help with iphone

Iphone long cannot recognize by QR code. iphone long cannot recognize Long-pressed QR codes on Android can be recognized (provided that your version supports this function), but it cannot be recognized by the Apple version. It was detected by a personal test that the scaling problem was: 1. Set the initial scaling to 1. The maximum scaling value must be greater than or equal to 1. scaling is not supported

step.The resolution displayed on the device screen may be lower than that shown in the previous step.Before the image can be displayed, it must be downsampled (resized) to lower pixel resolution.To display the previous image, you must re-sample (resize) at a lower pixel resolution ).Physical DevicePhysical Device Finally, computed pixels are displayed on the physical screen.Finally, the calculated pixels are displayed on the physical screen.The PPI number tells you how to adjust pixels fit into

[IPhone advanced] XMPP-based IOS chat client (IOS client 1), iPhone exmpp After introducing the server, we will focus on writing our own IOS client program. Let's take a look at what we have done First download the xmppframework framework. Click ZIP to download Next, use Xcode to create a project Drag the following files into the new project Add framework And set Now we have all set up. Run it

+originalframe.size.width #import "AppDelegate.h" #import "AssistiveTouch.h" @interface appdelegate () { //hover box Assistivetouch * _WIN;} @end @implementation appdelegate//Set custom hover box coordinates-(void) setnew{ _win = [[Assistivetouch alloc] initWithFrame: CGRectMake (0, 0, 60, 60)];} -(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchOptions { Override point for customization after application launch. This sentence

1, please update the latest version of itunes, and then redo the recovery operation. This may be due to a corrupted or low version of the itunes file. This situation is directly to the official website to download the latest itunes reinstall can be. 2, choose to enter the DFU recovery mode to restore. Brief operation Essentials: Will the iphone shuts down, then simultaneously presses the switch machine key and the home key, sees the white App

In the iphone has a special power-on password setting option, the default state is off, that is not encrypted, the following step-by-step teaching you to complete the password settings: 1th Step, open the iphone and find the "Settings" icon, bash into: 2nd step, in the "Settings" option, find the "general" sub-item icon, click to enter; The 3rd step, find the "Password lock" option, the default state

Apple phone default is not directly at the same time multiple micro-mail, we first installed in the computer with a quick apple helper ! The installation was successful. We open the "Apple Helper" on our computer and then we connect the iphone to the computer. After confirming the connection, as shown in the following figure, search for "micro-letter" in the search box and click Install. After the confirmation of our Apple Assistant i

When the iPhone 5 comes out, we will adapt to screens with different resolutions like android. The new version of the company's products must be adapted to the iPhone 5. After some effort, it is done. I would like to share with you the following: IPhone 5 screen resolution: 1136x640, that is, when the height changes to 568, the name of the image is default-568h@2

+ ( NSString *)deviceString { // # Import "sys/utsname. H" struct utsname systemInfo; uname(systemInfo); NSString *deviceString = [ NSString stringWithCString:systemInfo.machine encoding: NSUTF8StringEncoding ]; if ([deviceString isEqualToString:@ "iPhone1,1" ]) return @ "iPhone 1G" ; if ([deviceString isEqualToString:@ "iPhone1,2" ]) return @ "iPhone 3G" ; if ([deviceString isEqualToString:@ "iPhon

a first responder, such as a mouse event or a keyboard event, which is the corresponding object. For example, in a multi-document program, the menu response events are generally connected to the FirstResponder, because the main interface is generally in another nib. At this time, FirstResponder is the FileOwner of your primary nib.Delegate object.Window. Window displayed when the application is started.After the application is started, you can customize your behavior as shown in the following f

The following is a summary of some problems when using h264 + AAC for video playback on iPad, iPhone, itouch, and other terminals. 1: audio and video synchronization problems The reason is mainly because of the TS file timestamp problem. Sometimes it will also cause problems after file encapsulation type conversion, For example, FLV-ts will cause audio and video to be not synchronized. The base time used by FLV (reference time): one second =

In iPhone development, we often need to perform animation switching between different pages, which looks better. There are three basic animations: 1. uiview Uiview provides five official animation effects for you: Uiviewanimationtransitionnone does not use the animation rotate from left to right to flip pages. The opposite is uiviewanimationtransitioncurlup, and uiviewanimationtransitioncurldown. Example: [Uiview beginanimations: @ "animat

1) on the Apple 6 mobile phone, click the "Settings" icon on the desktop, as shown in the following figure.2) then you can see a "sound" option in the "Settings" that you open, as shown in the following figure. (As shown in the following figure)3) click "sound" and enter the corresponding ringtone mode. For example, select the "Ringtone" option. (As shown in the following figure)4) Now we can change the vibration mode when the "Ringtone"

Step 1: Connect your iPhone to your computer and enable iTunes on your computer.Step 2: Click the device in itunes, and then click the video (music) icon and click "file menu"-"add file to database", as shown in the figure.Music:Step 3: Now our impact will be displayed in itunes.Step 4: Click "file-add file to database", or add the entire audio/video folder to the database, and then select the file or folder to be added o

1. To Download WeChat from Apple 6, we must go to the Apple App Store to download it. Click the App Store App on the iPhone 6 desktop.2. After opening the App Store, we will see a "search" column at the bottom (if the appstore is very slow, we can refer to: appstore cannot open the appstore blank problem solution)3. Enter "WeChat" in the search box and then click "Search".4. Now you will see the "WeChat" app. Cl

"How to replace the iphone battery _iphone battery Replacement Method" 1, as shown in the following figure we have two screws in the back of the Apple 4, we just need to use professional Qi to twist it off. 2, after lifting the screws, you need to push up the rear cover as shown. This process needs to be very careful, otherwise the glass shell is likely to be damaged: 3, okay, now we can get the battery out, but one thing to note is that the ba

What this foreigner writes is worth learning. Turn it over first. Http://ignorethecode.net/blog/2009/08/07/virtual-keyboards-on-iphone-and-android/ August 7, 2009 virtual Keyboards On iPhone and Android I have writtenAbout virtual keyboards before. Their main advantage is that they allow for devices with huge screens while retaining slender hardware. A hardware keyboard forces failed to create complex fold

Every product launched by Apple will attract the attention of IOS programmers! Should I adapt again? Should I learn new things again? All kinds of worries are on your mind. Next, let me talk about my understanding of iPhone 6 and iPhone 6 plus adaptation: 1. First of all, we need to understand that although the resolution of iPhone 6 and

An error occurred while calculating the label width (height) for ios on iPhone 5s and iPhone 6. When using Label today, we need to calculate the UILabel height. We found that the height displayed on 4, 4s is normal, and an error is displayed on iPhone 5s and iPhone 6. The method is as follows: NSString * teacherCommen

Reprint: http://blog.sina.com.cn/s/blog_7b9d64af0101bu9j.htmlMany times, we need to get the user's iphone version number, or the app's current version number. Care about the following two aspects: first, the application logic will be based on the iphone hardware version number to deal with the corresponding! Second, we need to get the current version of our app because of some kind of demand.first, obtain t