UNUserNotificationCenter 的 requestAuthorization 返回 success:false error:nil答案

【问题标题】：UNUserNotificationCenter's requestAuthorization returns success:false error:nilUNUserNotificationCenter 的 requestAuthorization 返回 success:false error:nil
【发布时间】：2021-09-15 07:47:55
【问题描述】：

我正在运行 iOS13.3 的越狱 iPhone 6s 上使用 Linux 上的 theos 开发一个 swift 应用程序。我有一些简单的 swift UI 代码来显示一个按钮来请求本地通知权限：

import SwiftUI
import UserNotifications

struct MainView: View {
  var body: some View {
    Button("Request Permission") {
      UNUserNotificationCenter.current().requestAuthorization(options: [.alert]) { success, error in
        NSLog("success:\(success) error:\(error)")
      }
    }
  }
}

这总是打印success:false error:nil，屏幕上不会弹出任何内容。如果我使用UNUserNotificationCenter.current().getNotificationSettings() 打印应用程序的当前通知设置，我会得到

<UNNotificationSettings: 0x2824a8a80;
 authorizationStatus: NotDetermined
 notificationCenterSetting: NotSupported
 soundSetting: NotSupported
 badgeSetting: NotSupported
 lockScreenSetting: NotSupported
 carPlaySetting: NotSupported
 announcementSetting: NotSupported
 criticalAlertSetting: NotSupported
 alertSetting: NotSupported
 alertStyle: None
 groupingSetting: Default
 providesAppNotificationSettings: No>

（我对上面的部分进行了格式化，所以它不是一条长线）

我的主要问题是：

为什么requestAuthorization 失败了？
为什么在上面的设置中一切都设置为NotSupported？

如果有什么不同，这里是我的 info.plist：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleExecutable</key>
    <string>cync</string>
    <key>CFBundleIcons</key>
    <dict>
        <key>CFBundlePrimaryIcon</key>
        <dict>
            <key>CFBundleIconFiles</key>
            <array>
                <string>AppIcon29x29</string>
                <string>AppIcon40x40</string>
                <string>AppIcon57x57</string>
                <string>AppIcon60x60</string>
            </array>
            <key>UIPrerenderedIcon</key>
            <true/>
        </dict>
    </dict>
    <key>CFBundleIcons~ipad</key>
    <dict>
        <key>CFBundlePrimaryIcon</key>
        <dict>
            <key>CFBundleIconFiles</key>
            <array>
                <string>AppIcon29x29</string>
                <string>AppIcon40x40</string>
                <string>AppIcon57x57</string>
                <string>AppIcon60x60</string>
                <string>AppIcon50x50</string>
                <string>AppIcon72x72</string>
                <string>AppIcon76x76</string>
            </array>
            <key>UIPrerenderedIcon</key>
            <true/>
        </dict>
    </dict>
    <key>CFBundleIdentifier</key>
    <string>com.enricozb.cync</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundlePackageType</key>
    <string>APPL</string>
    <key>CFBundleSignature</key>
    <string>????</string>
    <key>CFBundleSupportedPlatforms</key>
    <array>
        <string>iPhoneOS</string>
    </array>
    <key>CFBundleVersion</key>
    <string>1.0</string>
    <key>LSRequiresIPhoneOS</key>
    <true/>
    <key>UIDeviceFamily</key>
    <array>
        <integer>1</integer>
        <integer>2</integer>
    </array>
    <key>UIRequiredDeviceCapabilities</key>
    <array>
        <string>armv7</string>
    </array>
    <key>UISupportedInterfaceOrientations</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
    <key>UISupportedInterfaceOrientations~ipad</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationPortraitUpsideDown</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
</dict>
</plist>

【问题讨论】：

您只需询问一次并获得弹出窗口。你得到过一次弹出窗口吗？如果是这样，请删除手机上的应用，然后重试。
弹出窗口从未出现过

标签： ios swift linux jailbreak theos

【解决方案1】：

我认为这与被视为系统应用程序有关，但我不确定。无论哪种方式，我都可以通过添加来解决这个问题

<key>SBAppUsesLocalNotifications</key> <true/>

到应用程序的Info.plist。

【讨论】：