Android Open Source - bookreader Main Activity

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Back to project page bookreader.
License

The source code is released under:
GNU General Public License
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Java Source Code

/*
 * Copyright 2011 The Android Open Source Project
 *//w ww .  ja v  a2 s .c o m
 * 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.example.android.actionbarcompat;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Environment;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {
    
  
  private boolean mAlternateTitle = false;
    Map<String, ?> historylistmap = null;
    
    
    
    private static final int menuInflate[] = {
      R.menu.main,R.menu.history_select_menu
    };
    private int menuIndex=0;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ListView listview=null;
        listview=new ListView(this);
        setContentView(listview);
        
        
        ListAdapter adapter = new ArrayAdapter<String>(this, R.layout.main,R.id.historylist,getHistoryList());
        listview.setAdapter(adapter);
        listview.setOnItemClickListener(new OnItemClickListener(){

      @Override
      public void onItemClick(AdapterView<?> parent, View view,
          int position, long id) {
        
        clickHistory((String)historylistmap.get(getHistoryList().get(position)));
      }
        });
        //listview.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
    }
    /* (non-Javadoc)
   * @see android.app.Activity#onBackPressed()
   */
  @Override
  public void onBackPressed() {
    // TODO Auto-generated method stub
    
    if(menuIndex==1){
      menuIndex=0;
      onResume();
      return;
    }
    super.onBackPressed();
  }
    public List<String> getHistoryList(){
      List<String> history=null;
      SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE);
        historylistmap = sharedPref.getAll();
        history=new ArrayList<String>();
        history.addAll(historylistmap.keySet());
        return history;
    }

    public void clickHistory(String position){
      Intent intent = new Intent(this, PagesofBooks.class);
    intent.putExtra("txtPath", position);
    startActivity(intent);
    }
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater menuInflater = getMenuInflater();
        menuInflater.inflate(menuInflate[menuIndex], menu);

        // Calling super after populating the menu is necessary here to ensure that the
        // action bar helpers have a chance to handle this event.
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                Toast.makeText(this, "Tapped home", Toast.LENGTH_SHORT).show();
                break;

            case R.id.menu_search:
                //Toast.makeText(this, "Tapped search", Toast.LENGTH_SHORT).show();
              goNextActivity();
                break;
            case R.id.menu_share:
              dellist();
                break;
            case R.id.menu_del:
                itemDel();
                break;
            case R.id.menu_selectall:
                
                break;
        }
        return super.onOptionsItemSelected(item);
    }
    
    /* (non-Javadoc)
   * @see android.app.Activity#onResume()
   */
  @Override
  protected void onResume() {
    
    super.onResume();
    menuIndex=0;
    ListView listview=null;
        listview=new ListView(this);
        
        
        
        ListAdapter adapter = new ArrayAdapter<String>(this, R.layout.main,R.id.historylist,getHistoryList());
        listview.setAdapter(adapter);
        listview.setOnItemClickListener(new OnItemClickListener(){

      @Override
      public void onItemClick(AdapterView<?> parent, View view,
          int position, long id) {
        
        clickHistory((String)historylistmap.get(getHistoryList().get(position)));
      }
        });
        setContentView(listview);
    
  }
    /**
     * ?????????
     */
    private void dellist() {
      ListView lview=null;
      lview=new ListView(this);
      lview.setId(R.id.dellist);
      lview.setAdapter(new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_multiple_choice, getHistoryList()));
      lview.setItemsCanFocus(false);
        lview.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
        setContentView(lview);
        menuIndex=1;
        
  }

    /**
     * 
     * ??????
     */
    public void itemDel(){
      SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE);
      SharedPreferences sharedPrefbookpages = getSharedPreferences("PagesofBooks", Context.MODE_PRIVATE);
      ListView lview = (ListView)findViewById(R.id.dellist);
      long[] itemids=lview.getCheckItemIds();
      SharedPreferences.Editor editor = sharedPref.edit();
      SharedPreferences.Editor bookpageseditor = sharedPrefbookpages.edit();
      for(long delid:itemids){
        editor.remove(getHistoryList().get((int)delid));
        bookpageseditor.remove(getHistoryList().get((int)delid)+"_bookmark");
        bookpageseditor.remove(getHistoryList().get((int)delid)+"_positionpre");
      }
      editor.commit();
      bookpageseditor.commit();
      dellist();
      

    }
    @Override
    public boolean onPrepareOptionsMenu (Menu menu){
      menu.clear();
      MenuInflater menuInflater = getMenuInflater();
        menuInflater.inflate(menuInflate[menuIndex], menu);
    return super.onPrepareOptionsMenu(menu);
      
    }

  public void goNextActivity(){
      Intent intent = new Intent(this,FileList.class);
      startActivity(intent);
    }
    /* Checks if external storage is available for read and write */
    public boolean isExternalStorageWritable() {
        String state = Environment.getExternalStorageState();
        if (Environment.MEDIA_MOUNTED.equals(state)) {
            return true;
        }
        return false;
    }

    /* Checks if external storage is available to at least read */
    public boolean isExternalStorageReadable() {
        String state = Environment.getExternalStorageState();
        if (Environment.MEDIA_MOUNTED.equals(state) ||
            Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
            return true;
        }
        return false;
    }
    public File getAlbumStorageDir(String albumName) {
        // Get the directory for the user's public pictures directory. 
        File file = Environment.getExternalStorageDirectory();
        return file;
    }

}
Java Source Code List
