How to customize the navigation bar in uniapp

With the rapid development of mobile Internet, mobile application development has become more and more important. UniApp is an open source framework provided for multi-platform development, which allows you to develop Android, iOS and web applications simultaneously. One of the main features is that it allows you to easily customize the navigation bar to fit your application design style. In this article, we will introduce how to customize the navigation bar in UniApp.

UniApp allows us to create custom navigation bars through Vue’s componentization technology. In UniApp, every page has a default navigation bar. However, this navigation bar may not meet our needs and we need to customize it. Here are some ways to implement a custom navigation bar.

Method 1: Use the uniNavBar component

uni-app provides a component called uniNavBar, which can be used to quickly create a navigation bar. Before using the uniNavBar component, we need to follow the instructions in the uni-app official documentation to import the uni-icons icon library and add it to the page. Next, we can customize the navigation bar through the following steps:

1. Introduce the uniNavBar component into the page

<template>
  <view>
    <uni-nav-bar></uni-nav-bar>
  </view>
</template>

<script>
export default {
  methods: {
    navigateBack() {
      uni.navigateBack();
    },
  },
};
</script>

2. InstyleAdd a custom style for the uniNavBar component in the

<style>
.uni-nav-bar {
  background-color: #000;
  color: #fff;
}
.uni-nav-bar__title {
  font-size: 18px;
  font-weight: bold;
}
</style>

Method 2: Use a custom navigation bar

If you want to completely To control the style and behavior of the navigation bar, you can use a custom navigation bar. This method is more flexible than using the uniNavBar component, but it is also more complex. The following are the steps to create a custom navigation bar:

1. Create a view element in the page and add the style of the navigation bar to it

<template>
  <view>
    <view>
      <img  class="nav-bar__arrow lazy" src="/static/imghwm/default1.png" data-src="/static/uview/example/arrow-left.png" alt="How to customize the navigation bar in uniapp" >
      <view>{{ title }}</view>
    </view>
  </view>
</template>

<style>
.nav-bar {
  height: 44px;
  background-color: #000;
  color: #fff;
  font-size: 16px;
  text-align: center;
}

.nav-bar__left {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.nav-bar__arrow {
  width: 12px;
  height: 20px;
  margin-right: 5px;
}

.nav-bar__back {
  font-size: 16px;
  font-weight: bold;
}
</style>

2. Define the title attribute and navigateBack method in the page script

<script>
export default {
  data() {
    return {
      title: &#39;自定义导航栏&#39;,
    };
  },
  methods: {
    navigateBack() {
      uni.navigateBack();
    },
  },
};
</script>

Summary

UniApp allows us to easily customize navigation bar to fit our application design style. We can use the uniNavBar component to quickly create a navigation bar, or use a custom navigation bar to fully control the style and behavior of the navigation bar. Either way, it helps us create a unique application navigation bar.

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