ios怎么获取是否开启系统通知,以及跳转到相应的App的通知设置页面，安卓的已经实现了判断是否和开启通知和跳转

// 是否开启允许通知  
            isNotificationsEnabled() {    
                // #ifdef APP-PLUS  
                if(plus.os.name == 'Android' ) {  
                    var main = plus.android.runtimeMainActivity();    
                    var pkName = main.getPackageName();    
                    var uid = main.getApplicationInfo().plusGetAttribute( "uid" );  
                    var NotificationManagerCompat = plus.android.importClass("android.support.v4.app.NotificationManagerCompat");    
                    var areNotificationsEnabled = NotificationManagerCompat.from(main).areNotificationsEnabled();  
                    // 未开通‘允许通知’权限，则弹窗提醒开通，并点击确认后，跳转到系统设置页面进行设置  
                    if (!areNotificationsEnabled) {  
                        uni.showModal({    
                            title: '提示',    
                            content: '请打开APP通知权限，否则您可能不能及时收到我们的通知消息',  
                            success(res) {    
                                if (res.confirm) {  
                                    var Intent = plus.android.importClass('android.content.Intent');  
                                    var Build = plus.android.importClass("android.os.Build");  
                                    //android 8.0引导  
                                    if(Build.VERSION.SDK_INT >=26){  
                                        var intent = new Intent('android.settings.APP_NOTIFICATION_SETTINGS');  
                                        intent.putExtra('android.provider.extra.APP_PACKAGE', pkName);    
                                    } else if(Build.VERSION.SDK_INT >=21) {  //android 5.0-7.0  
                                        var intent = new Intent('android.settings.APP_NOTIFICATION_SETTINGS');  
                                        intent.putExtra("app_package", pkName);     
                                        intent.putExtra("app_uid", uid);  
                                    } else { //(<21)其他--跳转到该应用管理的详情页  
                                        intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);    
                                        var uri = Uri.fromParts("package", mainActivity.getPackageName(), null);    
                                        intent.setData(uri);  
                                    }  
                                    // 跳转到该应用的系统通知设置页  
                                    main.startActivity(intent);    
                                }    
                            }    
                        });    
                    }  
                } else if(plus.os.name == 'iOS') {  
                    var UIApplication = plus.ios.import("UIApplication");    
                    var app = UIApplication.sharedApplication();    
                    var enabledTypes  = 0;    
                    if (app.currentUserNotificationSettings) {    
                        var settings = app.currentUserNotificationSettings();    
                        enabledTypes = settings.plusGetAttribute("types");    
                    } else {    
                        //针对低版本ios系统    
                        enabledTypes = app.enabledRemoteNotificationTypes();    
                    }    
                    plus.ios.deleteObject(app);    
                    if ( 0 == enabledTypes ) {    
                        uni.showModal({    
                            title: '提示',    
                            content: '请打开APP通知权限，否则您可能不能及时收到我们的通知消息',  
                            success: function (res) {    
                                if (res.confirm) {    
                                    var UIApplication = plus.ios.import("UIApplication");    
                                    var NSURL = plus.ios.import("NSURL");    
                                    var setting = NSURL.URLWithString("app-settings:");    
                                    var application = UIApplication.sharedApplication();    
                                    application.openURL(setting);    
                                    plus.ios.deleteObject(setting);    
                                    plus.ios.deleteObject(application);    
                                }    
                            }    
                        });    
                    }  
                }  
                // #endif  
            }