Mobile Develop

After Android3.0 ,Google has made a series of changes to the UI navigation design, and one of the most useful new features is the introduction of ActionBar , used to replace 3.0 the previous title bar, and provides a richer navigation effect.

A brief introduction to the 1.MATMAT(Memory Analyzer Tool) 是基于heap dumps来进行内存分析的工具，一个基于Eclipse的内存分析工具，是一个快速、功能丰富的JAVA heap分析工具，它可以帮助我们查找内存泄漏和减少内存消耗。2. Download and install http://www.eclipse.org/mat/downloads.php The address

This series is the "first line of Android Code" Learning notes, if there are errors and omissions, please correct me!Every app in Android can register a broadcast of interest, so the program will only receive the broadcast content that it cares

One, the non-processed animations are like this, and the custom navigation buttons are then turned together.Second, the effect I wantThird, the idea of achieving this effect: the core animation to be added to the view layer above, the beginning of

Google has been releasing Android studio for some time now, and it's been a while since the release of version 2.0, and it's been released with the first version of Eclipse for a variety of reasons and there's no first time to install it. And since

Public classDeviceinfoutil {Private StaticWifimanager Wifimanager =NULL; //whether WiFi is connected Public Static BooleanIswifi (Context context) {Wifimanager=(Wifimanager) Context.getsystemservice (Context.wifi_service); Try{wifiinfo

First, Method 1:, the figure of the two tableview to two controllers to manage Key difficulties: Categorytableview was clicked, Subcategorytableview to get the corresponding data to refresh, so subcategorytableview to become Categorytableview

Knowledge points1. Grid view2. Reading filesMainacitvity

@Override         public   boolean  onkeydown ( int  keycode, keyevent event)          {                     if ( Keycode == keyevent.keycode_back && event.getaction ()  == KeyEvent.ACTION _down)    {                   

1. Method definitionCall Method:Syntax: Call ([thisobj[,arg1[, arg2[, [,. ArgN]]])Definition: Invokes one method of an object, replacing the current object with another object.DescriptionThe call method can be used to invoke a method in place of

Knowledge summary of the IOS navigation controllerAfter adding the navigation controller:1. Each page will have a top navigation bar Navigationbar and the bottom toolbar toolbar, which are the properties of the navigation controller NAVC. and the

When touching the screen,- -First call the dispatchtouchevent function in Activity , distribute the event, and find the first child control where the click is located Viewgroup1,--then pass the event aViewgroup1of thedispatchtoucheventfunction, and

A What is a transactionA transaction is a rigorous set of operations in an application, and all operations must be completed successfully, or all changes made in each operation will be undone. That is, transactions are atomic, and a series of

Asynchronous tasks are provided in order to modify the UI component in a new thread , but we can also use Handler to implement communication between threads in order to solve this problem. But asynchronous tasks provide us with a way to further

/***************************************************************************** * I.MX6 Android Net Perf * Description: * Before the transplant IPERF3 Network test tool did not succeed, would like to transplant a iperf2 to try, but * in the

CheckBoxTwo states: Checked (true) and unchecked (false)Property:Android:id= "@+id/checkbox"Android:checked= "False" whether the selected stateandroid:text= "Female"New:Specific implementation:Private CheckBox CB;Initialize the checkboxcb= (checkbox)

first, the creation of Uiscrollview and Common Properties1. Uiscrollview Overview Uiscrollview is a subclass of UIView. Uiscrollview as the base class for all scrolling views. Uiscrollview is mainly used in common functions such

First, Uinavigationcontroller1, Uinavigationcontroller: Navigation controller, is one of the most commonly used multi-view controller in iOS, it is used to manage multiple view controllers. can be referred to as the controller of the management

Use of include tags in androidTransferred from: http://blog.sina.com.cn/s/blog_a364999b01017gxi.htmlThe include tag in Android is a good solution to facilitate the overlay of controls.But there are some areas to be aware of, the following is the

I have not encountered the need to manually throw an exception, this time, see, Record. The sample code is as Follows:/**/- (instancetype) init {@throw [nsexception exceptionwithname: @ "Singleton" reason:@ "use+