UNUserNotificationCenter的requestAuthorization返回success:false error:nil

编程问答 2022-04-27

问题描述

我正在运行 iOS13.3 的越狱 iPhone 6s 上开发一个 swift 应用程序，在 linux 上使用 theos。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>

（我格式化了上面的部分，所以它不是一个长行）

我的主要问题是：

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

如果它有所作为，这是我的 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>

解决方法

我认为这与将其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。

iosiosjailbreaklinuxlinuxswiftswiftswifttheos