xcode CoreBluetooth[WARNING] 没有恢复标识符但委托实现
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原文地址: http://stackoverflow.com/questions/20956880/
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CoreBluetooth[WARNING] has no restore identifier but the delegate implements
提问by Beno?t Freslon
I'm using the CoreBluetooth but I got this warning message in the output.
我正在使用 CoreBluetooth，但在输出中收到此警告消息。
CoreBluetooth[WARNING] has no restore identifier but the delegate implements the centralManager:willRestoreState: method. Restoring will not be supported!
CoreBluetooth[WARNING] 没有恢复标识符，但委托实现了 centralManager:willRestoreState: 方法。不支持恢复！
I'm using this code:
我正在使用此代码：
NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:NO], CBCentralManagerOptionShowPowerAlertKey, nil];
myCentralManager = [[CBCentralManager alloc] initWithDelegate:self queue:nil options:options];
I don't know what's wrong.
我不知道怎么了。
Thanks.
谢谢。
回答by foggzilla
This is in regards to CoreBluetooth's save/restore optional feature, see "Opt In to State Preservation and Restoration" part of the documentationfor more details.
这是关于 CoreBluetooth 的保存/恢复可选功能，请参阅文档的“选择加入状态保存和恢复”部分了解更多详细信息。
What looks to be happening is that you are implementing the right delegate method to use this feature but you are not providing a restoration identifier in your call to initialize the CBCentralManager.
看起来正在发生的事情是您正在实施正确的委托方法来使用此功能，但您没有在调用中提供恢复标识符来初始化CBCentralManager.
There are two options to resolve the warning:
有两个选项可以解决警告：
If you want to use this feature you should provide a string identifier that represents the central or peripheral manager to CBCentralManager like so:
myCentralManager = [[CBCentralManager alloc] initWithDelegate:self queue:nil options:@{ CBCentralManagerOptionRestoreIdentifierKey: @"myCentralManagerIdentifier" }];If you don't want to use this feature then remove the
centralManager:willRestoreState:method from your delegate.
如果您想使用此功能，您应该向 CBCentralManager 提供一个代表中央或外围管理器的字符串标识符，如下所示：
myCentralManager = [[CBCentralManager alloc] initWithDelegate:self queue:nil options:@{ CBCentralManagerOptionRestoreIdentifierKey: @"myCentralManagerIdentifier" }];如果您不想使用此功能
centralManager:willRestoreState:，请从您的委托中删除该方法。
Doing either one should resolve your warning.
做任何一个都可以解决您的警告。
