| /* |
| * 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.encode; |
| |
| import android.view.Display; |
| import android.view.WindowManager; |
| import com.google.zxing.WriterException; |
| import com.google.zxing.client.android.FinishListener; |
| import com.google.zxing.client.android.Intents; |
| import com.google.zxing.client.android.R; |
| |
| import android.app.Activity; |
| import android.app.AlertDialog; |
| import android.content.Intent; |
| import android.graphics.Bitmap; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.os.Environment; |
| import android.util.Log; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.widget.ImageView; |
| import android.widget.TextView; |
| |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| |
| /** |
| * This class encodes data from an Intent into a QR code, and then displays it full screen so that |
| * another person can scan it with their device. |
| * |
| * @author dswitkin@google.com (Daniel Switkin) |
| */ |
| public final class EncodeActivity extends Activity { |
| |
| private static final String TAG = EncodeActivity.class.getSimpleName(); |
| |
| private static final int MAX_BARCODE_FILENAME_LENGTH = 24; |
| |
| private QRCodeEncoder qrCodeEncoder; |
| |
| @Override |
| public void onCreate(Bundle icicle) { |
| super.onCreate(icicle); |
| |
| Intent intent = getIntent(); |
| if (intent != null) { |
| String action = intent.getAction(); |
| if (action.equals(Intents.Encode.ACTION) || action.equals(Intent.ACTION_SEND)) { |
| setContentView(R.layout.encode); |
| return; |
| } |
| } |
| finish(); |
| } |
| |
| @Override |
| public boolean onCreateOptionsMenu(Menu menu) { |
| super.onCreateOptionsMenu(menu); |
| menu.add(0, Menu.FIRST, 0, R.string.menu_share).setIcon(android.R.drawable.ic_menu_share); |
| return true; |
| } |
| |
| @Override |
| public boolean onOptionsItemSelected(MenuItem item) { |
| QRCodeEncoder encoder = qrCodeEncoder; |
| if (encoder == null) { // Odd |
| Log.w(TAG, "No existing barcode to send?"); |
| return true; |
| } |
| |
| String contents = encoder.getContents(); |
| if (contents == null) { |
| Log.w(TAG, "No existing barcode to send?"); |
| return true; |
| } |
| |
| Bitmap bitmap; |
| try { |
| bitmap = encoder.encodeAsBitmap(); |
| } catch (WriterException we) { |
| Log.w(TAG, we); |
| return true; |
| } |
| |
| File bsRoot = new File(Environment.getExternalStorageDirectory(), "BarcodeScanner"); |
| File barcodesRoot = new File(bsRoot, "Barcodes"); |
| if (!barcodesRoot.exists() && !barcodesRoot.mkdirs()) { |
| Log.w(TAG, "Couldn't make dir " + barcodesRoot); |
| showErrorMessage(R.string.msg_unmount_usb); |
| return true; |
| } |
| File barcodeFile = new File(barcodesRoot, makeBarcodeFileName(contents) + ".png"); |
| barcodeFile.delete(); |
| FileOutputStream fos = null; |
| try { |
| fos = new FileOutputStream(barcodeFile); |
| bitmap.compress(Bitmap.CompressFormat.PNG, 0, fos); |
| } catch (FileNotFoundException fnfe) { |
| Log.w(TAG, "Couldn't access file " + barcodeFile + " due to " + fnfe); |
| showErrorMessage(R.string.msg_unmount_usb); |
| return true; |
| } finally { |
| if (fos != null) { |
| try { |
| fos.close(); |
| } catch (IOException ioe) { |
| // do nothing |
| } |
| } |
| } |
| |
| Intent intent = new Intent(Intent.ACTION_SEND, Uri.parse("mailto:")); |
| intent.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.app_name) + " - " + encoder.getTitle()); |
| intent.putExtra(Intent.EXTRA_TEXT, encoder.getContents()); |
| intent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + barcodeFile.getAbsolutePath())); |
| intent.setType("image/png"); |
| intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); |
| startActivity(Intent.createChooser(intent, null)); |
| return true; |
| } |
| |
| private static CharSequence makeBarcodeFileName(CharSequence contents) { |
| int fileNameLength = Math.min(MAX_BARCODE_FILENAME_LENGTH, contents.length()); |
| StringBuilder fileName = new StringBuilder(fileNameLength); |
| for (int i = 0; i < fileNameLength; i++) { |
| char c = contents.charAt(i); |
| if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9')) { |
| fileName.append(c); |
| } else { |
| fileName.append('_'); |
| } |
| } |
| return fileName; |
| } |
| |
| @Override |
| protected void onResume() { |
| super.onResume(); |
| // This assumes the view is full screen, which is a good assumption |
| WindowManager manager = (WindowManager) getSystemService(WINDOW_SERVICE); |
| Display display = manager.getDefaultDisplay(); |
| int width = display.getWidth(); |
| int height = display.getHeight(); |
| int smallerDimension = width < height ? width : height; |
| smallerDimension = smallerDimension * 7 / 8; |
| |
| Intent intent = getIntent(); |
| if (intent == null) { |
| return; |
| } |
| try { |
| qrCodeEncoder = new QRCodeEncoder(this, intent, smallerDimension); |
| Bitmap bitmap = qrCodeEncoder.encodeAsBitmap(); |
| ImageView view = (ImageView) findViewById(R.id.image_view); |
| view.setImageBitmap(bitmap); |
| |
| TextView contents = (TextView) findViewById(R.id.contents_text_view); |
| if (intent.getBooleanExtra(Intents.Encode.SHOW_CONTENTS, true)) { |
| contents.setText(qrCodeEncoder.getDisplayContents()); |
| setTitle(getString(R.string.app_name) + " - " + qrCodeEncoder.getTitle()); |
| } else { |
| contents.setText(""); |
| setTitle(getString(R.string.app_name)); |
| } |
| } catch (WriterException e) { |
| Log.e(TAG, "Could not encode barcode", e); |
| showErrorMessage(R.string.msg_encode_contents_failed); |
| qrCodeEncoder = null; |
| } catch (IllegalArgumentException e) { |
| Log.e(TAG, "Could not encode barcode", e); |
| showErrorMessage(R.string.msg_encode_contents_failed); |
| qrCodeEncoder = null; |
| } |
| } |
| |
| private void showErrorMessage(int message) { |
| AlertDialog.Builder builder = new AlertDialog.Builder(this); |
| builder.setMessage(message); |
| builder.setPositiveButton(R.string.button_ok, new FinishListener(this)); |
| builder.setOnCancelListener(new FinishListener(this)); |
| builder.show(); |
| } |
| } |