From d789a50de494a81d13d9fd69e3ac49a75ef61301 Mon Sep 17 00:00:00 2001
From: Keith Holliday <krh121791@gmail.com>
Date: Thu, 11 Aug 2016 17:00:49 -0500
Subject: [PATCH] Added download button

---
 Habitica/res/layout/fragment_group_info.xml   | 10 +++++
 .../social/GroupInformationFragment.java      | 43 +++++++++++++++++++
 2 files changed, 53 insertions(+)

diff --git a/Habitica/res/layout/fragment_group_info.xml b/Habitica/res/layout/fragment_group_info.xml
index 0b5c4d199..9169f10f7 100644
--- a/Habitica/res/layout/fragment_group_info.xml
+++ b/Habitica/res/layout/fragment_group_info.xml
@@ -66,6 +66,16 @@
                         android:id="@+id/QRImageView"
                         android:layout_gravity="center_horizontal|bottom" />
 
+                    <Button
+                        android:id="@+id/QRDownloadButton"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="Download"
+                        style="@style/Widget.AppCompat.Button.Colored"
+                        android:layout_margin="20dp"
+                        android:layout_gravity="center_horizontal|bottom"
+                        />
+
                 </LinearLayout>
             </android.support.v7.widget.CardView>
 
diff --git a/Habitica/src/main/java/com/habitrpg/android/habitica/ui/fragments/social/GroupInformationFragment.java b/Habitica/src/main/java/com/habitrpg/android/habitica/ui/fragments/social/GroupInformationFragment.java
index 45f8b249f..11fccc819 100644
--- a/Habitica/src/main/java/com/habitrpg/android/habitica/ui/fragments/social/GroupInformationFragment.java
+++ b/Habitica/src/main/java/com/habitrpg/android/habitica/ui/fragments/social/GroupInformationFragment.java
@@ -24,11 +24,23 @@ import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Button;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import net.glxn.qrgen.android.QRCode;
+import net.glxn.qrgen.core.image.ImageType;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.channels.FileChannel;
 
 import javax.inject.Inject;
 
@@ -52,6 +64,9 @@ public class GroupInformationFragment extends BaseFragment {
     @BindView(R.id.QRImageView)
     ImageView qrImageView;
 
+    @BindView(R.id.QRDownloadButton)
+    Button qRDownloadButton;
+
     private View view;
     private Group group;
     private HabitRPGUser user;
@@ -313,5 +328,33 @@ public class GroupInformationFragment extends BaseFragment {
         if (qrImageView != null) {
             qrImageView.setImageBitmap(myBitmap);
         }
+
+        if (qRDownloadButton != null) {
+            qRDownloadButton.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    File path = new File(getActivity().getFilesDir(), "habitrpg-qr-code");
+                    File file = QRCode.from(getString(R.string.SP_userID)).to(ImageType.JPG).file();
+                    file.renameTo(path);
+                    Toast.makeText(getActivity(), "QR code saved at " + path.getPath(),
+                            Toast.LENGTH_LONG).show();
+                }
+            });
+        }
     }
+
+    public static void copyFile(File src, File dst) throws IOException
+    {
+        FileChannel inChannel = new FileInputStream(src).getChannel();
+        FileChannel outChannel = new FileOutputStream(dst).getChannel();
+        try {
+            inChannel.transferTo(0, inChannel.size(), outChannel);
+        } finally {
+            if (inChannel != null)
+                inChannel.close();
+            if (outChannel != null)
+                outChannel.close();
+        }
+    }
+
 }