全志 523 投屏功能多次断开连接后不能再次连接;
后经过测试后发现重置wifi 和蓝牙数据后可以重新连接；
方式1：所以简单处理一下，断开连接时把路由删除;

Index: core/java/com/android/internal/app/MediaRouteControllerDialog.java
===================================================================
@@ -38,6 +38,7 @@
 import android.widget.FrameLayout;
 import android.widget.LinearLayout;
 import android.widget.SeekBar;
+import android.util.Log;
 
 /**
  * This class implements the route controller dialog for {@link MediaRouter}.
@@ -142,6 +143,8 @@
                 new OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialogInterface, int id) {
+                        Log.d("MediaRouteControllerDialog","route: " + mRoute.isSelected() + " ,isBluetooth? " + mRoute.isBluetooth() );
+                        //mRoute.clearUserRoutes(); 
                         if (mRoute.isSelected()) {
                             if (mRoute.isBluetooth()) {
                                 mRouter.getDefaultRoute().select();
@@ -149,6 +152,8 @@
                                 mRouter.getFallbackRoute().select();
                             }
                         }
+                        //删除连接
+                        mRouter.removeRouteInt(mRoute);
                         dismiss();
                     }

方式2：重置 p2pFactoryReset

Index: services/core/java/com/android/server/display/WifiDisplayController.java
===================================================================
@@ -607,6 +607,7 @@
                 public void onSuccess() {
                     Slog.i(TAG, "Disconnected from Wifi display: " + oldDevice.deviceName);
                     next();
+                    //p2pFactoryReset(mContext);
                 }
 
                 @Override
@@ -793,6 +794,20 @@
         }
     }
 
+    /*void p2pFactoryReset(Context context) {
+        Log.d(TAG,"p2pFactoryReset: " );
+        WifiP2pManager wifiP2pManager = (WifiP2pManager)
+                context.getSystemService(Context.WIFI_P2P_SERVICE);
+        if (wifiP2pManager != null) {
+            WifiP2pManager.Channel channel = wifiP2pManager.initialize(
+                    context.getApplicationContext(), context.getMainLooper(),
+                    null);
+            if (channel != null) {
+                wifiP2pManager.factoryReset(channel, null);
+            }
+        }
+    }*/
+
     private WifiDisplaySessionInfo getSessionInfo(WifiP2pGroup info, int session) {
         if (info == null) {
             return null;