Mobile Develop

1.web is b/s, Mobile is C/s2. Performance of the system:b/S advantage is the remote browsing and information collection more flexible, anytime, anywhere, as long as the browser can use the InternetBut the client can only complete the browsing, query,

Define a function to convert the DP to pixelspublic int dp2px (context context, float DP) {Final float scale = context.getresources (). Getdisplaymetrics (). density;return (int) (DP * scale + 0.5f);}Define a function to dynamically control the

First, we'll define a button space in the Activity_main.xml. 123456789101112131415

version, which is commonly said, is the identity that the app uses to advertise the user's description. Generally there are 2-segment or 3-segment, for example: 2.1,8.1.2Version is generally determined by the product department, completely different

1. The most straightforward method PerformSelector:withObject:afterDelay: The disadvantage of this approach: Write a method for the time delay 2. Use categories, execute with Bolck on @implementationNSObject (Performblockafterdelay) Geneva

Android to date version name Alpha (1.0) Beta (1.1) Cupcake (1.5) Donut (1.6) Eclair (2.0–2.1) Froyo (2.2–2.2.3) Gingerbread (2.3–2.3.7) Honeycomb (3.0–3.2.6) Ice Cream Sandwich (4.0–4.0.4) Jelly Bean (4.1

Beginners most want to tidy up the market more popular Android open-source framework, hope to get the time to have a look, have learned, love summary of the programmer is a promising good ape ....1.xUtils. Xutils contains a lot of useful

Today in the library modification is, need to modify the library Actionbar a button pop out of the background color of the drop-down box, in the online find a way to try, did not hit their own requirements, but quirks modified the more dropdown box

The first scenario, the original login registration update user data is a separate 3 interface, then it is easy to think of the registration is not updated information, but also logged in (the change of course need to log in). According to Murphy's

For more Java tutorials, please visit the Web , Android TutorialSome of the important attributes that Relativelayout uses:First Class: Property value is True or FalseAndroid:layout_centerhrizontal Horizontal CenterAndroid:layout_centervertical

iOS Extended Properties: Category You can extend the methods of a class, but you cannot expand the properties of a class. If you want to extend the properties of the class, you can use associative, which is relatively small compared to the category,

Late at night is also boring, look at the old code, found that we often use the Chrysanthemum ring, the original is a frame animation, a little meaning. Suddenly feel the frame animation do something good ah, at least it seems to listen to engaging.

People have always asked me, Android multi-screen adaptation in the end is how to do, I do not know how to explain clearly, perhaps I am also quite confused.The following conclusions are mainly based on the analysis of the official documents Https://

Some time ago need to do an SDK project, is depressed with what packaging method, if using jar packaging, jar can only package class file, want to package the resource file inThe more troublesome the opinion thing, the interface is not many words

Baseadapter can be the most flexible to implement the ListView, the inside of the control can also get focus, allow the Click. Examples are as follows: Main.xml XML version= "1.0" encoding= "Utf-8"?>LinearLayoutxmlns:android= "Http://schemas.android.

Reprint Please specify Source: http://blog.csdn.net/crazy1235/article/details/42614603Do about the location or positioning of the app can not avoid the use of map function, I recently because of the needs of the project needs to use some of the

Recently used https:// Github.com/skyfishjy/android-ripple-background Open source Control, when the android4.0.x encountered a problem, the original elegant animation has become very fast. just started to think it was a hardware acceleration

The Drawable object that we can define through XML when we define a drawable. It allows a picture to display different patterns in different states, such as a button, it has a pressed,focused, or other state, and by using the state list drawable,

1 Activity's toggle animation refers to the animation that jumps from one activity to another activity.It consists of two parts:Part of the animation when the first activity exits;Another part when the second activity enters the animation;After the 2

First, how did the problem arise? Evening review code, found that an activity did not call their own OnDestroy method I am very puzzled, so I checked the code. After the discovery of the finish code followed by the following code finish ();