//判断是否为整形：- (BOOL)isPureInt:(NSString*)string{    NSScanner* scan = [NSScanner scannerWithString:string];    int val;    return[scan scanInt:&val] && [scan isAtEnd];}//判断是否为浮点形：- (BOOL)isPureFloat:(NSString*)string{    NSScanner* scan = [NSScanner scannerWithString:string];    float val;    return[scan scanFloat:&val] && [scan isAtEnd];} if( ![self isPureInt:insertValue.text] || ![self isPureFloat:insertValue.text])    {        resultLabel.textColor = [UIColor redColor];        resultLabel.text = @"警告:含非法字符，请输入纯数字！";        return;    }