Question

我在初始化后台NSURLSessions时遇到问题而没有阻止进程并最终将错误日志丢弃到控制台上。我的代码就像这样布局了

NSURLSessionConfiguration * configuration = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:@"Something.something"];
configuration.sharedContainerIdentifier = @"group.Something.something.else"

self.operationQueue = [[NSOperationQueue alloc] init];
self.operationQueue.maxConcurrentOperationCount = 1;

self.session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:self.operationQueue];

初始化后，它会阻止进程，30秒后会生成此错误日志

2017-12-08 15:14:29.778309-0500 LibraryManagerTestExtension[1828:1032535] failed to open connection to AppleKeyStore
2017-12-08 15:14:29.778489-0500 LibraryManagerTestExtension[1828:1032535] Unexpected AppleKeyStore error: -536870212
2017-12-08 15:14:29.778844-0500 LibraryManagerTestExtension[1828:1032535] MKBDeviceUnlockedSinceBoot: MKBDeviceUnlockedSinceBoot fails with error(-1) for handle(0) with AKS error(-536870212)
2017-12-08 15:14:29.778915-0500 LibraryManagerTestExtension[1828:1032535] Attempting to create a background session before first device unlock!
2017-12-08 15:14:29.782429-0500 LibraryManagerTestExtension[1828:1032603] An error occurred on the xpc connection: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.nsurlsessiond was invalidated." UserInfo={NSDebugDescription=The connection to service named com.apple.nsurlsessiond was invalidated.}

这是我的Info.plist设置

<key>NSExtension</key>
<dict>
    <key>NSExtensionAttributes</key>
    <dict>
        <key>RequestOpenAccess</key>
        <true/>
        <key>NSExtensionActivationRule</key>
        <dict>
            <key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
            <string>5</string>
        </dict>
    </dict>
    <key>NSExtensionPointIdentifier</key>
    <string>com.apple.app.non-ui-extension</string>
    <key>NSExtensionPrincipalClass</key>
    <string>$(PRODUCT_MODULE_NAME).LibraryManagerTestExtension</string>
</dict>

知道如何不做到这一点吗？

Answer 1

我看到您将NSExtensionPointIdentifier设置为com.apple.app.non-ui-extension。这是一个私人标识符，并且具有受限制的权限，阻止您执行此操作。

我建议您将NSExtensionPointIdentifier更改为com.apple.services（非UI操作），然后应该允许您执行这些操作的权限。

如果不在iOS Action Extensions上被阻止，则无法创建后台会话

1 个答案: