Android Open Source - nodechat-android Join Activity

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Back to project page nodechat-android.

License

The source code is released under:

Apache License

Java Source Code

package org.vt.ece4564;
/*from w w w .ja  va 2 s.c o m*/
import java.net.URLEncoder;
import java.util.regex.Pattern;

import org.apache.http.HttpResponse;
import org.json.JSONObject;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnKeyListener;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Toast;

public class JoinActivity extends Activity implements HttpCallback,
    View.OnClickListener {
  private final String TAG = "JoinActivity";

  private HttpUtils utils_ = new HttpUtils();
  private Button joinButton_;
  private EditText joinNickname_;
  private ProgressDialog loadingDialog_;
  private Spinner serverSpinner_;
  private ArrayAdapter serversAdapter_;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.join);

    joinButton_ = (Button) findViewById(R.id.joinButton);
    joinNickname_ = (EditText) findViewById(R.id.joinNickname);
    serverSpinner_ = (Spinner) findViewById(R.id.serverSpinner);
    joinButton_.setOnClickListener(this);
    //joinNickname_.setText("android");
    serversAdapter_ = new ArrayAdapter(this,
        android.R.layout.simple_spinner_item, Options.Chat.SERVERS);
    serversAdapter_
        .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    serverSpinner_.setAdapter(serversAdapter_);
    serverSpinner_.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
           Options.Chat.SERVER_URL = (String) parent.getItemAtPosition(pos);
        }
        public void onNothingSelected(AdapterView<?> parent) {
        }
    });
    joinNickname_.setOnKeyListener(new OnKeyListener() {
      public boolean onKey(View v, int keyCode, KeyEvent event) {
        boolean isEnter = (keyCode == KeyEvent.KEYCODE_ENTER);
        if (isEnter) {
          joinChat();
        }
        return isEnter;
      }
    });
  }

  public void joinChat() {
    String nickname = joinNickname_.getText().toString();
    Log.i(TAG, "Attempting to join chat as " + nickname);
    if (nickname != null || !Pattern.matches("[^\\w_\\-^!]", nickname)) {
      nickname = URLEncoder.encode(nickname);
      StringBuilder url = ChatUtils.getServerUrl();
      String serverName = url.toString().replace("http", "").replace("https","").replace("://", "").replace("www.", "");
      serverName = serverName.substring(0,serverName.length()-1);  //display without trailing /
      loadingDialog_ = ProgressDialog.show(this, "", "Connecting to "+serverName+"...",
          true);
      url.append("join?nick=");
      url.append(nickname);
      
      utils_.doGet(url.toString(), this);
    } else {
      Toast
          .makeText(
              getApplicationContext(),
              "Bad character in nick. Can only have letters, numbers, and '_', '-', '^', '!'",
              1000).show();
    }
  }

  public void onClick(View v) {
    joinChat();
  }

  public void onError(Exception e) {
    loadingDialog_.hide();
    Toast.makeText(getApplicationContext(), "Error: " + e.toString(), 1000)
        .show();
    Log.i(TAG, "@onError: " + e.toString());
  }

  public void onResponse(HttpResponse resp) {
    loadingDialog_.hide();
    JSONObject json = utils_.responseToJSON(resp);
    Log.i(TAG, "@onResponse\n" + json.toString());
    if (json != null) {
      int status = resp.getStatusLine().getStatusCode();
      if (status == 200) {
        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(joinNickname_.getWindowToken(), 0);

        Intent chatIntent = new Intent(getApplicationContext(),
            ChatActivity.class);

        chatIntent.putExtra("json", json.toString());
        startActivity(chatIntent);

      } else {
        String toastText = "Error: " + json.optString("error");
        Toast.makeText(getApplicationContext(), toastText,
            Toast.LENGTH_SHORT).show();
      }
    } else {
      Log.i(TAG, "onResponse's JSON failed");
      Toast.makeText(getApplicationContext(), "Failed to connect.",
          Toast.LENGTH_SHORT).show();
    }
  }
}

Java Source Code List

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