IOS

I have been looking for a permanent file storage solution on iOS, but there is no good method. Apple only allows operations on the directory in the sandbox, but now the permanent storage solution in the sandbox is not available (when the disk is

Original question: how to hide the keyboard in the iphone? There are two uiTextFields, but the keyboard cannot be hidden after the return key is pressed. I don't know how to set UITextFieldDelegate Protocol: [plain] @ interface YourViewController:

I am currently developing an iphone application. I need to click a button to modify the text size in the tag. I don't know how to implement this function? It should be developed in ios5. Thank you for your advice ~~ Solution: Create UILabel [plain]

Previous: http://www.bkjia.com/kf/201301/185018.htmlUINavigationController implements navigation in App delegation. @ property (nonatomic, strong) UINavigationController * nav ;. in the m file, @ synthesize nav;-(BOOL) application :( UIApplication *)

[Html] I recently made a project with the need to zoom in the Click image. I learned how to add the click event Method to the subclass of UIView. I would like to share with you: first, set UIView (or its subclass) to interactive: [html] imageview.

ASIHTTPRequest enables resumable upload. There are some introductions on the Internet, such as: [request setAllowResumeForFileDownloads: YES]; method. However, it is not a resumable upload. It can only pause and continue the application during the

[Cpp] // file name and type NSString * path = [[NSBundle mainBundle] pathForResource: @ "xls1" ofType: @ "xls"]; // obtain the NSData * data = [[NSData alloc] initWithContentsOfFile: path]; NSString * string = [[NSString alloc] initWithData: data

If we have many requests on the interface, but all the requests are invalid at this time, we may prompt the user "request failed", "request timeout", etc, it would be nice to prompt once, but every failed request triggers a prompt box to prompt the

[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:

Now I want to define a UIButton. This button has two images. One is the background image and the other is the image 1. I set the background image through setBackgroundImage and use setImage to set the display image, but because the image is larger

Problem description: Use CLLocationManager to obtain the name of the current city and country. Solution: [plain]-(void) getReverseGeocode {CLGeocoder * geocoder = [[CLGeocoder alloc] init]; if (currentLatLong. count> 0) {CLLocationCoordinate2D

[Html] /////// determine the network status when you first open the connection-(int) connectedToNetwork {NSString * kindStr; int kind; // create a zero address, the address 0.0.0.0 indicates querying the network connection status of the local

The capture screen CALayer instance uses the renderInContext method of Core Graphics to draw a View to the image context to convert it to another UIImage instance. Prerequisite # import + (UIImage *) imageFromView: (UIView *) theView {// draw a view'

Connection: didReceiveData: the request is successful and starts to receive data. If the data volume is large, it will be called multiple times; Connection: didFailWithError: An exception occurred when loading data; ConnectionDidFinishLoading: The

NSUserDefaults is suitable for storing lightweight local data, such as the user name and password of a login interface. In my opinion, NSUserDefaults is the first choice. You can directly read the last login information from NSUserDefaults at the

1 PrefaceIt is difficult to control the size of images displayed to users. 2. code exampleZYViewController. m: [Plain]@ Synthesize myImageView; -(Void) viewDidLoad{[Super viewDidLoad];// Do any additional setup after loading the view, typically from

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

Instructions for use Add, delete, modify, query, and create: FMDatabase # Import # Import "FMDatabaseAdditions. h" @ Class FMDatabase; /*** @ Brief manage data links, including links and close connections* You can establish a persistent connection.*/

[Cpp]// Put it in each refresh (subthread and pull-down refresh Public)IListCountNum = 1;IsEndList = NO; // Put it in each refresh (subthread and pull-down refresh Public)IListCountNum = 1;IsEndList = NO; [cpp] view plaincopyprint? //// // The

1 Preface Use the NSObject instance method msmselectorinbackground: withObject: to create a thread without directly processing the thread. 2. code exampleZYAppDelegate. m   [Plain](Void) firstCounter {@ Autoreleasepool {NSUInteger counter = 0;For