How To Use Content Mode Of UI Controll IOS/Iphone

yourimageView.contentMode = UIViewContentModeCenter;
if ( yourimageView.bounds.size.width > yourimageView.size.width && 

yourimageView.bounds.size.height > yourimageView.size.height) {
   yourimageView.contentMode = UIViewContentModeScaleAspectFit;
}

typedef NS_ENUM(NSInteger, UIViewContentMode) {
UIViewContentModeScaleToFill,
UIViewContentModeScaleAspectFit,     
UIViewContentModeScaleAspectFill,    
UIViewContentModeRedraw,              

UIViewContentModeCenter,            
UIViewContentModeTop,
UIViewContentModeBottom,
UIViewContentModeLeft,
UIViewContentModeRight,
UIViewContentModeTopLeft,
UIViewContentModeTopRight,
UIViewContentModeBottomLeft,
UIViewContentModeBottomRight,
}; 

Get Date Time Interval From Today Ios/Iphone

// Right now, you can remove the seconds into the day if you want
NSDate *today = [NSDate date];

// All intervals taken from Google
NSDate *yesterday = [today dateByAddingTimeInterval: -86400.0];
NSDate *thisWeek  = [today dateByAddingTimeInterval: -604800.0];
NSDate *lastWeek  = [today dateByAddingTimeInterval: -1209600.0];

// To get the correct number of seconds in each month use NSCalendar
NSDate *thisMonth = [today dateByAddingTimeInterval: -2629743.83];
NSDate *lastMonth = [today dateByAddingTimeInterval: -5259487.66];

How To Get Curren Device Ios/Iphone

 UIDevice *deviceInfo = [UIDevice currentDevice];

 NSLog(@“Device name:  %@”, deviceInfo.name);