diff -r ed1d52c5aa94 -r 763d3961400b project_files/Android-build/SDL-android-project/src/org/hedgewars/hedgeroid/NetplayStateFragment.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/project_files/Android-build/SDL-android-project/src/org/hedgewars/hedgeroid/NetplayStateFragment.java	Sat Aug 18 00:47:51 2012 +0200
@@ -0,0 +1,120 @@
+package org.hedgewars.hedgeroid;
+
+import org.hedgewars.hedgeroid.R;
+import org.hedgewars.hedgeroid.frontlib.Frontlib;
+import org.hedgewars.hedgeroid.netplay.Netplay;
+import org.hedgewars.hedgeroid.netplay.Netplay.State;
+
+import android.app.Activity;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.content.LocalBroadcastManager;
+import android.widget.Toast;
+
+/**
+ * Fragment for use by an activity that depends on the state of the network
+ * connection. The activity must implement the NetplayStateListener interface.
+ * 
+ * This fragment manages a few aspects of the netplay connection: Requesting
+ * the network system loop to run at high frequency while the activity is in
+ * the foreground, and reacting to changes in the networking state by calling
+ * a callback method on the activity. 
+ */
+public class NetplayStateFragment extends Fragment {
+    private Netplay netplay;
+    private Context appContext;
+    private LocalBroadcastManager broadcastManager;
+    private NetplayStateListener listener;
+    private State knownState;
+    
+    interface NetplayStateListener {
+    	/**
+    	 * This is called while the activity is running, and every time during resume, if
+    	 * a change in the networking state is detected. It is also called once
+    	 * with the initial state (which could be called a change from the "unknown" state).
+    	 */
+    	void onNetplayStateChanged(State newState);
+    } 
+    
+    @Override
+	public void onAttach(Activity activity) {
+		super.onAttach(activity);
+		try {
+			listener = (NetplayStateListener) activity;
+		} catch(ClassCastException e) {
+			throw new ClassCastException("Activity " + activity + " must implement NetplayStateListener to use NetplayStateFragment.");
+		}
+	}
+	
+	@Override
+	public void onDetach() {
+		super.onDetach();
+		listener = null;
+	}
+	
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        appContext = getActivity().getApplicationContext();
+        broadcastManager = LocalBroadcastManager.getInstance(appContext);
+        netplay = Netplay.getAppInstance(appContext);
+    }    
+
+    @Override
+    public void onResume() {
+    	super.onResume();
+    	broadcastManager.registerReceiver(disconnectReceiver, new IntentFilter(Netplay.ACTION_DISCONNECTED));
+    	broadcastManager.registerReceiver(leaveRoomReceiver, new IntentFilter(Netplay.ACTION_LEFT_ROOM));
+    	broadcastManager.registerReceiver(stateChangeReceiver, new IntentFilter(Netplay.ACTION_STATE_CHANGED));
+    	
+    	State newState = netplay.getState();
+		if(knownState != newState) {
+    		listener.onNetplayStateChanged(newState);
+    		knownState = newState;
+    	}
+    }
+    
+    @Override
+    public void onPause() {
+    	super.onPause();
+    	broadcastManager.unregisterReceiver(disconnectReceiver);
+    	broadcastManager.unregisterReceiver(leaveRoomReceiver);
+    	broadcastManager.unregisterReceiver(stateChangeReceiver);
+    }
+
+	private final BroadcastReceiver disconnectReceiver = new BroadcastReceiver() {
+		@Override
+		public void onReceive(Context context, Intent intent) {
+			if(intent.getBooleanExtra(Netplay.EXTRA_HAS_ERROR, true)) {
+				String message = intent.getStringExtra(Netplay.EXTRA_MESSAGE);
+				String toastText = getString(R.string.toast_disconnected, message);
+				Toast.makeText(appContext, toastText, Toast.LENGTH_LONG).show();
+			}
+		}
+	};
+	
+	private final BroadcastReceiver leaveRoomReceiver = new BroadcastReceiver() {
+		@Override
+		public void onReceive(Context context, Intent intent) {
+			int reason = intent.getIntExtra(Netplay.EXTRA_REASON, -1);
+			if(reason == Frontlib.NETCONN_ROOMLEAVE_ABANDONED) {
+				Toast.makeText(appContext, R.string.toast_room_abandoned, Toast.LENGTH_LONG).show();
+			} else if(reason == Frontlib.NETCONN_ROOMLEAVE_KICKED) {
+				Toast.makeText(appContext, R.string.toast_kicked, Toast.LENGTH_LONG).show();
+			}
+		}
+	};
+	
+	private final BroadcastReceiver stateChangeReceiver = new BroadcastReceiver() {
+		@Override
+		public void onReceive(Context context, Intent intent) {
+			State newState = netplay.getState();
+			listener.onNetplayStateChanged(newState);
+			knownState = newState;
+		}
+	};
+}