Android Open Source - SerialPlot File Browser Activity

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License

The source code is released under:

MIT License

Java Source Code

package org.SerialPlot;
//w  w w .  j a  v a2s  . co  m
import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Stack;

import android.app.Activity;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;

public class FileBrowserActivity extends ListActivity{
  
  private File currentDir;
  private FileArrayAdapter adapter;
  
  private Stack<File> dirStack = new Stack<File>();
  
  public static String EXTRA_FILE_PATH = "file_path";
  
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    currentDir = new File("/sdcard/");
    fill(currentDir);
  }
  
  private void fill(File f){
    
    File[] dirs = f.listFiles();
    this.setTitle("Current Dir: " + f.getName());
    
    List<Option> dir = new ArrayList<Option>();
    List<Option> fls = new ArrayList<Option>();
    
    try{
      for(File ff : dirs)
      {
        if(ff.isDirectory())
          dir.add(new Option(ff.getName(),"Folder",ff.getAbsolutePath()));
        else
          fls.add(new Option(ff.getName(),"File Size:"+ff.length(),ff.getAbsolutePath()));
      }
    } catch (Exception e) {}
    
    Collections.sort(dir);
    Collections.sort(fls);
    dir.addAll(fls);
    if(!f.getName().equalsIgnoreCase("sdcard"))
      dir.add(0,new Option("..","Parent Directory",f.getParent()));
    
    adapter = new FileArrayAdapter(FileBrowserActivity.this,R.layout.file_view,dir);
    this.setListAdapter(adapter);
  }
  
  @Override
  protected void onListItemClick(ListView l, View v, int position, long id){
    super.onListItemClick(l, v, position, id);
    Option o = adapter.getItem(position);
    if(o.getData().equalsIgnoreCase("folder")) {
      dirStack.push(currentDir);
      currentDir = new File(o.getPath());
      fill(currentDir);
    }
    else if (o.getData().equalsIgnoreCase("parent directory")) {
      currentDir = dirStack.pop();
      fill(currentDir);
    }
    else {
      onFileClick(o);
    }
  }
  
  private void onFileClick(Option o)
  {
    // Create the result Intent and include the MAC address
        Intent intent = new Intent();
        intent.putExtra(EXTRA_FILE_PATH, o.getPath());
        
        // Set result and finish this Activity
        setResult(Activity.RESULT_OK, intent);
        finish();
  }
  
  @Override
  public void onBackPressed() {
    if (dirStack.size() == 0)
    {
      finish();
      return;
    }
    currentDir = dirStack.pop();
    fill(currentDir);
  }

}

Java Source Code List

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