How to modify the navigation bar in uniapp

With the popularity of mobile applications, the navigation bar has also become an essential component in mobile applications. As a cross-platform development framework, Uniapp has attracted more and more attention from developers in mobile application development. Modifying the navigation bar is also one of the commonly used techniques in Uniapp development. This article will introduce how to modify the navigation bar in Uniapp.

1. The composition of the navigation bar in Uniapp

In Uniapp, the navigation bar mainly consists of the following two parts:

1. Status bar: The status bar is the top of the mobile phone screen An area on the end, usually used to display notifications, power, time and other information.

2. Navigation bar: The navigation bar is an area below the status bar, which usually contains the application title, return button, menu, etc.

2. Modify the status bar

In Uniapp, we can modify the style of the navigation bar and status bar by modifying the manifest.json file of the page. The following is a simple example:

{
  "app": {
    "backgroundTextStyle": "dark",
    "backgroundColor": "#F3F3F3",
    "navigationStyle": "custom",
    "navigationBarBackgroundColor": "#ffffff",
    "navigationBarTitleText": "示例标题",
    "navigationBarTextStyle": "black",
    "enablePullDownRefresh": false,
    "onReachBottomDistance": 50
  }
}

In the above code, we modify the background color of the navigation bar through navigationBarBackgroundColor, modify the title of the navigation bar through navigationBarTitleText, and modify the font color of the navigation bar through navigationBarTextStyle. In addition, we can also customize the navigation bar by setting navigationStyle to custom to hide the native navigation bar.

If we need to modify the style of the status bar, we need to modify the "navigationBarBackgroundColor" field in the page.json file to achieve this. For example, we can set "navigationBarBackgroundColor" to "#000000" to achieve a white status bar.

3. Customize the navigation bar

In addition to modifying the styles of the navigation bar and status bar, we can also customize the navigation bar to achieve more complex effects. In Uniapp, we can use the uni navigation bar component to customize the page navigation bar. Here is a simple example:

<template>
  <view>
    <uni-nav-bar title="自定义导航栏" :bg-color="bgColor" :color="color" :back-text="backText" @click-left="onClickLeft"></uni-nav-bar>
  </view>
</template>

<script>
export default {
  data() {
    return {
      bgColor: '#ffffff',
      color: '#000000',
      backText: '返回'
    }
  },
  methods: {
    onClickLeft() {
      uni.showToast({
        title: '返回',
        icon: 'none'
      })
    }
  }
}
</script>

<style>
</style>

In the above code, we use the uni-nav-bar component to customize the navigation bar of the page. We can customize the style and functionality of the navigation bar by setting the properties of the uni-nav-bar component. For example, we can set the title of the navigation bar by setting the :title attribute, set the background color of the navigation bar by setting the :bg-color attribute, and set the font color of the navigation bar by setting the :color attribute. In addition, we can also use the @click-left attribute to monitor the click event of the navigation bar return button to implement a customized return function.

4. Summary

In Uniapp development, modifying the navigation bar is a very common operation. We can modify the style of the navigation bar and status bar by modifying the manifest.json file, or we can customize the page navigation bar by using the uni-nav-bar component. No matter which method is used, it allows us to more flexibly control the design and interaction of mobile applications and improve user experience.

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