Android Open Source - dCache-Cloud Main Activity

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License

The source code is released under:
Copyright ? 2013, Michael Stapelberg and contributors All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following ...
If you think the Android project dCache-Cloud listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

package de.desy.dCacheCloud.Activities;
 /*from w  ww.j  ava  2s  . c om*/
import java.net.MalformedURLException;
import java.net.URL;
import java.security.KeyPair;
import java.util.Vector;

import External.IntentIntegrator;
import External.IntentResult;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.LayoutInflater;
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.EditText;
import android.widget.ListView;
import android.widget.Toast;
import de.desy.dCacheCloud.CryptoHelper;
import de.desy.dCacheCloud.DatabaseHelper;
import de.desy.dCacheCloud.KeyStoreHelper;
import de.desy.dCacheCloud.R;

public class MainActivity extends Activity implements OnItemClickListener {
 
  private ListView lvMainMenu;
  private Context context;
  private DatabaseHelper dbh;
  
  private static int UPLOAD_REQUEST = 1;
     
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId())
    {
    case R.id.action_addUser:
      IntentIntegrator id = new IntentIntegrator(this);
      id.initiateScan(IntentIntegrator.QR_CODE_TYPES);
      break;
    case R.id.action_upload:
          Intent fileintent = new Intent(Intent.ACTION_GET_CONTENT);
          fileintent.setType("*/*");
          try {
              startActivityForResult(fileintent, UPLOAD_REQUEST);
          } catch (ActivityNotFoundException e) {
            e.printStackTrace();
          }
          break;
    }
    return super.onOptionsItemSelected(item);
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater infl = getMenuInflater();
    infl.inflate(R.menu.main_activity_actions, menu);
    return super.onCreateOptionsMenu(menu);
  }

  @Override
  protected void onDestroy() {
    KeyStoreHelper.close(context);
    super.onDestroy();
  }

  @SuppressWarnings("unused")
  private static boolean isUserDataSet(Context c)
  {
    SharedPreferences preferences = c.getSharedPreferences("de.desy.dCacheCloud_preferences", Context.MODE_PRIVATE);
    String user = preferences.getString("webdav_user", null);
    String password = preferences.getString("webdav_password", null);
    
    if (user != null && password != null)
      return true;
    
    return false;
  }
  
  public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    IntentResult res  = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
    
    if (requestCode == UPLOAD_REQUEST)
    {
      Toast.makeText(getApplicationContext(), "File found", Toast.LENGTH_LONG).show();
      Uri fileUri = intent.getData();
      Intent ulIntent = new Intent(context, UploadActivity.class);
      ulIntent.setType(fileUri.getScheme());
      ulIntent.setAction(Intent.ACTION_SEND);
      ulIntent.putExtra(Intent.EXTRA_STREAM, fileUri);
      startActivity(ulIntent);
    }
    
    if (res != null)
    {
      try
      {
        String name = dbh.getFriendName(res.getContents());
        
        if (name != null)
        {
          Toast.makeText(this, String.format("Friend already exist with name : %s",name), Toast.LENGTH_LONG).show();
        }
        else
        {
          Bundle b = new Bundle();
          b.putString("KEY", res.getContents());
          b.putString("HASH",CryptoHelper.hash(res.getContents()));
          Intent friendFoundIntent = new Intent(this, FriendFoundActivity.class);
          friendFoundIntent.putExtras(b);
          startActivity(friendFoundIntent);
        }
      }
      catch (Exception e)
      {}

    }
  }
  
  /*
   * if finish will initialize other components!
   */
  public void waitForUserPassword()
  {
      LayoutInflater li = LayoutInflater.from(this);
      View promptsView = li.inflate(R.layout.searchprompt, null);
      final AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
      alertDialogBuilder.setView(promptsView);

      final EditText userInput = (EditText) promptsView.findViewById(R.id.user_input);


      // set dialog message
      alertDialogBuilder.setCancelable(false).setNegativeButton("Go",new DialogInterface.OnClickListener() {
              
        public void onClick(DialogInterface dialog,int id) {
                  String user_text = (userInput.getText()).toString();

                  if (KeyStoreHelper.init(getApplicationContext(), user_text) == null)
                  {
                      String message = "The password you have entered is incorrect." + " \n \n" + "Please try again!";
                      AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
                      builder.setTitle("Error");
                      builder.setMessage(message);
                      builder.setPositiveButton("Cancel", null);
                      
                      builder.setNegativeButton("Retry", new DialogInterface.OnClickListener() {
                          @Override
                         public void onClick(DialogInterface dialog, int id) {
                              waitForUserPassword();
                         }
                     });
                      builder.create().show();

                  }
                  else
                  {
                  setContentView(R.layout.activity_main);
                      initialize();
                      KeyStoreHelper.passwordWasCorrect();
                  }
                  }
            }).setPositiveButton("Cancel",new DialogInterface.OnClickListener() {
              public void onClick(DialogInterface dialog,int id) {
              dialog.dismiss();
              }
            }
          );
      AlertDialog alertDialog = alertDialogBuilder.create();
      alertDialog.show();
  }

  /**
   * Initialize the global variables and instantiates the needed classes
   * will call this method after the user input the correct password in method waitForserPassword
   * 
   */
  private void initialize()
  {
    dbh = new DatabaseHelper(context);
  
    KeyStoreHelper.load(context);
    
    if (KeyStoreHelper.getOwnPriv() == null)
    {
      // Key?s have to initialize
      KeyPair pair = CryptoHelper.generateAsymmetricKeyPair(1024);
      KeyStoreHelper.storeOwnAsymmetric(pair);
    }
    
    lvMainMenu = (ListView) findViewById(R.id.listView1);
    
        Vector<String> lvMenuItems = new Vector<String>();
        lvMenuItems.add("Server"); 
        lvMenuItems.add("Einstellungen");
        lvMenuItems.add("Profil");
        lvMenuItems.add("Import");
        lvMainMenu.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, lvMenuItems));
        lvMainMenu.setOnItemClickListener(this);
        
        // for GCM
       //GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
       //String regid = getRegistrationId(this);
  }
    
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    context = this.getApplicationContext();
    
    waitForUserPassword();
  } 


  @Override
  protected void onStop() {
//    KeyStoreHelper.close(context);
    super.onStop();
  }

  @Override
  protected void onStart() {
//    KeyStoreHelper.load(context);
    super.onStart();
  }

  public boolean isNetworkConnected() {
        final ConnectivityManager conMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        final NetworkInfo activeNetwork = conMgr.getActiveNetworkInfo();
        return activeNetwork != null && activeNetwork.getState() == NetworkInfo.State.CONNECTED;
   }

  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
      if (position == 0)
      {
        SharedPreferences preferences = getSharedPreferences("de.desy.dCacheCloud_preferences", Context.MODE_PRIVATE);
        String user = preferences.getString("webdav_user", null);
        String password = preferences.getString("webdav_password", null);
        
        if (isNetworkConnected()) {
          if (user != null && user != "" && password != null && password != "") {
  
                if (android.os.Build.VERSION.SDK_INT > 10) {
                  StrictMode.ThreadPolicy policy = 
                          new StrictMode.ThreadPolicy.Builder().permitAll().build();
                  StrictMode.setThreadPolicy(policy);
                }
                
                Intent intent = new Intent(context, ServerViewActivity.class);
              try {
            intent.putExtra("url", new URL(preferences.getString("webdav_url", null)));
          } catch (MalformedURLException e) {
            e.printStackTrace();
          }
               
              startActivity(intent);
          }
          else {
              Toast.makeText(getApplicationContext(), "Please fill in your user data before trying to use the dCache Cloud!", Toast.LENGTH_LONG).show();                    
          }
        }
        else {
          Toast.makeText(getApplicationContext(), "You are not connected to the internet!", Toast.LENGTH_LONG).show();
        }
      }
      else if (position == 1)
      {
        Intent intent = new Intent(context, SettingsActivity.class);
        startActivity(intent);
      }
      else if (position == 2)
      {
        Intent intent = new Intent(context, ProfileActivity.class);
        startActivity(intent);
        // call profile!
      }
      else if (position == 3)
      {
        Intent intent = new Intent(context, ImportDataActivity.class);
        startActivity(intent);
      }
  }
}
Java Source Code List
