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ios nsstring 替换

NSRange range = [str rangeOfString:@"aaa"]; //现获取要截取的字符串位置 NSString * result = [str substringFromIndex:range.location]; //截取字符串 希望可以帮到你!

NSString *String = [NSString StringWithFormat:@"%@",number]; 或者 NSString *String = number.description;

NSString *content = @"test123"; NSRegularExpression *regularExpression = [NSRegularExpression regularExpressionWithPattern:@"[a-zA-Z]" options:0 error:nil]; content = [regularExpression stringByReplacingMatchesInString:content ...

UIButton *btn = xxx; [btn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal]; 常态字体颜色 [btn setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted]; 点击态字体颜色 [btn setTitle:NSString for...

1.已知类名@"SomeClassName",初始化此类的一个实例: Class someClass = NSClassFromString(@"SomeClassName"); id obj = [[someClass alloc] init]; 比如想初始化个UILabel id obj = [[NSClassFromString(@"UILabel") alloc] init]; NSLog(@"Wh...

NSString是不可变字符串,没办法删除最后一个字符,你可以获取NSString的从0 ~ length-1的子串,也就相当于删除了最后一个字符。 代码如下: NSString *a = @“abcdefg”; NSString *b = [a substringToIndex:[a length]-1] b就是a删除最后一个字...

代码如下: NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateStyle:NSDateFormatterMediumStyle]; [dateFormatter setTimeStyle:NSDateFormatterNoStyle]; [dateFormatter setTimeZone:GTMzone]; NSDa...

NSString *str = @"AA21f0c1762a3abc299c013abe7dbcc50001DD"; NSData* bytes = [str dataUsingEncoding:NSUTF8StringEncoding]; Byte * myByte = (Byte *)[bytes bytes]; NSLog(@"myByte = %s",myByte);

NSString *str = [NSString stringWithFormat:@"%d",unichar];

iOS 如何将 long 或 long long 转换成 NSString 1、曲线 // 可以继续加长至 long long long longValue = 104024; // long 型转换 NSNumber *longNumber = [NSNumber numberWithLong:longValue]; NSString *longStr = [longNumber stringValue]; ...

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