问题描述
我的工作，关于外设断开反应的程序，现在我想采用NE状态preservation和恢复的iOS 7中引入的。
I am working on an app that reacts on disconnects of peripherals and I am now trying to adopt the ne state preservation and restoration introduced in iOS 7.
我不喜欢的文件说的一切，意思是：
I did everything like the documentation says, means:
-
我添加了背景模式中切牙。
I added the background mode for centrals.
我总是实例化我的中央管理器具有相同唯一
标识符。
I always instantiate my central manager with the same unique identifier.
我实现了 centralManager：willRestoreState：法
在我的应用程序移动到后台我杀了它在AppDelegate中的回调与杀号（getpid（），SIGKILL）; 。 （<一href=\"http://stackoverflow.com/questions/20529685/core-bluetooth-state-$p$pservation-and-restoration-not-working-cant-relaunch-ap/22244674#22244674\">Core蓝牙状态preservation和恢复不灵，无法重新启动应用程序转入后台）
When my App moves to background I kill it in the AppDelegate callback with an kill(getpid(), SIGKILL);. (Core Bluetooth State Preservation and Restoration Not Working, Can't relaunch app into background)
当我现在取出电池我的应用程序正在被唤醒预期和 launchOptions [UIApplicationLaunchOptionsBluetoothCentralsKey] 包含正确的标识符，但 centralManager：willRestoreState：不叫。
只有当我拔下其它外围设备，这种方法被调用。
When I now disconnect a peripheral by removing the battery my app is being waked up as expected and launchOptions[UIApplicationLaunchOptionsBluetoothCentralsKey] contains the correct identifier BUT the centralManager:willRestoreState: was not called.Only if I disconnect another peripheral this method gets called.
推荐答案
这是我怎么有它：
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
NSArray *peripheralManagerIdentifiers = launchOptions[UIApplicationLaunchOptionsBluetoothPeripheralsKey];
if (peripheralManagerIdentifiers) {
// We've restored, so create the _manager on the main queue
_manager = [[CBPeripheralManager alloc] initWithDelegate:self
queue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
options:@{CBPeripheralManagerOptionRestoreIdentifierKey:@"YourUniqueIdentifier"}];
} else {
// Not restored so just create as normal
manager = [[CBPeripheralManager alloc] initWithDelegate:self
queue:nil
options:@{CBPeripheralManagerOptionRestoreIdentifierKey:@"YourUniqueIdentifier"}];
}
return YES;
}
和则：
- (void)peripheralManager:(CBPeripheralManager *)peripheral
willRestoreState:(NSDictionary *)dict
{
// This is the advertisement data that was being advertised when the app was terminated by iOS
_advertisementData = dict[CBPeripheralManagerRestoredStateAdvertisementDataKey];
NSArray *services = dict[CBPeripheralManagerRestoredStateServicesKey];
// Loop through the services, I only have one service but if you have more you'll need to check against the UUID strings of each
for (CBMutableService *service in services) {
_primaryService = service;
// Loop through the characteristics
for (CBMutableCharacteristic *characteristic in _primaryService.characteristics) {
if ([characteristic.UUID.UUIDString isEqualToString:CHARACTERISTIC_UUID]) {
_primaryCharacteristic = characteristic;
NSArray *subscribedCentrals = characteristic.subscribedCentrals;
// Loop through all centrals that were subscribed when the app was terminated by iOS
for (CBCentral *central in subscribedCentrals) {
// Add them to an array
[_centrals addObject:central];
}
}
}
}
}
这篇关于核心蓝牙状态恢复的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！