What should I do if nvue setting px in uniapp is invalid?

With the continuous development of cross-platform technology, Uni-app, as a framework for developing cross-platform applications based on Vue.js, has attracted the attention and love of more and more developers. Among them, nvue, as a component widely used in APP development, has higher performance and better user experience. At the same time, it also supports the use of unit presets such as px and rpx to control the size of elements when designing layouts. However, some developers have reported that when using the px unit preset, there may be a problem that the element size cannot be preset. So, what is the reason behind this phenomenon? How to avoid and solve this problem?

1. Analysis of the causes of the problem

Before analyzing the problem, we first need to understand some design differences between nvue and weex. In nvue, although the same 750 design size as previous weex is used by default, it does not support all CSS properties supported by weex. These include specific properties of CSS3, such as gradient effects, flexible layout, etc. In addition, when designing elements such as length, width, and height, you also need to use preset size units such as px and rpx.

But we found that in some cases, when we use size units such as px, we will find that nvue cannot recognize such unit presets and cannot change the size of the element. In fact, this is the source of the problem.

2. Methods to avoid problems

In order to avoid the occurrence of such problems, there are several methods to pay attention to when writing:

1. Use rpx units instead Not px

Since nvue has problems with the preset recognition of px units, we can use rpx instead of px. Because in nvue, rpx is supported and can ensure consistency between different models.

2. Use the scorll-view component

In nvue, the scorll-view component has better performance than other components and supports a higher degree of freedom adjustment. Therefore, when designing a layout, you can achieve a controllable layout effect by placing elements in scorll-view and enabling scroll bars when needed.

3. Use unit calculation methods

In view of nvue’s preset problem with px units, some calculation methods can also be used to avoid this situation. For example, you can perform some conversion processing through js code to convert the px unit preset so that it can be recognized and used in nvue.

Conclusion:

In short, when using nvue components, we need to pay attention to the problems of this size unit, and choose different layout methods and size units according to the actual situation to achieve better results application experience and effects.

Of course, when we encounter problems, we can also actively participate in community exchanges and discussions, share results and solve problems encountered. This is also the cultural atmosphere respected by the open source community.

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