When you develop an iOS app use swift, you can make the UI components fixed size. But iOS devices have different screen sizes, so the fixed size UI components will render differently on different iOS devices. Even when you change the same iOS device’s orientation from portrait to landscape, the fixed size UI design will […]
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When you use UIKit.UIButton class’s setImage method to set swift button’s icon image, if the image is not icon format, it will display a purely blue color rectangle instead of the image. You can fix this error by converting the image to an icon format image. But you can also fix this error by setting
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In the previous article ( in this article’s reference section ), we have learned how to create a swift button with UIButton class and how to add click event process function to it, we have also known how to set the swift button’s background color and how to create a different type of swift button.
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We have learned how to add a button click event process function in the article iOS Add Click Event To UIButton Swift Example. In that article, if you want to process multiple button click events, you should create multiple IBAction functions to process. But sometimes, for code simplicity, you need to use only one IBAction
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UIKit.UIButton class is used to create a button in the iOS swift app programmatically. When you use this class to create a button object, you should provide a type parameter to UIButton class’s initializer method to tell swift which kind of button that you want to create. We only create a default system button in
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Swift UIKit.UIFont class is used to specify the label text font. You can use a system built-in text font, or you can customize the text font by providing the font name and font size. This example will tell you how to specify system font or provide customize text font to swift label component. It will
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UIKit.UILabel class is used to create a label in iOS swift source code programmatically. You can change label text, label text color, label background color, label border width, label border color by setting it’s properties. You can also change the label text alignment by change the UILabel object’s textAlignment property value t0 NSTextAlignment.left, NSTextAlignment.center or NSTextAlignment.right.
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This example will show you how to implement animation for the UIView object in swift. It will tell you how to implement the below three swift UIView animations. The first uiview animation moves a red view from the screen top left to the bottom right use swift code. It is a spring animation. The second
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A swift view can have subviews, the subview can have it’s own subview also. So you can implement a view tree in swift, all the subviews are saved in a subview array, later added subview will override previously added subview. This article will show you an example to tell you how to add, insert, move
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When I develop an iOS example application use swift, I meet a strange situation. When I click the run button to start my iOS example, it runs well. My example iOS app has a button, so I click it to trigger a Touch Up Inside event for this button, but this action makes my iOS
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