How to prohibit return of uniapp custom components

With the popularity of Uniapp development, more and more developers choose to use Uniapp to quickly develop small programs, H5 and other applications. Using components in Uniapp is a very common operation. Developers can use existing components or develop custom components themselves. In actual development, sometimes we want to prohibit the return operation within the component when using a custom component to achieve a better user experience. This article will introduce how to disable the return operation of uniapp custom components.

Return operation of uniapp

In Uniapp, the return operation is a very common operation, generally implemented through uni.navigateTo and uni.navigateBack. Among them, uni.navigateTo is used to jump from the current page to a page within the application, while uni.navigateBack is used to return to the previous page or multi-level pages. These two operations are performed in the life cycle function of the page. When using a custom component in a page, you can also use these two methods in the life cycle function of the component to jump and return to the page.

Implementation of prohibiting return in custom components

In actual development, we may encounter such a scenario: when using a custom component, we hope to prohibit returning to the previous page within the component operation to avoid user misoperation or destruction of interaction logic.

It is very simple to implement this function. You only need to intercept the return event in the component's life cycle function. Specifically, we need to rewrite the onBackPress life cycle function in the component, and hide various notification prompts through uni.hideToast, uni.hideLoading and other methods in the function to achieve the effect of prohibiting return. The sample code is as follows:

export default {
  methods: {
    onBackPress() {
      uni.hideToast()
      uni.hideLoading()
    }
  }
}

In actual use, we can add more operations based on specific business logic.

It should be noted that if we want to prohibit the return operation within the component, then we need to ensure that the component is in the current page and cannot be opened in a new page. Since the uni.navigateTo method will open a new page, when using a custom component, we should use methods such as uni.navigateTo or uni.redirectTo to open the page where the component is located, instead of using methods such as uni.switchTab or uni.reLaunch.

Summary

By rewriting the onBackPress life cycle function of a custom component, we can prohibit the return operation within the component, thereby avoiding user misoperation and damaging interaction logic. In actual use, we need to determine whether the return operation needs to be prohibited based on specific business needs and scenarios, and open the page where the component is located in the correct way. In the development and use of components, we need to carefully consider the event processing logic within the component to provide a better user experience.

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