首先需要一个js的sdk：App权限判断和提示 - DCloud 插件市场

下载下来，引入里面的  permission.js

示例代码：

<script>
	import { requestAndroidPermission } from './sdk/permission.js'
	export default {
        onLaunch(e) {
			const getMutiPermission = async () => {
					await that.requestAndroidPermission('android.permission.CAMERA')
					await that.requestAndroidPermission('android.permission.READ_EXTERNAL_STORAGE')
					await that.requestAndroidPermission('android.permission.WRITE_EXTERNAL_STORAGE')
				}
				getMutiPermission()
		},
        methods:{
            async requestAndroidPermission(permisionID) {
				var result = await requestAndroidPermission(permisionID)
			}
        }
    }
</script>

确保把这个打开：