ios - GKPeerPicker Controller 中出现重复的对等名称
<p><p>如果我在两个 ios 设备上多次连接和断开蓝牙，我会得到重复的 peername。</p>
<p>有没有办法在 gkpeerpickercontroller 中为蓝牙聊天应用程序获取唯一对等点的单个名称。</p>
<p>还附上了它的截图。
<img src="/image/efFX0.png" alt="Multiple duplicate peer appears"/> </p>
<p>我正在使用下面的代码来显示 GKPeerPickerController。</p>
<hr/>
<pre><code>-(IBAction)btnConnectClicked:(id)sender
{
;
}
-(IBAction)btnDisconnectClicked:(id)sender
{
;
}
-(void)openPeerPickerController
{
if (!currentSession)
{
GKPeerPickerController *peerPicker2 = [ init];
peerPicker2.delegate = self;
peerPicker2.connectionTypesMask = GKPeerPickerConnectionTypeNearby;
;
}
}
-(void)peerPickerController:(GKPeerPickerController *)picker didConnectPeer:(NSString *)peerID toSession:(GKSession *) session
{
NSLog(@"Peer session connected");
//set session delegate and dismiss the picker
session.delegate = self;
currentSession = session;
picker.delegate = nil;
;
}
- (GKSession *)peerPickerController:(GKPeerPickerController *)picker sessionForConnectionType:(GKPeerPickerConnectionType)type
{
//create ID for session
NSString *sessionIDString = @"MTBluetoothSessionID";
//create GKSession object
GKSession *session = [ initWithSessionID:sessionIDString displayName:nil sessionMode:GKSessionModePeer];
return session;
}
-(void)peerPickerControllerDidCancel:(GKPeerPickerController *)picker
{
NSLog(@"Peer cancelled");
;
currentSession=nil;
picker.delegate = nil;
}
-(void)session:(GKSession *)session peer:(NSString *)peerID didChangeState:(GKPeerConnectionState)state
{
switch (state)
{
case GKPeerStateAvailable:
{
// not connected to session, but available for connectToPeer:withTimeout:
}
break;
case GKPeerStateUnavailable:
{
// no longer available
}
break;
case GKPeerStateConnected:
{
// connected to the session
; //set ViewController to receive data
}
break;
case GKPeerStateDisconnected:
{
// disconnected from the session
currentSession.delegate = nil;
currentSession = nil; //allow session to reconnect if it gets disconnected
}
break;
case GKPeerStateConnecting:
{
// waiting for accept, or deny response
}
break;
default:
break;
}
}
</code></pre></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>你的 GKPeerPickerControllerDelegate 方法</p>
<pre><code>- (GKSession *)peerPickerController:(GKPeerPickerController *)picker sessionForConnectionType:(GKPeerPickerConnectionType)type
</code></pre>
<p>每次都返回一个新 session 。在您的情况下，它被调用两次，因此创建了两个 session 。
来自文档:</p>
<blockquote>
<p>When the peer picker needs a session, it calls this method. Your
application can either create a new session or return a previously
created session to the peer picker.</p>
</blockquote>
<p>因此您可以将 session 声明为一个属性并编写一个 getter，然后在委托(delegate)中返回 session 属性，这将避免创建多个 session </p>
<pre><code>@property (nonatomic, string) GKSession *session;
#define sessionIDString @"MTBluetoothSessionID"
- (GKSession) session {
if(!_session) {
//create GKSession object
_session = [ initWithSessionID:sessionIDString displayName:nil sessionMode:GKSessionModePeer];
}
return _session;
}
</code></pre>
<p>并将委托(delegate)方法更改为:</p>
<pre><code>- (GKSession *)peerPickerController:(GKPeerPickerController *)picker sessionForConnectionType:(GKPeerPickerConnectionType)type {
return self.session;
}
</code></pre>
<p>确保在完成后取消 session 。</p></p>
<p style="font-size: 20px;">关于ios - GKPeerPickerController 中出现重复的对等名称，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/24257080/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/24257080/
</a>
</p>
页:
[1]