Initial attempt at pairing with child device with address/port

On some networks or some mDNS implementations child discovery may not
work well. As an alternative, allow a parent to connect to a device
directly with an IP Address and port.

AndroidManifest.xml

@@ -36,6 +36,7 @@
             android:name="protect.babymonitor.DiscoverActivity"
             android:label="@string/app_name"
             android:configChanges="orientation|screenSize"
+            android:windowSoftInputMode="adjustPan"
             android:parentActivityName="protect.babymonitor.StartActivity"
             />
         <activity

res/layout/activity_discover.xml

@@ -22,6 +22,64 @@
         android:layout_width="match_parent"
         android:layout_height="15dip" />
 
+    <TextView
+        android:id="@+id/parentPairInstructions"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/parentPairInstructions" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
+    <TextView
+        android:id="@+id/ipAddressTitle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="20sp"
+        android:text="@string/addressTitle" />
+
+    <EditText
+        android:id="@+id/ipAddressField"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:ems="10"
+        android:hint="@string/exampleAddress"
+        android:inputType="textUri"
+        android:textSize="20sp"
+        android:nextFocusForward="@+id/portField" >
+
+    </EditText>
+
+    <TextView
+        android:id="@+id/portTitle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="20sp"
+        android:text="@string/portTitle" />
+
+    <EditText
+        android:id="@+id/portField"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textSize="20sp"
+        android:ems="10"
+        android:inputType="number"
+        android:maxLength="5"
+        android:hint="@string/examplePort"
+        android:nextFocusForward="@+id/connectViaAddressButton"/>
+
+    <Button
+        android:id="@+id/connectViaAddressButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:text="@string/connect" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
     <TextView
         android:id="@+id/selectChildDeviceTitle"
         android:layout_width="wrap_content"

res/values/strings.xml

@@ -24,4 +24,9 @@
     <string name="portTitle">Port:</string>
     <string name="addressDescription">Address and port that parent must pair to</string>
     <string name="wifiNotConnected">Not connected to a Wi-Fi network</string>
+    <string name="parentPairInstructions">Enter the IP Address and port of a child and click Connect, or choose a child from the list below</string>
+    <string name="connect">Connect</string>
+    <string name="exampleAddress">192.168.1.2</string>
+    <string name="examplePort">10000</string>
+    <string name="invalidPort">Either no port was entered or it is invalid</string>
 </resources>

src/protect/babymonitor/DiscoverActivity.java

@@ -27,7 +27,10 @@ import android.view.View;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.EditText;
 import android.widget.ListView;
+import android.widget.Toast;
 
 public class DiscoverActivity extends Activity
 {
@@ -47,6 +50,32 @@ public class DiscoverActivity extends Activity
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_discover);
 
+        final Button connectButton = (Button) findViewById(R.id.connectViaAddressButton);
+        connectButton.setOnClickListener(new View.OnClickListener()
+        {
+            @Override
+            public void onClick(View v)
+            {
+                Log.i(TAG, "Connecting to child device via address");
+
+                final EditText addressField = (EditText) findViewById(R.id.ipAddressField);
+                final EditText portField = (EditText) findViewById(R.id.portField);
+
+                final String addressString = addressField.getText().toString();
+                final String portString = portField.getText().toString();
+
+                try
+                {
+                    final int port = Integer.parseInt(portString);
+                    connectToChild(addressString, port, addressString);
+                }
+                catch(NumberFormatException e)
+                {
+                    Toast.makeText(DiscoverActivity.this, R.string.invalidPort, Toast.LENGTH_LONG).show();
+                }
+            }
+        });
+
         startServiceDiscovery("_babymonitor._tcp.");
     }
 
@@ -83,13 +112,7 @@ public class DiscoverActivity extends Activity
                     int position, long id)
             {
                 final ServiceInfoWrapper info = (ServiceInfoWrapper) parent.getItemAtPosition(position);
-                final Intent i = new Intent(getApplicationContext(), ListenActivity.class);
+                connectToChild(info.getAddress(), info.getPort(), info.getName());
-                final Bundle b = new Bundle();
-                b.putString("address", info.getAddress());
-                b.putInt("port", info.getPort());
-                b.putString("name", info.getName());
-                i.putExtras(b);
-                startActivity(i);
             }
         });
 
@@ -181,6 +204,24 @@ public class DiscoverActivity extends Activity
         nsdManager.discoverServices(
                 serviceType, NsdManager.PROTOCOL_DNS_SD, _discoveryListener);
     }
+
+    /**
+     * Launch the ListenActivity to connect to the given child device
+     *
+     * @param address
+     * @param port
+     * @param name
+     */
+    private void connectToChild(final String address, final int port, final String name)
+    {
+        final Intent i = new Intent(getApplicationContext(), ListenActivity.class);
+        final Bundle b = new Bundle();
+        b.putString("address", address);
+        b.putInt("port", port);
+        b.putString("name", name);
+        i.putExtras(b);
+        startActivity(i);
+    }
 }
 
 class ServiceInfoWrapper