将NSString值转换为浮点值时得到0.0000 [英] getting 0.0000 when converting NSString value to float
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问题描述
在我的应用程序中,我试图将NSString值转换为浮点使用
$ p $ N $> student_Percentage];
float f = [value floatValue];
但是我得到f的值为0.00000。我尝试使用NSNumberFormatter,NSNumber ...但仍然得到0.00000。
解决方案
如果接收方不是以有效的
文本开头的,floatValue返回0.0表示一个浮点数。
从字符串中删除双引号。
NSMutableString * value = [dict objectForKey:@student_Percentage ];
[value replaceOccurrencesOfString:@\withString:@options:NSCaseInsensitiveSearch range:NSMakeRange(0,[value length])];
float f = [value floatValue];
In my application, i tried to convert NSString value to float using
NSString *value = [dict objectForKey:@"student_Percentage"];
float f = [value floatValue];
But I'm getting the value of f as 0.00000. I tried with NSNumberFormatter, NSNumber... but still get 0.00000.
解决方案
floatValue returns 0.0 if the receiver doesn’t begin with a valid text representation of a floating-point number.
[dict objectForKey:@"student_Percentage"]
value should be like 8.9.
Remove double quotes from your string.
NSMutableString *value = [dict objectForKey:@"student_Percentage"];
[value replaceOccurrencesOfString:@"\"" withString:@"" options:NSCaseInsensitiveSearch range:NSMakeRange(0, [value length])];
float f = [value floatValue];
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