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  • 2012-06-14 11:00
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二维码Demo,实现条码扫描,二维码识别等功能
QR.rar
内容介绍
/* * 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.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.content.res.AssetFileDescriptor; import android.content.res.Configuration; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.Rect; import android.media.AudioManager; import android.media.MediaPlayer; import android.media.MediaPlayer.OnCompletionListener; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.os.Vibrator; 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; /** * 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 float BEEP_VOLUME = 0.10f; private static final long VIBRATE_DURATION = 200L; 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 MediaPlayer mediaPlayer; private Result lastResult; private boolean hasSurface; private boolean playBeep; private boolean vibrate; 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; /** * When the beep has finished playing, rewind to queue up another one. */ private final OnCompletionListener beepListener = new OnCompletionListener() { public void onCompletion(MediaPlayer mediaPlayer) { mediaPlayer.seekTo(0); } }; 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); 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); } 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 = DecodeFormatManag
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