I'm trying to get the value the user enters in the userNameVar and passwordVar variables, and then compare them to the values stored in my database. However, when I enter the details, which are the same as what I have stored in my database, I get the following message:
Here is my login class code
public class Login extends AppCompatActivity implements View.OnClickListener {
private EditText usernameField;
private EditText passwordField;
private static Button login_btn;
TextView register_link;
String userNameVar = "";
String passwordVar = "";
private ProgressDialog pDialog;
JSONParser jParser = new JSONParser();
User userObj;
DatabaseUserList databaseUserList = new DatabaseUserList();
private static final String TAG_SUCCESSFUL = "Successful";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login_page);
login_btn = (Button) findViewById(R.id.login_button);
usernameField = (EditText) findViewById(R.id.etUsername);
passwordField = (EditText) findViewById(R.id.etPassword);
//starts to listen for clicks on this button
login_btn.setOnClickListener(this);
register_link = (TextView) findViewById(R.id.register_link);
register_link.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.login_button:
//null object reference problem here
Log.d("Username and password",
userNameVar = usernameField.getText().toString();
passwordVar = passwordField.getText().toString();
usernameField.getText().toString());
validateUser(userNameVar, passwordVar);
break;
}
}
private void validateUser (String username, String password)
{
new LogtheuserIn().execute();
}
private void resultsofloginAttmempt(User u)
{
if(u != null)
{
Log.d("User", userObj.toString() + "User must have logged in successfully");
}
}
private void userLoggedIn()
{
Intent intent = new Intent(this, FirstPage.class);
//User has to implement serializable
intent.putExtra("Userisin", userObj);
startActivity(intent);
}
public class LogtheuserIn extends AsyncTask<String,String,String>
{
@Override
protected void onPreExecute()
{
Log.d("onPrexecute", "on the preExecutePart");
pDialog = new ProgressDialog(Login.this);
pDialog.setMessage("Loading users");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected String doInBackground(String... args)
{
List<NameValuePair> arguements = new ArrayList<NameValuePair>();
try{
Log.d("This is the username ", "and password taken from the input fields");
String loginDetails = ServerConnection.SERVER_ADDRESS + "login.php?userName=" + userNameVar + "?password" + passwordVar;
JSONObject jObject = jParser.makeHttpRequest(loginDetails, "GET", arguements);
Log.d("All users", jObject.toString());
int success = jObject.getInt(TAG_SUCCESSFUL);
} catch (Exception e) {
pDialog.dismiss();
runOnUiThread(new Runnable()
{
public void run()
{
Toast.makeText(getApplicationContext(), "Problem with the server",
Toast.LENGTH_SHORT).show();
}
});
}
return null;
}
protected void onPostExecute(String dismissable)
{
//Dismiss the dialogue after we have
//gotten the user(s)
pDialog.dismiss();
Login.this.runOnUiThread(
new Runnable() {
public void run()
{
resultsofloginAttmempt(userObj);
Log.d("Array details", databaseUserList.getListOfUsers().toString());
}
}
);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_login, 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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
