iOS 判斷 App 是否開啟推送通知權限的標準 API：enabledRemoteNotificationTypes

標準檢查代碼

UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
if (types == UIRemoteNotificationTypeNone) {
    // 用戶未授權任何推送類型（彈窗、聲音、角標）
    NSLog(@"推送通知權限未開啟");
} else {
    // 權限已開啟，可檢查具體類型
    BOOL hasAlert = types & UIRemoteNotificationTypeAlert;
    BOOL hasSound = types & UIRemoteNotificationTypeSound;
    BOOL hasBadge = types & UIRemoteNotificationTypeBadge;
}

iOS 10+ 現代 API (UserNotifications 框架)

#import 

[[UNUserNotificationCenter currentNotificationCenter] getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings *settings) {
    switch (settings.authorizationStatus) {
        case UNAuthorizationStatusAuthorized:
            NSLog(@"已授權");
            break;
        case UNAuthorizationStatusDenied:
            NSLog(@"用戶拒絕");
            break;
        case UNAuthorizationStatusNotDetermined:
            NSLog(@"未詢問");
            break;
        case UNAuthorizationStatusProvisional:
        case UNAuthorizationStatusEphemeral:
            // 特殊臨時授權
            break;
    }
    // 具體類型
    BOOL hasAlert = settings.alertSetting == UNNotificationSettingEnabled;
    BOOL hasSound = settings.soundSetting == UNNotificationSettingEnabled;
    BOOL hasBadge = settings.badgeSetting == UNNotificationSettingEnabled;
}];

Swift 版本

UNUserNotificationCenter.current().getNotificationSettings { settings in
    switch settings.authorizationStatus {
    case .authorized: print("已授權")
    case .denied: print("已拒絕")
    case .notDetermined: print("未詢問")
    @unknown default: break
    }
    // 彈窗/聲音/角標單獨檢查
    let hasAlert = settings.alertSetting == .enabled
}

關鍵差異

最佳實踐

• 新項目**直接使用 UserNotifications 框架**，棄用舊 API。
• 異步回調中更新 UI/邏輯，避免主線程阻塞。
• 若需引導用戶開啟權限，提供「去設置」按鈕跳轉 UIApplicationOpenSettingsURLString。