What happens when the keyboard does not bounce back when switching between uniapp pages?

When using uniapp for mobile development, you may encounter a situation where the keyboard does not rebound after switching pages. This situation is very inconvenient for users, so we need to solve it. Let’s analyze the causes and solutions to this problem step by step.

Cause of the problem

Let’s first take a look at why the keyboard does not rebound. In uniapp, when switching pages, the focused element of the current page (usually the input box) may not be successfully defocused, resulting in the keyboard not being retracted. This is generally caused by us not properly operating the defocus operation of the focused element when switching pages.

Solution

With the cause of the problem, we can start to solve it. To solve this problem, there are two aspects that need to be paid attention to: the processing of focused elements and the operation when switching pages.

1. Processing of focused elements

We need to manually trigger the defocus operation of the focused element when the page is about to leave, so that the keyboard can rebound. In order to do this, we can use the Vue life cycle function beforeRouteLeave() provided by uniapp. This function will be triggered before the page is about to leave. We can perform the defocus operation in this function. The code is as follows:

beforeRouteLeave(to, from, next) {
    uni.hideKeyboard(); // 失焦操作，收起键盘
    next();
}

In this way, we can successfully close the keyboard when the page switches.

2. Operations when switching pages

When switching pages, we need to pay attention to the switching method. It is recommended to use the navigateTo and redirectTo methods provided by uniapp. These two methods can ensure that the focused element of the current page is out of focus and will not retain the status information of the current page, thus avoiding some potential problems. Using the switchTab method provided by uniapp will not trigger page switching and will not call the beforeRouteLeave function.

Summary

When using uniapp for mobile development, we need to pay attention to the problem of keyboard not rebounding caused by page switching. The root cause of this problem is that the focused element was not successfully defocused, so we need to manually trigger the defocused operation of the focused element when the page switches. At the same time, we should follow the development specifications of uniapp and use the page switching method correctly. This can avoid many potential problems and improve the application experience.

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