在Android上没有工作的WiFi直正常 [英] WiFi Direct on Android not working properly

问题描述

我想开发使用WiFi直接在安卓果冻豆4.1.1的应用程序。如果P2P启用我immedialtely叫

I am trying to develop an app using wifi direct in android Jelly Bean 4.1.1. If p2p is enabled I immedialtely call

mManager.discoverPeers(mChannel, actionListener);

之后，我收到一个电话回

After that I am getting a call back to the

onPeersAvailable(WifiP2pDeviceList)

我有2个三星（谷歌）的Nexus设备和WiFi直接测试已开启两个。但这个回调将返回同行的空单。但是，例如，如果我点击搜索同行的默认无线网络直接接口按钮immedialtely第二装置触发

I am testing with 2 Samsung(Google) Nexus device and wifi direct is turned on on both. But this call back is returning an empty list of peers. But for instance if I click on the Search Peers button on the default wifi direct interface immedialtely the second device fires the

WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION

WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION

和这依次调用

onPeersAvailable(WifiP2pDeviceList peers)

因为我要求使用同行针对该事件

as I am requesting for peers for that event using

mManager.requestPeers(mChannel, WifiDirectService.this);

这时候我就能看到同龄人。我看到这对于许多次。

This time I will be able to see the peers. I am seeing this for a number of times.

可能是什么可能的原因？ 谢谢

What could be the possible reason? Thanks

推荐答案

您应该使用发现peermethod：

You should use the Discovering peermethod:

manager.discoverPeers(channel, new WifiP2pManager.ActionListener() {
    @Override
    public void onSuccess() {
        ...
    }

    @Override
    public void onFailure(int reasonCode) {
        ...
    }
});

如果发现过程成功，并检测同行，系统广播WIFI_P2P_PEERS_CHANGED_ACTION意图，你可以在一个广播接收器监听获得同龄人的名单。当你的应用程序收到WIFI_P2P_PEERS_CHANGED_ACTION意图，您可以要求发现的对等与requestPeers）的列表（

If the discovery process succeeds and detects peers, the system broadcasts the WIFI_P2P_PEERS_CHANGED_ACTION intent, which you can listen for in a broadcast receiver to obtain a list of peers. When your application receives the WIFI_P2P_PEERS_CHANGED_ACTION intent, you can request a list of the discovered peers with requestPeers().

有关完整的示例，请查看：的http://developer.android.com/guide/topics/connectivity/wifip2p.html#discovering

For the full example, please check: http://developer.android.com/guide/topics/connectivity/wifip2p.html#discovering

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