Android Open Source - dcchat Servers Activity

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License

The source code is released under:

Apache License

Java Source Code

package net.kaleidos.dcchat;
//  w w  w  . j a va  2 s.c  o m
import java.util.ArrayList;
import java.util.Arrays;

import net.kaleidos.dcchat.async.DcChatAsyncTask;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;

public class ServersActivity extends ActionBarActivity {
  public static final String PREFS_NAME = "DcChatPreferences";
  private static final String DEFAULT_SERVER_LIST = "adcs://dc.p2plibre.es:2780;adc://dc.ekparty.org:2783;";
  private ArrayList<String> serverList;
  private ArrayAdapter<String> serverListAdapter;
  private SharedPreferences settings;

  String userName;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_servers);

    this.setTitle((String) getResources().getText(R.string.select_server));

    serverList = new ArrayList<String>();

    final ListView listview = (ListView) findViewById(R.id.serverList);

    settings = getSharedPreferences(PREFS_NAME, 0);

    userName = settings.getString("username",
        "user" + System.currentTimeMillis());

    String serversString = settings.getString("servers", "");

    if (serversString.equals("")) {
      serversString = DEFAULT_SERVER_LIST;
      serverList.addAll(Arrays.asList(serversString.split(";")));
      serverList
          .add((String) getResources().getText(R.string.new_server));
    } else {
      serverList.addAll(Arrays.asList(serversString.split(";")));
    }

    serverListAdapter = new ArrayAdapter<String>(this, R.layout.server_row,
        serverList);
    listview.setAdapter(serverListAdapter);

    listview.setOnItemClickListener(new OnItemClickListener() {

      @Override
      public void onItemClick(AdapterView<?> parentView, View childView,
          int position, long id) {

        selectServer(position);
      }
    });
    listview.setOnItemLongClickListener(new OnItemLongClickListener() {

      @Override
      public boolean onItemLongClick(AdapterView<?> parentView,
          View childView, int position, long id) {
        // TODO Auto-generated method stub
        removeServerDialog(position);
        return true;
      }
    });

  }

  public void removeServerDialog(final int position) {
    if (position != serverList.size() - 1) {
      AlertDialog.Builder alert = new AlertDialog.Builder(this);

      alert.setTitle("Delete server");
      alert.setMessage("Are you sure?");

      alert.setPositiveButton("Ok",
          new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,
                int whichButton) {
              removeServer(position);
            }
          });

      alert.setNegativeButton("Cancel",
          new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,
                int whichButton) {
              // Canceled.
            }
          });

      alert.show();
    }
  }

  private void setUserName() {
    // Create new server
    AlertDialog.Builder alert = new AlertDialog.Builder(this);

    alert.setTitle("Set your user name");
    alert.setMessage("User name");

    // Set an EditText view to get user input
    final EditText input = new EditText(this);
    alert.setView(input);
    input.setText(userName);

    alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
      public void onClick(DialogInterface dialog, int whichButton) {
        String value = input.getText().toString();
        userName = value;
        Editor editor = settings.edit();

        editor.putString("username", userName);
        editor.commit();
      }
    });

    alert.setNegativeButton("Cancel",
        new DialogInterface.OnClickListener() {
          public void onClick(DialogInterface dialog, int whichButton) {
            // Canceled.
          }
        });

    alert.show();

  }

  public void selectServer(int position) {

    if (position == serverList.size() - 1) {
      // Create new server
      AlertDialog.Builder alert = new AlertDialog.Builder(this);

      alert.setTitle("Create new server");
      alert.setMessage("Server address");

      // Set an EditText view to get user input
      final EditText input = new EditText(this);
      alert.setView(input);

      alert.setPositiveButton("Ok",
          new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,
                int whichButton) {
              String value = input.getText().toString();
              createServer(value);
            }
          });

      alert.setNegativeButton("Cancel",
          new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,
                int whichButton) {
              // Canceled.
            }
          });

      alert.show();

    } else {
      // Connect to server
      connectToServer(position);
    }

  }

  private void connectToServer(int position) {

    if (position != serverList.size() - 1) {
      String server = serverList.get(position);
      Intent intent = new Intent(this, ChatActivity.class);
      intent.putExtra("server", server);
      intent.putExtra("username", userName);

      ServersActivity.this.startActivity(intent);

    }

  }

  private void createServer(String name) {
    serverList.remove(serverList.size() - 1);
    serverList.add(name);
    serverList.add((String) getResources().getText(R.string.new_server));
    serverListAdapter.notifyDataSetChanged();

    saveServerList();

  }

  public void removeServer(int position) {
    if (position != serverList.size() - 1) {
      serverList.remove(position);
      serverListAdapter.notifyDataSetChanged();
      saveServerList();
    }
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.servers, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
      setUserName();
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  private void saveServerList() {
    StringBuffer sb = new StringBuffer();
    for (String s : serverList) {
      sb.append(s);
      sb.append(";");
    }

    if (sb.length() > 0) {
      // Remove last ";"
      sb.deleteCharAt(sb.length() - 1);
    }

    Editor editor = settings.edit();

    editor.putString("servers", sb.toString());
    editor.commit();

  }
}

Java Source Code List

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