Mobile Develop

General IdeasAfter the General app is launched, there is an initialization process. In addition to subsequent app upgrades, data migration also needs to be considered. So the framework of initialization and data migration should be considered in the

In Android, the basic way to use network resources is as follows (synchronous)Try{URL URL=NewURL (myfeed); //Create A new HTTP URL connectionURLConnection connection =url.openconnection (); HttpURLConnection httpconnection=(httpurlconnection)

The previous article introduced the animation animation one: Tween tween animation.This article next introduces animation another form of animation: frame-by-frames animation.Frame animation is a series of pictures in a certain order to show the

 1. Add Corelocation.framework to the project2. Enter the following in the. h file:1. #import 2. #import 3. #import 4. #import 3. Enter the following in the. m file:1.//BeiJing2. #define Bj_latitude 40.063813. #define Bj_longitude 116.1346574.

The life cycle of fragmentsClick to download the source code Like activities, fragments have their own life cycle. After understanding the life cycle of the fragment, we can correctly save the example when the fragment is destroyed and

In the process of interacting with Android, because Android is read from low to High, iOS is read from high to low, so the interactive data needs to be converted./* * Convert big endian to little endian in C */uint16_t swap_uint16 (uint16_t val);

1. Display Textticker and only icon two cases: when the parameter Showticker is true, the display does not appear In this sample, we'll use the same text for the ticker and the expanded notification charsequence text = GetText (te Xtid)

A lot of people have been asking me recently how to design the UI for a personal app developer.In fact, this is the most headache for the individual developers, technology people, really can not do everything, it is impossible to spend a lot of time

Ideas on how to improve your phone contacts　　Red-headed Confucian scholars2014-5-12　Keywords: mobile contactsIntroduction: Put forward some suggestions for the improvement of mobile phone contact person.　　Contacts are needed for mobile phones. I use

Basic drawing includes: Code draw line, picture text picture crop redraw simple animationThe system automatically calls the DrawRect method when you customize the viewDraw Line-(void) DrawRect: (cgrect) rect{ //Drawing code //1. Get the

Before iOS 6, Apple used Google Maps, iOS 6, and Apple used its own map (as if it was a high-level map in the country), but the API programming interface didn't change much compared to iOS 5.The IOS app uses the map Kit API to develop a mapping

Origin: General wording See "write an apk", each time you click on the button, the button first find the text box and other elements, and then operation, in fact, the search operation is very time-consuming operation, so the definition is placed in

First, Analog mobile devicesThe requirements are in the Google version above 32.、Second, equipment testingIf there are two versions of Sina, one is the PC version, which is stored on the www.sina.com.cn server, and the other is the mobile version,

Basic concepts of a classThis is an observer (Observer) that registers the listener view tree and is notified when the global event of the view tree is changed. This global event not only includes the entire tree layout, starting with the painting

When I first started writing Android, I found that the output was null (NULL pointer error) after using the Findviewbyid method, which means the method was unsuccessful. Online says this is in Activity_main. xml to find the control represented by

/** Draw traversal performs several drawing steps which must be executed* In the appropriate order:** 1. Draw the background* 2. If necessary, save the canvas ' layers to prepare for fading* 3. Draw View ' s content* 4. Draw Children* 5. If

During iOS development, we typically use the view controller provided by Apple, such as Uinavigationcontroller,uitabbarcontroller, to switch our views. Before iOS5, if you want to customize the container view controller is cumbersome, such as you

Activity jumps and passes the value, mainly through the intent class, the intent function is activates the component and the companion data.First, activity jumpsMethod OneIntent Intent = new Intent (a.this, B.class);StartActivity (Intent)Method

First, create an Android project (my version is 4.4.2) with the name "SMS Transmitter"Then find the Layout folder under the Res folder, find Activity_main.xml or fragment_main.xml, enter or drag the button Finally, in the Java file under src

A friend admitted to the flight attendant. She said: I will not be back in the future. Please call me Bai fumei at the next meeting! Although a little envious, I still do not want to show weakness and reply: Please call me Gao fushuai next time!Who