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我使用GKPeerPickerController,我需要使用WiFi來發送消息,所以IAM使用下面的代碼異常而肥大類型GKPeerPickerConnectionTypeOnline
picker = [[GKPeerPickerController alloc] init];
picker.connectionTypesMask= GKPeerPickerConnectionTypeOnline;
picker.delegate = self;
但是當我使用出現此以下錯誤
Terminating app due to uncaught exception 'GKInvalidArgumentException', reason: 'A GKPeerPickerController must support GKPeerPickerConnectionTypeNearby at a minimum.'
請幫助如何解決它?