在iOS上最小化cordova应用程序后，EAA附件停止

我正在构建一个连接到蓝牙阅读器的cordova应用程序。当应用程序运行时（未最小化），一切正常。我能够读取蓝牙数据。如果我现在最小化应用程序，然后再次将其最大化（不确定这是否是正确的术语），那么我将无法再接收任何数据。我确实在XCode中看到了以下内容：

2015-11-26 12:24:13.944 MyAppName[704:170849] /SourceCache/ExternalAccessory/ExternalAccessory-288.20.7/EAAccessoryManager.m:_51-[EAAccessoryManager _checkForConnectedAccessories]\u block\u invoke-631结束后台任务

我还尝试使用以下代码实现accessoryDidConnect和accessoryDidDisconnect，但这两个函数从未被调用：

- (void) pluginInitialize
{
    NSLog(@"init called");
    [[NSNotificationCenter defaultCenter] addObserver:selfselector:@selector(accessoryDidConnect:)
                                                 name:EAAccessoryDidConnectNotification
                                               object:nil];


    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(accessoryDidDisconnect:)
                                                 name:EAAccessoryDidDisconnectNotification object:nil];
}

-(void) accessoryDidConnect:(NSNotification *)notification
{
    EAAccessory *connectedAccessory = [[notification userInfo] objectForKey:EAAccessoryKey];
    NSLog(@"error :%@", connectedAccessory.protocolStrings);
    // Only notify of change if the accessory added has valid protocol strings
    if( connectedAccessory.protocolStrings.count != 0 )
    {
        _accessoryList = [[[EAAccessoryManager sharedAccessoryManager] connectedAccessories] mutableCopy];
    }
    NSLog(@"connected");
    isDeviceLoaded=true;
}

- (void)accessoryDidDisconnect:(NSNotification *)notification
{
    //    EAAccessory *disconnectedAccessory = (EAAccessory *)[notification.userInfo objectForKey:@"EAAccessorySelectedKey"];
    NSLog(@"disconnected");
    _accessoryList = [[[EAAccessoryManager sharedAccessoryManager] connectedAccessories]mutableCopy];
    isDeviceLoaded=true;
}

---

调用了pluginInitialize函数，但从未调用accessoryDidConnect或accessoryDidDisconnect。如何重新连接到蓝牙读卡器

我让它工作了。我的插件中缺少以下最后一行：

[[EAAccessoryManager sharedAccessoryManager] registerForLocalNotifications];

下面是完整的方法：

- (void) pluginInitialize
{
    NSLog(@"init called");
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(accessoryDidConnect:)
                                                 name:EAAccessoryDidConnectNotification
                                               object:nil];


    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(accessoryDidDisconnect:)
                                                 name:EAAccessoryDidDisconnectNotification
                                               object:nil];

    [[EAAccessoryManager sharedAccessoryManager] registerForLocalNotifications];

}