iOS NSString 替换字符串 - (NSString *)stringByReplacingOccurrencesOfString:(NSString *)target withString:(NSString *)replacement options:(NSStringCompareOptions)options range:(NSRa...

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Object-C private var mobileDevice文件夹

iOS NSURL URLWithString 与 fileURLWithPath 区别 - URLWithString 与 fileURLWithPath 的区别在于前者用于网络，后者用于本地 NSURL *appURL = [NSURLURLWithString:urlString]; //网络url NS...

Xcode – Xcode13 The Legacy Build System will be removed in a future release - The Legacy Build System will be removed in a future release. You can configure the selected build sys...

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iOS NSString 和 bool 相互转换 NSString *str1 = @'YES'; NSString *str2 = @'NO'; //ok NSLog(@'str1 = %d str2 = %d',[str1 boolValue],[str2 boolValue]); BOOL a = YES; BOOL b = NO; NSSt...

IOS - UIImage imageWithContentsOfFil 和 imageNamed 区别 - 使用 imageNamed 加载沙盒的素材，偶尔不正常，有时候为上一次加载的素材，即路径正常，加载的素材又可能是上一次缓冲区的素材（头...