This blog will explain creating a responsive user interface during cross-platform app development.
The framework CSS is used for adaptive web design to create a responsive user interface. The platform changes, introducing different screen sizes on which your HTML is run. HTML code cannot be adapted to all the different screen sizes of mobile devices. Responsive design is helpful when you do not know what size device the application will run on. “responsive design” means that HTML will look the same on all mobile OS platforms.
While creating HTML UIs for Cross-platform applications, it is important to consider the following points. When creating CSS classes, one should also adhere to the guidelines below.
Don’t Hardcode Sizes for HTML Elements
Never hard code the height and width of any HTML element. Imagine that you are developing an application to fit a 360×480 pixel device. You deploy the CSS on the same device with a width of 360px. When you deploy the application to a device with a different display size, your HTML elements will not fit on the screen, and your UX will be ruined.
Create a CSS class instead, in which you specify the size of an HTML element in percentage. This class can be adjusted to the size required for the element. If I want to create an HTML element to fill the entire device width, I can set the width to 100%. This will allow the runtime to calculate the 100% available screen space and provide the same experience across all devices.
Take control of your margins
Set margins as percentages rather than pixels. It can collapse HTML components’ responsive height and width, causing the element to go outside the screen bounds. Consider the case where you create an HTML element with a width equal to the screen size and add pixel margins of 5 pixels. The element will move out of bounds, and the user interface must scroll.
Set the size and margins to 100 to fit it on the screen.
Make images flexible
Make images more compatible with screen sizes when adding them to an HTML UI. Using a hard-coded image size can have a different feel depending on the screen size. Add a CSS class to the image to ensure the image looks and feels the same. It is easier to fit the image on the screen. CSS should specify the height and the width of an image in percentage. The image will be more flexible if the screen size or orientation changes.
Set font according to screen size
The font size changes when the pixel density on a mobile device changes. Fonts that look perfect on some screens can appear very small on other screens. Set the font size in EMS. If you target smaller screens for your applications, give the minimum font size in EMS. As an example, the CSS class for a label would be:
.label class
min-font-size: 10px; font-size: 9 %;
Use of Media Queries
Media queries are useful when providing different responses based on the screen size. Imagine an application that is available on both tablets and smartphones. It needs to have a different interface for the tabs and the phones. Media queries can be used to handle UI in such situations. Media queries work like if/else conditions and tell the browser how to render UI for different screen sizes.
