Add days to NSDate

for (int i = 1; i < 30; i++) {

    NSDate *newDate = [startDay.date dateByAddingTimeInterval:60*60*24*i];

    MDay *day = [[MDay alloc] init];

    day.date = newDate;

    [list addObject:day];

}

Disable Auto sleeping

[UIApplication sharedApplication].idleTimerDisabled = YES;

Hide navigation bar for navigation controller

Add this line in the view did load method

[self navigationController].navigationBarHidden = YES;

       

Download UIImage Url

NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://chart.apis.google.com/chart?cht=qr&chs=350x350&chl=nitin"]];

UIImage *myImage = [UIImage imageWithData:imageData];

NSDateFormater

-(NSString *)getDate:(NSDate *)date{

                if (!dateFormatter) {

                                dateFormatter = [[NSDateFormatter alloc] init];

                                [dateFormatter setDateFormat:@"dd-MMM-yyyy"];

//Her we give the different type of date format e.g. “dd-MM”,” dd-MMM-yyyy”,” dd-MMM-yyyy MM:HH”

                }

                return [[dateFormatter stringFromDate:date] uppercaseString];

}

Create CustomBack Button in Navigation Controller

UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"MybackBtn" style:UIBarButtonItemStylePlain target:nil action:nil];

self.navigationItem.backBarButtonItem = backButton;