/* * 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 com.google.zxing.BarcodeFormat; import com.google.zxing.Result; import com.google.zxing.ResultMetadataType; import com.google.zxing.ResultPoint; import com.google.zxing.client.android.camera.CameraManager; import com.google.zxing.client.android.history.HistoryManager; 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.supplement.SupplementalInfoRetriever; import com.google.zxing.client.android.share.ShareActivity; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.Rect; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.preference.PreferenceManager; import android.text.ClipboardManager; import android.util.Log; import android.util.TypedValue; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.ViewGroup; import android.view.Window; import android.view.WindowManager; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import java.io.IOException; import java.text.DateFormat; import java.util.Date; import java.util.HashSet; import java.util.Map; import java.util.Set; import java.util.Vector; import org.oskardroid.pg.R; /** * The barcode reader activity itself. This is loosely based on the CameraPreview * example included in the Android SDK. * * @author dswitkin@google.com (Daniel Switkin) * @author Sean Owen */ public final class CaptureActivity extends Activity implements SurfaceHolder.Callback { private static final String TAG = CaptureActivity.class.getSimpleName(); private static final int SHARE_ID = Menu.FIRST; private static final int HISTORY_ID = Menu.FIRST + 1; private static final int SETTINGS_ID = Menu.FIRST + 2; private static final int HELP_ID = Menu.FIRST + 3; private static final int ABOUT_ID = Menu.FIRST + 4; private static final long INTENT_RESULT_DURATION = 1500L; private static final long BULK_MODE_SCAN_DELAY_MS = 1000L; private static final String PACKAGE_NAME = "com.google.zxing.client.android"; private static final String PRODUCT_SEARCH_URL_PREFIX = "http://www.google"; private static final String PRODUCT_SEARCH_URL_SUFFIX = "/m/products/scan"; private static final String ZXING_URL = "http://zxing.appspot.com/scan"; private static final String RETURN_CODE_PLACEHOLDER = "{CODE}"; private static final String RETURN_URL_PARAM = "ret"; private static final Set<ResultMetadataType> DISPLAYABLE_METADATA_TYPES; static { DISPLAYABLE_METADATA_TYPES = new HashSet<ResultMetadataType>(5); DISPLAYABLE_METADATA_TYPES.add(ResultMetadataType.ISSUE_NUMBER); DISPLAYABLE_METADATA_TYPES.add(ResultMetadataType.SUGGESTED_PRICE); DISPLAYABLE_METADATA_TYPES.add(ResultMetadataType.ERROR_CORRECTION_LEVEL); DISPLAYABLE_METADATA_TYPES.add(ResultMetadataType.POSSIBLE_COUNTRY); } private enum Source { NATIVE_APP_INTENT, PRODUCT_SEARCH_LINK, ZXING_LINK, NONE } private CaptureActivityHandler handler; private ViewfinderView viewfinderView; private TextView statusView; private View resultView; private Result lastResult; private boolean hasSurface; private boolean copyToClipboard; private Source source; private String sourceUrl; private String returnUrlTemplate; private Vector<BarcodeFormat> decodeFormats; private String characterSet; private String versionName; private HistoryManager historyManager; private InactivityTimer inactivityTimer; private BeepManager beepManager; private final DialogInterface.OnClickListener aboutListener = new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) { Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.zxing_url))); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); startActivity(intent); } }; ViewfinderView getViewfinderView() { return viewfinderView; } public Handler getHandler() { return handler; } @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); Window window = getWindow(); window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); setContentView(R.layout.capture); CameraManager.init(getApplication()); viewfinderView = (ViewfinderView) findViewById(R.id.viewfinder_view); resultView = findViewById(R.id.result_view); statusView = (TextView) findViewById(R.id.status_view); handler = null; lastResult = null; hasSurface = false; historyManager = new HistoryManager(this); historyManager.trimHistory(); inactivityTimer = new InactivityTimer(this); beepManager = new BeepManager(this); // showHelpOnFirstLaunch(); } @Override protected void onResume() { super.onResume(); resetStatusView(); SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view); SurfaceHolder surfaceHolder = surfaceView.getHolder(); if (hasSurface) { // The activity was paused but not stopped, so the surface still exists. Therefore // surfaceCreated() won't be called, so init the camera here. initCamera(surfaceHolder); } else { // Install the callback and wait for surfaceCreated() to init the camera. surfaceHolder.addCallback(this); surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } Intent intent = getIntent(); String action = intent == null ? null : intent.getAction(); String dataString = intent == null ? null : intent.getDataString(); if (intent != null && action != null) { if (action.equals(Intents.Scan.ACTION)) { // Scan the formats the intent requested, and return the result to the calling activity. source = Source.NATIVE_APP_INTENT; decodeFormats = DecodeFormatManager.parseDecodeFormats(intent); if (intent.hasExtra(Intents.Scan.WIDTH) && intent.hasExtra(Intents.Scan.HEIGHT)) { int width = intent.getIntExtra(Intents.Scan.WIDTH, 0); int height = intent.getIntExtra(Intents.Scan.HEIGHT, 0); if (width > 0 && height > 0) { CameraManager.get().setManualFramingRect(width, height); } } } else if (dataString != null && dataString.contains(PRODUCT_SEARCH_URL_PREFIX) && dataString.contains(PRODUCT_SEARCH_URL_SUFFIX)) { // Scan only products and send the result to mobile Product Search. source = Source.PRODUCT_SEARCH_LINK; sourceUrl = dataString; decodeFormats = DecodeFormatManager.PRODUCT_FORMATS; } else if (dataString != null && dataString.startsWith(ZXING_URL)) { // Scan formats requested in query string (all formats if none specified). // If a return URL is specified, send the results there. Otherwise, handle it ourselves. source = Source.ZXING_LINK; sourceUrl = dataString; Uri inputUri = Uri.parse(sourceUrl); returnUrlTemplate = inputUri.getQueryParameter(RETURN_URL_PARAM); decodeFormats = DecodeFormatManager.parseDecodeFormats(inputUri); } else { // Scan all formats and handle the results ourselves (launched from Home). source = Source.NONE; decodeFormats = null; } characterSet = intent.getStringExtra(Intents.Scan.CHARACTER_SET); } else { source = Source.NONE; decodeFormats = null; characterSet = null; } SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); copyToClipboard = prefs.getBoolean(PreferencesActivity.KEY_COPY_TO_CLIPBOARD, true) && (intent == null || intent.getBooleanExtra(Intents.Scan.SAVE_HISTORY, true)); beepManager.updatePrefs(); inactivityTimer.onResume(); } @Override protected void onPause() { super.onPause(); if (handler != null) { handler.quitSynchronously(); handler = null; } inactivityTimer.onPause(); CameraManager.get().closeDriver(); } @Override protected void onDestroy() { inactivityTimer.shutdown(); super.onDestroy(); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { if (source == Source.NATIVE_APP_INTENT) { setResult(RESULT_CANCELED); finish(); return true; } else if ((source == Source.NONE || source == Source.ZXING_LINK) && lastResult != null) { resetStatusView(); if (handler != null) { handler.sendEmptyMessage(R.id.restart_preview); } return true; } } else if (keyCode == KeyEvent.KEYCODE_FOCUS || keyCode == KeyEvent.KEYCODE_CAMERA) { // Handle these events so they don't launch the Camera app return true; } return super.onKeyDown(keyCode, event); } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); menu.add(0, SHARE_ID, 0, R.string.menu_share) .setIcon(android.R.drawable.ic_menu_share); menu.add(0, HISTORY_ID, 0, R.string.menu_history) .setIcon(android.R.drawable.ic_menu_recent_history); 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) .setIcon(android.R.drawable.ic_menu_help); menu.add(0, ABOUT_ID, 0, R.string.menu_about) .setIcon(android.R.drawable.ic_menu_info_details); return true; } // Don't display the share menu item if the result overlay is showing. @Override public boolean onPrepareOptionsMenu(Menu menu) { super.onPrepareOptionsMenu(menu); menu.findItem(SHARE_ID).setVisible(lastResult == null); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case SHARE_ID: { Intent intent = new Intent(Intent.ACTION_VIEW); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); intent.setClassName(this, ShareActivity.class.getName()); startActivity(intent); break; } case HISTORY_ID: { AlertDialog historyAlert = historyManager.buildAlert(); historyAlert.show(); break; } case SETTINGS_ID: { Intent intent = new Intent(Intent.ACTION_VIEW); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); intent.setClassName(this, PreferencesActivity.class.getName()); startActivity(intent); break; } case HELP_ID: { Intent intent = new Intent(Intent.ACTION_VIEW); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); intent.setClassName(this, HelpActivity.class.getName()); startActivity(intent); break; } case ABOUT_ID: AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(getString(R.string.title_about) + versionName); builder.setMessage(getString(R.string.msg_about) + "\n\n" + getString(R.string.zxing_url)); builder.setIcon(R.drawable.launcher_icon); builder.setPositiveButton(R.string.button_open_browser, aboutListener); builder.setNegativeButton(R.string.button_cancel, null); builder.show(); break; } return super.onOptionsItemSelected(item); } public void surfaceCreated(SurfaceHolder holder) { if (!hasSurface) { hasSurface = true; initCamera(holder); } } public void surfaceDestroyed(SurfaceHolder holder) { hasSurface = false; } public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } /** * A valid barcode has been found, so give an indication of success and show the results. * * @param rawResult The contents of the barcode. * @param barcode A greyscale bitmap of the camera data which was decoded. */ public void handleDecode(Result rawResult, Bitmap barcode) { inactivityTimer.onActivity(); lastResult = rawResult; ResultHandler resultHandler = ResultHandlerFactory.makeResultHandler(this, rawResult); historyManager.addHistoryItem(rawResult, resultHandler); if (barcode == null) { // This is from history -- no saved barcode handleDecodeInternally(rawResult, resultHandler, null); } else { beepManager.playBeepSoundAndVibrate(); drawResultPoints(barcode, rawResult); switch (source) { case NATIVE_APP_INTENT: case PRODUCT_SEARCH_LINK: handleDecodeExternally(rawResult, resultHandler, barcode); break; case ZXING_LINK: if (returnUrlTemplate == null){ handleDecodeInternally(rawResult, resultHandler, barcode); } else { handleDecodeExternally(rawResult, resultHandler, barcode); } break; case NONE: SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); if (prefs.getBoolean(PreferencesActivity.KEY_BULK_MODE, false)) { Toast.makeText(this, R.string.msg_bulk_mode_scanned, Toast.LENGTH_SHORT).show(); // Wait a moment or else it will scan the same barcode continuously about 3 times if (handler != null) { handler.sendEmptyMessageDelayed(R.id.restart_preview, BULK_MODE_SCAN_DELAY_MS); } resetStatusView(); } else { handleDecodeInternally(rawResult, resultHandler, barcode); } break; } } } /** * Superimpose a line for 1D or dots for 2D to highlight the key features of the barcode. * * @param barcode A bitmap of the captured image. * @param rawResult The decoded results which contains the points to draw. */ private void drawResultPoints(Bitmap barcode, Result rawResult) { ResultPoint[] points = rawResult.getResultPoints(); if (points != null && points.length > 0) { Canvas canvas = new Canvas(barcode); Paint paint = new Paint(); paint.setColor(getResources().getColor(R.color.result_image_border)); paint.setStrokeWidth(3.0f); paint.setStyle(Paint.Style.STROKE); Rect border = new Rect(2, 2, barcode.getWidth() - 2, barcode.getHeight() - 2); canvas.drawRect(border, paint); paint.setColor(getResources().getColor(R.color.result_points)); if (points.length == 2) { paint.setStrokeWidth(4.0f); drawLine(canvas, paint, points[0], points[1]); } else if (points.length == 4 && (rawResult.getBarcodeFormat().equals(BarcodeFormat.UPC_A) || rawResult.getBarcodeFormat().equals(BarcodeFormat.EAN_13))) { // Hacky special case -- draw two lines, for the barcode and metadata drawLine(canvas, paint, points[0], points[1]); drawLine(canvas, paint, points[2], points[3]); } else { paint.setStrokeWidth(10.0f); for (ResultPoint point : points) { canvas.drawPoint(point.getX(), point.getY(), paint); } } } } private static void drawLine(Canvas canvas, Paint paint, ResultPoint a, ResultPoint b) { canvas.drawLine(a.getX(), a.getY(), b.getX(), b.getY(), paint); } // Put up our own UI for how to handle the decoded contents. private void handleDecodeInternally(Result rawResult, ResultHandler resultHandler, Bitmap barcode) { statusView.setVisibility(View.GONE); viewfinderView.setVisibility(View.GONE); resultView.setVisibility(View.VISIBLE); ImageView barcodeImageView = (ImageView) findViewById(R.id.barcode_image_view); if (barcode == null) { barcodeImageView.setImageBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.launcher_icon)); } else { barcodeImageView.setImageBitmap(barcode); } TextView formatTextView = (TextView) findViewById(R.id.format_text_view); formatTextView.setText(rawResult.getBarcodeFormat().toString()); TextView typeTextView = (TextView) findViewById(R.id.type_text_view); typeTextView.setText(resultHandler.getType().toString()); DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT); String formattedTime = formatter.format(new Date(rawResult.getTimestamp())); TextView timeTextView = (TextView) findViewById(R.id.time_text_view); timeTextView.setText(formattedTime); TextView metaTextView = (TextView) findViewById(R.id.meta_text_view); View metaTextViewLabel = findViewById(R.id.meta_text_view_label); metaTextView.setVisibility(View.GONE); metaTextViewLabel.setVisibility(View.GONE); Map<ResultMetadataType,Object> metadata = (Map<ResultMetadataType,Object>) rawResult.getResultMetadata(); if (metadata != null) { StringBuilder metadataText = new StringBuilder(20); for (Map.Entry<ResultMetadataType,Object> entry : metadata.entrySet()) { if (DISPLAYABLE_METADATA_TYPES.contains(entry.getKey())) { metadataText.append(entry.getValue()).append('\n'); } } if (metadataText.length() > 0) { metadataText.setLength(metadataText.length() - 1); metaTextView.setText(metadataText); metaTextView.setVisibility(View.VISIBLE); metaTextViewLabel.setVisibility(View.VISIBLE); } } TextView contentsTextView = (TextView) findViewById(R.id.contents_text_view); CharSequence displayContents = resultHandler.getDisplayContents(); contentsTextView.setText(displayContents); // Crudely scale betweeen 22 and 32 -- bigger font for shorter text int scaledSize = Math.max(22, 32 - displayContents.length() / 4); contentsTextView.setTextSize(TypedValue.COMPLEX_UNIT_SP, scaledSize); TextView supplementTextView = (TextView) findViewById(R.id.contents_supplement_text_view); supplementTextView.setText(""); supplementTextView.setOnClickListener(null); if (PreferenceManager.getDefaultSharedPreferences(this).getBoolean( PreferencesActivity.KEY_SUPPLEMENTAL, true)) { SupplementalInfoRetriever.maybeInvokeRetrieval(supplementTextView, resultHandler.getResult(), handler, this); } int buttonCount = resultHandler.getButtonCount(); ViewGroup buttonView = (ViewGroup) findViewById(R.id.result_button_view); buttonView.requestFocus(); for (int x = 0; x < ResultHandler.MAX_BUTTON_COUNT; x++) { TextView button = (TextView) buttonView.getChildAt(x); if (x < buttonCount) { button.setVisibility(View.VISIBLE); button.setText(resultHandler.getButtonText(x)); button.setOnClickListener(new ResultButtonListener(resultHandler, x)); } else { button.setVisibility(View.GONE); } } if (copyToClipboard && !resultHandler.areContentsSecure()) { ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE); clipboard.setText(displayContents); } } // Briefly show the contents of the barcode, then handle the result outside Barcode Scanner. private void handleDecodeExternally(Result rawResult, ResultHandler resultHandler, Bitmap barcode) { viewfinderView.drawResultBitmap(barcode); // Since this message will only be shown for a second, just tell the user what kind of // barcode was found (e.g. contact info) rather than the full contents, which they won't // have time to read. statusView.setText(getString(resultHandler.getDisplayTitle())); if (copyToClipboard && !resultHandler.areContentsSecure()) { ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE); clipboard.setText(resultHandler.getDisplayContents()); } if (source == Source.NATIVE_APP_INTENT) { // Hand back whatever action they requested - this can be changed to Intents.Scan.ACTION when // the deprecated intent is retired. Intent intent = new Intent(getIntent().getAction()); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); intent.putExtra(Intents.Scan.RESULT, rawResult.toString()); intent.putExtra(Intents.Scan.RESULT_FORMAT, rawResult.getBarcodeFormat().toString()); byte[] rawBytes = rawResult.getRawBytes(); if (rawBytes != null && rawBytes.length > 0) { intent.putExtra(Intents.Scan.RESULT_BYTES, rawBytes); } Message message = Message.obtain(handler, R.id.return_scan_result); message.obj = intent; handler.sendMessageDelayed(message, INTENT_RESULT_DURATION); } else if (source == Source.PRODUCT_SEARCH_LINK) { // Reformulate the URL which triggered us into a query, so that the request goes to the same // TLD as the scan URL. Message message = Message.obtain(handler, R.id.launch_product_query); int end = sourceUrl.lastIndexOf("/scan"); message.obj = sourceUrl.substring(0, end) + "?q=" + resultHandler.getDisplayContents().toString() + "&source=zxing"; handler.sendMessageDelayed(message, INTENT_RESULT_DURATION); } else if (source == Source.ZXING_LINK) { // Replace each occurrence of RETURN_CODE_PLACEHOLDER in the returnUrlTemplate // with the scanned code. This allows both queries and REST-style URLs to work. Message message = Message.obtain(handler, R.id.launch_product_query); message.obj = returnUrlTemplate.replace(RETURN_CODE_PLACEHOLDER, resultHandler.getDisplayContents().toString()); handler.sendMessageDelayed(message, INTENT_RESULT_DURATION); } } /** * We want the help screen to be shown automatically the first time a new version of the app is * run. The easiest way to do this is to check android:versionCode from the manifest, and compare * it to a value stored as a preference. */ private boolean showHelpOnFirstLaunch() { try { PackageInfo info = getPackageManager().getPackageInfo(PACKAGE_NAME, 0); int currentVersion = info.versionCode; // Since we're paying to talk to the PackageManager anyway, it makes sense to cache the app // version name here for display in the about box later. this.versionName = info.versionName; SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); int lastVersion = prefs.getInt(PreferencesActivity.KEY_HELP_VERSION_SHOWN, 0); if (currentVersion > lastVersion) { prefs.edit().putInt(PreferencesActivity.KEY_HELP_VERSION_SHOWN, currentVersion).commit(); Intent intent = new Intent(this, HelpActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); // Show the default page on a clean install, and the what's new page on an upgrade. String page = lastVersion == 0 ? HelpActivity.DEFAULT_PAGE : HelpActivity.WHATS_NEW_PAGE; intent.putExtra(HelpActivity.REQUESTED_PAGE_KEY, page); startActivity(intent); return true; } } catch (PackageManager.NameNotFoundException e) { Log.w(TAG, e); } return false; } private void initCamera(SurfaceHolder surfaceHolder) { try { CameraManager.get().openDriver(surfaceHolder); // Creating the handler starts the preview, which can also throw a RuntimeException. if (handler == null) { handler = new CaptureActivityHandler(this, decodeFormats, characterSet); } } catch (IOException ioe) { Log.w(TAG, ioe); displayFrameworkBugMessageAndExit(); } catch (RuntimeException e) { // Barcode Scanner has seen crashes in the wild of this variety: // java.?lang.?RuntimeException: Fail to connect to camera service Log.w(TAG, "Unexpected error initializating camera", e); displayFrameworkBugMessageAndExit(); } } private void displayFrameworkBugMessageAndExit() { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(getString(R.string.app_name)); builder.setMessage(getString(R.string.msg_camera_framework_bug)); builder.setPositiveButton(R.string.button_ok, new FinishListener(this)); builder.setOnCancelListener(new FinishListener(this)); builder.show(); } private void resetStatusView() { resultView.setVisibility(View.GONE); statusView.setText(R.string.msg_default_status); statusView.setVisibility(View.VISIBLE); viewfinderView.setVisibility(View.VISIBLE); lastResult = null; } public void drawViewfinder() { viewfinderView.drawViewfinder(); } }