HarmonyOS 鸿蒙Next 如何在我的应用中打开系统设置页面授予应用权限

文档参考：[华为开发者联盟](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V2/accesstoken-guidelines-0000001493744016-V2#ZH-CN_TOPIC_0000001574088333__%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6%E6%9D%83%E9%99%90%E5%A3%B0%E6%98%8E)

//Index

```javascript
import { abilityAccessCtrl, common, Permissions, Want } from '[@kit](/user/kit).AbilityKit';
import { BusinessError } from '[@kit](/user/kit).BasicServicesKit';

const permissions: Array<Permissions> = ["ohos.permission.ACTIVITY_MOTION","ohos.permission.CAMERA"];
function reqPermissionsFromUser(permissions: Array<Permissions>, context: common.UIAbilityContext): void {
  let atManager: abilityAccessCtrl.AtManager = abilityAccessCtrl.createAtManager();
  atManager.requestPermissionsFromUser(context, permissions).then((data) => {
    let grantStatus: Array<number> = data.authResults;
    let length: number = grantStatus.length;
    for (let i = 0; i < length; i++) {
      if (grantStatus[i] === 0) {
        // 用户授权，可以继续访问目标操作
      } else {
        // 用户拒绝授权，提示用户必须授权才能访问当前页面的功能，并引导用户到系统设置中打开相应的权限
        openPermissionsInSystemSettings(context)
        return;
      }
    }
    // 授权成功
  }).catch((err: BusinessError) => {
    console.error(`Failed to request permissions from user. Code is ${err.code}, message is ${err.message}`);
  })
}

function openPermissionsInSystemSettings(context: common.UIAbilityContext): void {
  let wantInfo: Want = {
    bundleName: 'com.huawei.hmos.settings',
    abilityName: 'com.huawei.hmos.settings.MainAbility',
    uri: 'application_info_entry',
    parameters: {
      settingsParamBundleName: 'com.example.perssions'
    }
  }
  context.startAbility(wantInfo).then(() => {
  }).catch((error: Error) => {
  })
}

[@Entry](/user/Entry)
[@Component](/user/Component)
struct Index {
  [@State](/user/State) message: string = 'Hello World';

  aboutToAppear() {
    const context: common.UIAbilityContext = getContext(this) as common.UIAbilityContext;
    reqPermissionsFromUser(permissions, context);
  }

  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
      }
      .width('100%')
    }
    .height('100%')
  }
}

"requestPermissions":[
{
  "name" : "ohos.permission.ACTIVITY_MOTION",
  "reason": "$string:EntryAbility_label",
  "usedScene": {
    "abilities": [
      "EntryAbility"
    ],
  "when":"inuse"
  }
},
{
  "name" : "ohos.permission.CAMERA",
  "reason": "$string:EntryAbility_desc",
  "usedScene": {
    "abilities": [
      "EntryAbility"
    ],
    "when":"inuse"
  }
},
]

import { common } from '[@kit](/user/kit).AbilityKit';

[@Entry](/user/Entry)
[@Component](/user/Component)
struct Index3 {
  [@State](/user/State) message: string = 'Hello World';
  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
          .onClick(() =>{
            let context = getContext(this) as common.UIAbilityContext;
            context.startAbility({
              bundleName: 'com.huawei.hmos.settings',
              abilityName: 'com.huawei.hmos.settings.MainAbility',// com.huawei.hmos.settings.AppInfoAbility
              uri:'application_info_entry',
              parameters: {
                pushParams: 'com.huawei.hmsapp.appgallery' // 传入应用市场的包名
              }
            });
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}

//appId是AGC网站上生成的，可以在AGC上查看对应的appId
import Want from '[@ohos](/user/ohos).app.ability.Want';
import common from '[@ohos](/user/ohos).app.ability.common';

[@Entry](/user/Entry)
[@Component](/user/Component)
struct Page1 {
  [@State](/user/State) appId: string = '1198478733497871104';
  controller: TextInputController = new TextInputController();
  build() {
    Row() {
      Column() {
        TextInput({ text: this.appId, placeholder: '请输入应用的appId', controller: this.controller })
          .width('90%')
          .onChange((value: string) => {
            this.appId = value
          })

        Button('点击跳转到鸿蒙版应用市场详情页面')
          .margin({top: 50})
          .onClick(() =>{
            const want: Want = {
              uri: store://appgallery.huawei.com/app/detail?id=C${this.appId}
            };
            const context = getContext(this) as common.UIAbilityContext;
            context.startAbility(want).then(() =>{
              //拉起成功
            }).catch(() =>{
              // 拉起失败
            });
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}