The bottom picture of uniapp is not clear

With the rapid development of mobile Internet, more and more applications adopt cross-platform development to improve development efficiency and reduce development costs. As a cross-platform development framework, Uniapp has received widespread attention and application. However, you may encounter some problems when actually using Uniapp to develop applications. One of them is that the bottom image is blurry.

In Uniapp, developers can use the input-plus component to implement the bottom navigation bar. This component uses a combination of pictures and text to implement the bottom navigation bar. However, when using pictures, you will find that the bottom picture is not clear enough and appears blurry. This will not only affect the user's visual experience, but also reduce the quality of the application.

So, why is the bottom picture blurry? This is mainly due to differences in screen resolution and pixel density. On different screens, the pixel display size of the same picture is different. For example, for a 600600 pixel picture, on a screen with a resolution of 10801920, the display size of each pixel will become 1.8 pixels, while on a screen with a resolution of 720*1280 On the screen, the size of each pixel displayed will become 1.2 pixels. Therefore, on a screen with a higher resolution and a larger pixel density, the same picture will appear smaller in size, resulting in a blurry effect.

However, it is not difficult to solve this problem. In fact, just provide multiple images with different resolutions and pixel densities. Uniapp provides a res folder to store the application's resource files. We can put images with different pixel densities in different resolution folders (for example: /res/image@1x, /res/image@2x, /res/image@3x), and then reference the corresponding images in the code That’s it. Uniapp will automatically select appropriate pictures to display based on the pixel density of the current device to achieve the best display effect.

In addition, you can also specify the width and height of the image in the style to achieve a clear display effect. In order to avoid being stretched or deformed when using images, you can use the preserve-3d attribute to control the width and height ratio of the element to keep the proportions of the image unchanged.

In short, the key to solving the problem of blurry images at the bottom of Uniapp is to provide images with different pixel densities, and to correctly reference and set the size of the images in the code. For developers, it is necessary to consider the pixel density of different devices at the early stage of the project to improve the quality of the application and the user experience.

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