浮点数处理并去掉多余的0

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
     NSLog(@"--float-%@-",[self stringDisposeWithFloat:9.000899990000]);
    
}
//浮点数处理并去掉多余的0
-(NSString *)stringDisposeWithFloat:(float)floatValue
{
    NSString *str = [NSString stringWithFormat:@"%f",floatValue];
    long len = str.length;
    for (int i = 0; i < len; i++)
    {
        if (![str  hasSuffix:@"0"])
            break;
        else
            str = [str substringToIndex:[str length]-1];
    }
    if ([str hasSuffix:@"."])//避免像2.0000这样的被解析成2.
    {
        return [str substringToIndex:[str length]-1];//s.substring(0, len - i - 1);
    }
    else
    {
        return str;
    }
}