working with UIMenuController

I am creating menu on longPressGesture of some view.
The code is as below.

- (void)showMenu:(UILongPressGestureRecognizer *)gestureRecognizer

{

    if ([gestureRecognizer state] == UIGestureRecognizerStateBegan) {

        

        [self becomeFirstResponder];

        /*

         Set up th menu.

         */

        UIMenuItem *menuItem1 = [[UIMenuItem alloc] initWithTitle:@"Item 1" action:@selector(item1Selected:)];

        UIMenuItem *menuItem2 = [[UIMenuItem alloc] initWithTitle:@"Item 2" action:@selector(item2Selected:)];

        UIMenuController *menuController = [UIMenuController sharedMenuController];

        [menuController setMenuItems:@[menuItem1,menuItem2]];

        

        CGPoint location = [gestureRecognizer locationInView:[gestureRecognizer view]];

        CGRect menuLocation = CGRectMake(location.x, location.y, 0, 0);

        [menuController setTargetRect:menuLocation inView:[gestureRecognizer view]];

        

        [menuController setMenuVisible:YES animated:YES];

    }

}

- (void)item1Selected:(UIMenuController *)controller

{

    NSLog("Item 1 Selected");

}

- (void)item2Selected:(UIMenuController *)controller

{

    NSLog("Item 2 Selected");

}

// UIMenuController requires that we can become first responder or it won't display

- (BOOL)canBecomeFirstResponder

{

    return YES;

}

Get color from touch point

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [[event allTouches] anyObject];
    CGPoint loc = [touch locationInView:self.view];
    self.pickedColor = [self colorOfPoint:loc];
    self.theColor.backgroundColor = self.pickedColor;
}

-(UIColor *) colorOfPoint:(CGPoint)point {
    unsigned char pixel[4] = {0};
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
    CGContextRef context = CGBitmapContextCreate(pixel, 1, 1, 8, 4, colorSpace, kCGImageAlphaPremultipliedLast);

    CGContextTranslateCTM(context, -point.x, -point.y);

    [self.view.layer renderInContext:context];

    CGContextRelease(context);
    CGColorSpaceRelease(colorSpace);
    UIColor *color = [UIColor colorWithRed:pixel[0]/255.0 green:pixel[1]/255.0 blue:pixel[2]/255.0 alpha:pixel[3]/255.0];

    return color;
}

Taking input from user via alert

UIAlertController * alert=   [UIAlertController alertControllerWithTitle:@"Text" message:@"Enter Text" preferredStyle:UIAlertControllerStyleAlert];

    UIAlertAction* ok = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault

                                               handler:^(UIAlertAction * action) {

                                                   //Do Some action here

                                                   UITextField *textField = alert.textFields.firstObject;

                                                   NSLog(@"%@",textField.text);

                                               }];

    UIAlertAction* cancel = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDefault

                                                   handler:^(UIAlertAction * action) {

                                                       [alert dismissViewControllerAnimated:YES completion:nil];

                                                   }];

    

    [alert addAction:ok];

    [alert addAction:cancel];

    

    [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {

                        textField.placeholder = @"Enter text here";

    }];

    

    [self presentViewController:alert animated:YES completion:nil];

detecting iOS, iPhone, iPad and apple watch

// detecting iOS

NSString *version = [[UIDevice currentDevice] systemVersion];

NSLog(@"Version:%@",version);

//detecting iPhone

add these line to your .h file

#define IS_IPHONE_4 (fabs((double)[[UIScreen mainScreen]bounds].size.height - (double)480) < DBL_EPSILON)

#define IS_IPHONE_5 (fabs((double)[[UIScreen mainScreen]bounds].size.height - (double)568) < DBL_EPSILON)

#define IS_IPHONE_6 (fabs((double)[[UIScreen mainScreen]bounds].size.height - (double)667) < DBL_EPSILON)

#define IS_IPHONE_6_PLUS (fabs((double)[[UIScreen mainScreen]bounds].size.height - (double)736) < DBL_EPSILON)

and use it in your .m file

if (IS_IPHONE_4)

        NSLog(@"iPhone 4");

else if (IS_IPHONE_5)

        NSLog(@"iPhone 5");

//detecting iPad

if ([UIDevice currentDevice].userInterfaceIdiom != UIUserInterfaceIdiomPad)

{

        //code for iPad

}

//detecting apple watch

add these line to your .h file

#define IS_WATCH_42 (fabs((double)self.contentFrame.size.height - (double)174) < DBL_EPSILON)

#define IS_WATCH_38 (fabs((double)self.contentFrame.size.height - (double)151) < DBL_EPSILON)

and use it in your .m file

if (IS_WATCH_42)

        NSLog(@"apple watch 42mm");

    else if (IS_WATCH_38)

        NSLog(@"apple watch 38mm");