【API 12 学习笔记】HarmonyOS 鸿蒙Next利用API 12新增的方法canOpenLink可以判断是否安装了某个APP，这里以支付宝、高德地图、知乎为例。

src/main/module.json5

{
“module”: {
“querySchemes”: [
“alipays”,
“amapuri”,
“zhihu”,
],
“name”: “entry”,
“type”: “entry”,
“description”: “$string:module_desc”,
“mainElement”: “EntryAbility”,
“deviceTypes”: [
“phone”,
“tablet”,
“2in1”
],

<span class="hljs-string"><span class="hljs-string">"deliveryWithInstall"</span></span>: <span class="hljs-literal"><span class="hljs-literal">true</span></span>,
<span class="hljs-string"><span class="hljs-string">"installationFree"</span></span>: <span class="hljs-literal"><span class="hljs-literal">false</span></span>,
<span class="hljs-string"><span class="hljs-string">"pages"</span></span>: <span class="hljs-string"><span class="hljs-string">"$profile:main_pages"</span></span>,
<span class="hljs-string"><span class="hljs-string">"abilities"</span></span>: [
  {
    <span class="hljs-string"><span class="hljs-string">"name"</span></span>: <span class="hljs-string"><span class="hljs-string">"EntryAbility"</span></span>,
    <span class="hljs-string"><span class="hljs-string">"srcEntry"</span></span>: <span class="hljs-string"><span class="hljs-string">"./ets/entryability/EntryAbility.ets"</span></span>,
    <span class="hljs-string"><span class="hljs-string">"description"</span></span>: <span class="hljs-string"><span class="hljs-string">"$string:EntryAbility_desc"</span></span>,
    <span class="hljs-string"><span class="hljs-string">"icon"</span></span>: <span class="hljs-string"><span class="hljs-string">"$media:layered_image"</span></span>,
    <span class="hljs-string"><span class="hljs-string">"label"</span></span>: <span class="hljs-string"><span class="hljs-string">"$string:EntryAbility_label"</span></span>,
    <span class="hljs-string"><span class="hljs-string">"startWindowIcon"</span></span>: <span class="hljs-string"><span class="hljs-string">"$media:startIcon"</span></span>,
    <span class="hljs-string"><span class="hljs-string">"startWindowBackground"</span></span>: <span class="hljs-string"><span class="hljs-string">"$color:start_window_background"</span></span>,
    <span class="hljs-string"><span class="hljs-string">"exported"</span></span>: <span class="hljs-literal"><span class="hljs-literal">true</span></span>,
    <span class="hljs-string"><span class="hljs-string">"skills"</span></span>: [
      {
        <span class="hljs-string"><span class="hljs-string">"entities"</span></span>: [
          <span class="hljs-string"><span class="hljs-string">"entity.system.home"</span></span>
        ],
        <span class="hljs-string"><span class="hljs-string">"actions"</span></span>: [
          <span class="hljs-string"><span class="hljs-string">"action.system.home"</span></span>
        ]
      }
    ]
  }
]
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

src/main/ets/pages/Page006.ets

import bundleManager from ‘@ohos.bundle.bundleManager’;
import { BusinessError } from ‘@ohos.base’;
import hilog from ‘@ohos.hilog’;
import { promptAction } from ‘@kit.ArkUI’;

@Entry
@Component
struct DocumentListPage {
arr: ESObject[] = [
{
appName: ‘支付宝’,
link: ‘alipays://’,
},
{
appName: ‘高德地图’,
link: ‘amapuri://’,
},
{
appName: ‘知乎’,
link: ‘zhihu://’,
},
]
checkApp(link: string, appName: string) {
try {
let data = bundleManager.canOpenLink(link);
hilog.info(0x0000, ‘testTag’, ‘canOpenLink successfully: %{public}s’, JSON.stringify(data));
if (data) {
promptAction.showToast({
message: ${appName} APP 已安装,
duration: 2000,
bottom: ‘500lpx’
});
} else {
promptAction.showToast({
message: ${appName} APP 未安装,
duration: 2000,
bottom: ‘500lpx’
});
}
} catch (err) {
if (err[‘code’] == 17700056) {
/{
“module”: {
“querySchemes”: [
“alipays”,
],/
promptAction.showToast({
message: ‘请在module.json5配置link,参考注释 querySchemes’,
duration: 2000,
bottom: ‘500lpx’
});
} else {
promptAction.showToast({
message: ‘未知异常’,
duration: 2000,
bottom: ‘500lpx’
});
}
let message = (err as BusinessError).message;
hilog.error(0x0000, ‘testTag’, ‘canOpenLink failed: %{public}s’, message);
}
}
build() {
Row() {
Column({ space: 10 }) {
ForEach(this.arr, (item: ESObject, index: number) => {
Button(检查当前手机是否安装了 ${item[<span class="hljs-string"><span class="hljs-string">'appName'</span></span>]} APP)// 添加跳转功能
.onClick(() => {
this.checkApp(item[‘link’], item[‘appName’])
})
})
}
}
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

参考：https://developer.huawei.com/consumer/cn/forum/topic/0203154118987747020?fid=0109140870620153026