A brief review of quartz2dOne, what is quartz2d
Quartz 2D is a two-dimensional graphics engine that supports both iOS and Mac systems ⼀
Quartz 2D can complete the work:
Drawing graphics: line \ triangle \ Rectangle \ Circle Arc etc.
Draw text
Drawing \ Generating pictures (images)
Read \ Build PDF
Screenshot \ Crop Picture
Customizing UI Controls
Ii. the value of quartz2d in iOS development
To hel
The reason to publish this blog, but also from the recent development work to achieve a small demo, of course, this demo will not involve the work of some of the content of the app, below to implement the demo is universal. Because of the iteration of the project requirements, it is required to add the provincial and municipal information of the branch in the bank card binding. One of the better ways to choose this kind of information in iOS is to use
certificate information interface as shown in the following illustration: User email Address: Fill in the email address of your application for Apple Developer account, common name (default), CA e-mail address empty, select Save to disk, click "Continue".
1.3.3. Save request file name and locationChoose a saved location, such as selecting a desktop, and clicking "Save" to see a certificatesigningrequest.certsigningrequest certificate request file on the desktop. This file needs to be used whe
After IOS upgrades to 10, you will find that you are unable to perform a true machine test. I also encountered this in the iOS 8.4, 9.3 update. The reason is that the iOS 10 SDK is missing from Xcode's devicesupport. So you can choose to update the Xcode to the latest version on it, it is now necessary to update to Xcode 8. But Xcode update speed you know, fast o
Problem description
The following business scenarios, in iOS applications, embed the H5 page, call him a page, click a page to jump to b page, b page has a button, call him button S, button s will trigger an AJAX event, to request an application interface, return an HTML, the return of HTML is defined as h variable name bar, Ajax invocation ("Body"). html (h); H is the content of a form, which is set ("Body"). html (h); H is the content of a form,
One, iOS push
A push action is generated only if the program is not running in the foreground.
iOS Push process:
Prior to this, the application needs to obtain the certificate (identity) provided by the Apple, and when sending a message to APNs through the server, it will need to verify and verify that it can get the right to send the push message. You can control when the push message is displayed.
image, or are loading image data over the Web, you can want to create a incremental image source so, The image data as you accumulate it. Translates: "If you want to load a particularly large picture, or load a picture from a network, you can achieve incremental loading by creating a imagesource." "The translation is not very authentic, this is probably the meaning, in the past when doing Powercam, when in order to deal with the oversized image on iOS
Device card upgrades on sliding screen
Many iOS 9 users in the upgrade card in the "Sliding Upgrade" interface, and then the screen is completely unresponsive or even panic. Apple has now acknowledged the existence of the bug and has given its users official advice:
Method One: If you have upgraded to iOS 9:
1, the device through the USB connection to the computer, and open itu
development environment
(3) Integrated Codepush SDK----IOS
6. Terminal CD to RN directory, then install Codepush SDK, terminal input NPM install--save React-native-code-push
7. Pull the rn.xcodeproj directly into the project in the React-native-code-push folder libraries the following figure
8. Join LIBZ.TBD
9. Add $ (srcroot)/... to the header Search paths in build settings. /node_modules/react-native-code-push
10. In appdelegate such as the followi
iOS has a variety of animations, animation to do a good application will be more attractive, use it will be more dazzling, this article introduces several basic iOS animation, a single explanation for easy to understand, but the real use, combined with will look more handsome, this depends on the specific application scene and everyone's imagination.
All the underlying animations give UIView a basic approa
In the last few months, I've been doing inboxkit research, which is about the iOS SDK for the Inbox platform. Inbox provides high-level APIs for interacting with mail data, allowing you to ignore imap,exchange,mime parsing and thread detection (and, of course, a lot of other things ...) and make you work on creative app creation. Our goal is simple: try to create an elegant, cross-vendor email application. After all, it's hard.
In Objective-c, Inboxk
Now that the mobile device sector is almost unified by Android and iOS, smart terminals are becoming more powerful and popular, so how do we choose to face so many devices and Android and iOS?If you are a userIf you do not bad money, it is best to buy ios,iphone or ipad, is indeed a good product, its user experience is really good. Although it is said that
Automatic backup and fallback of Cisco iOS profiles requires the use of the Archive Archive configuration mode feature of iOS. In general, only the version number of iOS has the Archive configuration mode feature in 12.3 (4)
Cisco iOS profile automatic backup All commands are as follows:
router>
Router>enable
Ro
Objective:That saturation is saturated, and that unsaturated is not saturated.A), the rapid development of mobile Internet in the past few years and the tide of Internet entrepreneurship, making IOS development a hot job. Because of the scarcity of iOS development in previous years and the high level of self-learning compared to other technologies (requiring Macs and iphones), and startups mostly using mobi
First, the previous article review Prior to the introduction of the iOS Learning Roadmap, because there are some Android development problems, so the delay for some time, then the next time we will continue to start the fury of iOS learning, according to international practice, the first application of course is our HelloWorld program. Then this article will be a simple program to explain the program lif
The apple ISO system and Google Android user interface are very simple and beautiful, but the style is still different. Personally, in the design style alone, most of the time, I seem to prefer Google's Android system, although I now use the 3GS, perhaps this is the reason, and then a good design to see how much will be some aesthetic fatigue.
In this article, I will intercept the same functional interface of iOS and Android, with a total of five par
We are often confronted with the problem of running apps on the iphone or on the ipad tablet, sometimes opening an app and then "flashing back". For developers, this is definitely a headache. So how do I get to the iOS device crash log? This provides some simple ways for developers to communicate with users.
It is normal to encounter a program crash in iOS development, how to catch exception information wh
In this article we will show you 10 questions you might want to ask before developing the iOS platform (iPhone, ipad, ipod) application.
1. Which platform should we target?
Only iOS (the IPhone and IPad) and Android have enough downloads, purchases, and usage. Other platforms also have applications, but the majority of users are too small, or the application download is not enough to support.
1. Brief Introduction:
1.1 iOS has three kinds of multithreaded programming technology, namely:
1., Nsthread
2, Cocoa Nsoperation (iOS multithreaded programming nsoperation and the use of Nsoperationqueue)
3, GCD full name: Grand Dispatch (iOS multithreaded Programming Grand Dispatch (GCD) Introduction and use)
These three programming methods from top to bot
AtsAPP Transport Security, a new feature in IOS9, is an important improvement in Apple's network communications security. In iOS 9 and OS X 10.11, non-HTTPS network access is prohibited by default, and before January 1, 2017, in order to reduce the impact, we can add the "nsapptransportsecurity" dictionary to the Info.plist and " Nsallowsarbitraryloads "set to" YES "to disable ATS. However, after January 1, 2017, this method is no longer allowed to by
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