2 * Copyright (C) 2008 ZXing authors
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package com.google.zxing.client.android;
19 import com.google.zxing.BarcodeFormat;
20 import com.google.zxing.MultiFormatWriter;
21 import com.google.zxing.WriterException;
22 import com.google.zxing.common.ByteMatrix;
24 import android.app.Activity;
25 import android.content.Intent;
26 import android.graphics.Bitmap;
27 import android.os.Bundle;
28 import android.os.Handler;
29 import android.os.Message;
30 import android.provider.Contacts;
31 import android.telephony.PhoneNumberUtils;
32 import android.util.Log;
35 * This class does the work of decoding the user's request and extracting all the data
36 * to be encoded in a QR Code.
38 * @author dswitkin@google.com (Daniel Switkin)
40 public final class QRCodeEncoder {
41 private final Activity activity;
42 private String contents;
43 private String displayContents;
45 private BarcodeFormat format;
47 public QRCodeEncoder(Activity activity, Intent intent) {
48 this.activity = activity;
49 if (!encodeContents(intent)) {
50 throw new IllegalArgumentException("No valid data to encode.");
54 public void requestBarcode(Handler handler, int pixelResolution) {
55 Thread encodeThread = new EncodeThread(contents, handler, pixelResolution,
60 public String getContents() {
64 public String getDisplayContents() {
65 return displayContents;
68 public String getTitle() {
72 public String getFormat() {
73 return format.toString();
76 // It would be nice if the string encoding lived in the core ZXing library,
77 // but we use platform specific code like PhoneNumberUtils, so it can't.
78 private boolean encodeContents(Intent intent) {
83 // default to QR_CODE if no format given
84 String format = intent.getStringExtra(Intents.Encode.FORMAT);
85 if (format == null || format.length() == 0 ||
86 format.equals(Contents.Format.QR_CODE)) {
87 String type = intent.getStringExtra(Intents.Encode.TYPE);
88 if (type == null || type.length() == 0) {
91 this.format = BarcodeFormat.QR_CODE;
92 encodeQRCodeContents(intent, type);
94 String data = intent.getStringExtra(Intents.Encode.DATA);
95 if (data != null && data.length() != 0) {
97 displayContents = data;
98 title = activity.getString(R.string.contents_text);
99 if (format.equals(Contents.Format.CODE_128))
100 this.format = BarcodeFormat.CODE_128;
101 else if (format.equals(Contents.Format.CODE_39))
102 this.format = BarcodeFormat.CODE_39;
103 else if (format.equals(Contents.Format.EAN_8))
104 this.format = BarcodeFormat.EAN_8;
105 else if (format.equals(Contents.Format.EAN_13))
106 this.format = BarcodeFormat.EAN_13;
107 else if (format.equals(Contents.Format.UPC_A))
108 this.format = BarcodeFormat.UPC_A;
109 else if (format.equals(Contents.Format.UPC_E))
110 this.format = BarcodeFormat.UPC_E;
113 return contents != null && contents.length() > 0;
116 private void encodeQRCodeContents(Intent intent, String type) {
117 if (type.equals(Contents.Type.TEXT)) {
118 String data = intent.getStringExtra(Intents.Encode.DATA);
119 if (data != null && data.length() > 0) {
121 displayContents = data;
122 title = activity.getString(R.string.contents_text);
124 } else if (type.equals(Contents.Type.EMAIL)) {
125 String data = intent.getStringExtra(Intents.Encode.DATA);
126 if (data != null && data.length() > 0) {
127 contents = "mailto:" + data;
128 displayContents = data;
129 title = activity.getString(R.string.contents_email);
131 } else if (type.equals(Contents.Type.PHONE)) {
132 String data = intent.getStringExtra(Intents.Encode.DATA);
133 if (data != null && data.length() > 0) {
134 contents = "tel:" + data;
135 displayContents = PhoneNumberUtils.formatNumber(data);
136 title = activity.getString(R.string.contents_phone);
138 } else if (type.equals(Contents.Type.SMS)) {
139 String data = intent.getStringExtra(Intents.Encode.DATA);
140 if (data != null && data.length() > 0) {
141 contents = "sms:" + data;
142 displayContents = PhoneNumberUtils.formatNumber(data);
143 title = activity.getString(R.string.contents_sms);
145 } else if (type.equals(Contents.Type.CONTACT)) {
146 Bundle bundle = intent.getBundleExtra(Intents.Encode.DATA);
147 if (bundle != null) {
148 StringBuilder newContents = new StringBuilder();
149 StringBuilder newDisplayContents = new StringBuilder();
150 newContents.append("MECARD:");
151 String name = bundle.getString(Contacts.Intents.Insert.NAME);
152 if (name != null && name.length() > 0) {
153 newContents.append("N:").append(name).append(';');
154 newDisplayContents.append(name);
156 String address = bundle.getString(Contacts.Intents.Insert.POSTAL);
157 if (address != null && address.length() > 0) {
158 newContents.append("ADR:").append(address).append(';');
159 newDisplayContents.append('\n').append(address);
161 for (int x = 0; x < Contents.PHONE_KEYS.length; x++) {
162 String phone = bundle.getString(Contents.PHONE_KEYS[x]);
163 if (phone != null && phone.length() > 0) {
164 newContents.append("TEL:").append(phone).append(';');
165 newDisplayContents.append('\n').append(PhoneNumberUtils.formatNumber(phone));
168 for (int x = 0; x < Contents.EMAIL_KEYS.length; x++) {
169 String email = bundle.getString(Contents.EMAIL_KEYS[x]);
170 if (email != null && email.length() > 0) {
171 newContents.append("EMAIL:").append(email).append(';');
172 newDisplayContents.append('\n').append(email);
175 // Make sure we've encoded at least one field.
176 if (newDisplayContents.length() > 0) {
177 newContents.append(';');
178 contents = newContents.toString();
179 displayContents = newDisplayContents.toString();
180 title = activity.getString(R.string.contents_contact);
183 displayContents = null;
186 } else if (type.equals(Contents.Type.LOCATION)) {
187 Bundle bundle = intent.getBundleExtra(Intents.Encode.DATA);
188 if (bundle != null) {
189 // These must use Bundle.getFloat(), not getDouble(), it's part of the API.
190 float latitude = bundle.getFloat("LAT", Float.MAX_VALUE);
191 float longitude = bundle.getFloat("LONG", Float.MAX_VALUE);
192 if (latitude != Float.MAX_VALUE && longitude != Float.MAX_VALUE) {
193 contents = "geo:" + latitude + ',' + longitude;
194 displayContents = latitude + "," + longitude;
195 title = activity.getString(R.string.contents_location);
201 private static final class EncodeThread extends Thread {
202 private static final String TAG = "EncodeThread";
204 private final String contents;
205 private final Handler handler;
206 private final int pixelResolution;
207 private final BarcodeFormat format;
209 EncodeThread(String contents, Handler handler, int pixelResolution,
210 BarcodeFormat format) {
211 this.contents = contents;
212 this.handler = handler;
213 this.pixelResolution = pixelResolution;
214 this.format = format;
220 ByteMatrix result = new MultiFormatWriter().encode(contents, format,
221 pixelResolution, pixelResolution);
222 int width = result.getWidth();
223 int height = result.getHeight();
224 byte[][] array = result.getArray();
225 int[] pixels = new int[width * height];
226 for (int y = 0; y < height; y++) {
227 for (int x = 0; x < width; x++) {
228 int grey = array[y][x] & 0xff;
229 // pixels[y * width + x] = (0xff << 24) | (grey << 16) | (grey << 8) | grey;
230 pixels[y * width + x] = 0xff000000 | (0x00010101 * grey);
234 Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
235 bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
236 Message message = Message.obtain(handler, R.id.encode_succeeded);
237 message.obj = bitmap;
238 message.sendToTarget();
239 } catch (WriterException e) {
240 Log.e(TAG, e.toString());
241 Message message = Message.obtain(handler, R.id.encode_failed);
242 message.sendToTarget();
243 } catch (IllegalArgumentException e) {
244 Log.e(TAG, e.toString());
245 Message message = Message.obtain(handler, R.id.encode_failed);
246 message.sendToTarget();