Android

Android UI operations are thread-unsafe. To perform UI operations in child thread red, you need to use the Handler provided by Android. The AsyncTask provided by Android is actually an encapsulation of Handler, so that we can update the UI element

Class CC_DLL AutoreleasePool {public: // create an object pool for storing ref and put it into the PoolManager Object pool manager AutoreleasePool (); // create an object pool for storing ref, put it in the PoolManager Object pool manager, and take

  There are only three simple steps. The official website is very concise, comprehensive, and admired.【 Preparation] 1. Eclipse (Indigo) 2. ADT:This is nothing more than adding an android installation source to eclipse. If NDK Plugin is selected

In our common systems, the program usually works in two ways: event-driven and message-driven. In Android systems, Java applications work by message-driven. The message-driven principle is:1. There is a message queue that can deliver messages to

Public class MainActivity extends Activity {private ImageView operImage; private PointF point = new PointF (); // record the position of the finger private PointF midPoint = new PointF (); // record the position of the midpoint between fingers

In actual development, the Activity needs to be started, but the interface cannot be displayed. In this case, it needs to be started in the background, but it is not finish (). In this case, the moveTaskToBack function in the Activity should be used

Two improvements1. Some transaction parameters are made persistent, that is, (rate, other fees, etc.) and are automatically saved. You do not need to enter them again when you start the program next time.Android standalone data persistence is

MainActivity is as follows: Package cc. y; import android. app. activity; import android. content. context; import android. graphics. bitmap; import android. graphics. bitmap. config; import android. OS. bundle; import android. util. lruCache;

About the development framework, according to the information retrieved on the internet, I feel that the ios game development framework of cocos2d-x is very good, and there is a strong portability, so I plan to try it. As of this article, the

Because it is engaged in. NET, and now I am studying Android, I want to implement Android to obtain data through the WebService interface. There are still some problems on the Internet. Refer to: Android uses WebService for network programming and

Basic Structure of XHTML Mobile Profile Http://www.wapforum.org/DTD/xhtml-mobile10.dtd> Chinese title Text ---------------------------------------------------Define style sheet CSS The XHTML mobile specification [XHTMLMP] specifies that an external

1 Boot Image: Android-logo-mask.png Android-logo-shine.png The two pictures are the same as the previous

Recently, many people have asked me how individual App developers design the UI. In fact, this is the biggest headache for individual developers. people engaged in technology really cannot achieve all-around performance. It is impossible to spend a

Recently, I made a project similar to the QQ space to achieve the photo browsing function. I clicked images in the QQ space to zoom in to the full screen, and the effect was very good, so I made a similar effect. As follows. Signature + signature/qx

I. symptom: The method for downloading files through Android webview is generally 1. override the ondownloadloadstart method of DownloadListener. In the onDownloadStart method dialog box that appears, a new file needs to be downloaded. after

Loading images in ListView is very common. image loading must meet the following requirements: (1) Whether the image is on the network or local, the loading should not be synchronous, but should be asynchronously loaded, such as AsyncTask. (2) cache

We often use the Integer. valueOf (String str) method. If the String format is incorrect, this method will throw a system exception NumberFormatException.Here we need to analyze this method. Here, Byte and Short also call the method in Ingeter.The

Android custom buttons enable long-pressing Use a Custom BUTTON to write a LongTouchBtn class and execute the onTouchEvent event when you press it. This event uses the callback function to implement the long press function! XML:

This method is often used to call an API. NSString* urlString = [NSString stringWithFormat:@"http://api.douban.com/v2/movie/search?q=%@", content]; NSURL *url = [NSURL URLWithString:urlString]; testRequest = [ASIHTTPRequest

After reading and translating the Android design guidance, compare the Android 4.0, 4.1, 4.4, and Android and earlier app design guidance, I have summarized the 10 major changes to the design specifications after Android 4.0. I would also like to