android ui components list

EditText is the most important Android UI component that accepts user input information and can take advantage of edittext.gettext () to get its text content.Example: EdittextdemoOperating effect:Code Listing:Layout file: Main.xmlJava source code file: Mainactivity.javaPackage Com.rainsong.edittextdemo;import Android.app.activity;import Android.os.bundle;import Android.view.View; Import Android.view.view.on

: XML version= "1.0" encoding= "Utf-8"?>Resources> stringname= "App_name">My Second Appstring> stringname= "Hello_world">Hello world!string> stringname= "Action_settings">Settingsstring> stringname= "Str_hello">Hello, Android!string> stringname= "Calc_title">Calculatorstring> stringname= "Zero">0string> stringname= "One">1string> stringname= "both">2string> stringname= "three">3string> stringname= "Four">4string> strin

layoutresid)Set the activity content from a layout resource.TextViewPublic classTextViewextends Viewimplements Viewtreeobserver.onpredrawlistenerknown Direct subclassesButton, Checkedtextview, chronometer, DigitalClock, EditText, Textclockknown Indirect subclassesAutocompletetextview, CheckBox, Compoundbutton, Extractedittext, Multiautocompletetextview, RadioButton, Switch, ToggleButtonClass Overviewdisplays text to the user and optionally allows them to edit it. A TextView is a complete text e

); Super.handlemessage (msg); } }3. Modify the text of the main thread through Message Queuing: classMyHandler extends handler{@Override Public voidhandlemessage (Message msg) {System. out. println ("This is a message from MyHandler:"+Thread.CurrentThread (). GetName ()); String s=(String) msg.obj; Textview.settext (s); Super.handlemessage (msg); }} classButtonlistener implements view.onclicklistener{@Override Public voidOnClick (view view) {thread thread=NewNetworkthread

Autocompletetextview Auto-complete input box implementation input prompt list for selectionGridView Grid ListExpandablelistview Collapsible List ComponentSpinner drop-down list selection boxGallery Gallery A picture set for sliding operationsAdapterviewflipper Implement picture CarouselStackView Stacked ViewProgressBar progress barSeekBar Drag BarRatingbar Star r

layout file: Main.xml XML version= "1.0" encoding="Utf-8"?> linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Here is TextView, you can display some textual information here. " /> linearlayout>

This series of articles will start the android lancher source code analysis. The example is the launcher3 source code that comes with Android 2.3. It is a http://download.csdn.net/detail/xianming01/4383598 In the previous article "android launcher source code parsing 01: Ui layout details 1", we introduced the theme

list data adapterSpinneradapter Mspinneradapter = Arrayadapter.createfromresource ( This, R.array.action_list, Android. R.layout.simple_spinner_dropdown_item); Actionbar.setlistnavigationcallbacks (Mspinneradapter,NewActionbar.onnavigationlistener () {@Override Public BooleanOnnavigationitemselected (intItemposition,LongitemId) { return true;

Effect of Android UI view-imitation QQ friends list group floating PinnedHeaderExpandableListView I tested it on a tablet. The picture is a little big. You can check the effect. Next, paste the source code: PinnedHeaderExpandableListView. java Note that in the onGroupClick method, the function of the Code parent. setSelectedGroup (groupPosition) is to click

AndroidSDK cannot be found during Unity compilation | Unable to list target platforms (reprinted), unityengine. ui cannot be foundOriginal article: http://www.jianshu.com/p/fe4c334ee9fesymptom When compiling Android applications with Unity, you may encounter the problem of Unable to list target platforms. Error Message

) {returnGroupdata[groupposition]; }@Override Public int GetGroupCount() {returnGroupdata.length; }@Override Public Long Getgroupid(intGroupposition) {return 0; }@Override PublicViewGetgroupview(intGroupposition,Booleanisexpanded, view Convertview, ViewGroup parent) {View view =NULL;//menu if(groupposition==0) {view = Inflater.inflate (R.layout.menu,NULL); View.setlayoutparams (NewLayoutparams (ViewGroup.LayoutParams.MATCH_PARENT, the)); View.settag (1); TextView bt

topcenterimageview. I believe we will be more puzzled, let us see what he is:Package Com.example.scrolltest;import Android.content.context;import Android.graphics.matrix;import Android.util.attributeset;import android.widget.imageview;/** * Custom view allowing an image to being displayed with a "top Crop "Scale type * * @author Nicolas Pomepuy * */public class Topcenterimageview extends ImageView {public Topcenterimag Eview (context context, AttributeSet attrs, int defstyle) {Super (context, a

(groupposition);} else {return 0;}}}Mainactivity.java main activityPackage Com.xiaos.pinnedheaderexpandable;import Android.app.activity;import Android.os.bundle;import Android.view.view;import Android.widget.expandablelistview;import Android.widget.expandablelistview.ongroupclicklistener;import Com.xiaos.adapter.PinnedHeaderExpandableAdapter; Import Com.xiaos.view.pinnedheaderexpandablelistview;public class Mainactivity extends Activity{private Pinnedheaderexpandablelistview explistview;private

"Android threading Mechanism"For performance reasons,Android UI operations are not thread-safe, which means that if there are multiple threads concurrently manipulating the UI component, it can cause thread safety issues. To solve this problem , Android has a simple rule : o

AdapterView of UI components and its sub-class (3) details of the Spinner Control The Spinner allows you to quickly select a value from a dataset. By default, the Spinner displays the selected value,Click the Spinner to bring up a dropdown menu or a dialog box containing all optional values. From this menu, you can select a new value for the Spinner. I will discuss in this article 1. Basic usage of Spinner

Reprint please indicate this article from Jflex blog http://blog.csdn.net/jflex/article/details/46476599, please respect others ' hard work results, thank you!Native to Android UI-(1), Introduction to Android UI and common properties and phenomena Introduction: Android

One post learns to develop four main components for Android and four major components for android From: http://www.cnblogs.com/pepcod/archive/2013/02/11/2937403.html This article focuses on four major components of Android develop

[Android Notes] use and implementation of the pull-down and refresh components and Android notes drop-down ComponentsIf you need to implement pull-down refresh in a project, you can choose from the following options:1. Use the open-source library Android-pullToRefresh.2. Use SwipeRefreshLayout provided by the support.

Four major components of Android development: Service (detailed description) and four major components of android Four components of Android development-Service I. Service Introduction A Service is one of the four main

Article Introduction: a popular front-end development framework that supports responsive design. A few years ago, there was no real sense of front-end development. With the development of network technology, Web sites and Web applications become more and more complex, the front-end part of the work of the independent gradually become the front-end development. Today, we can see a growing number of companies recruiting front-end development positions. Front-End development is not easy