如何使用尺寸类在Xcode中设置UIImageView对象

Question

I am working on an universal application, and in that I am using 'size classes' for setting images in UIImageView. I have tried it but it is looking same in size on iPhone and iPad.

Answer 1

you just have to give the your UIImageview size of your UIView and than set its ContentMode to AspectFit like these...i hope it helps..

imgView=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[imgView setContentMode:UIViewContentModeScaleAspectFit];
[self.view addSubview:imgView];

Answer 2

First you need to switch to different size classes for iPhone and iPad

add an imageView in Size Class any any so that it is available in any size classes

use width compact and height regular Size Class for iPhone

use width regular and height regular for iPad

In both size classes add constraints leading, trailing, top, bottom .

These constraints are for background image. For others you will have to change it as per your requirement.

I hope you already have different images for iPhone and iPad including retina images.

Answer 3

• Set size class with respect to device and oritentation

• You can take help to change size classes from the following link Size class base on different devices How change size classes

• Set constraints for leading, trailing, top and bottom constraint you can also set height and width constraints based on your requirement.

• Share your email i will email you a demo application for this using your image