iOS版：无法获取BluetoothManager工作 [英] iOS: Can't get BluetoothManager to work

问题描述

的警告：我知道，私人框架不会在App Store飞的

我试图用BluetoothManager框架，让我1）检查是否蓝牙在设备上启用，并且2）如果不是，打开它。

I'm trying to use the BluetoothManager framework to let me 1) check if Bluetooth is enabled on a device, and 2) if not on, turn it on.

我可以成功加载BluetoothManager按照指令中找到<一href=\"http://stackoverflow.com/questions/1743610/programmatically-turn-on-bluetooth-in-the-iphone-sdk\">here,但一旦我这样做，BluetoothManager只是似乎没有做任何事情。

I can successfully load BluetoothManager per the instructions found here, but once I've done so, BluetoothManager just doesn't seem to do anything.

电话启用总是返回NO，即使启用了蓝牙功能。调用的setEnabled不会改变其状态。绝对每隔BluetoothManager电话我已经试过总是返回NO，零，零元素的数组，等等，总之，这得到返回似乎完全阉割的BluetoothManager。 （我运行了我的4.2.1的iPhone，而不是模拟器。）

Calling enabled always returns NO, even when Bluetooth is enabled. Calling setEnabled never changes its state. Absolutely every other BluetoothManager call I've tried always returns NO, nil, zero-element arrays, etc. In short, the BluetoothManager that gets returned seems totally neutered. (I'm running off my 4.2.1 iPhone, not the simulator.)

我已经看到谁声称已经得到了这个工作的人的职位，但我一直没能得到他们的响应。任何人都可以阐明为什么这可能无法正常工作？

I've seen posts from people who claim to have gotten this working, yet I haven't been able to get a response from them. Can anyone shed light on why this might not be working?

非常感谢。

推荐答案

这需要一秒钟的BluetoothManager启动和附加到BTServer。我只是做了一个快速调用共享实例 - [BluetoothManager sharedInstance]; - 迫使它初始化。一旦它的完成初始化它会发布的 BluetoothAvailabilityChangedNotification 。我只是侦听，并尝试 [BluetoothManager sharedInstance]的setEnabled：YES]; 的通知回调

It takes a second for the BluetoothManager to startup and attach to the BTServer. I just did a quick call to the shared instance - [BluetoothManager sharedInstance]; - to force it to init. Once it's finished init it will post a BluetoothAvailabilityChangedNotification. I'd just listen for that and try [[BluetoothManager sharedInstance] setEnabled:YES]; in the notification callback.

仅供参考，包含在NSNotification为对象的 BluetoothAvailabilityChangedNotification 是一个布尔值，所以你应该能够检查，以确保蓝牙是真的可用。

FYI, the object included in the NSNotification for BluetoothAvailabilityChangedNotification is a boolean, so you should be able to check that to make sure that Bluetooth is really available.

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