Android Open Source - you2peer File Selection Activity

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License

The source code is released under:

Apache License

Java Source Code

package com.u2p.ui;
/*from ww w.  j  a  va  2  s .co  m*/
import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.support.v4.app.NavUtils;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.u2p.core.db.DbDataSource;

public class FileSelectionActivity extends Activity {

    private static final String TAG = "FileSelection";
    private static final String FILES_TO_UPLOAD = "upload";
    private File mainPath = new File(Environment.getExternalStorageDirectory() + DbDataSource.getMaindir());
    private ArrayList<File> resultFileList;
    
    private ListView directoryView;
    private ArrayList<File> directoryList = new ArrayList<File>();
    private ArrayList<String> directoryNames = new ArrayList<String>();
    private ListView fileView;
  private ArrayList<File> fileList = new ArrayList<File>();
  private ArrayList<String> fileNames = new ArrayList<String>();
  
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_file_selection);
        getActionBar().setDisplayHomeAsUpEnabled(true);

        directoryView = (ListView)findViewById(R.id.directorySelectionList);
        fileView = (ListView)findViewById(R.id.fileSelectionList);
        TextView goUpView = (TextView)findViewById(R.id.goUpTextView);
        goUpView.setClickable(true);
        
        loadLists();
        
        directoryView.setOnItemClickListener(new OnItemClickListener() {
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        mainPath = directoryList.get(position);
        loadLists();
      }
    });
    }

    public void onGoUpClickListener(View v){
      File parent = mainPath.getParentFile();
      Log.d(TAG, parent.toString());
      if(mainPath.equals(Environment.getExternalStorageDirectory())){
        Toast.makeText(this, "Can't exit external storage", Toast.LENGTH_SHORT).show();
      }else{
        mainPath = parent;
        loadLists();
      }
    }
    
  public void onUploadClick(MenuItem item){
      Log.d(TAG, "Upload clicked, finishing activity");
        
      ListView lv = (ListView)findViewById(R.id.fileSelectionList);
        resultFileList = new ArrayList<File>();
        
        for(int i = 0 ; i < lv.getCount() ; i++){
          if(lv.isItemChecked(i)){
            resultFileList.add(fileList.get(i));
          }
        }
        if(resultFileList.isEmpty()){
          Log.d(TAG, "Nada seleccionado");
          finish();
        }
        Log.d(TAG, "Files: "+resultFileList.toString());
        Intent result = this.getIntent();
        result.putExtra(FILES_TO_UPLOAD, resultFileList);
        setResult(Activity.RESULT_OK, result);
      finish();
    }
  
  private void loadLists(){
    FileFilter fileFilter = new FileFilter() {
      public boolean accept(File file) {
        return file.isFile();
      }
    };
    FileFilter directoryFilter = new FileFilter(){
      public boolean accept(File file){
        return file.isDirectory();
      }
    };
    
    if(mainPath.exists() && mainPath.length()>0){
      //Lista de directorios
      File[] tempDirectoryList = mainPath.listFiles(directoryFilter);
      directoryList = new ArrayList<File>();
      directoryNames = new ArrayList<String>();
      for(File file: tempDirectoryList){
        directoryList.add(file);
        directoryNames.add(file.getName());
      }
      ArrayAdapter<String> directoryAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, directoryNames);
          directoryView.setAdapter(directoryAdapter);
          
      //Lista de ficheros
      File[] tempFileList = mainPath.listFiles(fileFilter);
      fileList = new ArrayList<File>();
        fileNames = new ArrayList<String>();
        for(File file : tempFileList){
          fileList.add(file);
          fileNames.add(file.getName());
        }
        
        ArrayAdapter<String> fileAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_multiple_choice, fileNames);
            fileView.setAdapter(fileAdapter);
            Log.d(TAG, "Lists created");
    }
  }
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_file_selection, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                NavUtils.navigateUpFromSameTask(this);
                return true;
        }
        return super.onOptionsItemSelected(item);
    }

}

Java Source Code List

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