Android Open Source - zxingfragmentlib Load Packages Async Task






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Back to project page zxingfragmentlib.

License

The source code is released under:

Apache License

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Java Source Code

/*
 * Copyright (C) 2009 ZXing authors/* ww w.ja  va  2 s  .c om*/
 *
 * 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.share;

import android.app.ListActivity;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageItemInfo;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListAdapter;
import com.google.zxing.client.android.R;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Loads a list of packages installed on the device asynchronously.
 *
 * @author Sean Owen
 */
final class LoadPackagesAsyncTask extends AsyncTask<Object,Object,List<AppInfo>> {

  private static final String[] PKG_PREFIX_WHITELIST = {
      "com.google.android.apps.",
  };
  private static final String[] PKG_PREFIX_BLACKLIST = {
      "com.android.",
      "android",
      "com.google.android.",
      "com.htc",
  };

  private final ListActivity activity;

  LoadPackagesAsyncTask(ListActivity activity) {
    this.activity = activity;
  }

  @Override
  protected List<AppInfo> doInBackground(Object... objects) {
    List<AppInfo> labelsPackages = new ArrayList<>();
    PackageManager packageManager = activity.getPackageManager();
    Iterable<ApplicationInfo> appInfos = packageManager.getInstalledApplications(0);
    for (PackageItemInfo appInfo : appInfos) {
      String packageName = appInfo.packageName;
      if (!isHidden(packageName)) {
        CharSequence label = appInfo.loadLabel(packageManager);
        Drawable icon = appInfo.loadIcon(packageManager);        
        if (label != null) {
          labelsPackages.add(new AppInfo(packageName, label.toString(), icon));
        }
      }
    }
    Collections.sort(labelsPackages);
    return labelsPackages;
  }

  private static boolean isHidden(String packageName) {
    if (packageName == null) {
      return true;
    }
    for (String prefix : PKG_PREFIX_WHITELIST) {
      if (packageName.startsWith(prefix)) {
        return false;
      }
    }
    for (String prefix : PKG_PREFIX_BLACKLIST) {
      if (packageName.startsWith(prefix)) {
        return true;
      }
    }
    return false;
  }

  @Override
  protected void onPostExecute(final List<AppInfo> results) {    
    ListAdapter listAdapter = new ArrayAdapter<AppInfo>(activity, 
                                                        R.layout.app_picker_list_item, 
                                                        R.id.app_picker_list_item_label, 
                                                        results) {
      @Override
      public View getView(int position, View convertView, ViewGroup parent) {
        View view = super.getView(position, convertView, parent);
        Drawable icon = results.get(position).getIcon();
        if (icon != null) {
          ((ImageView) view.findViewById(R.id.app_picker_list_item_icon)).setImageDrawable(icon);
        }
        return view;
      }
    };
    activity.setListAdapter(listAdapter);
  }

}




Java Source Code List

com.google.zxing.client.android.AmbientLightManager.java
com.google.zxing.client.android.BeepManager.java
com.google.zxing.client.android.Contents.java
com.google.zxing.client.android.DecodeFormatManager.java
com.google.zxing.client.android.DecodeHintManager.java
com.google.zxing.client.android.FinishListener.java
com.google.zxing.client.android.HelpActivity.java
com.google.zxing.client.android.HttpHelper.java
com.google.zxing.client.android.InactivityTimer.java
com.google.zxing.client.android.IntentSource.java
com.google.zxing.client.android.Intents.java
com.google.zxing.client.android.LocaleManager.java
com.google.zxing.client.android.PreferencesActivity.java
com.google.zxing.client.android.PreferencesFragment.java
com.google.zxing.client.android.ScanFromWebPageManager.java
com.google.zxing.client.android.ViewfinderResultPointCallback.java
com.google.zxing.client.android.ViewfinderView.java
com.google.zxing.client.android.book.BrowseBookListener.java
com.google.zxing.client.android.book.SearchBookContentsActivity.java
com.google.zxing.client.android.book.SearchBookContentsAdapter.java
com.google.zxing.client.android.book.SearchBookContentsListItem.java
com.google.zxing.client.android.book.SearchBookContentsResult.java
com.google.zxing.client.android.camera.AutoFocusManager.java
com.google.zxing.client.android.camera.CameraConfigurationManager.java
com.google.zxing.client.android.camera.CameraConfigurationUtils.java
com.google.zxing.client.android.camera.CameraManager.java
com.google.zxing.client.android.camera.FrontLightMode.java
com.google.zxing.client.android.camera.PreviewCallback.java
com.google.zxing.client.android.camera.open.OpenCameraInterface.java
com.google.zxing.client.android.clipboard.ClipboardInterface.java
com.google.zxing.client.android.encode.ContactEncoder.java
com.google.zxing.client.android.encode.EncodeActivity.java
com.google.zxing.client.android.encode.Formatter.java
com.google.zxing.client.android.encode.MECARDContactEncoder.java
com.google.zxing.client.android.encode.QRCodeEncoder.java
com.google.zxing.client.android.encode.VCardContactEncoder.java
com.google.zxing.client.android.encode.VCardFieldFormatter.java
com.google.zxing.client.android.encode.VCardTelDisplayFormatter.java
com.google.zxing.client.android.history.DBHelper.java
com.google.zxing.client.android.history.HistoryActivity.java
com.google.zxing.client.android.history.HistoryItemAdapter.java
com.google.zxing.client.android.history.HistoryItem.java
com.google.zxing.client.android.history.HistoryManager.java
com.google.zxing.client.android.result.AddressBookResultHandler.java
com.google.zxing.client.android.result.CalendarResultHandler.java
com.google.zxing.client.android.result.EmailAddressResultHandler.java
com.google.zxing.client.android.result.GeoResultHandler.java
com.google.zxing.client.android.result.ISBNResultHandler.java
com.google.zxing.client.android.result.ProductResultHandler.java
com.google.zxing.client.android.result.ResultButtonListener.java
com.google.zxing.client.android.result.ResultHandlerFactory.java
com.google.zxing.client.android.result.ResultHandler.java
com.google.zxing.client.android.result.SMSResultHandler.java
com.google.zxing.client.android.result.TelResultHandler.java
com.google.zxing.client.android.result.TextResultHandler.java
com.google.zxing.client.android.result.URIResultHandler.java
com.google.zxing.client.android.result.WifiResultHandler.java
com.google.zxing.client.android.result.supplement.BookResultInfoRetriever.java
com.google.zxing.client.android.result.supplement.ProductResultInfoRetriever.java
com.google.zxing.client.android.result.supplement.SupplementalInfoRetriever.java
com.google.zxing.client.android.result.supplement.TitleRetriever.java
com.google.zxing.client.android.result.supplement.URIResultInfoRetriever.java
com.google.zxing.client.android.share.AppInfo.java
com.google.zxing.client.android.share.AppPickerActivity.java
com.google.zxing.client.android.share.BookmarkAdapter.java
com.google.zxing.client.android.share.BookmarkPickerActivity.java
com.google.zxing.client.android.share.LoadPackagesAsyncTask.java
com.google.zxing.client.android.share.ShareActivity.java
com.google.zxing.client.android.wifi.NetworkType.java
com.google.zxing.client.android.wifi.WifiConfigManager.java
com.welcu.android.zxingfragmentlib.ApplicationTest.java
com.welcu.android.zxingfragmentlib.BarCodeScannerFragment.java
com.welcu.android.zxingfragmentlib.BarCodeScannerHandler.java
com.welcu.android.zxingfragmentlib.DecodeHandler.java
com.welcu.android.zxingfragmentlib.DecodeThread.java
com.welcu.android.zxingfragmentlib.IConstants.java
com.welcu.android.zxingfragmentlib.IZXingConstants.java
com.welcu.android.zxingfragmentlibsample.BarCodeContainerFragment.java
com.welcu.android.zxingfragmentlibsample.LauncherActivity.java
com.welcu.android.zxingfragmentlibsample.SampleActivity.java
com.welcu.android.zxingfragmentlibsample.SampleFragment.java
com.welcu.android.zxingfragmentlibsample.SampleNestedFragmentActivity.java
com.welcu.android.zxingfragmentlibsample.SampleStretchedActivity.java
com.welcu.android.zxingfragmentlibsample.SampleStretchedFragment.java
com.welcu.android.zxingfragmentsample.sample.ApplicationTest.java