IOS

Runtime reflection attribute list: Describe the usage of reflection attributes... There should be no stranger to IOS network requests, but sometimes we need to transmit a lot of data to the server. This is also the time for us to use

Recently I used it in the program. In the pop-up box at the bottom, I read the code written by my predecessors and searched the internet. I found that I did not solve the problem very well. So I studied it, share the code and share it with you. If

First, create a viewController: Add the MapKit and CoreLocation framework 1. Add a map 1. initialize the map view: @property (nonatomic, strong) MKMapView *mapView;　 self.mapView =[[MKMapView alloc]initWithFrame:self.view.bounds];   2. Set three Map

1. Define the C function: Void dynamicMethodIMP (idself, SEL _ cmd) { NSLog (@ "snail bait is crazy "); } 2. Rewrite Function + (BOOL) resolveInstanceMethod :( SEL) sel + (BOOL) resolveInstanceMethod :( SEL) sel { Class_addMethod

Server Configuration The key configurations of nginx are as follows: listen 443;server_name localhost;ssl on;ssl_certificate /usr/local/opt/nginx/certificates/server.cer;ssl_certificate_key

During iOS development, we usually use UINavigationController, UITabbarController, and other view controllers provided by Apple to switch our views. Before iOS5, it is difficult to customize the container View Controller. For example, you need to

  Sometimes the application crashes, and the output information in the log is too small to locate the problem. This is the biggest headache, especially when I am very tired, I cannot remember what I just changed, this is called endurance. To do a

The last time I released a Taobao HD application, I released it on the first day and went online on the second day. I was still wondering if it was Apple's optimized solution, which led to a faster review speed. The new version has been released in

22. Fixed the messagesent to deallocated instance 0x52cc690 error. This error occurs when you try to assign values to an object, for example: TfContent. text = bodyText; In this case, you can enable the NSZombieEnable option, and the console will

Tag View Controller-comprehensive use of UITabBarController custom UITabBarItem custom navigation bar and tag Bar background imageI. The tag View Controller UITabBarControllerUITabBarController has the following important attributes: View Controller

The SBJson package is in the previous article. You can use the key-value pairs in NSDictionary to splice Json data, which is very convenient and can also be nested and directly run the Code: // Start splicing the Json string NSDictionary *

When map-related items are used in the project, the previous demo is moved out. It is found that there is no problem with running the previous demo directly. After you create a project under xcode5 and paste the code, a prompt will be

Sort 24 documents related to iOS OpenGLES framework Beautiful Life of the sun and fire god (http://blog.csdn.net/opengl_es) This article follows the "signature-non-commercial use-consistency" creation public agreement Reprinted please keep this

IOS Foundation framework base class Beautiful Life of the sun and fire god (http://blog.csdn.net/opengl_es) This article follows the "signature-non-commercial use-consistency" creation public agreement Reprinted please keep this sentence: Sun

The format is a bit messy. It won't be enough for a few times. This article is a memorable question I encountered when I first came into contact with the launch project. If you are a great God, Please bypass it. This is just a superficial knowledge

+ (UIImage *) createImageFromView :( UIView *) view { // Obtain scale CGFloat scale = [UIScreen mainScreen]. scale; Start plotting. In the following method, the first parameter indicates the area size. The second parameter indicates whether it

 I. DescriptionCommunication between the two classes makes it easier to use protocols.1. The Protocol declares methods that can be implemented by any class.2. The protocol is not a class. It defines an interface that can be implemented by other

Recently, this problem occurs when the strings returned from the server are compressed. The solution is as follows: //// ViewController. m // extract the string /// Created by du jia on 14-5-8. // Copyright (c) June 2014 dujia. all rights reserved.

-(UIColor *) colorAtPixel :( CGPoint) point { // Cancel if point is outside image coordinates If (! CGRectContainsPoint (CGRectMake (0.0f, 0.0f, self. size. width, self. size. height), point )){ Return nil; } NSInteger pointX = trunc (point. x

Create a new string and set it to the content of the file specified by path. Use the character encoding enc to return an error on error. + (Id) stringWithContentsOfURL :( NSURL *) url encoding :( NSStringEncoding) enc error :( NSError **) error;