我正在开发一个基于WiFi Direct for
Android的简单应用程序,它必须连接两个设备.为此,我需要调用funciónonPeersAvailable(myPeerListListener),但我不知道如何.
我的应用程序有这两个元素：
1主要活动：
package android.nacho.WifiDirect; import android.net.wifi.p2p.wifip2pManager.Channel; import android.net.wifi.p2p.wifip2pManager; import android.os.Bundle; import android.app.Activity; import android.content.broadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; public class WifiDirect extends Activity { wifip2pManager mManager; Channel mChannel; broadcastReceiver mReceiver; IntentFilter mIntentFilter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_wifi_direct); //To register the broadastReceiver mManager = (wifip2pManager) getSystemService(Context.WIFI_P2P_SERVICE); mChannel = mManager.initialize(this,getMainLooper(),null); //It was necessary to make a cast (Channel) mReceiver = new WiFibroadcastReceiver(mManager,mChannel,this); //,this); //Layout final Button btnScan = (Button)findViewById(R.id.btnScan); final TextView TextDebug=(TextView)findViewById(R.id.TextDebug); //To define the filter in the broadcastReceiver mIntentFilter = new IntentFilter(); mIntentFilter.addAction(wifip2pManager.WIFI_P2P_STATE_CHANGED_ACTION); mIntentFilter.addAction(wifip2pManager.WIFI_P2P_PEERS_CHANGED_ACTION); mIntentFilter.addAction(wifip2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION); mIntentFilter.addAction(wifip2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION); final OnClickListener ScanListener=new OnClickListener() //Sacado de TEstPsycologico { public void onClick(View v){ TextDebug.setText("Se intentan buscar Peers"); mManager.discoverPeers(mChannel,new wifip2pManager.ActionListener() { public void onSuccess() { TextDebug.setText("Ha habido éxito buscando Peers");//DEBUG: Para ver si es posible encontrar Peers } public void onFailure(int reasonCode) { TextDebug.setText("Algo ha salido mal buscando Peers"); //DEBUG: Para ver si pasó algo raro busando Peers } }); onPeersAvailable(myPeerListListener); } }; btnScan.setonClickListener(ScanListener); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_wifi_direct,menu); return true; } // @Override protected void onResume() { super.onResume(); registerReceiver(mReceiver,mIntentFilter); } // unregister the broadcast receiver @Override protected void onPause() { super.onPause(); unregisterReceiver(mReceiver); } }
2类broadcastReceiver：
package android.nacho.WifiDirect; import android.net.wifi.p2p.wifip2pManager.Channel; import android.net.wifi.p2p.wifip2pManager.PeerListListener; import android.content.broadcastReceiver; import android.content.Context; import android.content.Intent; import android.net.wifi.p2p.wifip2pManager; import android.widget.Toast; /** * A broadcastReceiver that notifies of important Wi-Fi p2p events. */ public class WiFibroadcastReceiver extends broadcastReceiver { private wifip2pManager manager; private Channel channel; private WifiDirect activity; private PeerListListener myPeerListListener; //For toast,add also context //private Context context; public WiFibroadcastReceiver(wifip2pManager manager,Channel channel,WifiDirect activity){//,Context context) { super(); this.manager = manager; this.channel = channel; this.activity = activity; // this.context= context; } @Override public void onReceive(Context context,Intent intent) { String action = intent.getAction(); if (wifip2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) { // Check to see if Wi-Fi is enabled and notify appropriate activity int state = intent.getIntExtra(wifip2pManager.EXTRA_WIFI_STATE,-1); if (state == wifip2pManager.WIFI_P2P_STATE_ENABLED) { //Toast.makeText(context,"Wi-Fi Direct is enable",Toast.LENGTH_LONG).show(); } else { //Toast.makeText(context,"Wi-Fi Direct is not enable",Toast.LENGTH_LONG).show(); } } else if (wifip2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) { // Call wifip2pManager.requestPeers() to get a list of current peers // request available peers from the wifi p2p manager. This is an // asynchronous call and the calling activity is notified with a // callback on PeerListListener.onPeersAvailable() if (manager != null) { manager.requestPeers(channel,myPeerListListener); manager.onPeersAvailable(myPeerListListener); } } else if (wifip2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) { // Respond to new connection or disconnections } else if (wifip2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) { // Respond to this device's wifi state changing } } }
到目前为止,我的代码应该能够检测运行应用程序的设备周围的对等体,哪个ID应该存储在变量myPeerListListener中.所有这些都发生在名为OnReceiv()的broadcastReceiver方法的第二个意图中,通过调用：
manager.requestPeers(channel,myPeerListListener);
现在我想操纵那个列表.因此,根据API信息,它应该调用requestPeers,您可以在此处查看API：
http://developer.android.com/guide/topics/connectivity/wifip2p.html
*发现同行的部分
所以我试过的是在下面打电话给：
manager.onPeersAvailable(myPeerListListener);
但我得到这个错误：
对于wifip2pManager类型,未定义onPeersAvailable(wifip2pManager.PeerListListener)方法
谁能告诉我怎样才能将PeerListListener正确发送到主活动？
非常感谢您的宝贵时间
解决方法
您应该在PeerListListener中实现onPeersAvailable方法.
有关更多信息,请参阅http://developer.android.com/training/connect-devices-wirelessly/wifi-direct.html.
