IOS

This article explains the iOS from the background Image color code, shared for everyone to refer to, the specific contents are as follows Implementation code: void *bitmapdata; A pointer to the memory space equal to the number of bytes used

Description of the situation: Background to a TXT file, encoding is Utf-8, in the MAC computer Xcode development environment to read TXT file content, Chinese characters will appear garbled, English no garbled this situation. Second, try to solve

Through corelocation positioning, get to the user's current position, with the map of different positioning. First, import Corelocation.framework Second, #import Third, the declaration agent Four, code implementation 1. Statement

The effect chart is as follows Implementation process 1. First introduce fingerprint to unlock the necessary header file #import 2. Understand the main two methodsThis method is to determine whether the device supports TouchID.

First look at the effect: Now it's time to show the real technology: First add a scrollviewto the controller, then add the imageview(Cube View group) to the corresponding position on the ScrollView , and of course, you can put the other sub

Objective Three ways to copy OC objects The object copy of OC has the following three ways, many times we confuse deep copy with full copy, other they are different, specifically as follows Shallow copy: in a shallow copy operation, a pointer

Objective At first also thought that the code wrote a problem, click on the event there are more time-consuming card main thread code, one by one of the deletion code found not so. Body Not exactly the same as in the reference article, UIButton

The command mode encapsulates a request or behavior as an object. Packaged requests are more flexible than the original, and can be passed, stored, dynamically modified, or placed in a queue between objects. So let's briefly describe the

I use DrawRect to stretch the view (which is described here??), and the effect chart also implements a micro-letter view effect that you can take a look at. Create a view that inherits from UIView. h file Backgoundview @property

Memo mode. As the name suggests, the memo pattern is designed to return to the previous state. From the name looks at a glance, OK, or the same as the old, first given the definition. Memo (Memento): captures the internal state of an object without

Foreword: Now is not as before the only one size, now the least iphone development needs to fit at least three dimensions. So before we can use hard coordinates to set the position of each control, but now the words are no longer, we need to do a

Picture clipping, which is often used in picture processing, is the area where the picture is cropped by the trim box, then cut off the area of the picture, today to achieve a bit, in fact, the picture clipping itself is not difficult, the main trim

Appdelegate Object method Copy Code code as follows: # The program does not execute until the first time it is started -(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *)

This demo for practicing small project, is mainly familiar with the current mainstream app architecture model. This project uses the MVC design pattern, pure code, and a little xib. Mainly realizes the friend circle function and shakes the function.

It's written in front. In iOS development, whether in UITableView or Uicollectionview, it is a more common requirement to get pictures from the network and set them to the cell. Although there are a lot of existing third-party libraries can be

The example of this article distinguishes NSBundle and Nsurl, and realizes the following contents In the project to add a file, this routine is added to the Aa.txt, the contents of the file for Baidu: Www.baidu.com, now to use NSBundle and Nsurl

Pagination control is a visible indicator to replace the navigation bar, easy to direct the page, the most typical application is the iphone's main screen, when the number of icons will automatically increase the page, at the bottom of the screen

Basic Usage Example -(void) viewdidload {[Super viewdidload]; Do no additional setup after loading the view. UIWebView * WebView = [[UIWebView alloc]initwithframe:cgrectmake (0, ScreenWidth, ScreenHeight-20)]; The automatic team page

Uiimagepickercontroller is used to manage customizable, system-supported user interfaces for capturing pictures and videos on devices. It can also be used to select stored pictures and videos in the app. A Uiimagepickercontroller manages user

I. The role of a single caseas the name suggests, a single example, that is, the object of this class can only be initialized once in the entire project. Its characteristics can be widely used in some resources that need to be shared globally, such