdraw (

It is easy to dynamically generate interfaces.First, you need to configure the layout of this interface, including absolutelayout, relativelayout, and others. Then you can add the control in it:Public void oncreate (bundle savedinstancestate ){Super. oncreate (savedinstancestate );// Determine the page layoutAbsolutelayout abslayout = new absolutelayout (this );Setcontentview (abslayout );// Create a buttonButton btn1 = new button (this );Btn1.settext ("this is a button ");Btn1.setid (1 );// Det

= LayoutInflater. from (context); header = inflater. inflate (R. layout. header, null); measureView (header); headerHeight = header. getMeasuredHeight (); Log. I ("tag", "headerHeight =" + headerHeight); // topPadding (-headerHeight); // This line is commented out by me. If you remove the comment, this is displayed. addHeaderView (header);}/*** notification parent layout, occupied width and height; */private void measureView (View view) {ViewGroup. l

layout file to listview */private void initView (Context context) {LayoutInflater inflater = LayoutInflater. from (context); header = inflater. inflate (R. layout. header, null); measureView (header); headerHeight = header. getMeasuredHeight (); Log. I ("tag", "headerHeight =" + headerHeight); // topPadding (-headerHeight); // This line is commented out by me. If you remove the comment, this is displayed. addHeaderView (header);}/*** notification parent layout, occupied width and height; */priv

, he has no choice.For the word "distribution" itself is based on a certain number. For example, Xiao Ming's company through the development to expand to 10 people's scale, divided the department. There's a new business coming up this day.At this time, Xiaoming has a lot of options, he can choose to deal with this business, of course, you can also choose to distribute the business to the staff to deal with. This is what we call "distribution."This case is the same for Android, and if we can guar

Custom view has always been a hurdle for Android developers. The relationship between view and ViewGroup From view and ViewGroup relationship, ViewGroup inherits view. View subclasses, mostly functional controls, provide the style to draw, such as Imageview,textview, and ViewGroup subclasses, used to manage the size

superdispatchtouchevent (Motionevent event) {return Mdeco R.superdispatchtouchevent (event); This logic is very clear, Phonewindow will pass the event to Decorview, this decorview is what, please see the following private final class Decorview extends Framelayout Implements Rootviewsurfacetaker//This is the top-level view of the window, containing the window decor. Private Decorview Mdecor; @Override Public final View Getdecorview () {if (Mdecor = = null) {Installdecor (); return M

The true logic of Android apps App UI Component Hierarchy Most of the UI components in Android are stored in Android.widget packages and their children, android.view packages, and their child packages, all of which are inherited from The View class , The view class also has an important subclass of ViewGroup, so it has a view feature, but it is primarily used as a container for view, which sees the view as its own child and manages its child view. O

OnRefreshListener {private List A few lines of code can achieve such a nice drop-down view. Do you think this control is simple and easy to use. 5. drop-down conflicts between webview and swiperefreshLayout Because webview is special, if special processing is not performed, the scroll of the drop-down and webview will conflict. This solution is also very simple. Just rewrite the swiperefreshLayout OnTouchEventMethod. Code: Package com. spring. swiperefreshlayout. view; import android. content

android applications are stored in the android. widget package, its sub-packages, the android. view package, and its sub-packages. It is worth noting that all components in android inherit the View class. The View class is a very important class. It also has a subclass ViewGroup, but the ViewGoup class is often used as the container of other components. Another note is the relationship between the View and ViewGoup classes. The View class includes th