wechatProgram-skill-微信小程序顶部导航栏模拟

模拟微信小程序顶部导航栏

在调戏微信小程序的时候，被微信“可爱”的顶部导航栏给气到的，后来还是觉得自己整一个。
下面直接上代码，磨磨唧唧最娘们。

wmxl

实现背景色可调，可渐变，标题颜色可变，返回栏可隐藏

<view class="empty_custom" style="height:{{statusBarHeight}}px;background:white;background:{{bkcolor}};"></view>
<view class="custom naviView flexRow" style="margin-top:{{statusBarHeight}}px;background:{{bkcolor}};">
  <view style="display:{{showArray?'flex':'none'}};align-items:center;color:{{fontcolor}};font-size:34rpx;" bindtap="returnbefore">
    <view class="naviArray" style="border-bottom: 7rpx solid {{fontcolor}};border-right: 7rpx solid {{fontcolor}};"></view>
    <view class="callback">返回</view>
  </view>
  
  <!-- <image class="personIcon" mode="scaleToFill" src="{{userInfo.avatarUrl}}"></image> -->
  <view class="naviText {{showArray?'titleLeft':'titleCenter'}}" style="color:{{fontcolor}}">{{title}}</view>
</view>

wxss

.flexRow{
  display: flex; 
  flex-direction: row;
  justify-content: space-between;

}
.flexColumn{
  display: flex; 
  flex-direction: column;
  justify-content: space-between;
}
.empty_custom{
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  height: 90rpx;
  background: white;
  z-index: 999;
}
.custom{
  min-height: 45px;
  width: 100%;
  align-items:center;
}
.naviView{
  justify-content: flex-start;
  background:white;
  position:relative;
}
.naviText{
  width:250rpx;
  text-align: center;
  font-size:36rpx;
  font-family:PingFang-SC-Bold;
  font-weight:bold;
  color:rgba(0,0,0,1);
}
.naviArray{
  margin-left:30rpx;
  width:20rpx;
  height:20rpx;
  vertical-align: middle;
  border-bottom: 7rpx solid white;
  border-right: 7rpx solid white;
  -webkit-transform: rotate(135deg);
  -moz-transform: rotate(135deg);
  transform: rotate(135deg);

  /* background-color:white; */
}
.titleCenter{
  flex: 1 1;
}
.callback{
  vertical-align:middle;
  display:inline-block;
}

.titleLeft{
  flex: 1 1;
  text-indent: -110rpx;
}

js

// pages/components/haedBar/headBar.js
const app = getApp();
Component({
  /**
   * 组件的属性列表
   */
  properties: {
    title: {
      type: String,
      value: ''
    },
    showArray: {
      type: Boolean,
      value:true
    },
    bkcolor:{
      type: String,
      value: 'white'
    },
    fontcolor:{
      type: String,
      value: 'black'
    }
    // bkcolor
  },
  /**
   * 组件的初始数据
   */
  data: {
    //导航栏高度
    statusBarHeight: app.globalData.statusBarHeight,
  },
  attached: function () {
  },
  /**
   * 组件的方法列表
   */
  methods: {
    returnbefore:function(){
      wx.navigateBack({
        delta: 1
      })
    }
  }
})

使用

<headBar title="xxx" showArray="{{showArray}}" bkcolor="black" fontcolor="white"/>

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