demo_05 自定义导航栏组件及小程序适配

img:

 关于小程序导航栏高度计算：

nvarbar 组件代码：

<template>

    <view class="navbar">

        <!-- 整体fixed -->

        <!-- 状态栏：20px + 导航栏 45px = 65px  45px暂时的，后面动态获取 -->

        <view class="navbar-fixed">

            <!-- 状态栏 不同设备高度不一样，动态获取 -->

            <view :style="{height: statusBarHeight + 'px'}"></view>

            <!-- 自定义导航栏 -->

            <view class="navbar-content" :style="{height:navBarHeight + 'px', windowWidth + 'px'}">

                <!-- 搜索框 -->

                <view class="navbar-search">

                    <view class="navbar-search_icon"></view>

                    <view class="navbar-search_text">uni-app、vue、html</view>

                </view>

            </view>

        </view>

        <!-- 占位符 -->

        <view :style="{height: navBarHeight + 'px'}"></view>

    </view>

</template>

<script>

    export default {

        data() {

            return {

                statusBarHeight: 20,

                navBarHeight: 45,

                windowWidth: 375

            };

        },

        created() {

            // 获取手机系统信息

            const info = uni.getSystemInfoSync()

            this.statusBarHeight = info.statusBarHeight;

            this.windowWidth = info.windowWidth;

            // 获取小程序 左侧胶囊位置信息

            // #ifndef APP-PLUS || H5 || MP-ALIPAY

            const menuButtonInfo = uni.getMenuButtonBoundingClientRect()

            // bottom: 56 height: 32 left: 278 right: 365 top: 24  87

            // （胶囊底部高度 - 状态栏高度） + （胶囊顶部高度 - 状态栏高度） = 导航栏高度

            this.navBarHeight = (menuButtonInfo.bottom - info.statusBarHeight) + (menuButtonInfo.top - info.statusBarHeight)

            this.windowWidth = menuButtonInfo.left

            // #endif

        }

    }

</script>

<style lang="scss">

    .navbar-fixed {

         100%;

        background-color: $mk-base-color;

        position: fixed;

        top: 0;

        left: 0;

        z-index: 99;

        .navbar-content {

            display: flex;

            justify-content: center;

            align-items: center;

            height: 45px; // 暂时的,后面动态获取

            padding: 0 15px;

            box-sizing: border-box;

            .navbar-search {

                display: flex;

                align-items: center;

                 100%;

                height: 30px;

                background-color: #fff;

                border-radius: 30px;

                padding: 0 15px;

                .navbar-search_icon {

                     10px;

                    height: 10px;

                    border: 1px solid red;

                    margin-right: 10px;

                }

                .navbar-search_text {

                    font-size: 12px;

                    color: #999;

                }

            }

        }

    }

</style>