Xcode - Your maximum App ID limit has been reached. You may create up to 10 App IDs every 7 days - 1.出现这种情况,直接用上一次的 Bundle ID 就行了,因为免费 App ID 账号苹果官方有所限...

iOS NSString拼接字符串,NSString拼接字符串,NSString stringByAppendingString,NSString stringWithFormat,猿说编程,

NSString 字符串的排序 - NSString 字符串的排序 sortedArrayUsingComparator sortedArrayUsingSelector sortedArrayUsingDescriptors

iOS NSURL 与 NSString相互转换 - NSString *str = @'www.codersrc.com'; //将string转化URL NSURL *url= [NSURL URLWithString:str]; //将URL转化string NSString *string = [url absoluteStri...

FOUNDATION_EXPORT NSString * const NotificationName; // 这是Fundation框架里面的宏 c/c++中不能使用 extern NSString * const NotificationName; // 这是c/c++的关键字,OC/c/c++通用 #defin...

ScaleToFill,ScaleAspectFit,ScaleAspectFill,ScaleToFill ScaleAspectFit ScaleAspectFill区别,猿说编程,

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 NSValue和CGSize转换,NSValue转CGSize, CGSize转NSValue,NSValue和CGSize转换,猿说编程,

iOS NSString插入字符串,NSString插入字符串,NSString stringByReplacingOccurrencesOfString,NSString stringByAppendingString,NSString stringByReplacingCharactersInRange,

iOS NSString获取指定下标字符,NSString获取指定下标字符,NSString substringWithRange,NSString characterAtIndex,