Xcode - Undefined symbols for architecture i386, in release mode
IssueIn Xcode, I try to run the target of simulator in release mode, the following error appears whe...
After upgrading iOS to 13.6, Xcode debug error "iPhone is not available.Please connect the device"
IssueAfter upgrading iOS to 13.6, I connet my iPhone to debug, but I get an error message saying "iP...
Concatenate strings in Objective C
Here are several ways to connect multiple strings using Objective C.stringByAppendingStringTo concat...
Convert between JSON String and NSDictionary/NSArray
In iOS, the NSJSONSerialization class of Objective C is used to convert between JSON strings and obj...
Convert between NSString and NSData
With Objective C in iOS, we can convert the value of NSString to NSData.NSString* str = @"Hello Worl...
[iOS] When scheme is Release, Undefined symbol: _RCTSetLogFunction
QuestionUpgrade React Native 0.60 to 0.61. When Scheme is set to Debug, it runs without problems. An...
POST request using application/x-www-form-urlencoded with Objective C
Using Objective C to post request withapplication/x-www-form-urlencodedbody. The data will be encode...
React Native Error: must be used from main thread only
QuestionIn iOS, I use Objective C to create my own native module.RCT_EXPORT_METHOD(startPay:(NSStrin...
React Native StatusBar dark-content not working on iOS 13 dark appearance
QuestionReact Native 0.60.5 . Light mode in iOS 13 or earlier versions is normal. However, there is ...
Example of multipart/form-data post in Objective C
Use Objective C to implement the http post method and send data with Content-Type in multipart/form-...
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