ios 12 iphone

release]; 12 pool = [[Nsautoreleaasepool Alloc]init];13 }14 }15 [Pool release]; 4). Automatic reference count (auto Reference counting, i.e.arc), if you enable arc, as long as you need to allocate and use objects as usual, the compiler will help you insert retain and release, You don't need to manually add it yourself. ARC retains only objective-c pointer objects, that is, objects that inherit nsobject.5).

: (UIView*) view;The view is added directly to the UIWindow , but the view's UIis not ignoredViewcontroller @property(nonatomic,retain)Uiviewcontroller * Rootviewcontroller;Automatically add Rootviewcontroller view to UIWindow , responsible for managing the Rootviewcontroller lifecycle? Common methods-(void) Makekeywindow;Make current UIWindow into Keywindow (main window)-(void) makekeyandvisible;Make the current UIWindow into Keywindow and show it UIWindow 's acquisition? [uiapplicationsharedap

();}); 8. Talk about the Object-c memory management method and process? A: 1). When you create an object using the New,alloc and copy methods, the object's retention counter value is 1. When you no longer use the object, you are responsible for sending a release or Autorelease message to the object. This will then be destroyed at the end of the service life. 2). When you get an object in any other way, assume that the object has a retention counter value of 1, and that it has been set

" @implementation personone-(instancetype) init{ if ( self = [Super init]) { _bank = [Bank Defaualtbank]; } return self;} -(void) Savemoney: (int) Money { //must be created using the method of creating a singleton object to create [_bank setmoney:[_bank Money]+money]; NSLog (@ "The Bank also has%d", [_bank money]); } -(void) Withdrawmoney: (int) Money { [_bank setmoney:[_bank Money]-money]; NSLog (@ "The Bank also has%d", [_ba

information; [Settings synchronize]; Synchronize the key value information to local; Now let's take a look at this user configuration information in the sandbox First look at the path to the application sandbox, using the Print Result: Path:/users/dolby/library/application support/iphone simulator/5.1/applications/ 55c49712-ad95-49e0-b3b9-694dc7d26e94 But there is no library in my Dolby User directory, this is because the system hides these fi

nsurl* URL = [[Nsurl alloc] initwithstring:@ "Http://blog.csdn.net/iukey"];[[UIApplication Sharedapplication]openurl:url];nsurl* URL = [[Nsurl alloc] initwithstring:@ "tel:110"];[[UIApplication Sharedapplication]openurl:url];iOS Call call three waysThe first way of calling[HTML] View plaincopy (void) makeacall{ NSString *number = @ "";//read in the phone number NSString *num = [[NSString alloc] Initwithforma t:@ "tel://%@", number]; N

default animation at all times, and the default animation time default value is 0.25s when the individual layer property is modified directly.5. Share with you a little bit of uiview conversion uiimage.+ (uiimage*) Imagewithuiview: (uiview*) view{ uigraphicsbeginimagecontext (view.bounds.size); Cgcontextref Currnetcontext = Uigraphicsgetcurrentcontext (); [View.layer Renderincontext:currnetcontext]; uiimage* image = Uigraphicsgetimagefromcurrentimagecontext (); Uigraphicsendimagecontext ()

IOS development Note 12: The ios7uitextfield crashes due to the limited number of words entered in UITextField on iOS7. In some scenarios, You need to limit the number of words you enter, for example, control in textField (textView is similar, and the cause of the crash is the same ), The input under will also listen. If not processed, it will easily crash. For example, when the limit on the number of wor

simple animation time curve that was previously said. Let's look at the animated curve of the object on the spring.Damping of the oscillating motionThis curve represents the motion of an object hanging on a spring, and there are many properties (such as pull, friction, and resistance) that affect its movement. If you look at the dark blue curve, it means that the system is under damped, meaning that the object will bounce back and forth before it reaches its final stable position. This is the t

Using storyboard to design static tabular data A. Implementation step 1. Controller inheritance UITableViewController2. Use Tableviewcontroller in storyboard to remove the original ViewController3. Set Class 4. Set a new view Controller for program entry 5. Set TableView style to grouped 6. Set the content of the TableView to static Cells, temporarily set section 1 (explained later) 7. Set Table The style of the View Cell is basic, and the image and title 8 are configured. Set TableView sections

Actually very annoying apple this set of shelves mechanism, audit cycle long, and speed and slow, but no way, can only shelves to AppStore, helpless.Before the shelves need to ensure that the application icon is complete, and in the Info.plist in the icon files added PNG pictures, otherwise the validate pass in the process;1, before the shelves, need to production type of Certificate,app id,distribution type of provisionning profile;2. Enter itunes connect to create the app, including the applic

First make a fake dataData=[nsarray arraywithobjects:@ "W", @ "WWE", @ "Wwweer", @ "Eee", @ "fff", @ "FFFQ", nil];Define a bool value that is Isfind initial value set to 0Isfind=no, which is not a search stateSet the different number of rows for the search and non-search states-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (Nsinteger) section{if (Isfind==no) {return data.count;}Else{return finddata.count;}}Set the cell-(UITableViewCell *) TableView: (UITableView *) Tabl

= [Ccactionsequence Actions:longeraction,blk,nil];[Sticknode Runaction:seq];} [Sticklonger scheduleblock:^ (Cctimer *timer) {@synchronized (gamescene) {Stick *sticknormal = [Stick Sticknormal];Sticknormal. Position= Sticklonger. Position;[Sticklonger Removefromparent];[Physicsworld Addchild:sticknormal];Gamescene. Stickingamescene= Sticknormal;}} Delay:Ten];}You see the first feeling of the above method is estimated: Very long ah! In fact, the content is very good understanding, basically it do

(No. 00004) implementing the brick-hitting game for iOS (12): scalable, I am a golden hoop (on )! The original or translated works of the giant panda and pig hope. You are welcome to reprint them. Please indicate the source for reprinting.If you think it is not easy to write, please let me know. If you think it is good, please give me a thumbs up. Thank you! Hopy ;) The general star category has been co

addattribute:nsfontattributename Value:label.font Range:range]; //the font color in the range is green[str1 addattribute:nsforegroundcolorattributename Value:[uicolor Greencolor] Range:nsmakerange (0, -)]; //Calculate the height of a stringCgsize attsize = [str1 boundingrectwithsize:cgsizemake ( -, maxfloat) Options:nsstringdrawinguseslinefragmentorigin |nsstringdrawingusesfontleading context:nil].size; Label.attributedtext=str1; Label.frame= CGRectMake ( -, -, Attsize.width, attsize.height); [

;provisioning profiles view② Check if the Code Signing Identity in Project and Target is set, it must be the same3. When depositing basic data types into Nsarray, you can use NSNumber, or you can use shorthand// nsnumber form _signtypesarr = [Nsarray arraywithobjects:[nsnumber numberwithinteger:3],[nsnumber Numberwithinteger:2], nil];// abbreviated form _signtypesarr = [Nsarray arraywithobjects:@ (2), @ (2), @ (2), @ (1 ), @ (3), @ (3), @ (3), nil];But when reading from the array, the following

: (NSString *) identifier NS_AVAILABLE (10 _10, 8_0);Unified Configuration Nsurlsession-(Nsurlsession *) session{if (_session = = nil) {Create NsurlsessionconfigurationNsurlsessionconfiguration *config = [Nsurlsessionconfiguration defaultsessionconfiguration];Set request Timeout to 10 secondsConfig.timeoutintervalforrequest = 10;Whether to continue the request (upload or download) in the case of a cellular networkconfig.allowscellularaccess = NO;_session = [nsurlsession sessionwithconfiguration:

In this essay, we just need to know what UIWebView is.UIWebView is a UI control provided by Apple to display a Web page, and it is also the most memory-occupying control.iOS8.0 after the WebKit framework, Wkwebview compared to UIWebView save 1/4~1/3 memory, fast, but no cache function.For the display of some shopping app pages is inevitable, so uiwebview for us also should be proficient in the song space.Let's give you a brief introduction of UIWebView. viewcontroller.m// cx-uiwebview//// Cre

jumps to its implementation code.2. Key points-The message consists of a receiver, a method name, and a parameter. Send a message to an object is also equivalent to the object "Invoke method ".-All messages sent to an object are handled by the dynamic message dispatch system, which detects the corresponding partyand execute its code.12th: Understand the message forwarding mechanism (what happens when an object receives a message that cannot be read)1. Message forwarding is initiated when the ob

must also implement the Test1delegate inside the method. When we write our own protocol, the general Xcode is the default to help us inherit the NSObject protocol. If you do not inherit the words have no big impact, because our objects are inherited from NSObject, and NSObject also implemented NSObject this protocol. So, when we need to invoke the method in the NSObject protocol, there is no error. However, Apple still recommends inheriting the NSObject protocol.protocol types of hidden classes