How to not display the back button of the navigation bar in uniapp

If you are using Uniapp Framework to develop mobile applications, you may have encountered a problem: How to hide the back button in the navigation bar at the top of the page?

In Uniapp, a navigation bar is automatically added to every page by default. This navigation bar contains some basic controls, such as a back button and a title. While these controls are useful for user navigation, sometimes you may want to hide them to create a custom navigation bar or to meet other design needs.

In this article, we will introduce some methods to hide the back button of the page navigation bar in Uniapp.

Method 1: Custom navigation bar within the page

The first method is to create a custom navigation bar within the page. The benefit of this approach is that you have complete control over the appearance and functionality of the navigation bar. To use this method, you need to add a custom navigation bar within the template tag of the page, and then format it in a style file.

Here is a simple sample code:

<template>
    <view class="custom-navbar">
        <view class="title">{{title}}</view>
    </view>
</template>

<style>
.custom-navbar {
    height: 44px;
    background-color: #fff;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
    padding: 0 15px;
}

.title {
    flex: 1;
    font-size: 16px;
    text-align: center;
    color: #333;
}
</style>

In this example, we create a custom navigation bar named custom-navbar, which contains a title and its appearance using CSS styles. You can modify this code according to your needs.

To use this custom navigation bar in a page, you only need to add a title attribute to the script tag of the page:

export default {
    data() {
        return {
            title: '自定义导航栏'
        }
    }
}

The disadvantage of this approach is that you have to manually handle page navigation functions (such as back buttons and page jumps). But if you just need a simple page navigation, this method is a good choice.

Method 2: Globally hide the back button in App.vue

The second method is to globally hide the back button for all pages. This approach is useful if you want the navigation bar to look the same for all pages, or if you only want to hide the navigation bar's back button at a certain stage of your application.

To use this method, you need to add the following code to your App.vue file:

<template>
    <view class="app">
        <navigation-bar :left-button="null"></navigation-bar>
        <!-- 这里是应用程序的其他内容 -->
    </view>
</template>

<script>
export default {
    onLaunch: function() {
        // 应用程序启动时执行的代码
    }
}
</script>

In this example, we use < navigation-bar> tag to create a navigation bar. But we set its left button to null, which will completely remove the navigation bar's back button.

The advantage of this approach is that the back button can be easily hidden globally. But the disadvantage is that you have to handle the page navigation function manually, and if you need to display the back button on some pages, you may need to use a custom navigation bar as described in Method 1.

Method 3: Hide the back button on the page

The third method is to hide the back button on a single page. This method is useful if you only need to hide the back button on one or a few pages of your application.

To use this method, you need to add the following code in the page's onLoad method:

export default {
    onLoad: function() {
        uni.hideBackButton()
    },
    onUnload: function() {
        uni.showBackButton()
    }
}

In this example, we add the following code in the page's onLoadThe uni.hideBackButton() method is called in the method to hide the back button of the navigation bar. When the user returns from this page, we need to make sure the back button reappears. Therefore, in the onUnload method of the page, we call uni.showBackButton() to redisplay the back button.

The benefit of this approach is that you can hide and show the back button when needed, and it can be adapted to different page designs very easily. But the disadvantage is that you have to manually handle showing and hiding the back button in each page.

Conclusion

There are many ways to hide the back button of the page navigation bar in Uniapp. Whether you're creating a custom navigation bar, hiding the back button globally, or hiding the back button on a certain page, you can choose the method that works best for you based on your application needs.

No matter which method you choose, you should remember that the navigation bar is a key component for users to navigate your application. Therefore, if you choose to hide the back button, make sure the navigation bar is still accessible to users.

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