IOS

On the Internet, I found out how to restore the resources and images in the app for a long time. The amount of information is small. I only need to make a few general statements and specifically record the following information for others to

When using the latest Sina Weibo sdk for development, if the iphone is more than 6.0 of the system, you can directly call the sso Sina Weibo client. You only need to add the following four methods to appdelegate. -(Void) applicationDidBecomeActive :(

Each product of Apple has several types, from iphone to ipod and ipad, and each product has several types, from iphone 2g to iphone 5, from iPod touch5 to iPod touch5, from ipad1 to ipad4, nothing else can do. But how do I detect these types in ios

We know that you can use the Prefix. pch file in the IOS project to perform some pre-compilation operations, such as introducing global header files and defining constants. I encountered an incredible problem when I was preparing to write a Demo

Bundle creation is actually a derivative of the previous static library creation. In the creation of static libraries, our static libraries often carry files, images, and multimedia resources. You can add the resource files of the plug-in to the

Table view is the most frequently used view in iOS development. We usually choose to display data in the form of tables, such as address book and channel list. The table view's functions such as segmentation, grouping, and indexing make the data we

We will inevitably use classes not available in earlier versions during development. If we want to make our applications compatible with multiple versions as much as possible, we need to consider what to do if the class we use is not in a lower

During development, we will use nsicationicationcenter and NSFileManager to obtain their instances through [nsicationicationcenter defacenter center] and [NSFileManager defaultManager]. In fact, this is a singleton. Let's take a look at void

[Java] # import "Utility. h "@ implementation Utility + (NSString *) createMD5 :( NSString *) signString {const char * cStr = [signString UTF8String]; unsigned char result [16]; CC_MD5 (cStr, strlen (cStr), result); return [NSString stringWithFormat:

I have added a new knowledge in iOS5, that is, ARC. In fact, I don't like it very much because I am used to managing the memory myself. However, learning is still necessary. During iOS development, attribute definitions are often related to retain,

For example, set the delegate of B to A on the page, //. in m, B * B = [B alloc] init]; B. delegate = self; [self. view addSubview: B]; [B release]; then 1. A is responsible for creating B, and A's lifecycle must be longer than B (B exists, A must

IOS does not provide an interface to control the brightness of the system, so what the app can do is darker than the brightness set by the system. The specific method is to put another window on the keywindow of the entire app and set a black

NSString, NSArray, NSData, and NSDictionary all implement the NSCoding protocol and can be directly archived by calling writeToFile. What about the OBJC custom object type? First, implement the NSCoding protocol, rewrite the encodeWithCode method

// Exponential operation NSLog (@ "%. f", pow (3, 2); // result 9 NSLog (@ "%. f", pow (3, 3); // result 27   // Square operation NSLog (@ "%. f", sqrt (16); // result 4 NSLog (@ "%. f", sqrt (81); // result 9   // Rounding up NSLog (@ "res: %. f",

Create a scrollview and add an imageview to it. The main code for creating an imageView is as follows: @ Interface ImagePageView: UIView @ Property (nonatomic, retain) UIImageView * imageViewOne; @ Property (nonatomic, retain) UIImageView *

It has been a long time since the iPhone 5 was released. Due to the changes in screen size, flexible UI control by the program is particularly important. In fact, this summary still uses the relevant attributes in the old API, but we didn't think

1 PrefaceUIBarButtonItem is a navigation bar button. On the left and right sides of the navigation bar, they have many different shapes and forms. 2. Code explanationZYViewController. m   [Plain](Void) viewDidLoad{[Super viewDidLoad];// Do any

1 PrefaceUIButton is a button control, which is very common in IOS development. You can set events for it. 2. code exampleZYViewController. m:   [Plain]@ Synthesize myButton; -(Void) viewDidLoad{[Super viewDidLoad];// Do any additional setup after

1 PrefaceThis article is a temporary plug-in. Due to work requirements, the company requires that the project in Xcode be generated into an IPA file for version record. because we do not have a developer account, so we need an alternative method for

Typedef enum {UITableViewCellSelectionStyleNone,UITableViewCellSelectionStyleBlue,UITableViewCellSelectionStyleGray} UITableViewCellSelectionStyle// Cell button format on the rightTypedef enum {UITableViewCellAccessoryNone, // don't show any