how to change uilabel text size in different iPhones

Question

Is there a way to change UILabel text size for different screen sizes?

I need the text to be bigger in I-phone 6 and 6+.

Can i do this?

Would the correct way to do this will be to check screen height and then changing the text size?

Thanks

Answer 1

    if (self.view.frame.size.width == 320){
        //iPhone 2G, 3G, 3GS, 4, 4s, 5, 5s, 5c
        label.font = UIFont(name: "....", size: 20)
    }
    else if (self.view.frame.size.width == 375){
        //iPhone 6
        label.font = UIFont(name: "....", size: 25)
    }
    else if (self.view.frame.size.width == 414){
        //iPhone 6 Plus
        label.font = UIFont(name: "....", size: 30)
    }

Answer 2

In the .pch file declare the following

#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
#define IS_RETINA ([[UIScreen mainScreen] scale] >= 2.0)
#define SCREEN_WIDTH ([[UIScreen mainScreen] bounds].size.width)
#define SCREEN_HEIGHT ([[UIScreen mainScreen] bounds].size.height)
#define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTH, SCREEN_HEIGHT))
#define SCREEN_MIN_LENGTH (MIN(SCREEN_WIDTH, SCREEN_HEIGHT))
#define IS_IPHONE_4_OR_LESS (IS_IPHONE && SCREEN_MAX_LENGTH < 568.0)
#define IS_IPHONE_5 (IS_IPHONE && SCREEN_MAX_LENGTH == 568.0)
#define IS_IPHONE_6 (IS_IPHONE && SCREEN_MAX_LENGTH == 667.0)
#define IS_IPHONE_6P (IS_IPHONE && SCREEN_MAX_LENGTH == 736.0)

Use the following where you need to implement

if (IS_IPHONE_6){
        [myLabel setFont:[UIFont fontWithName:@"FontName" size:18]];
    }
    else if (IS_IPHONE_6P){
        [myLabel setFont:[UIFont fontWithName:@"FontName" size:20]];
    }

Answer 3

There are convenience methods to determine the height of the current device from a library called Resplendent Utilities. You will first have to install the cocoa pod for this library here http://cocoapods.org/pods/ResplendentUtilities. If you can't install cocoa pods, you can simply get the needed code from the github link to this library https://github.com/Resplendent/ResplendentUtilities.

Once you have this library in your project, import this file https://github.com/Resplendent/ResplendentUtilities/blob/master/Pod/Classes/ResplendentUtilities/Code/ResplendentUtilities/Misc/Compatability/RUScreenSizeToFloatConverter.m

Once you have this file imported, init the class object of this file (RUScreenSizeToFloatConverter). You can then store the appropriateHeightForCurrentScreenHeight property of this class in a CGFloat. This property gives you the height of your current device. You can then use some conditional statements (if (appropriateHeightForCurrentScreenHeight == 736.0f) {}) to determine the size of your label text depending on the height of your device.

Answer 4

You can use size classes to configure different styles and layouts depending on the screen sizes. At the bottom of Interface Builder in your storyboard, you'll see wAny hAny. Click that and you can select the size of the device you want to configure your styles to.