how to update ios on iphone 4

I don't know when to start. Since I was using the IOS system, I had an update prompt, such as istore or cydia. I couldn't help but update it. Is it a strange thing... However, some software or games are reluctant to be updated, but there are prompts that they are very tangled.Now I have summarized how to hide cydia. Let's learn from some of my child shoes ~ Step

In the development process, we not only have to look at other people's code, but also let others see our code. Then, having a good coding habit will be very important. The following is a list of coding recommendations for developing iOS using OBJECTIVE-C."1"The length of any function must not exceed 50 lines. (In fact, it's easy to get over 50 lines, so consider code extraction.) ）"2"Any line code cannot exceed 80 characters. (It is also easy to more

1. Set Navigationbar background color difference,Reason: If the simple setting of the background color also has the effect of Gaussian blur, the solid color Gaussian blur after the equivalent of a solid color 70% (guess) transparent processing, but anyway is the color differenceWorkaround One:Self.navigationController.navigationBar.translucent = no;//Bar blur effect, default is YesMethod Two:Through the picture method[Self.navigationController.navigationBar setbackgroundimage:[uiimage imagenamed

When using CocoaPods for iOS development to update a third party, the following error occurs: "target overrides the 'other _ LDFLAGS '......" Solution: ioscocoapods When CocoaPods was introduced to a third-party SDWebImage in my project today, a problem occurred. After the update is complete, you can directly use SDWebImage without having to pay too much attenti

([Platform isequaltostring:@"ipad2,4"])return @"IPad 2 (a1395+new Chip)"; if([Platform isequaltostring:@"ipad2,5"])return @"iPad Mini 1G (A1432)"; if([Platform isequaltostring:@"ipad2,6"])return @"iPad Mini 1G (A1454)"; if([Platform isequaltostring:@"ipad2,7"])return @"iPad Mini 1G (A1455)"; if([Platform isequaltostring:@"ipad3,1"])return @"IPad 3 (A1416)"; if([Platform isequaltostring:@"ipad3,2"])return @"IPad 3 (A1403)"; if([Platform isequaltostring:@"ipad3,3"])return @"IPad 3 (A1430)"; if([Pl

The popular solution is a key in most places where [Nsuserdefaults standarduserdefaults] is used, if it does not exist, which means that this is the first time the application is started, otherwise it is not the first bootIn APPDELEGATE.M, locate the "Application:didfinishlaunchingwithoptions:" Method and add the following code:1 if(! [[Nsuserdefaults Standarduserdefaults] Boolforkey:@"Firstlaunch"]) {2[[Nsuserdefaults Standarduserdefaults] Setbool:yes forkey:@"Firstlaunch"];3NSLog (@"first time

previous page are assigned a new value, the default Return button appears in the upper-left corner of the current page, with a left-pointing arrow, and the text is the title of the navigation bar on the previous page.Note: For the 2nd case, when assigning a new value to Self.navigationItem.backBarButtonItem, when creating Uibarbuttonitem, use:1 ID ) Target action: (nullable SEL) action; 2 3 -(Instancetype) Initwithcustomview: (UIView *) CustomView;Both methods are invalid, and the return butto

animated:yes];[Picker release];8.ios developers have encountered a mistake: exc_bad_access. This is quite similar to the second one. The usual debugging method is to add the nszombieenabled variable, adding the method to Baidu itself.and used in the development process[[Nsnotificationcenterdefaultcenter]To publish local messages, this also often occurs with exc_bad_access errors. This time only needs to be in your view alive Viewcontrollers of the De

1. How to set the font size of button title by codeSet Button.titleLabel.font = [Uifont systemfontofsize:2. Get the current time NSDate *timedate=[nsdate Date]; * Dateformatter=[[NSDateFormatter alloc] init]; [Dateformatter Setdateformat: @" yyyymmddhhmmsssss " ]; *locationstring=[dateformatter Stringfromdate:timedate];3. The method of judging whether the string is a null character-(BOOL) isblankstring: (NSString *)string { if(string= = Nil | |string==NULL) {

= Uiimagepickercontrollersourcetypecamera;[Self presentmodalviewcontroller:picker animated:yes];[Picker release];8.ios developers have encountered a mistake: exc_bad_access. This is quite similar to the second one. The usual debugging method is to add the nszombieenabled variable, adding the method to Baidu itself.and used in the development process[[Nsnotificationcenterdefaultcenter]To publish local messages, this also often occurs with exc_bad_acce

com.swalle.SWALLE1). Is the complete illustration:Click Create, the main interface will generate a new application iconClick on the selected application, entered the details of the interface, the inside are Chinese, according to their prompt information to fill in the corresponding information can be, here is not more introduction. When you have completed the information, click Save in the top right corner.The following is the operation of Xcode, mainly choose the data corresponding to the app

iOS Development Outreach-Audio processing (music player 4)Description: This article mainly introduces some detail control in the process of music player implementation.The effect of the implementation:　　One, the complete codeYYPLAYINGVIEWCONTROLLER.M file 1//2//YYPLAYINGVIEWCONTROLLER.M 3//20-Audio processing (music Player 1) 4//5//Created by Apple on 14-8-13. 6

iOS Development Outreach-Audio processing (music player 4)Description: This article mainly introduces some detail control in the process of music player implementation.The effect of the implementation:　　One, the complete codeYYPLAYINGVIEWCONTROLLER.M file 1//2//YYPLAYINGVIEWCONTROLLER.M 3//20-Audio processing (music Player 1) 4//5//Created by Apple on 14-8-13. 6

standard for persistence that Apple brought to IOS with the release of SDK 3. And there's much more! You'll learn to draw using quartz 2D and OpenGL ES, add multitouch gestural support (pinches and swipes) to your applications, and work with the camera, photo library, accelerometer, and built-in GPS. you'll discover the fine points of application preferences and learn how to localize your apps for multiple ages. you'll also learn how to use the new

For Apple's iOS developers, the latest version of the iOS 7.1 system, beta 4, has been released. The release is not long before the launch of the last Beta 3 release earlier this month. Developers who have registered with Apple can view the update log and upgrade from the developer center. This system version number

Document directory The world before multitasking Multitasking on Conclusion Address: http://www.drobnik.com/touch/2010/07/understanding-ios-4-backgrounding-and-delegate-messaging/ Update: added handleopenurl to the flow charts. Added uiapplicationexitsonsuspend. untangled some lines. Now that we all are moving our source code gradually to

file path.7.AFNetworkingAfnetworking, which may be more commonly used in iOS development, makes network programming more concise.:https://github.com/AFNetworking/AFNetworkingTwo examples of usage are common:It is important to note that:(1) Afnetworking default is to return the data as JSON to parse, if the return data is XML or require the response data not to parse operation, directly return to NSData, you need to set the resolution type to " Afxml