+++ /dev/null
-/**
- * Copyright 2009 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.integration.android;
-
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import android.app.Activity;
-import android.app.AlertDialog;
-import android.content.ActivityNotFoundException;
-import android.content.DialogInterface;
-import android.content.Intent;
-import android.content.pm.PackageManager;
-import android.content.pm.ResolveInfo;
-import android.net.Uri;
-import android.os.Bundle;
-import android.util.Log;
-
-/**
- * <p>A utility class which helps ease integration with Barcode Scanner via {@link Intent}s. This is a simple
- * way to invoke barcode scanning and receive the result, without any need to integrate, modify, or learn the
- * project's source code.</p>
- *
- * <h2>Initiating a barcode scan</h2>
- *
- * <p>To integrate, create an instance of {@code IntentIntegrator} and call {@link #initiateScan()} and wait
- * for the result in your app.</p>
- *
- * <p>It does require that the Barcode Scanner (or work-alike) application is installed. The
- * {@link #initiateScan()} method will prompt the user to download the application, if needed.</p>
- *
- * <p>There are a few steps to using this integration. First, your {@link Activity} must implement
- * the method {@link Activity#onActivityResult(int, int, Intent)} and include a line of code like this:</p>
- *
- * <pre>{@code
- * public void onActivityResult(int requestCode, int resultCode, Intent intent) {
- * IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
- * if (scanResult != null) {
- * // handle scan result
- * }
- * // else continue with any other code you need in the method
- * ...
- * }
- * }</pre>
- *
- * <p>This is where you will handle a scan result.</p>
- *
- * <p>Second, just call this in response to a user action somewhere to begin the scan process:</p>
- *
- * <pre>{@code
- * IntentIntegrator integrator = new IntentIntegrator(yourActivity);
- * integrator.initiateScan();
- * }</pre>
- *
- * <p>Note that {@link #initiateScan()} returns an {@link AlertDialog} which is non-null if the
- * user was prompted to download the application. This lets the calling app potentially manage the dialog.
- * In particular, ideally, the app dismisses the dialog if it's still active in its {@link Activity#onPause()}
- * method.</p>
- *
- * <p>You can use {@link #setTitle(String)} to customize the title of this download prompt dialog (or, use
- * {@link #setTitleByID(int)} to set the title by string resource ID.) Likewise, the prompt message, and
- * yes/no button labels can be changed.</p>
- *
- * <p>Finally, you can use {@link #addExtra(String, Object)} to add more parameters to the Intent used
- * to invoke the scanner. This can be used to set additional options not directly exposed by this
- * simplified API.</p>
- *
- * <p>By default, this will only allow applications that are known to respond to this intent correctly
- * do so. The apps that are allowed to response can be set with {@link #setTargetApplications(List)}.
- * For example, set to {@link #TARGET_BARCODE_SCANNER_ONLY} to only target the Barcode Scanner app itself.</p>
- *
- * <h2>Sharing text via barcode</h2>
- *
- * <p>To share text, encoded as a QR Code on-screen, similarly, see {@link #shareText(CharSequence)}.</p>
- *
- * <p>Some code, particularly download integration, was contributed from the Anobiit application.</p>
- *
- * <h2>Enabling experimental barcode formats</h2>
- *
- * <p>Some formats are not enabled by default even when scanning with {@link #ALL_CODE_TYPES}, such as
- * PDF417. Use {@link #initiateScan(java.util.Collection)} with
- * a collection containing the names of formats to scan for explicitly, like "PDF_417", to use such
- * formats.</p>
- *
- * @author Sean Owen
- * @author Fred Lin
- * @author Isaac Potoczny-Jones
- * @author Brad Drehmer
- * @author gcstang
- */
-public class IntentIntegrator {
-
- public static final int REQUEST_CODE = 0x0000c0de; // Only use bottom 16 bits
- private static final String TAG = IntentIntegrator.class.getSimpleName();
-
- public static final String DEFAULT_TITLE = "Install Barcode Scanner?";
- public static final String DEFAULT_MESSAGE =
- "This application requires Barcode Scanner. Would you like to install it?";
- public static final String DEFAULT_YES = "Yes";
- public static final String DEFAULT_NO = "No";
-
- private static final String BS_PACKAGE = "com.google.zxing.client.android";
- private static final String BSPLUS_PACKAGE = "com.srowen.bs.android";
-
- // supported barcode formats
- public static final Collection<String> PRODUCT_CODE_TYPES = list("UPC_A", "UPC_E", "EAN_8", "EAN_13", "RSS_14");
- public static final Collection<String> ONE_D_CODE_TYPES =
- list("UPC_A", "UPC_E", "EAN_8", "EAN_13", "CODE_39", "CODE_93", "CODE_128",
- "ITF", "RSS_14", "RSS_EXPANDED");
- public static final Collection<String> QR_CODE_TYPES = Collections.singleton("QR_CODE");
- public static final Collection<String> DATA_MATRIX_TYPES = Collections.singleton("DATA_MATRIX");
-
- public static final Collection<String> ALL_CODE_TYPES = null;
-
- public static final List<String> TARGET_BARCODE_SCANNER_ONLY = Collections.singletonList(BS_PACKAGE);
- public static final List<String> TARGET_ALL_KNOWN = list(
- BSPLUS_PACKAGE, // Barcode Scanner+
- BSPLUS_PACKAGE + ".simple", // Barcode Scanner+ Simple
- BS_PACKAGE // Barcode Scanner
- // What else supports this intent?
- );
-
- private final Activity activity;
- private String title;
- private String message;
- private String buttonYes;
- private String buttonNo;
- private List<String> targetApplications;
- private final Map<String,Object> moreExtras;
-
- public IntentIntegrator(Activity activity) {
- this.activity = activity;
- title = DEFAULT_TITLE;
- message = DEFAULT_MESSAGE;
- buttonYes = DEFAULT_YES;
- buttonNo = DEFAULT_NO;
- targetApplications = TARGET_ALL_KNOWN;
- moreExtras = new HashMap<String,Object>(3);
- }
-
- public String getTitle() {
- return title;
- }
-
- public void setTitle(String title) {
- this.title = title;
- }
-
- public void setTitleByID(int titleID) {
- title = activity.getString(titleID);
- }
-
- public String getMessage() {
- return message;
- }
-
- public void setMessage(String message) {
- this.message = message;
- }
-
- public void setMessageByID(int messageID) {
- message = activity.getString(messageID);
- }
-
- public String getButtonYes() {
- return buttonYes;
- }
-
- public void setButtonYes(String buttonYes) {
- this.buttonYes = buttonYes;
- }
-
- public void setButtonYesByID(int buttonYesID) {
- buttonYes = activity.getString(buttonYesID);
- }
-
- public String getButtonNo() {
- return buttonNo;
- }
-
- public void setButtonNo(String buttonNo) {
- this.buttonNo = buttonNo;
- }
-
- public void setButtonNoByID(int buttonNoID) {
- buttonNo = activity.getString(buttonNoID);
- }
-
- public Collection<String> getTargetApplications() {
- return targetApplications;
- }
-
- public final void setTargetApplications(List<String> targetApplications) {
- if (targetApplications.isEmpty()) {
- throw new IllegalArgumentException("No target applications");
- }
- this.targetApplications = targetApplications;
- }
-
- public void setSingleTargetApplication(String targetApplication) {
- this.targetApplications = Collections.singletonList(targetApplication);
- }
-
- public Map<String,?> getMoreExtras() {
- return moreExtras;
- }
-
- public final void addExtra(String key, Object value) {
- moreExtras.put(key, value);
- }
-
- /**
- * Initiates a scan for all known barcode types.
- */
- public final AlertDialog initiateScan() {
- return initiateScan(ALL_CODE_TYPES);
- }
-
- /**
- * Initiates a scan only for a certain set of barcode types, given as strings corresponding
- * to their names in ZXing's {@code BarcodeFormat} class like "UPC_A". You can supply constants
- * like {@link #PRODUCT_CODE_TYPES} for example.
- *
- * @return the {@link AlertDialog} that was shown to the user prompting them to download the app
- * if a prompt was needed, or null otherwise
- */
- public final AlertDialog initiateScan(Collection<String> desiredBarcodeFormats) {
- Intent intentScan = new Intent(BS_PACKAGE + ".SCAN");
- intentScan.addCategory(Intent.CATEGORY_DEFAULT);
-
- // check which types of codes to scan for
- if (desiredBarcodeFormats != null) {
- // set the desired barcode types
- StringBuilder joinedByComma = new StringBuilder();
- for (String format : desiredBarcodeFormats) {
- if (joinedByComma.length() > 0) {
- joinedByComma.append(',');
- }
- joinedByComma.append(format);
- }
- intentScan.putExtra("SCAN_FORMATS", joinedByComma.toString());
- }
-
- String targetAppPackage = findTargetAppPackage(intentScan);
- if (targetAppPackage == null) {
- return showDownloadDialog();
- }
- intentScan.setPackage(targetAppPackage);
- intentScan.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
- intentScan.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
- attachMoreExtras(intentScan);
- startActivityForResult(intentScan, REQUEST_CODE);
- return null;
- }
-
- /**
- * Start an activity. This method is defined to allow different methods of activity starting for
- * newer versions of Android and for compatibility library.
- *
- * @param intent Intent to start.
- * @param code Request code for the activity
- * @see android.app.Activity#startActivityForResult(Intent, int)
- * @see android.app.Fragment#startActivityForResult(Intent, int)
- */
- protected void startActivityForResult(Intent intent, int code) {
- activity.startActivityForResult(intent, code);
- }
-
- private String findTargetAppPackage(Intent intent) {
- PackageManager pm = activity.getPackageManager();
- List<ResolveInfo> availableApps = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
- if (availableApps != null) {
- for (String targetApp : targetApplications) {
- if (contains(availableApps, targetApp)) {
- return targetApp;
- }
- }
- }
- return null;
- }
-
- private static boolean contains(Iterable<ResolveInfo> availableApps, String targetApp) {
- for (ResolveInfo availableApp : availableApps) {
- String packageName = availableApp.activityInfo.packageName;
- if (targetApp.equals(packageName)) {
- return true;
- }
- }
- return false;
- }
-
- private AlertDialog showDownloadDialog() {
- AlertDialog.Builder downloadDialog = new AlertDialog.Builder(activity);
- downloadDialog.setTitle(title);
- downloadDialog.setMessage(message);
- downloadDialog.setPositiveButton(buttonYes, new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialogInterface, int i) {
- String packageName = targetApplications.get(0);
- Uri uri = Uri.parse("market://details?id=" + packageName);
- Intent intent = new Intent(Intent.ACTION_VIEW, uri);
- try {
- activity.startActivity(intent);
- } catch (ActivityNotFoundException anfe) {
- // Hmm, market is not installed
- Log.w(TAG, "Google Play is not installed; cannot install " + packageName);
- }
- }
- });
- downloadDialog.setNegativeButton(buttonNo, new DialogInterface.OnClickListener() {
- @Override
- public void onClick(DialogInterface dialogInterface, int i) {}
- });
- return downloadDialog.show();
- }
-
-
- /**
- * <p>Call this from your {@link Activity}'s
- * {@link Activity#onActivityResult(int, int, Intent)} method.</p>
- *
- * @return null if the event handled here was not related to this class, or
- * else an {@link IntentResult} containing the result of the scan. If the user cancelled scanning,
- * the fields will be null.
- */
- public static IntentResult parseActivityResult(int requestCode, int resultCode, Intent intent) {
- if (requestCode == REQUEST_CODE) {
- if (resultCode == Activity.RESULT_OK) {
- String contents = intent.getStringExtra("SCAN_RESULT");
- String formatName = intent.getStringExtra("SCAN_RESULT_FORMAT");
- byte[] rawBytes = intent.getByteArrayExtra("SCAN_RESULT_BYTES");
- int intentOrientation = intent.getIntExtra("SCAN_RESULT_ORIENTATION", Integer.MIN_VALUE);
- Integer orientation = intentOrientation == Integer.MIN_VALUE ? null : intentOrientation;
- String errorCorrectionLevel = intent.getStringExtra("SCAN_RESULT_ERROR_CORRECTION_LEVEL");
- return new IntentResult(contents,formatName);
- }
- return new IntentResult("","");
- }
- return null;
- }
-
-
- /**
- * Defaults to type "TEXT_TYPE".
- * @see #shareText(CharSequence, CharSequence)
- */
- public final AlertDialog shareText(CharSequence text) {
- return shareText(text, "TEXT_TYPE");
- }
-
- /**
- * Shares the given text by encoding it as a barcode, such that another user can
- * scan the text off the screen of the device.
- *
- * @param text the text string to encode as a barcode
- * @param type type of data to encode. See {@code com.google.zxing.client.android.Contents.Type} constants.
- * @return the {@link AlertDialog} that was shown to the user prompting them to download the app
- * if a prompt was needed, or null otherwise
- */
- public final AlertDialog shareText(CharSequence text, CharSequence type) {
- Intent intent = new Intent();
- intent.addCategory(Intent.CATEGORY_DEFAULT);
- intent.setAction(BS_PACKAGE + ".ENCODE");
- intent.putExtra("ENCODE_TYPE", type);
- intent.putExtra("ENCODE_DATA", text);
- String targetAppPackage = findTargetAppPackage(intent);
- if (targetAppPackage == null) {
- return showDownloadDialog();
- }
- intent.setPackage(targetAppPackage);
- intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
- intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
- attachMoreExtras(intent);
- activity.startActivity(intent);
- return null;
- }
-
- private static List<String> list(String... values) {
- return Collections.unmodifiableList(Arrays.asList(values));
- }
-
- private void attachMoreExtras(Intent intent) {
- for (Map.Entry<String,Object> entry : moreExtras.entrySet()) {
- String key = entry.getKey();
- Object value = entry.getValue();
- // Kind of hacky
- if (value instanceof Integer) {
- intent.putExtra(key, (Integer) value);
- } else if (value instanceof Long) {
- intent.putExtra(key, (Long) value);
- } else if (value instanceof Boolean) {
- intent.putExtra(key, (Boolean) value);
- } else if (value instanceof Double) {
- intent.putExtra(key, (Double) value);
- } else if (value instanceof Float) {
- intent.putExtra(key, (Float) value);
- } else if (value instanceof Bundle) {
- intent.putExtra(key, (Bundle) value);
- } else {
- intent.putExtra(key, value.toString());
- }
- }
- }
-
-}
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projects / old-jaiswallab-svn / .git / commitdiff