如何使用zXing在Android中爲IntentIntegrator創建

Question

我想在Android中爲IntentIntegrator創建一個對象。

IntentIntegrator integrator = new IntentIntegrator(ZBarReaderActivity.this); 

這裏ZBarReaderActivity是我Activity類。

在此先感謝，

請幫幫我。

IntentIntegrator是com.google.zxing.integration.android.IntentIntegrator包中的類。

它用於識別Qr代碼內容是電話號碼，WebSite，WebUrl。

Answer 1

IntentIntegrator integrator = new IntentIntegrator(this); /* "this" is enough */ 

瞭解更多信息，請觀看此：http://www.youtube.com/watch?v=mVkaua4Lcvo 它在德國的解釋，但你可以看到代碼，以及如何創建一個IntentIntegrator對象。

頁：你必須更詳細地解釋它，否則你不能得到你的問題的答案。

Answer 2

這是我用過

IntentIntegrator.java

/* 
* 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.your.package.name; 

import com.your.package.name.IntentIntegrator; 
import com.your.package.name.IntentResult; 

import android.app.AlertDialog; 
import android.app.Activity; 
import android.content.ActivityNotFoundException; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.net.Uri; 

/** 
* <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>Integration is essentially as easy as calling {@link #initiateScan(Activity)} and waiting 
* for the result in your app.</p> 
* 
* <p>It does require that the Barcode Scanner application is installed. The 
* {@link #initiateScan(Activity)} 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> 
* 
* <p>{@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 
* ... 
* } 
* }</p> 
* 
* <p>This is where you will handle a scan result. 
* Second, just call this in response to a user action somewhere to begin the scan process:</p> 
* 
* <p>{@code IntentIntegrator.initiateScan(yourActivity);}</p> 
* 
* <p>You can use {@link #initiateScan(Activity, CharSequence, CharSequence, CharSequence, CharSequence)} or 
* {@link #initiateScan(Activity, int, int, int, int)} to customize the download prompt with 
* different text labels.</p> 
* 
* <p>Note that {@link #initiateScan(Activity)} 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> 
* 
* <h2>Sharing text via barcode</h2> 
* 
* <p>To share text, encoded as a QR Code on-screen, similarly, see {@link #shareText(Activity, CharSequence)}.</p> 
* 
* <p>Some code, particularly download integration, was contributed from the Anobiit application.</p> 
* 
* @author Sean Owen 
* @author Fred Lin 
* @author Isaac Potoczny-Jones 
* @author Brad Drehmer 
*/ 
public final class IntentIntegrator { 

    public static final int REQUEST_CODE = 0x0ba7c0de; // get it? 

    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"; 

    // supported barcode formats 
    public static final String PRODUCT_CODE_TYPES = "UPC_A,UPC_E,EAN_8,EAN_13"; 
    public static final String ONE_D_CODE_TYPES = PRODUCT_CODE_TYPES + ",CODE_39,CODE_93,CODE_128"; 
    public static final String QR_CODE_TYPES = "QR_CODE"; 
    public static final String ALL_CODE_TYPES = null; 

    private IntentIntegrator() { 
    } 

    /** 
    * See {@link #initiateScan(Activity, CharSequence, CharSequence, CharSequence, CharSequence)} -- 
    * same, but uses default English labels. 
    */ 
    public static AlertDialog initiateScan(Activity activity) { 
    return initiateScan(activity, DEFAULT_TITLE, DEFAULT_MESSAGE, DEFAULT_YES, DEFAULT_NO); 
    } 

    /** 
    * See {@link #initiateScan(Activity, CharSequence, CharSequence, CharSequence, CharSequence)} -- 
    * same, but takes string IDs which refer 
    * to the {@link Activity}'s resource bundle entries. 
    */ 
    public static AlertDialog initiateScan(Activity activity, 
             int stringTitle, 
             int stringMessage, 
             int stringButtonYes, 
             int stringButtonNo) { 
    return initiateScan(activity, 
         activity.getString(stringTitle), 
         activity.getString(stringMessage), 
         activity.getString(stringButtonYes), 
         activity.getString(stringButtonNo)); 
    } 

    /** 
    * See {@link #initiateScan(Activity, CharSequence, CharSequence, CharSequence, CharSequence, CharSequence)} -- 
    * same, but scans for all supported barcode types. 
    * @param stringTitle title of dialog prompting user to download Barcode Scanner 
    * @param stringMessage text of dialog prompting user to download Barcode Scanner 
    * @param stringButtonYes text of button user clicks when agreeing to download 
    * Barcode Scanner (e.g. "Yes") 
    * @param stringButtonNo text of button user clicks when declining to download 
    * Barcode Scanner (e.g. "No") 
    * @return an {@link AlertDialog} if the user was prompted to download the app, 
    * null otherwise 
    */ 
    public static AlertDialog initiateScan(Activity activity, 
             CharSequence stringTitle, 
             CharSequence stringMessage, 
             CharSequence stringButtonYes, 
             CharSequence stringButtonNo) { 

    return initiateScan(activity, 
         stringTitle, 
         stringMessage, 
         stringButtonYes, 
         stringButtonNo, 
         ALL_CODE_TYPES); 
    } 

    /** 
    * Invokes scanning. 
    * 
    * @param stringTitle title of dialog prompting user to download Barcode Scanner 
    * @param stringMessage text of dialog prompting user to download Barcode Scanner 
    * @param stringButtonYes text of button user clicks when agreeing to download 
    * Barcode Scanner (e.g. "Yes") 
    * @param stringButtonNo text of button user clicks when declining to download 
    * Barcode Scanner (e.g. "No") 
    * @param stringDesiredBarcodeFormats a comma separated list of codes you would 
    * like to scan for. 
    * @return an {@link AlertDialog} if the user was prompted to download the app, 
    * null otherwise 
    * @throws InterruptedException if timeout expires before a scan completes 
    */ 
    public static AlertDialog initiateScan(Activity activity, 
             CharSequence stringTitle, 
             CharSequence stringMessage, 
             CharSequence stringButtonYes, 
             CharSequence stringButtonNo, 
             CharSequence stringDesiredBarcodeFormats) { 
    Intent intentScan = new Intent("com.google.zxing.client.android.SCAN"); 
    intentScan.addCategory(Intent.CATEGORY_DEFAULT); 

    // check which types of codes to scan for 
    if (stringDesiredBarcodeFormats != null) { 
     // set the desired barcode types 
     intentScan.putExtra("SCAN_FORMATS", stringDesiredBarcodeFormats); 
    } 

    try { 
     activity.startActivityForResult(intentScan, REQUEST_CODE); 
     return null; 
    } catch (ActivityNotFoundException e) { 
     return showDownloadDialog(activity, stringTitle, stringMessage, stringButtonYes, stringButtonNo); 
    } 
    } 

    private static AlertDialog showDownloadDialog(final Activity activity, 
               CharSequence stringTitle, 
               CharSequence stringMessage, 
               CharSequence stringButtonYes, 
               CharSequence stringButtonNo) { 
    AlertDialog.Builder downloadDialog = new AlertDialog.Builder(activity); 
    downloadDialog.setTitle(stringTitle); 
    downloadDialog.setMessage(stringMessage); 
    downloadDialog.setPositiveButton(stringButtonYes, new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialogInterface, int i) { 
     Uri uri = Uri.parse("market://search?q=pname:com.google.zxing.client.android"); 
     Intent intent = new Intent(Intent.ACTION_VIEW, uri); 
     activity.startActivity(intent); 
     } 
    }); 
    downloadDialog.setNegativeButton(stringButtonNo, new DialogInterface.OnClickListener() { 
     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 {@link IntentIntegrator}, 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"); 
     return new IntentResult(contents, formatName); 
     } else { 
     return new IntentResult(null, null); 
     } 
    } 
    return null; 
    } 

    /** 
    * See {@link #shareText(Activity, CharSequence, CharSequence, CharSequence, CharSequence, CharSequence)} -- 
    * same, but uses default English labels. 
    */ 
    public static void shareText(Activity activity, CharSequence text) { 
    shareText(activity, text, DEFAULT_TITLE, DEFAULT_MESSAGE, DEFAULT_YES, DEFAULT_NO); 
    } 

    /** 
    * See {@link #shareText(Activity, CharSequence, CharSequence, CharSequence, CharSequence, CharSequence)} -- 
    * same, but takes string IDs which refer to the {@link Activity}'s resource bundle entries. 
    */ 
    public static void shareText(Activity activity, 
           CharSequence text, 
           int stringTitle, 
           int stringMessage, 
           int stringButtonYes, 
           int stringButtonNo) { 
    shareText(activity, 
       text, 
       activity.getString(stringTitle), 
       activity.getString(stringMessage), 
       activity.getString(stringButtonYes), 
       activity.getString(stringButtonNo)); 
    } 

    /** 
    * 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 stringTitle title of dialog prompting user to download Barcode Scanner 
    * @param stringMessage text of dialog prompting user to download Barcode Scanner 
    * @param stringButtonYes text of button user clicks when agreeing to download 
    * Barcode Scanner (e.g. "Yes") 
    * @param stringButtonNo text of button user clicks when declining to download 
    * Barcode Scanner (e.g. "No") 
    */ 
    public static void shareText(Activity activity, 
           CharSequence text, 
           CharSequence stringTitle, 
           CharSequence stringMessage, 
           CharSequence stringButtonYes, 
           CharSequence stringButtonNo) { 

    Intent intent = new Intent(); 
    intent.setAction("com.google.zxing.client.android.ENCODE"); 
    intent.putExtra("ENCODE_TYPE", "TEXT_TYPE"); 
    intent.putExtra("ENCODE_DATA", text); 
    try { 
     activity.startActivity(intent); 
    } catch (ActivityNotFoundException e) { 
     showDownloadDialog(activity, stringTitle, stringMessage, stringButtonYes, stringButtonNo); 
    } 
    } 

} 

IntentResult.java

/* 
* 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.your.package.name; 

import com.your.package.name.IntentIntegrator; 

/** 
* <p>Encapsulates the result of a barcode scan invoked through {@link IntentIntegrator}.</p> 
* 
* @author Sean Owen 
*/ 
public final class IntentResult { 

    private final String contents; 
    private final String formatName; 

    IntentResult(String contents, String formatName) { 
    this.contents = contents; 
    this.formatName = formatName; 
    } 

    /** 
    * @return raw content of barcode 
    */ 
    public String getContents() { 
    return contents; 
    } 

    /** 
    * @return name of format, like "QR_CODE", "UPC_A". See <code>BarcodeFormat</code> for more format names. 
    */ 
    public String getFormatName() { 
    return formatName; 
    }  
} 

然後用它

的intentintegrator