1 禁止侧滑

- (void)viewDidAppear:(BOOL)animated {

[super viewDidAppear:animated];

if([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {

self.navigationController.interactivePopGestureRecognizer.enabled = NO;

}

 在其他离开改页面的方法同样加上下面代码

if([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {

self.navigationController.interactivePopGestureRecognizer.enabled = YES;

}

2 pch路径

$(SRCROOT)/$(PRODUCT_NAME)/PrefixHeader.pch

3 阿拉伯数字和汉字相互转化：

http://www.jianshu.com/p/aa2873d72a51

4 设置半圆角

    UIBezierPath * codePath = [UIBezierPath bezierPathWithRoundedRect:_codeBtn.bounds   byRoundingCorners:UIRectCornerTopRight | UIRectCornerBottomRight cornerRadii:CGSizeMake(5,5)];
    CAShapeLayer*maskLayer = [[CAShapeLayer alloc]init];
    maskLayer.frame = _codeBtn.bounds;
    maskLayer.path = codePath.CGPath;
    _codeBtn.layer.mask = maskLayer;

5 tableview实用小方法

http://blog.csdn.net/daiyelang/article/details/39076317

6 定时器实用小方法

创建定时器：

NSTimer * timer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(timerRun) userInfo:nil repeats:YES];

开启定时器：

[timer setFireDate:[NSDate distantPast]];

关闭定时器：

[timer setFireDate:[NSDate distantFuture]];

摧毁定时器：

[timer invalidate];

timer = nil;

7 秒数—>时分秒

//转换成时分秒

- (NSString *)timeFormatted:(int)totalSeconds

{

int seconds = totalSeconds % 60;

int minutes = (totalSeconds / 60) % 60;

int hours = totalSeconds / 3600;

return [NSString stringWithFormat:@"%02d:%02d:%02d",hours, minutes, seconds];

}

8 距离当前时间N秒的时间值

//转换成当前时刻

- (NSString *)timeFormatted:(int)totalSeconds

{

NSDate  *date = [NSDate dateWithTimeIntervalSince1970:totalSeconds];

NSTimeZone *zone = [NSTimeZone systemTimeZone];

NSInteger interval = [zone secondsFromGMTForDate: date];

NSDate *localeDate = [date  dateByAddingTimeInterval: interval];

NSLog(@"enddate=%@",localeDate);

}

9 加载gif图

1，创建YYAnimatedImageView对象

YYAnimatedImageView *imageView=[YYAnimatedImageView new];

（1）直接通过url加载：

NSURL *path = [[NSBundle mainBundle]URLForResource:@"guidegif" withExtension:@"gif"];

imageView.yy_imageURL = path;

（2）通过YYImage加载：

NSURL *path = [[NSBundle mainBundle]URLForResource:@"guidegif_loop" withExtension:@"gif"];

YYImage * image = [YYImage imageWithContentsOfFile:path.path];

imageView.image = image;

10 计算连续签到天数

- (NSInteger)calculateDays
{
    
    NSInteger days = 0;
    NSString *dayStr = [GetUserInfoModel getUesrInfoModel].sign_days;
//    dayStr = @"20170524,20170526,20170527,20170529,20170530,20170530";
    NSArray *array = [dayStr componentsSeparatedByString:@","];
    if (array.count>0)
    {
        //将数组中的字符串转换为时间格式
        NSMutableArray * newArr = [NSMutableArray arrayWithArray:array];
        for (int i = 0; i<newArr.count; i++)
        {
            NSString * string = newArr[i];
            NSDateFormatter * formatter = [[NSDateFormatter alloc]init];
            [formatter setDateFormat:@"YYYYMMdd"];
            NSDate * strDate = [formatter dateFromString:string];
            [newArr replaceObjectAtIndex:i withObject:strDate];
        }
        NSDate * lastDate = [newArr lastObject];
        //判断今天是否打卡
        if ([self getDaysFrom:lastDate To:[NSDate date]] != 0)
        {
            //今天未打卡
            NSDate * yesDate = [NSDate dateWithTimeInterval:-24*60*60 sinceDate:[NSDate date]];//前一天
            if ([self getDaysFrom:yesDate To:[newArr lastObject]] == 0)
            {
                days = 1;
                for (NSInteger i = newArr.count-2; i>=0; i--)
                {
                    NSDate * endDate = newArr[i+1];
                    NSDate * lastDate = newArr[i];
                    if ([self getDaysFrom:lastDate To:endDate] == 1)
                    {
                        days++;
                    }
                    else if ([self getDaysFrom:lastDate To:endDate] == 0)
                    {
                    }
                    else
                    {
                        break;
                    }
                    
                }

            }

        }
        else
        {
        //今天已打过卡
            days = 1;
            NSDate * endDate = [NSDate date];
            for (NSInteger i = newArr.count-1; i>=0; i--)
            {
                NSDate * lastDate = newArr[i];
                if ([self getDaysFrom:lastDate To:endDate] == 1)
                {
                    days++;
                }
                else if ([self getDaysFrom:lastDate To:endDate] == 0)
                {
                
                }
                else
                {
                    break;
                }
                endDate = newArr[i];

            }

        }
    }
    NSLog(@"连续打卡天数====%ld",(long)days);
    return days;
}