Swift

Apple's new place of OC for a high-level programming language!

Open Xcode Live Preview for UIKit

One of the big benefits of using SwiftUI is that you can hot update the App like Flutter,UI code changed,Will be directly reflected in the simulator or the real machine,Greatly improve the efficiency of writing user interfaces,No need to change 1px,run,Various clicks,Then check the loop of effects。But it's too early to use SwiftUI,After all, there is still a lot of iOS 12 Equipment in operation[……]

Click link to continue reading...

macOS uses the atos command to parse arbitrary crash records and sample data

Recently, the drop grid input method has encountered several difficult to reproduce problems-the key is that it will not cause a crash。This makes the crash statistics function completely ineffective,The specific performance is that the input method will suddenly get stuck for a few seconds in some cases,Very annoying。Then I thought,macOS comes with activity manager,There is a "sampling" function,You can see the current execution (call) status of the corresponding process,Can I use it to analyze the cause of the error?

In Japan[……]

Click link to continue reading...

Swift Python Json data exchange signature

It has been a very popular self-signed certificate for HTTPS decryption,Then there are a lot of people realize crack of App by modifying Apple's internal purchase receipt。In fact Verified Purchase should be connected to the server App,Server to communicate with Apple's servers,The results are then sent to the App - but a lot of developers (including individual developers and corporate developers) do not bother to go to a special server maintenance,Therefore, the direct use of App and Apple[……]

Click link to continue reading...

Swift Debug EXC_BAD_ACCESS in AppDelegate

 

Many people will encounter in the development EXC_BAD_ACCESS ,I'm sorry,This time, Xcode does not give any detailed solutions。

usually,This is due to a memory error caused。In simple terms it is that you create an object A,But in the later time of the visit,A memory in this area have been moved to do the system he used,For example, put the object B here - your[……]

Click link to continue reading...

How pocketed input method is a process of PUSH messages

Do the soft keyboard on a mobile device,So how to handle user clicks position,It is the first problem you encounter,in this problem,I have come a long way。

I touch a logical development since input method pocketed roughly classified into three stages,Now were Laijiangjiang design ideas,I hope this can help you。

The first generation of touch engine

Obviously,For a beginner,There's nothing better use of the control system,Full-featured[……]

Click link to continue reading...