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
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
it is started, but can only go into the system after a series of settings, which can preliminarily determine that the machine is not activated. If the user buys a mobile phone and directly enters the system, the machine must not be a brand new machine.Step 5: Mobile Phone activation time queryThe machine activation time of the iPhone 4S can be queried. The method for querying the iPhone 4S activation time
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
Full version of RadioStream application source code (iphone and ipad), iphone and ipad
IntroductionRadioStreamis full native application for iPad and iPhone. This application streaminternet radio music.Packagecontains two projects: one for iPad and one for iPhone, so you can release HDversion for iPad and regu
IPhone 4S is connected to a computer and cannot recognize iPhone devices: Apple mobile device USB driver Driver Installation failure shows yellow exclamation mark Solution
Apple mobile device USB driver Driver Installation failure shows a yellow exclamation point, cannot charge, let alone iTunes.
The correct solution is:
1. Uninstall the iTunes software installed on your computer, and then Uninstall "A
Tencent Superfix is the internet model of professional mobile phone repair platform, mainly to online mail repair. Main mobile phone Repair "safe to see", the use of original accessories, transparent prices, 180-day free warranty and Courier Express. Effectively avoid the traditional mobile phone repair and disorderly quotes, uneven quality, warranty without door and so on. In addition, compared to traditional mobile phone maintenance more convenient: Users login to the official website or in th
) {
console.log (Res.model)
console.log (res.pixelratio)
Console.log (res.windowwidth)
console.log (res.windowheight)
console.log (res.language)
Console.log ( res.version)
Console.log (res.platform)
}
)
Which model is the device model and other information, if the model contains the iphone x, you can think that the device for the iphone x, we are in the import file App.js to
What are the new features of iOS11? Does the old iPhone really slow down? ios11 new features iphone
1. [iOS 11] Introduction to the top ten practical new functions of iOS 11
2. [iOS 11] iPhone QR code scanning can be completed through built-in cameras!
3. built-in screen recording function for iOS 11! You no longer need to use a third-party application to scre
Use a built-in browser to click the drop-down box and the page jumps to the iphone. What should I do? Jump to the iphone
Read more: how to pay for H5 pages with built-in browsers
Scenario reproduction:
While happily packing up and preparing for work, the girl in the test department ran to raise a bug: "under the iphone, click the drop-down box and the page jumps
Why do you require android to be smoother than iphone ?!, Why Android iPhone?
I saw an article titled why Android phones are not as smooth as iPhone phones? There are many reasons for this: the android multi-thread operation continues to run even if it is removed to the background; android uses java (in fact, android uses a custom virtual machine ), ios uses obje
When developing an iPhone program, the first thing that comes into use is not the source code, but the project files and directories. Let's take a look at its composition.
IPhone application directory structureIPhone applications are placed in a secure structure called sandbox. The program can only access resources in its own sandbox.
IPhone applications and Mac
It's time for a super contest! This time it was disappointing that there was no iPhone 5, but there were a lot of improvements in the iPhone 4S itself alone. Let's continue reading, look at the end of the iPhone 4S compared to the iPhone 4 what has changed!
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