/* * 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.usai.redant.photo; import com.google.zxing.BarcodeFormat; import com.google.zxing.DecodeHintType; import com.google.zxing.Result; import com.google.zxing.ResultPoint; import com.google.zxing.client.result.ResultParser; import com.usai.redant.camera.CameraManager; import com.usai.util.dbgUtil; import android.app.Activity; import android.app.AlertDialog; import android.content.Intent; import android.content.pm.ActivityInfo; //import android.content.SharedPreferences; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.preference.PreferenceManager; import android.util.Log; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.view.WindowManager; import android.widget.Button; import android.widget.TextView; import java.io.IOException; import java.util.Collection; import java.util.Map; import java.util.Timer; import java.util.TimerTask; /** * This activity opens the camera and does the actual scanning on a background * thread. It draws a viewfinder to help the user place the barcode correctly, * shows feedback as the image processing is happening, and then overlays the * results when a scan is successful. * * @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 long DEFAULT_INTENT_RESULT_DURATION_MS = 1500L; // private static final long BULK_MODE_SCAN_DELAY_MS = 1000L; // private static final String[] ZXING_URLS = { // "http://zxing.appspot.com/scan", "zxing://scan/" }; // public static final int HISTORY_REQUEST_CODE = 0x0000bacc; // private static final Collection // DISPLAYABLE_METADATA_TYPES = // EnumSet.of(ResultMetadataType.ISSUE_NUMBER, // ResultMetadataType.SUGGESTED_PRICE, // ResultMetadataType.ERROR_CORRECTION_LEVEL, // ResultMetadataType.POSSIBLE_COUNTRY); private CameraManager cameraManager; private CaptureActivityHandler handler; private Result savedResultToShow; private ViewfinderView viewfinderView; private TextView statusView; // private View resultView; private Result lastResult; private boolean hasSurface; // private boolean copyToClipboard; // private IntentSource source; // private String sourceUrl; // private ScanFromWebPageManager scanFromWebPageManager; private Collection decodeFormats; private Map decodeHints; private String characterSet; // private HistoryManager historyManager; private InactivityTimer inactivityTimer; private BeepManager beepManager; private AmbientLightManager ambientLightManager; ViewfinderView getViewfinderView() { return viewfinderView; } public Handler getHandler() { return handler; } CameraManager getCameraManager() { return cameraManager; } Button swith_button; @Override public void onCreate(Bundle icicle) { dbgUtil.Logd(TAG, "==============>CaptureActivity created!"); super.onCreate(icicle); Window window = getWindow(); window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); setContentView(R.layout.capture); swith_button = (Button) findViewById(R.id.btn_switch); swith_button.setTag("false"); swith_button.setBackgroundColor(getResources().getColor( R.color.message_fail)); swith_button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // inactivityTimer.onPause(); if (Boolean.parseBoolean(v.getTag().toString()) == false) { // inactivityTimer.onResume(); v.setTag("true"); v.setBackgroundColor(getResources().getColor( R.color.message_success)); } else { // inactivityTimer.onPause(); v.setTag("false"); v.setBackgroundColor(getResources().getColor( R.color.message_fail)); } } }); // setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); hasSurface = false; // historyManager = new HistoryManager(this); // historyManager.trimHistory(); inactivityTimer = new InactivityTimer(this); beepManager = new BeepManager(this); ambientLightManager = new AmbientLightManager(this); // PreferenceManager.setDefaultValues(this, R.xml.preferences, false); Log.d(TAG, "finish oncreate"); } @Override protected void onResume() { super.onResume(); // CameraManager must be initialized here, not in onCreate(). This is // necessary because we don't // want to open the camera driver and measure the screen size if we're // going to show the help on // first launch. That led to bugs where the scanning rectangle was the // wrong size and partially // off screen. cameraManager = new CameraManager(getApplication()); viewfinderView = (ViewfinderView) findViewById(R.id.viewfinder_view); viewfinderView.setCameraManager(cameraManager); // resultView = findViewById(R.id.result_view); statusView = (TextView) findViewById(R.id.status_view); handler = null; lastResult = null; 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); } beepManager.updatePrefs(); ambientLightManager.start(cameraManager); inactivityTimer.onResume(); Intent intent = getIntent(); // SharedPreferences prefs = // PreferenceManager.getDefaultSharedPreferences(this); // copyToClipboard = // prefs.getBoolean(PreferencesActivity.KEY_COPY_TO_CLIPBOARD, true) // && (intent == null || // intent.getBooleanExtra(Intents.Scan.SAVE_HISTORY, true)); // source = IntentSource.NONE; decodeFormats = null; characterSet = null; if (intent != null) { String action = intent.getAction(); // String dataString = intent.getDataString(); if (Intents.Scan.ACTION.equals(action)) { // Scan the formats the intent requested, and return the result // to the calling activity. // source = IntentSource.NATIVE_APP_INTENT; decodeFormats = DecodeFormatManager.parseDecodeFormats(intent); decodeHints = DecodeHintManager.parseDecodeHints(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.setManualFramingRect(width, height); } } String customPromptMessage = intent .getStringExtra(Intents.Scan.PROMPT_MESSAGE); if (customPromptMessage != null) { statusView.setText(customPromptMessage); } } // else if (dataString != null && // dataString.contains("http://www.google") && // dataString.contains("/m/products/scan")) { // // // Scan only products and send the result to mobile Product // Search. // // source = IntentSource.PRODUCT_SEARCH_LINK; // sourceUrl = dataString; // decodeFormats = DecodeFormatManager.PRODUCT_FORMATS; // // } // else if (isZXingURL(dataString)) { // // // 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 = IntentSource.ZXING_LINK; // sourceUrl = dataString; // Uri inputUri = Uri.parse(dataString); // scanFromWebPageManager = new ScanFromWebPageManager(inputUri); // decodeFormats = DecodeFormatManager.parseDecodeFormats(inputUri); // // Allow a sub-set of the hints to be specified by the caller. // decodeHints = DecodeHintManager.parseDecodeHints(inputUri); // // } characterSet = intent.getStringExtra(Intents.Scan.CHARACTER_SET); } } // private static boolean isZXingURL(String dataString) { // if (dataString == null) { // return false; // } // for (String url : ZXING_URLS) { // if (dataString.startsWith(url)) { // return true; // } // } // return false; // } @Override protected void onPause() { if (handler != null) { handler.quitSynchronously(); handler = null; } inactivityTimer.onPause(); ambientLightManager.stop(); cameraManager.closeDriver(); if (!hasSurface) { SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view); SurfaceHolder surfaceHolder = surfaceView.getHolder(); surfaceHolder.removeCallback(this); } super.onPause(); } @Override protected void onDestroy() { inactivityTimer.shutdown(); super.onDestroy(); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { switch (keyCode) { // case KeyEvent.KEYCODE_BACK: // if (source == IntentSource.NATIVE_APP_INTENT) { // setResult(RESULT_CANCELED); // finish(); // return true; // } // if ((source == IntentSource.NONE || source == // IntentSource.ZXING_LINK) && lastResult != null) { // restartPreviewAfterDelay(0L); // return true; // } // break; case KeyEvent.KEYCODE_FOCUS: case KeyEvent.KEYCODE_CAMERA: // Handle these events so they don't launch the Camera app return true; // Use volume up/down to turn on light case KeyEvent.KEYCODE_VOLUME_DOWN: cameraManager.setTorch(false); return true; case KeyEvent.KEYCODE_VOLUME_UP: cameraManager.setTorch(true); return true; } return super.onKeyDown(keyCode, event); } // @Override // public boolean onCreateOptionsMenu(Menu menu) // { // MenuInflater menuInflater = getMenuInflater(); // menuInflater.inflate(R.menu.capture, menu); // return super.onCreateOptionsMenu(menu); // } // // @Override // public boolean onOptionsItemSelected(MenuItem item) // { // Intent intent = new Intent(Intent.ACTION_VIEW); // intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); // switch (item.getItemId()) // { // // case R.id.menu_share: // // intent.setClassName(this, ShareActivity.class.getName()); // // startActivity(intent); // // break; // // case R.id.menu_history: // // intent.setClassName(this, HistoryActivity.class.getName()); // // startActivityForResult(intent, HISTORY_REQUEST_CODE); // // break; // case R.id.menu_settings: // intent.setClassName(this, PreferencesActivity.class.getName()); // startActivity(intent); // break; // // case R.id.menu_help: // // intent.setClassName(this, HelpActivity.class.getName()); // // startActivity(intent); // // break; // default: // return super.onOptionsItemSelected(item); // } // return true; // } // @Override // public void onActivityResult(int requestCode, int resultCode, Intent // intent) { // if (resultCode == RESULT_OK) { // // if (requestCode == HISTORY_REQUEST_CODE) // // { // // int itemNumber = intent.getIntExtra(Intents.History.ITEM_NUMBER, -1); // // if (itemNumber >= 0) { // // HistoryItem historyItem = historyManager.buildHistoryItem(itemNumber); // // decodeOrStoreSavedBitmap(null, historyItem.getResult()); // // } // // } // } // } private void decodeOrStoreSavedBitmap(Bitmap bitmap, Result result) { // Bitmap isn't used yet -- will be used soon if (handler == null) { savedResultToShow = result; } else { if (result != null) { savedResultToShow = result; } if (savedResultToShow != null) { Message message = Message.obtain(handler, R.id.decode_succeeded, savedResultToShow); handler.sendMessage(message); } savedResultToShow = null; } } @Override public void surfaceCreated(SurfaceHolder holder) { if (holder == null) { Log.d(TAG, "*** WARNING *** surfaceCreated() gave us a null surface!"); } if (!hasSurface) { hasSurface = true; initCamera(holder); } } @Override public void surfaceDestroyed(SurfaceHolder holder) { hasSurface = false; } @Override 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 scaleFactor * amount by which thumbnail was scaled * @param barcode * A greyscale bitmap of the camera data which was decoded. */ public void handleDecode(Result rawResult, Bitmap barcode, float scaleFactor) { String tag = swith_button.getTag().toString(); if (Boolean.parseBoolean(tag) == false) { restartPreviewAfterDelay(0L); return; } inactivityTimer.onActivity(); lastResult = rawResult; TextView debugTextView = (TextView) findViewById(R.id.textView1); debugTextView.setText(rawResult.getText()); // ResultHandler resultHandler = // ResultHandlerFactory.makeResultHandler(this, rawResult); Log.i(TAG, "RESULT=========>" + rawResult.getText().toString()); // ParsedResult result = parseResult(rawResult); Log.i(TAG, "HANDLER========>" + ResultParser.parseResult(rawResult).getType().toString()); boolean fromLiveScan = barcode != null; if (fromLiveScan) { // historyManager.addHistoryItem(rawResult, resultHandler); // Then not from history, so beep/vibrate and we have an image to // draw on beepManager.playBeepSoundAndVibrate(); // drawResultPoints(barcode, scaleFactor, rawResult); } Intent result = new Intent(); result.putExtra("pid", rawResult.getText()); setResult(Activity.RESULT_OK, result); finish(); // restartPreviewAfterDelay(1000l); // finish(); // // switch (source) { // case NATIVE_APP_INTENT: // case PRODUCT_SEARCH_LINK: // handleDecodeExternally(rawResult, resultHandler, barcode); // break; // case ZXING_LINK: // if (scanFromWebPageManager == null || // !scanFromWebPageManager.isScanFromWebPage()) { // handleDecodeInternally(rawResult, resultHandler, barcode); // } else { // handleDecodeExternally(rawResult, resultHandler, barcode); // } // break; // case NONE: // SharedPreferences prefs = // PreferenceManager.getDefaultSharedPreferences(this); // if (fromLiveScan && // prefs.getBoolean(PreferencesActivity.KEY_BULK_MODE, false)) { // Toast.makeText(getApplicationContext(), // getResources().getString(R.string.msg_bulk_mode_scanned) + " (" + // rawResult.getText() + ')', // Toast.LENGTH_SHORT).show(); // // Wait a moment or else it will scan the same barcode continuously // about 3 times // restartPreviewAfterDelay(BULK_MODE_SCAN_DELAY_MS); // } 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 scaleFactor * amount by which thumbnail was scaled * @param rawResult * The decoded results which contains the points to draw. */ // private void drawResultPoints(Bitmap barcode, float scaleFactor, // 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_points)); // if (points.length == 2) // { // paint.setStrokeWidth(4.0f); // drawLine(canvas, paint, points[0], points[1], scaleFactor); // } // else if (points.length == 4 // && (rawResult.getBarcodeFormat() == BarcodeFormat.UPC_A || rawResult // .getBarcodeFormat() == BarcodeFormat.EAN_13)) // { // // Hacky special case -- draw two lines, for the barcode and // // metadata // drawLine(canvas, paint, points[0], points[1], scaleFactor); // drawLine(canvas, paint, points[2], points[3], scaleFactor); // } // else // { // paint.setStrokeWidth(10.0f); // for (ResultPoint point : points) // { // if (point != null) // { // canvas.drawPoint(scaleFactor * point.getX(), // scaleFactor * point.getY(), paint); // } // } // } // } // } private static void drawLine(Canvas canvas, Paint paint, ResultPoint a, ResultPoint b, float scaleFactor) { if (a != null && b != null) { canvas.drawLine(scaleFactor * a.getX(), scaleFactor * a.getY(), scaleFactor * b.getX(), scaleFactor * 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); // Log.i(TAG, "RESULT=========>"+rawResult.getText().toString()); // Log.i(TAG, "HANDLER========>"+resultHandler.getType().toString()); // ImageView barcodeImageView = (ImageView) // findViewById(R.id.barcode_image_view); // if (barcode == null) { // barcodeImageView.setImageBitmap(BitmapFactory.decodeResource(getResources(), // R.drawable.ic_launcher)); // } 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); // TextView timeTextView = (TextView) findViewById(R.id.time_text_view); // timeTextView.setText(formatter.format(new // Date(rawResult.getTimestamp()))); // // // 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 metadata = rawResult.getResultMetadata(); // if (metadata != null) { // StringBuilder metadataText = new StringBuilder(20); // for (Map.Entry 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(), // // historyManager, // // 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()) { // ClipboardInterface.setText(displayContents, this); // } // } // // Briefly show the contents of the barcode, then handle the result // outside Barcode Scanner. // private void handleDecodeExternally(Result rawResult, ResultHandler // resultHandler, Bitmap barcode) { // // if (barcode != null) { // viewfinderView.drawResultBitmap(barcode); // } // // long resultDurationMS; // if (getIntent() == null) { // resultDurationMS = DEFAULT_INTENT_RESULT_DURATION_MS; // } else { // resultDurationMS = // getIntent().getLongExtra(Intents.Scan.RESULT_DISPLAY_DURATION_MS, // DEFAULT_INTENT_RESULT_DURATION_MS); // } // // if (resultDurationMS > 0) { // String rawResultString = String.valueOf(rawResult); // if (rawResultString.length() > 32) { // rawResultString = rawResultString.substring(0, 32) + " ..."; // } // statusView.setText(getString(resultHandler.getDisplayTitle()) + " : " + // rawResultString); // } // // if (copyToClipboard && !resultHandler.areContentsSecure()) { // CharSequence text = resultHandler.getDisplayContents(); // ClipboardInterface.setText(text, this); // } // // if (source == IntentSource.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); // } // Map metadata = rawResult.getResultMetadata(); // if (metadata != null) { // if (metadata.containsKey(ResultMetadataType.UPC_EAN_EXTENSION)) { // intent.putExtra(Intents.Scan.RESULT_UPC_EAN_EXTENSION, // metadata.get(ResultMetadataType.UPC_EAN_EXTENSION).toString()); // } // Number orientation = (Number) // metadata.get(ResultMetadataType.ORIENTATION); // if (orientation != null) { // intent.putExtra(Intents.Scan.RESULT_ORIENTATION, orientation.intValue()); // } // String ecLevel = (String) // metadata.get(ResultMetadataType.ERROR_CORRECTION_LEVEL); // if (ecLevel != null) { // intent.putExtra(Intents.Scan.RESULT_ERROR_CORRECTION_LEVEL, ecLevel); // } // @SuppressWarnings("unchecked") // Iterable byteSegments = (Iterable) // metadata.get(ResultMetadataType.BYTE_SEGMENTS); // if (byteSegments != null) { // int i = 0; // for (byte[] byteSegment : byteSegments) { // intent.putExtra(Intents.Scan.RESULT_BYTE_SEGMENTS_PREFIX + i, // byteSegment); // i++; // } // } // } // sendReplyMessage(R.id.return_scan_result, intent, resultDurationMS); // // } else if (source == IntentSource.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. // int end = sourceUrl.lastIndexOf("/scan"); // String replyURL = sourceUrl.substring(0, end) + "?q=" + // resultHandler.getDisplayContents() + "&source=zxing"; // sendReplyMessage(R.id.launch_product_query, replyURL, resultDurationMS); // // } else if (source == IntentSource.ZXING_LINK) { // // if (scanFromWebPageManager != null && // scanFromWebPageManager.isScanFromWebPage()) { // String replyURL = scanFromWebPageManager.buildReplyURL(rawResult, // resultHandler); // sendReplyMessage(R.id.launch_product_query, replyURL, resultDurationMS); // } // // } // } // private void sendReplyMessage(int id, Object arg, long delayMS) { // if (handler != null) { // Message message = Message.obtain(handler, id, arg); // if (delayMS > 0L) { // handler.sendMessageDelayed(message, delayMS); // } else { // handler.sendMessage(message); // } // } // } private void initCamera(SurfaceHolder surfaceHolder) { if (surfaceHolder == null) { throw new IllegalStateException("No SurfaceHolder provided"); } if (cameraManager.isOpen()) { Log.w(TAG, "initCamera() while already open -- late SurfaceView callback?"); return; } try { cameraManager.openDriver(surfaceHolder); // Creating the handler starts the preview, which can also throw a // RuntimeException. if (handler == null) { handler = new CaptureActivityHandler(this, decodeFormats, decodeHints, characterSet, cameraManager); } decodeOrStoreSavedBitmap(null, null); } 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 initializing 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(); } public void restartPreviewAfterDelay(long delayMS) { if (handler != null) { handler.sendEmptyMessageDelayed(R.id.decode_failed, delayMS); } resetStatusView(); } 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(); } }