offer to launch Setting app when there are no paired devices

xwords4/android/XWords4/archive/R.java

@@ -525,6 +525,7 @@ public final class R {
         /**  EXPLAIN ME 
          */
         public static final int bt_networked_desc=0x7f050180;
+        public static final int bt_no_devs=0x7f0502cd;
         /**   
          */
         public static final int bt_pick_clear_button=0x7f050205;
@@ -2224,7 +2225,7 @@ public final class R {
         /**  title for popup of public rooms found on server 
          */
         public static final int room_public_prompt=0x7f0500cc;
-        public static final int scan_progress=0x7f050207;
+        public static final int scan_progress_fmt=0x7f050207;
         /**   
          */
         public static final int scan_progress_title=0x7f050206;

xwords4/android/XWords4/res/values/strings.xml

@@ -1841,7 +1841,8 @@
 
       <!--  -->
     <string name="scan_progress_title">Scanning...</string>
-    <string name="scan_progress">Scanning for Crosswords on paired devices</string>
+    <string name="scan_progress_fmt">Scanning for Crosswords on %1$d
+    paired devices</string>
       <!--  -->
     <string name="summary_wait_host">Waiting for connection[s]</string>
       <!--  -->
@@ -2271,4 +2272,8 @@
     <string name="lmi_tiles_fmt">Tiles assigned to %1$s</string>
 
     <string name="bt_err_count_fmt">%1$d bluetooth errors so far</string>
+
+	<string name="bt_no_devs">You currently have no paired Bluetooth
+	devices. Would you like to open the Android Settings Panel to add
+	one or more?</string>
 </resources>

xwords4/android/XWords4/res_src/values-ba_CK/strings.xml

@@ -1578,7 +1578,8 @@
   <string name="bt_pick_clear_button">Evomer dekcehc</string>
   <!--  -->
   <string name="scan_progress_title">Gninnacs...</string>
-  <string name="scan_progress">Gninnacs rof Sdrowssorc no deriap secived</string>
+  <string name="scan_progress_fmt">Gninnacs rof Sdrowssorc no %1$d
+    deriap secived</string>
   <!--  -->
   <string name="summary_wait_host">Gnitiaw rof ]s[noitcennoc</string>
   <!--  -->
@@ -1940,4 +1941,7 @@
   <string name="lmi_phony_fmt">%1$s tsol a nrut</string>
   <string name="lmi_tiles_fmt">Selit dengissa ot %1$s</string>
   <string name="bt_err_count_fmt">%1$d htooteulb srorre os raf</string>
+  <string name="bt_no_devs">Uoy yltnerruc evah on deriap Htooteulb
+	secived. Dluow uoy ekil ot nepo eht Diordna Sgnittes Lenap ot dda
+	eno ro ?erom</string>
 </resources>

xwords4/android/XWords4/res_src/values-ca_PS/strings.xml

@@ -1578,7 +1578,8 @@
   <string name="bt_pick_clear_button">REMOVE CHECKED</string>
   <!--  -->
   <string name="scan_progress_title">SCANNING...</string>
-  <string name="scan_progress">SCANNING FOR CROSSWORDS ON PAIRED DEVICES</string>
+  <string name="scan_progress_fmt">SCANNING FOR CROSSWORDS ON %1$d
+    PAIRED DEVICES</string>
   <!--  -->
   <string name="summary_wait_host">WAITING FOR CONNECTION[S]</string>
   <!--  -->
@@ -1940,4 +1941,7 @@
   <string name="lmi_phony_fmt">%1$s LOST A TURN</string>
   <string name="lmi_tiles_fmt">TILES ASSIGNED TO %1$s</string>
   <string name="bt_err_count_fmt">%1$d BLUETOOTH ERRORS SO FAR</string>
+  <string name="bt_no_devs">YOU CURRENTLY HAVE NO PAIRED BLUETOOTH
+	DEVICES. WOULD YOU LIKE TO OPEN THE ANDROID SETTINGS PANEL TO ADD
+	ONE OR MORE?</string>
 </resources>

xwords4/android/XWords4/src/org/eehouse/android/xw4/BTInviteDelegate.java

@@ -21,28 +21,31 @@
 package org.eehouse.android.xw4;
 
 import android.app.Activity;
-import android.app.ListActivity;
+import android.app.AlertDialog;
 import android.app.Dialog;
+import android.app.ListActivity;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
+import android.os.Handler;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.AdapterView;
 import android.widget.Button;
-import android.widget.LinearLayout;
 import android.widget.CheckBox;
 import android.widget.CompoundButton;
+import android.widget.LinearLayout;
 import android.widget.ListView;
 import android.widget.TextView;
-import android.os.Handler;
 
 import java.util.HashSet;
 import java.util.Set;
 
 import junit.framework.Assert;
 
+import org.eehouse.android.xw4.DlgDelegate.Action;
+
 public class BTInviteDelegate extends InviteDelegate {
 
     private Activity m_activity;
@@ -120,8 +123,15 @@ public class BTInviteDelegate extends InviteDelegate {
 
     protected void scan()
     {
-        startProgress( R.string.scan_progress_title, R.string.scan_progress );
-        BTService.scan( m_activity );
+        int count = BTService.getPairedCount( m_activity );
+        if ( 0 < count ) {
+            String msg = getString( R.string.scan_progress_fmt, count );
+            startProgress( R.string.scan_progress_title, msg );
+            BTService.scan( m_activity );
+        } else {
+            showConfirmThen( R.string.bt_no_devs, R.string.button_go_settings, 
+                             Action.OPEN_BT_PREFS_ACTION );
+        }
     }
 
     protected void clearSelected()
@@ -196,4 +206,19 @@ public class BTInviteDelegate extends InviteDelegate {
         public String getBTAddr( int indx ) { return m_devAddrs[indx]; }
         public String getBTName( int indx ) { return m_devNames[indx]; }
     }
+
+    // DlgDelegate.DlgClickNotify interface
+    @Override
+    public void dlgButtonClicked( Action action, int which, Object[] params )
+    {
+        switch( action ) {
+        case OPEN_BT_PREFS_ACTION:
+            if ( AlertDialog.BUTTON_POSITIVE == which ) {
+                BTService.openBTSettings( m_activity );
+            }
+            break;
+        default:
+            super.dlgButtonClicked( action, which, params );
+        }
+    }
 }

xwords4/android/XWords4/src/org/eehouse/android/xw4/BTService.java

@@ -20,6 +20,7 @@
 
 package org.eehouse.android.xw4;
 
+import android.app.Activity;
 import android.app.Service;
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothClass;
@@ -156,6 +157,24 @@ public class BTService extends XWService {
         return null != adapter && adapter.isEnabled();
     }
 
+    public static int getPairedCount( Activity activity )
+    {
+        int result = 0;
+        BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
+        if ( null != adapter ) {
+            Set<BluetoothDevice> pairedDevs = adapter.getBondedDevices();
+            result = pairedDevs.size();
+        }
+        return result;
+    }
+
+    public static void openBTSettings( Activity activity )
+    {
+        Intent intent = new Intent();
+        intent.setAction( android.provider.Settings.ACTION_BLUETOOTH_SETTINGS );
+        activity.startActivity( intent ); 
+    }
+
     public static void startService( Context context )
     {
         if ( XWApp.BTSUPPORTED ) {

xwords4/android/XWords4/src/org/eehouse/android/xw4/DelegateBase.java

@@ -417,6 +417,11 @@ public class DelegateBase implements DlgDelegate.DlgClickNotify,
         m_delegate.startProgress( titleID, msgID );
     }
 
+    protected void startProgress( int titleID, String msg )
+    {
+        m_delegate.startProgress( titleID, msg, null );
+    }
+
     protected void startProgress( int titleID, int msgID, OnCancelListener lstnr )
     {
         m_delegate.startProgress( titleID, msgID, lstnr );

xwords4/android/XWords4/src/org/eehouse/android/xw4/DlgDelegate.java

@@ -93,6 +93,9 @@ public class DlgDelegate {
         USE_IMMOBILE_ACTION,
         POST_WARNING_ACTION,
 
+        // BT Invite
+        OPEN_BT_PREFS_ACTION,
+
         // Study list
         SL_CLEAR_ACTION,
         SL_COPY_ACTION,
@@ -355,9 +358,13 @@ public class DlgDelegate {
     }
 
     public void startProgress( int titleID, int msgID, OnCancelListener canLstnr )
+    {
+        startProgress( titleID, LocUtils.getString( m_activity, msgID ), canLstnr );
+    }
+
+    public void startProgress( int titleID, String msg, OnCancelListener canLstnr )
     {
         String title = LocUtils.getString( m_activity, titleID );
-        String msg = LocUtils.getString( m_activity, msgID );
         m_progress = ProgressDialog.show( m_activity, title, msg, true, true );
         
         if ( null != canLstnr ) {