IOS

/**@ Method: play a movie*/-(Void) playMovie :( NSString *) fileName {// Video file pathNSString * path = [[NSBundle mainBundle] pathForResource: fileName ofType: @ "mp4"];// Video URLNSURL * url = [NSURL fileURLWithPath: path];// Specifies the

Before and after 5.0, the corresponding call method has changed the parameter. If a method later than 5.0 is used and cannot be used in a lower version, apple does not advocate the method used in a lower version, there is a

Modify the view of the user's current location in mkmapview to the ui you need.The effect is as follows:The Code is as follows: Source code here. Copy all. If some methods are missing (for image processing functions, leave a

Table A-5 NSServices dictionary keywords Keyword type description NSPortNameString this keyword specifies the port name provided by your application listener to accept external service requests. NSMessageString this keyword specifies the instance

// UIView + ColorOfPoint. h@ Interface UIView (ColorOfPoint)-(UIColor *) colorOfPoint :( CGPoint) point;@ End // UIView + ColorOfPoint. m# Import "UIView + ColorOfPoint. h"# Import @ Implementation UIView (ColorOfPoint) -(UIColor *) colorOfPoint :(

For example, Colorbox (version: 1.3.19 + jQuery 1.7.2) fails to center the screen in the iPhone browser. After checking for half a day, we found that viewport is set on the page, while $ window. width ()/$ window. height () is used in Colorbox to

1@ Synthesize window = _ window;2@ Synthesize viewController = _ viewController;Generally, no = part is included. @ synthesize window = _ window. How can this problem be solved? What are the variables of _ window and _ viewController? In the. h file,

Always remember the life cycle of viewsDo not access self. view in the init MethodUse data source protocols (data source Protocol) to clearly distinguish data from the view UIViewControllerUse an existing navigationitem object NSObjectExpose only

[Plain]/* Verify the mobile phone number modified by helensong */BOOL validateMobile (NSString * mobile ){// The mobile phone number starts with 13, 15, and 18 and contains eight \ d numbersNSString * phoneRegex = @ "^ (13 [0-9]) | (15 [^ 4, \ D]) |

Because Apple does not currently support this function, you can only make an excessive effect after the App is started: [Cpp]-(BOOL) application :( UIApplication *) application didfinishlaunchingwitexceptions :( NSDictionary *) launchOptions{Self.

There are many introductions on the implementation and Principles of the ios message push mechanism (APNS) on the Internet, but they are scattered.After several attempts, I finally successfully implemented the push process.Here, I will post my

1. Enable local push and set the attribute [cpp] NSString * str = @ "Local push information"; UIApplication * app = [UIApplication sharedApplication]; UILocalNotification * notification = [[UILocalNotification alloc] init]; // initialize the local

Use UIButton to add @ property (nonatomic, strong) UIButton * myButton; @ synthesize myButton;-(void) buttonIsPressed :( UIButton *) to the user interface *) paramSender {NSLog (@ "Button is pressed. ");}-(void) buttonIsTapped :( UIButton *)

Using Complex touch and gesture Apple's Class with various gesture identifiers, the following uses several gesture identifiers for implementation: Click, sweep, hide, and rotate (shaking is not involved for the moment ). Each gesture has a pop-up

1. UITextField initialization and setting UITextField * textField = [[UITextField alloc] initWithFrame: CGRectMake (10,200,300, 40)]; textField. borderStyle = UITextBorderStyleRoundedRect; textField. font = [UIFont systemFontOfSize: 15]; textField.

-(Void) viewDidLoad{[Super viewDidLoad]; [[Nsicationcenter center defacenter center] addObserver: self selector: @ selector (keyboardWillShow :) name: UIKeyboardWillShowNotification object: nil];} -(Void) didReceiveMemoryWarning{[Super

In iOS development, you need to interact with the WEB server, such as displaying a batch of data from the web service on a table. The Data Interaction format is XML, and the protocol used is SOAP. The requested data contains images. Generally, the

Reachability is a database officially provided by Apple to check the network status. It must be used by every network-based application to check the network status. Of course, I am no exception. however, just as I was full of confidence and used

1. string constants NSString * s = @ "test "; NSLog (@ "s: % lx", [s retainCount]); // ffffffffffffff (UINT_MAX (Maximum value an 'unsigned int ')) Because "test" is a String constant, the system does not reclaim it and does not reference it for

1 Preface When executing tasks unrelated to the UI or interacting with the UI, like executing other tasks, it takes a lot of time and the above situations often occur. We can use the dispatch_sync function to execute synchronization tasks on a