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Table of Contents
導航彈框
騰訊
app url
web url
百度
Home Web Front-end uni-app Use uniapp to develop a simple map navigation

Use uniapp to develop a simple map navigation

Jun 09, 2022 pm 07:46 PM
uni-app

How to use uniapp to develop a simple map navigation? This article will provide you with an idea for making a simple map. I hope it will be helpful to you!

Use uniapp to develop a simple map navigation

Let’s take a look at the renderings first

Use uniapp to develop a simple map navigation

Use uniapp to develop a simple map navigation

##Simple map

In the map in Figure 1, you can see that point a is connected to point b, basic information and basic controls (zoom in, zoom out, return to a specified point). Next, we will proceed step by step explain.

Required configuration

needs to be in

app module in manifest.json Configure the map and add the key of the relevant map. If not, you can apply on the relevant developer platform

Use uniapp to develop a simple map navigation

After configuring this part, you can start using the map Component

Map marker points

To create marker points in uniapp map, you need to use an attribute

markers .

Let’s first take a look at the common attributes of

markers

NameDescription TypeRequired##idlatitudelongitude##iconPathDisplayed iconstringfalsecalloutCustomize the bubble box above the mark pointObjectfalselabelAdd a label to the marked pointObjectfalseFor more information, please check:
Mark point id number true
latitude number true
Longitude number true
https://uniapp.dcloud.io/component/map.html

After understanding these, we can use

markers
The attribute creates marker points.

markersThe attribute is of array type, so marker points should be created like this

    this.covers = [ 
        {
            id: 1,
            latitude: 34.7486,
            longitude: 113.6709,
            iconPath: '../../static/shop.png',
            title: "目的地"
        }
    ];
If you want to add more marker points, you can continue to add them in the array. object

,

Each object

represents a marking point

mount

    <map :markers="covers"></map>

Coordinate connection

If we want to connect our coordinates, we need to use the polyline

attribute.

Let’s take a look at the common attributes of polyline

##NameDescription##pointsArray of latitude and longitudeArraytrue colorThe color of the linestringfalsewidthLine widthNumberfalseiconPathDisplayed iconstring falsearrowLineLine with arrowBooleanfalsecolorListRainbow displayArrayfalse

平臺差異請查看

https://uniapp.dcloud.io/component/map.html#app平臺地圖服務商差異

這里我們要注意 兩個坑,作者親踩

  • polyline 屬性是一個數(shù)組

    polyline 之所以是一個數(shù)組是因為他可以同時創(chuàng)建多條線并且連線,每條線還可以有著不同的顏色、箭頭、圖標等。

  • points 也是一個數(shù)組

    points之所以是一個數(shù)組是因為他要確定某一條線上的每一個點,且每個點都應該由經(jīng)緯度構成

所以 polyline 的正確寫法應該是這樣的

    // 連線
    this.polyline = [
        // 第一條線
        {
            // 每個點的經(jīng)緯度
            points: [{34.7486, 113.6709}, {28.7486, 113.6709}],
            // 顏色
            color: "#000",
            // 寬度
            width: 10
        }
    ]

如果想添加第二條線僅僅只需要在 polyline 中在添加一個 Object。掛載

    <map :polyline="polyline"></map>

放大縮小

map 的放大縮依賴于 scale 屬性 所以只需要動態(tài)改變 scale 屬性的值就可以了。 但這里要注意 scale 的取值范圍為 3~20,數(shù)字類型

這就是放大縮小功能的依賴

Use uniapp to develop a simple map navigation

回到指定位置

想要地圖回到指定的位置也非常簡單,只需要使用 uni.createMapContext() 方法創(chuàng)建一個 mapContent 對象 在使用 附帶的 moveToLocatio 方法便可讓地圖回到指定的位置。

// 回到定位點
goBackToLocation() {
   uni.createMapContext("map").moveToLocation({34.7486, 113.6709});
},

Use uniapp to develop a simple map navigation

導航彈框

圖二中的地圖應用選擇彈框則是使用了 h5Plus

nativeUI.actionSheet 方法 創(chuàng)建了彈框

runtime.openURL 方法 打開了 導航軟件 或 h5 頁面導航

nativeUI情請查看

https://www.html5plus.org/doc/zh_cn/nativeui.html

runtime情請查看

https://www.html5plus.org/doc/zh_cn/runtime.html

    // 導航 會打開導航菜單供用戶選擇
    openNavigation(longitude, latitude, name) {
        let url = ""; // app url
        let webUrl = ""; // web url 用來為用戶未安裝導航軟件時打開瀏覽器所使用url
        plus.nativeUI.actionSheet({ //選擇菜單
            title: "選擇地圖應用",
            cancel: "取消",
            buttons: [{title: "高德地圖"}] // 可選的地圖類型
        }, (e)=> {
                // 判斷用戶選擇的地圖
            switch (e.index) {
                //下面是拼接url,不同系統(tǒng)以及不同地圖都有不同的拼接字段
                case 1:
                    // 安卓
                    if(plus.os.name == "Android") {
                        url = `androidamap://viewMap?sourceApplication=appname&poiname=${name}&lat=${latitude}&lon=${longitude}&dev=0`;
                    }else {
                        url = `iosamap://viewMap?sourceApplication=applicationName&poiname=${name}&lat=${latitude}&lon=${longitude}&dev=0`;
                    }
                    webUrl = `https://uri.amap.com/marker?position=${longitude},${latitude}&name=${name}&src=mypage&coordinate=gaode`
                    break;
            }
                // 如果選中
            if (url != "") {
                url = encodeURI(url);
                // 打開 app 導航 
                plus.runtime.openURL(url, (err)=>{ // 失敗回到
                    // 如果失敗則說明未安裝 直接 打開網(wǎng)頁版進行導航
                    // 畢竟用戶可能沒有安裝app但一定安裝的有瀏覽器
                    plus.runtime.openURL(webUrl);
                });
            }
    })
}

這就是我導航彈窗實現(xiàn)的邏輯了, 這里我僅僅只是用了高德地圖的選項,大家可以根據(jù)需要增加相應地圖app,其他常見的我放在下方了。

騰訊

app url

let appUrl = `qqmap://map/geocoder?coord=${latitude},${longitude}&referer=${騰訊地圖key}`

web url

let webUrl = `https://apis.map.qq.com/uri/v1/marker?marker=coord:經(jīng)度,緯度;title:名稱;addr:地址&referer=myapp`

百度

app url

let appUrl = `baidumap://map/marker?location=${latitude},${longitude}&title=${name}&coord_type=gcj02&src=andr.baidu.openAPIdemo`

web url

let webUrl = `http://api.map.baidu.com/marker?location=${latitude},${longitude}&title=${name}&content=${content}&output=html&src=webapp.baidu.openAPIdemo`

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