IOS

Landscape Vertical Screen Portrait horizontal screen The most effective way is: in Willrotatetointerfaceorientation:duration: method to store the direction: Drviceorientation = Tointerfaceorientation; and then in another way, use the corresponding

When declaring a property, in the header file: @interface Myclass:nsobject { float value; } @property float value; @end In the implementation file: @synthesize float value; The @synthesize instruction is equivalent to having the compiler

Recently, a friend asked me similar micro-letter voice playback of the Speaker animation and interface image loading loading interface is how to achieve, is not a GIF Picture It! My answer is of course negative, of course, some people use GIF

Recently idle to boredom, studied the iphone desktop icon jitter, the Internet has a similar case, but I think the effect is really bad, I also write a play, the need for small partners can refer to. Imitation iOS icon jitter ? 1 2 3

The UIButton button is the most commonly used control in iOS development, and as a basic learning tutorial for iOS, beginners need to understand their basic definitions and common settings to be proficient in development. First, the definition of

The most depressing thing about iOS development is that the program crashes without warning, using the BT command to play the call stack, giving a bunch of system exc_bad_access information, and there's no way to locate the problem. First of all,

[Code Note] iOS-NSFileManager, ios-nsfilemanager I. Code. # Import "ViewController. h "@ interface ViewController () @ end @ implementation ViewController-(void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view,

Are you ready for IOS development ?, Getting started with ios development The most common knowledge about IOS is the IOS system exclusive to Apple mobile phones. It can also be said to be a single task manager. This can be said to be an advantage.

IOS local video and network video stream playback, ios video network video stream Requirement: Recently, the company needs to implement a building intercom function: The Door Machine (connected to WIFI) dialing calls the indoor device (corresponding

Use TestFlight-no longer worry about environment errors, and no worries about testflight I. Preface During iOS development, various bugs are inevitable. Therefore, you will solve all the bugs and then submit them to the AppStore. However, some

KVO and ioskvo1. KVO Concept KVO is the key-value observation. It provides a mechanism for the observed object to receive notifications when its attributes change, so as to make corresponding changes.2. KVO implementation principle Here is an isa

IOS local time, UTC time, timestamp, and other operations/get the current year, month, day, iosutc // Obtain the current time and convert it to a string -(NSString *) dateTransformToTimeString {NSDate * currentDate = [NSDate date]; // obtain the UTC

Simple use of PlistBuddy, plistbuddy  Simple use of PlistBuddy Since PlistBuddy is not in Mac's default Path, we need to reference this tool through the absolute Path: View help /usr/libexec/PlistBuddy --helpLet's take a look at PlistBuddy's

The reference of member variables in the block causes memory leakage. Pay attention to circular references when using block. Therefore, use _ weak to modify the block to produce weak references before using self. Another case is recorded here:

Upload notes for images and videos Image uploading is often used in our development, such as the upload of an avatar, and publishing multiple images in the release space. Here, I use network resources for reference, it also relies on qiniu cloud

How can we use YYModel to parse nested models? During project development, it is inevitable to perform nested model analysis on the obtained data. It is better to have two layers at a time. However, it is a headache for beginners. Today, let's talk

Android can open another app in an app. First, obtain the package name: Use aapt // aapt is a tool that comes with the sdk. It is stored in the sdk \ builds-tools \ directory. For example, switch the command line to the aapt.exe directory and run:

IOS Bluetooth development-CoreBluetooth details, ioscorebluetooth CoreBluetooth APIs are based on the BLE4.0 standard. This framework covers all the details of the BLE standard. Only new iOS devices and Mac devices are compatible with the BLE

[Code Note] iOS-archive saves the image to a local device, 1. Engineering Drawing: Ii. Code: RootViewController. h #import @interface RootViewController : UIViewController{ UIImageView *imageView;}@end   RootViewController. m # Import

Memory leakage caused by Handler (2) handler Leakage 1. Handler usage upgrade: Use Weak references-solve static internal class access to external class       2. In handlerMessage, set the value for TextView,Pay attention to the weak reference