Android Open Source - DashNotifier App List Fragment

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Back to project page DashNotifier.
License

The source code is released under:
MIT License
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Java Source Code

package com.umang.dashnotifier;
// w ww.  j  av  a  2  s  .c  o  m
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;

import android.app.ListFragment;
import android.app.SearchManager;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.text.TextUtils;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.SearchView.OnCloseListener;
import android.widget.SearchView.OnQueryTextListener;
import android.widget.Toast;

public class AppListFragment extends ListFragment implements OnQueryTextListener, OnCloseListener{
  private PackageAdapter adapter;
  private ArrayList<PackageItem> data;
  SharedPreferences preferences;
  SharedPreferences.Editor editor;
  PackageManager pm;
  SearchView searchView;
  AtomicBoolean showSearch = new AtomicBoolean(false);
  AtomicBoolean loadComplete = new AtomicBoolean(false);
  AtomicBoolean asyncFired = new AtomicBoolean(false);
  ArrayList<String> iconNames;
  ArrayList<String> packageNames;
  ListAppTask asyncTask ;
  
  //private static final String TAG = "AppListFragment";

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    pm = getActivity().getPackageManager();
    setRetainInstance(true);
    preferences = PreferenceManager
        .getDefaultSharedPreferences(getActivity());
    editor = preferences.edit();
    setHasOptionsMenu(true);
    
  }

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    if (savedInstanceState == null){
      startNewAsyncTask();
      super.onCreate(savedInstanceState);
      data = new ArrayList<PackageItem>();
    }
    
  }
  
  @Override
  public void onPrepareOptionsMenu(Menu menu) {
    MenuItem menuitem = menu.findItem(R.id.search);
    if(showSearch.get())
      menuitem.setVisible(true);
    
  }
  
  @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    
      inflater.inflate(R.menu.options_menu, menu);
      
   // Associate searchable configuration with the SearchView
      SearchManager searchManager =
             (SearchManager) getActivity().getSystemService(Context.SEARCH_SERVICE);
      searchView = (SearchView) menu.findItem(R.id.search).getActionView();
      searchView.setSearchableInfo(
              searchManager.getSearchableInfo(getActivity().getComponentName()));
      searchView.setOnQueryTextListener(this);
      searchView.setOnCloseListener(this);
      
    
  }
  
  @Override
  public void onResume(){
    super.onResume();
    getListView().setFastScrollEnabled(true);
    getListView().setTextFilterEnabled(true);
    iconNames = new ArrayList<String>(Arrays.asList(getActivity().getResources().getStringArray(R.array.icon_file_names)));
    packageNames = new ArrayList<String>(Arrays.asList(getActivity().getResources().getStringArray(R.array.package_names)));

  }
  
  public void onListItemClick(ListView l, View v, int position, long id) {

    PackageItem item = (PackageItem) getListAdapter().getItem(position);
    
    int index = packageNames.indexOf(item.getPackageName());
    if (index != -1){
      int iconId = getActivity().getResources()
          .getIdentifier(iconNames.get(index)  , "drawable",
              getActivity().getPackageName());
      if (iconId != 0){
        editor.remove("iconExt"+getActivity().getIntent().getStringExtra("ext").substring(6));
        editor.putString("icon_preference"+getActivity().getIntent().getStringExtra("ext").substring(6),iconNames.get(index));
        editor.putString("icon_preference_default_"+getActivity().getIntent().getStringExtra("ext").substring(6),iconNames.get(index));
      }
        
    }
    
    editor.putString(getActivity().getIntent().getStringExtra("ext"),
        item.getPackageName());
    editor.commit();
    Toast.makeText(getActivity(), item.getName() + " added.",
        Toast.LENGTH_LONG).show();
    getActivity().finish();

  }
  
  private void startNewAsyncTask() {
    if (!loadComplete.get() && !asyncFired.get()){
      asyncTask = new ListAppTask(this, getActivity());
      asyncTask.execute();
    }
    
  }
  
  @Override
  public void onDestroy(){
    super.onDestroy();
    if (asyncTask.cancel(true))
      Log.v("DashNotifier", "AppList loading canceled");
    
  }
  
  
  private class ListAppTask extends AsyncTask<Void, Void, List<PackageItem>> {
    private ArrayList<String> sections = new ArrayList<String>();
        private ArrayList<Integer> positions = new ArrayList<Integer>();
    private WeakReference<AppListFragment> fragmentWeakRef;
    private Context mContext;
    
    private ListAppTask(AppListFragment fragment, Context context) {
      this.fragmentWeakRef = new WeakReference<AppListFragment>(fragment);
      this.mContext = context;
      asyncFired.compareAndSet(false, true);
      System.out.println("Starting Async");
    }

    @Override
    protected List<PackageItem> doInBackground(Void... args) {
      String lastSectionIndex = null;
          int offset = 0;
      
          
      List<ApplicationInfo> listInfo = pm.getInstalledApplications(0);
      Collections.sort(listInfo,
          new ApplicationInfo.DisplayNameComparator(pm));
      List<PackageItem> data = new ArrayList<PackageItem>();

      for (ApplicationInfo content : listInfo) {
        String sectionIndex;
        try {
          if ((content.flags != ApplicationInfo.FLAG_SYSTEM)
              && content.enabled) {
            
              data.add(new PackageItem(content.packageName, 
                  pm.getApplicationLabel(content).toString(),
                  pm.getApplicationIcon(content.packageName)));
              
              if (pm.getApplicationLabel(content).toString().isEmpty()) {
                        sectionIndex = "";
                    } else {
                        sectionIndex = pm.getApplicationLabel(content).toString().substring(0, 1).toUpperCase();
                    }
              if (lastSectionIndex == null) {
                        lastSectionIndex = sectionIndex;
                    }
              
                    if (!TextUtils.equals(sectionIndex, lastSectionIndex)) {
                        sections.add(sectionIndex);
                        positions.add(offset);
                        lastSectionIndex = sectionIndex;
                    }
                    offset++;
            
          }
        } catch (Exception e) {

        }
      }
      
      return data;
    }

    @Override
    protected void onPostExecute(List<PackageItem> result) {
      data.clear();
      data.addAll(result);
      adapter = new PackageAdapter(mContext, data);
      adapter.notifyDataSetChanged();
      if (this.fragmentWeakRef.get() != null) {
        setListAdapter(adapter);
        adapter.setSection(sections, positions);
        showSearch.compareAndSet(false, true);
        loadComplete.compareAndSet(false, true);
        fragmentWeakRef.get().getFragmentManager().invalidateOptionsMenu();
        //getListView().setFastScrollAlwaysVisible(true);
      }
    }
  }


  @Override
  public boolean onClose() {
    
    return false;
  }

  @Override
  public boolean onQueryTextChange(String queryString) {
    adapter.getFilter().filter(queryString);
    return true;
  }

  @Override
  public boolean onQueryTextSubmit(String queryString) {
    if (searchView != null) {
            InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(
                    Context.INPUT_METHOD_SERVICE);
            if (imm != null) {
                imm.hideSoftInputFromWindow(searchView.getWindowToken(), 0);
            }
            searchView.clearFocus();
        }
        return true;
  }
}
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