【IOS相册权限】Native.js IOS相册权限获取 弹窗请求授权

优化官方推荐的uni.authorize文档中permission.js中的相册授权方法，判断是否有授权没有则弹窗请求授权。
发现很多小伙伴有这个需求，自己也在网上搜索了一番无果。
在此分享出来，方便大家开发。

// 判断相册权限是否开启 resolve()返回值可以根据需求更具体一点，在业务中拿到状态码后弹窗提示用户是否要去设置页修改权限  
function judgeIosPermissionPhotoLibrary() {  
    return new Promise((resolve, reject) => {  
        var PHAuthorizationStatus = {  
            NotDetermined: 0, // 未申请过权限  
            Restricted: 1, // 拒绝  
            Denied: 2,  // 拒绝  
            Authorized: 3, // 拥有  
            Limited: 4 // iOS 14 新增  
        };  
        if (!PHPhotoLibrary) {  
            var PHPhotoLibrary = plus.ios.import("PHPhotoLibrary");  
        }  
        var status  = PHPhotoLibrary.authorizationStatus();  
        if (status === PHAuthorizationStatus.NotDetermined) {  
            PHPhotoLibrary.requestAuthorization(() => {  
                const status = PHPhotoLibrary.authorizationStatus(); {  
                    if (status === PHAuthorizationStatus.Authorized) {  
                        plus.ios.deleteObject(PHPhotoLibrary);  
                        resolve(true)  
                    } else {  
                        plus.ios.deleteObject(PHPhotoLibrary);  
                        resolve(false)  
                    }  
                }  
            })  
        } else if (status === PHAuthorizationStatus.Authorized) {  
            plus.ios.deleteObject(PHPhotoLibrary);  
            resolve(true)  
        } else {  
            if (status === PHAuthorizationStatus.Denied || status === PHAuthorizationStatus.Restricted) {  
                console.log("您已拒绝访问相册权限，请在设置中手动开启。");   
            } else if (status === PHAuthorizationStatus.Limited) {  
                console.log("相册权限为有限访问。");   
            }  
            plus.ios.deleteObject(PHPhotoLibrary);  
            resolve(false)  
        }     
    })  

}