navbar_height: function () {
    var _this = this;
    let menuButtonObject = wx.getMenuButtonBoundingClientRect();
    wx.getSystemInfo({
      success: res => {
        //屏幕高度，单位px     可使用窗口高度，单位px   状态栏的高度，单位px
        if(res.screenHeight - res.windowHeight - res.statusBarHeight - 32 > 72 > 40)
        {//  处理相关逻辑
          self.globalData.isFullSucreen=true;
          console.log("是全面屏")
        }
        console.log(res);
        //导航高度
        let statusBarHeight = res.statusBarHeight,
          navTop = menuButtonObject.top,
          navHeight = statusBarHeight + menuButtonObject.height + (menuButtonObject.top - statusBarHeight) * 2;
          let systemInfo = wx.getSystemInfoSync()
          console.log(systemInfo);
          // px转换到rpx的比例
            let pxToRpxScale = 750 / systemInfo.windowWidth;
            // 状态栏的高度
            let ktxStatusHeight = systemInfo.statusBarHeight * pxToRpxScale
            // 导航栏的高度
            let navigationHeight = 44 * pxToRpxScale
            // window的宽度
            let ktxWindowWidth = systemInfo.windowWidth * pxToRpxScale
            // window的高度
            let ktxWindowHeight = systemInfo.windowHeight * pxToRpxScale 
            // 屏幕的高度
            let ktxScreentHeight = systemInfo.screenHeight * pxToRpxScale
            // 底部tabBar的高度
            let tabBarHeight = ktxScreentHeight - ktxWindowHeight


            let iosSABottom = Number(systemInfo.screenHeight - systemInfo.safeArea.bottom);
        this.globalData.navHeight = navHeight;
        this.globalData.navTop = navTop;        //navTop
        this.globalData.windowHeight = ktxWindowHeight;
        this.globalData.tabBarHeight = tabBarHeight;
        this.globalData.navigationHeight = navigationHeight;
        this.globalData.iosSABottom = iosSABottom;
        console.log("navHeight"+navHeight)
        console.log("ktxScreentHeight"+ktxScreentHeight)
        console.log("ktxWindowHeight"+ktxWindowHeight)
        console.log("ktxStatusHeight"+ktxStatusHeight)
        console.log("navigationHeight"+navigationHeight)
        console.log("tabBarHeight"+tabBarHeight)
        console.log("iosSABottom"+iosSABottom)
      },
      fail(err) {
        console.log(err);
      }
    })
    },

以上是我获取各种高度