First pass at adding a UI for sharing data via QR Codes. There's now a Share button in the main capture menu which leads to a choice of contacts, bookmarks, and clipboard contents, which will be encoded and shown full screen. Launching the bookmarks picker currently crashes with a permission problem, which I'm investigating.

git-svn-id: https://zxing.googlecode.com/svn/trunk@681 59b500cc-1b3d-0410-9834-0bbf25fbcc57

android/AndroidManifest.xml

@@ -70,9 +70,18 @@ versionName is 2.31, 2.4, or 3.0. -->
         <category android:name="android.intent.category.DEFAULT"/>
       </intent-filter>
     </activity>
+    <activity android:name="ShareActivity"
+              android:label="@string/share_name"
+              android:screenOrientation="user">
+      <intent-filter>
+        <action android:name="com.google.zxing.client.android.SHARE"/>
+        <category android:name="android.intent.category.DEFAULT"/>
+      </intent-filter>
+    </activity>
   </application>
   <uses-permission android:name="android.permission.CAMERA"/>
   <uses-permission android:name="android.permission.READ_CONTACTS"/>
   <uses-permission android:name="android.permission.WRITE_CONTACTS"/>
   <uses-permission android:name="android.permission.INTERNET"/>
+  <uses-permission android:name="android.permission.ACCESS_BROWSER_HISTORY_BOOKMARKS"/>
 </manifest>

android/res/layout/share.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright (C) 2008 ZXing authors
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:id="@+id/encode_view"
+              android:layout_width="fill_parent"
+              android:layout_height="fill_parent"
+              android:background="@color/share_view"
+              android:orientation="vertical"
+              android:gravity="center"
+              android:padding="8px">
+
+  <TextView
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"
+            android:gravity="left"
+            android:textColor="@color/share_text"
+            android:textSize="18.0sp"
+            android:text="@string/msg_share_explanation"
+            android:paddingBottom="16px"/>
+
+  <Button android:id="@+id/contact_button"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:text="@string/button_share_contact"/>
+
+  <Button android:id="@+id/bookmark_button"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:text="@string/button_share_bookmark"/>
+
+  <Button android:id="@+id/clipboard_button"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:text="@string/button_share_clipboard"/>
+
+</LinearLayout>

android/res/values/colors.xml

@@ -28,6 +28,8 @@
   <color name="sbc_layout_view">#ffffffff</color>
   <color name="sbc_page_number_text">#ff000000</color>
   <color name="sbc_snippet_text">#ff4b4b4b</color>
+  <color name="share_text">#ff000000</color>
+  <color name="share_view">#ffffffff</color>
   <color name="status_view">#50000000</color>
   <color name="status_text">#ffffffff</color>
   <color name="transparent">#00000000</color>

android/res/values/strings.xml

@@ -21,6 +21,7 @@
   <string name="button_add_contact">Add contact</string>
   <string name="button_book_search">Open Book Search</string>
   <string name="button_cancel">Cancel</string>
+  <string name="button_clipboard_empty">Clipboard empty</string>
   <string name="button_dial">Dial number</string>
   <string name="button_email">Send email</string>
   <string name="button_get_directions">Get directions</string>
@@ -29,8 +30,11 @@
   <string name="button_open_browser">Open browser</string>
   <string name="button_product_search">Open Product Search</string>
   <string name="button_search_book_contents">Search book contents</string>
+  <string name="button_share_bookmark">Share bookmark</string>
   <string name="button_share_by_email">Share via email</string>
   <string name="button_share_by_sms">Share via SMS</string>
+  <string name="button_share_clipboard">Share clipboard</string>
+  <string name="button_share_contact">Share contact</string>
   <string name="button_show_map">Show map</string>
   <string name="button_sms">Send SMS</string>
   <string name="button_web_search">Web search</string>
@@ -45,6 +49,7 @@
   <string name="menu_about">About</string>
   <string name="menu_help">Help</string>
   <string name="menu_settings">Settings</string>
+  <string name="menu_share">Share</string>
 
   <string name="msg_about">Based on the open source ZXing Barcode Library</string>
   <string name="msg_default_contents">Contents</string>
@@ -66,8 +71,10 @@
   <string name="msg_sbc_page">Page</string>
   <string name="msg_sbc_snippet_unavailable">Snippet not available</string>
   <string name="msg_sbc_unknown_page">Unknown page</string>
-  <string name="msg_searching_book">Searching book\u2026</string>
-  <string name="msg_share_barcode">Here\'s the contents of a barcode I scanned</string>
+  <string name="msg_sbc_searching_book">Searching book\u2026</string>
+  <string name="msg_share_explanation">You can share data with a friend by displaying a barcode on
+    your screen, and letting them scan it with their phone.</string>
+  <string name="msg_share_subject_line">Here\'s the contents of a barcode I scanned</string>
 
   <string name="preferences_decode_1D_title">Decode 1D barcodes</string>
   <string name="preferences_decode_QR_title">Decode QR Codes</string>
@@ -88,6 +95,7 @@
   <string name="result_uri">Found URL</string>
 
   <string name="sbc_name">Google Book Search</string>
+  <string name="share_name">Share via barcode</string>
 
   <string name="title_about">About Barcode Scanner</string>
   <string name="title_help">Help</string>

android/src/com/google/zxing/client/android/BarcodesCaptureActivity.java

@@ -51,9 +51,9 @@ import android.widget.ImageView;
 import android.widget.TextView;
 import com.google.zxing.Result;
 import com.google.zxing.ResultPoint;
+import com.google.zxing.client.android.result.ResultButtonListener;
 import com.google.zxing.client.android.result.ResultHandler;
 import com.google.zxing.client.android.result.ResultHandlerFactory;
-import com.google.zxing.client.android.result.ResultButtonListener;
 
 import java.io.IOException;
 
@@ -63,9 +63,10 @@ import java.io.IOException;
  */
 public final class BarcodesCaptureActivity extends Activity implements SurfaceHolder.Callback {
 
-  private static final int SETTINGS_ID = Menu.FIRST;
-  private static final int HELP_ID = Menu.FIRST + 1;
-  private static final int ABOUT_ID = Menu.FIRST + 2;
+  private static final int SHARE_ID = Menu.FIRST;
+  private static final int SETTINGS_ID = Menu.FIRST + 1;
+  private static final int HELP_ID = Menu.FIRST + 2;
+  private static final int ABOUT_ID = Menu.FIRST + 3;
 
   private static final int MAX_RESULT_IMAGE_SIZE = 150;
   private static final int INTENT_RESULT_DURATION = 1500;
@@ -167,6 +168,7 @@ public final class BarcodesCaptureActivity extends Activity implements SurfaceHo
   @Override
   public boolean onCreateOptionsMenu(Menu menu) {
     super.onCreateOptionsMenu(menu);
+    menu.add(0, SHARE_ID, 0, R.string.menu_share).setIcon(R.drawable.share_barcode);
     menu.add(0, SETTINGS_ID, 0, R.string.menu_settings)
         .setIcon(android.R.drawable.ic_menu_preferences);
     menu.add(0, HELP_ID, 0, R.string.menu_help)
@@ -179,6 +181,12 @@ public final class BarcodesCaptureActivity extends Activity implements SurfaceHo
   @Override
   public boolean onOptionsItemSelected(MenuItem item) {
     switch (item.getItemId()) {
+      case SHARE_ID: {
+        Intent intent = new Intent(Intent.ACTION_VIEW);
+        intent.setClassName(this, ShareActivity.class.getName());
+        startActivity(intent);
+        break;
+      }
       case SETTINGS_ID: {
         Intent intent = new Intent(Intent.ACTION_VIEW);
         intent.setClassName(this, BarcodesPreferenceActivity.class.getName());

android/src/com/google/zxing/client/android/Intents.java

@@ -109,4 +109,12 @@ public final class Intents {
     public static final String QUERY = "QUERY";
   }
 
+  public static final class Share {
+    /**
+     * Give the user a choice of items to encode as a barcode, then render it as a QR Code and
+     * display onscreen for a friend to scan with their phone.
+     */
+    public static final String ACTION = "com.google.zxing.client.android.SHARE";
+  }
+
 }

android/src/com/google/zxing/client/android/SearchBookContentsActivity.java

@@ -160,7 +160,7 @@ public class SearchBookContentsActivity extends Activity {
       if (query != null && query.length() > 0) {
         mNetworkThread = new NetworkThread(mISBN, query, mHandler);
         mNetworkThread.start();
-        mHeaderView.setText(R.string.msg_searching_book);
+        mHeaderView.setText(R.string.msg_sbc_searching_book);
         mResultListView.setAdapter(null);
         mQueryTextView.setEnabled(false);
         mQueryButton.setEnabled(false);

android/src/com/google/zxing/client/android/ShareActivity.java

@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2008 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.zxing.client.android;
+
+import android.app.Activity;
+import android.content.ComponentName;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Bundle;
+import android.provider.Contacts;
+import android.text.ClipboardManager;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+
+public final class ShareActivity extends Activity {
+
+  private static final int PICK_BOOKMARK = 0;
+  private static final int PICK_CONTACT = 1;
+
+  private static final int METHODS_ID_COLUMN = 0;
+  private static final int METHODS_KIND_COLUMN = 1;
+  private static final int METHODS_DATA_COLUMN = 2;
+
+  private static final String[] METHODS_PROJECTION = new String[] {
+    Contacts.People.ContactMethods._ID, // 0
+    Contacts.People.ContactMethods.KIND, // 1
+    Contacts.People.ContactMethods.DATA, // 2
+  };
+
+  private Button mContactButton;
+  private Button mBookmarkButton;
+  private Button mClipboardButton;
+
+  @Override
+  public void onCreate(Bundle icicle) {
+    super.onCreate(icicle);
+    setContentView(R.layout.share);
+
+    mContactButton = (Button) findViewById(R.id.contact_button);
+    mContactButton.setOnClickListener(mContactListener);
+    mBookmarkButton = (Button) findViewById(R.id.bookmark_button);
+    mBookmarkButton.setOnClickListener(mBookmarkListener);
+    mClipboardButton = (Button) findViewById(R.id.clipboard_button);
+    mClipboardButton.setOnClickListener(mClipboardListener);
+  }
+
+  @Override
+  protected void onResume() {
+    super.onResume();
+
+    ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
+    if (clipboard.hasText()) {
+      mClipboardButton.setEnabled(true);
+      mClipboardButton.setText(R.string.button_share_clipboard);
+    } else {
+      mClipboardButton.setEnabled(false);
+      mClipboardButton.setText(R.string.button_clipboard_empty);
+    }
+  }
+
+  @Override
+  protected void onPause() {
+    super.onPause();
+  }
+
+  private final Button.OnClickListener mContactListener = new Button.OnClickListener() {
+    public void onClick(View v) {
+      startActivityForResult(new Intent(Intent.ACTION_PICK, Contacts.People.CONTENT_URI),
+          PICK_CONTACT);
+    }
+  };
+
+  private final Button.OnClickListener mBookmarkListener = new Button.OnClickListener() {
+    public void onClick(View v) {
+      // FIXME: Not working yet
+      Intent intent = new Intent();
+      intent.setComponent(new ComponentName("com.android.browser",
+          "com.android.browser.BrowserBookmarksPage"));
+      startActivityForResult(intent, PICK_BOOKMARK);
+    }
+  };
+
+  private final Button.OnClickListener mClipboardListener = new Button.OnClickListener() {
+    public void onClick(View v) {
+      ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
+      // Should always be true, because we grey out the clipboard button in onResume() if it's empty
+      if (clipboard.hasText()) {
+        Intent intent = new Intent(Intents.Encode.ACTION);
+        intent.putExtra(Intents.Encode.TYPE, Contents.Type.TEXT);
+        intent.putExtra(Intents.Encode.DATA, clipboard.getText());
+        startActivity(intent);
+      }
+    }
+  };
+
+  @Override
+  public void onActivityResult(int requestCode, int resultCode, Intent intent) {
+    if (resultCode == RESULT_OK) {
+      switch (requestCode) {
+        case PICK_BOOKMARK:
+          // FIXME: Implement
+          Log.v("BOOKMARK", intent.toString());
+          break;
+        case PICK_CONTACT:
+          // Data field is content://contacts/people/984
+          showContactAsBarcode(intent.getData());
+          break;
+      }
+    }
+  }
+
+  /**
+   * Takes a contact Uri and does the necessary database lookups to retrieve that person's info,
+   * then sends an Encode intent to render it as a QR Code.
+   *  
+   * @param contactUri A Uri of the form content://contacts/people/17
+   */
+  private void showContactAsBarcode(Uri contactUri) {
+    ContentResolver resolver = getContentResolver();
+    Cursor contactCursor = resolver.query(contactUri, null, null, null, null);
+    Bundle bundle = new Bundle();
+    if (contactCursor != null && contactCursor.moveToFirst()) {
+      int nameColumn = contactCursor.getColumnIndex(Contacts.People.NAME);
+      String name = contactCursor.getString(nameColumn);
+      if (name == null || name.length() == 0) {
+        // TODO: Show error
+        return;
+      }
+      bundle.putString(Contacts.Intents.Insert.NAME, name);
+
+      int phoneColumn = contactCursor.getColumnIndex(Contacts.People.NUMBER);
+      bundle.putString(Contacts.Intents.Insert.PHONE, contactCursor.getString(phoneColumn));
+      contactCursor.close();
+
+      Uri methodsUri = Uri.withAppendedPath(contactUri,
+          Contacts.People.ContactMethods.CONTENT_DIRECTORY);
+      Cursor methodsCursor = resolver.query(methodsUri, METHODS_PROJECTION, null, null, null);
+      boolean foundEmail = false;
+      boolean foundPostal = false;
+      if (methodsCursor != null) {
+        while (methodsCursor.moveToNext()) {
+          final int kind = methodsCursor.getInt(METHODS_KIND_COLUMN);
+          final String data = methodsCursor.getString(METHODS_DATA_COLUMN);
+          switch (kind) {
+            case Contacts.KIND_EMAIL:
+              if (!foundEmail) {
+                // Use the first address encountered, since we can't encode multiple addresses
+                bundle.putString(Contacts.Intents.Insert.EMAIL, data);
+                foundEmail = true;
+              }
+              break;
+            case Contacts.KIND_POSTAL:
+              if (!foundPostal) {
+                bundle.putString(Contacts.Intents.Insert.POSTAL, data);
+                foundPostal = true;
+              }
+              break;
+          }
+        }
+        methodsCursor.close();
+      }
+
+      Intent intent = new Intent(Intents.Encode.ACTION);
+      intent.putExtra(Intents.Encode.TYPE, Contents.Type.CONTACT);
+      intent.putExtra(Intents.Encode.DATA, bundle);
+      startActivity(intent);
+    }
+  }
+
+}

android/src/com/google/zxing/client/android/result/ResultHandler.java

@@ -148,7 +148,7 @@ public abstract class ResultHandler {
   }
 
   public void shareByEmail(String contents) {
-    sendEmailFromUri("mailto:", mActivity.getString(R.string.msg_share_barcode), contents);
+    sendEmailFromUri("mailto:", mActivity.getString(R.string.msg_share_subject_line), contents);
   }
 
   public void sendEmail(String address, String subject, String body) {
@@ -163,7 +163,7 @@ public abstract class ResultHandler {
   }
 
   public void shareBySMS(String contents) {
-    sendSMSFromUri("smsto:", mActivity.getString(R.string.msg_share_barcode) + ":\n" + contents);
+    sendSMSFromUri("smsto:", mActivity.getString(R.string.msg_share_subject_line) + ":\n" + contents);
   }
 
   public void sendSMS(String phoneNumber, String body) {

androidtest/res/layout/test.xml

@@ -84,5 +84,9 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="@string/encode_bad_data"/>
+    <Button android:id="@+id/share_via_barcode"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/share_via_barcode"/>
   </TableRow>
 </TableLayout>

androidtest/res/values/strings.xml

@@ -34,6 +34,7 @@
   <string name="status_message">Press the shutter button to save images to the SD card for testing purposes. Press DPAD_CENTER to trigger autofocus.</string>
   <string name="save_succeeded">Save succeeded</string>
   <string name="save_failed">Save failed - is the SD card installed?</string>
+  <string name="share_via_barcode">Share via barcode</string>
 
   <string name="benchmark_name">ZXing Benchmark</string>
   <string name="benchmark_help">Place images in /sdcard/zxingbenchmark, then check \"adb logcat\" for results. Turn on Airplane Mode first for more reliable results.</string>

androidtest/src/com/google/zxing/client/androidtest/ZXingTestActivity.java

@@ -70,6 +70,9 @@ public class ZXingTestActivity extends Activity {
 
     Button encode_bad_data = (Button) findViewById(R.id.encode_bad_data);
     encode_bad_data.setOnClickListener(mEncodeBadData);
+
+    Button share_via_barcode = (Button) findViewById(R.id.share_via_barcode);
+    share_via_barcode.setOnClickListener(mShareViaBarcode);
   }
 
   public Button.OnClickListener mTestCamera = new Button.OnClickListener() {
@@ -183,6 +186,12 @@ public class ZXingTestActivity extends Activity {
     }
   };
 
+  public Button.OnClickListener mShareViaBarcode = new Button.OnClickListener() {
+    public void onClick(View v) {
+      startActivity(new Intent("com.google.zxing.client.android.SHARE"));
+    }
+  };
+
   private void showDialog(int title, String message) {
     AlertDialog.Builder builder = new AlertDialog.Builder(this);
     builder.setTitle(title);