www.4585.net > DAtA to nsstring

DAtA to nsstring

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

NSString *value = @"1.23"; double d_value = value.doubleValue;

double number = 1.23424; NSString *ch ; ch = [NSString stringWithFormat:@"%lf\n",number]; NSLog(@"Begin to printf: \n"); NSLog(@"%@\n", ch);

1. 我七拼八凑以下类别来做到这一点的CBUUID:@interface CBUUID (StringExtraction) - (NSString *)representativeString; @end @implementation CBUUID (...

+(NSString *)stringTOjson:(id)temps //把字典和数组转换成json字符串 { NSData* jsonData =[NSJSONSerialization dataWithJSONObject:temps options:NSJSONWritingPrettyPrinted error:nil]; NSString *strs=[[NSString alloc] initWithData:j...

用字符将NSArray中的元素拼接起来 NSArray *array = [NSArray arrayWithObjects:@"hello",@"world",nil]; //如要用,:等字符串拼接,只需将下面的@" "空格换成@","或@":"即可 NSString *string = [array componentsJoinedByString:@" "]; NSLog(@...

+ (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString { if (jsonString == nil) { return nil; } NSData *jsonData = [jsonString ...

调用的方法参数能列出来吗? 看字面意思是,将NURL类型的参数传递给了NSString类型参数。 即,参数类型不匹配。

objective c将整型转换为字符型: Convert Integer to NSString: int Value = 112; NSString *ValueString = [NSString stringWithFormat:@"%d", Value...

Swift 提供了三种方式来比较字符串的值:字符串相等、前缀相等和后缀相等。 1,字符串相等 如果两个字符串以同一顺序包含完全相同的字符,则认为两者字符串相等: let quotation = "我们是一样一样滴." let sameQuotation = "我们是一样一样滴."...

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