hi guys i don't know why when i click on "register" i have this exception:"E/AndroidRuntime: FATAL EXCEPTION: main java.lang.NullPointerException".
at info.androidhive.materialtabs.activity.RegisterActivity.registerUser(RegisterActivity.java:247)
at info.androidhive.materialtabs.activity.RegisterActivity.access$800(RegisterActivity.java:37)
at info.androidhive.materialtabs.activity.RegisterActivity$1.onClick(RegisterActivity.java:114)
Now i show you my code:
ps: I hope that you can help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
REGISTER ACTIVITY:
public class RegisterActivity extends Activity {
private static final String TAG = RegisterActivity.class.getSimpleName();
private Button btnRegister;
private Button btnLinkToLogin;
private EditText inputFullName;
private EditText inputFullCognome;
private EditText inputEmail;
private EditText inputPassword;
private EditText inputEmail2;
private EditText inputNumeroAppartamento;
private EditText inputNomeEdificio;
private EditText inputZonaMetropolitana;
private ProgressDialog pDialog;
private SessionManager session;
private SQLiteHandler db;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
inputFullName = (EditText) findViewById(R.id.name);
inputFullCognome=(EditText) findViewById(R.id.cognome);
inputEmail = (EditText) findViewById(R.id.numero_telefonico);
inputEmail2 = (EditText) findViewById(R.id.email2);
inputNumeroAppartamento = (EditText) findViewById(R.id.numero_appartamento);
inputNomeEdificio = (EditText) findViewById(R.id.nome_edificio);
inputZonaMetropolitana = (EditText) findViewById(R.id.zona_metropolitana);
inputPassword = (EditText) findViewById(R.id.password);
btnRegister = (Button) findViewById(R.id.btnRegister);
btnLinkToLogin = (Button) findViewById(R.id.btnLinkToLoginScreen);
// Progress dialog
pDialog = new ProgressDialog(this);
pDialog.setCancelable(false);
// Session manager
session = new SessionManager(getApplicationContext());
// SQLite database handler
db = new SQLiteHandler(getApplicationContext());
// Check if user is already logged in or not
if (session.isLoggedIn()) {
// User is already logged in. Take him to main activity
Intent intent = new Intent(RegisterActivity.this,
// MainActivity.class);
DopoLogin.class);
startActivity(intent);
finish();
}
// Register Button Click event
btnRegister.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
String name = inputFullName.getText().toString().trim();
String cognome = inputFullCognome.getText().toString().trim();
String email = inputEmail.getText().toString().trim();
String password = inputPassword.getText().toString().trim();
String email2 = inputEmail2.getText().toString().trim();
String numero_appartamento = inputNumeroAppartamento.getText().toString().trim();
String nome_edificio = inputNomeEdificio.getText().toString().trim();
String zona_metropolitana = inputZonaMetropolitana.getText().toString().trim();
boolean ok=false;
// ok=isValidEmailAddress(email2);
if (!name.isEmpty() && !email.isEmpty() && !password.isEmpty()&& !cognome.isEmpty()&& !email2.isEmpty()&& !numero_appartamento.isEmpty()&& !nome_edificio.isEmpty()&& !zona_metropolitana.isEmpty()) {
registerUser(name,cognome, email, password,email2,numero_appartamento,nome_edificio,zona_metropolitana);
} else {
Toast.makeText(getApplicationContext(),
"Please enter all your details or check your email if it is correct!", Toast.LENGTH_LONG)
.show();
}
}
});
// Link to Login Screen
btnLinkToLogin.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent i = new Intent(getApplicationContext(),
LoginActivity.class);
startActivity(i);
finish();
}
});
}
public static boolean isValidEmailAddress(String email2) {
String emailRegEx;
Pattern pattern;
// Regex for a valid email address
emailRegEx = "^[A-Za-z0-9._%+\\-]+@[A-Za-z0-9.\\-]+\\.[A-Za-z]{2,4}$";
// Compare the regex with the email address
pattern = Pattern.compile(emailRegEx);
Matcher matcher = pattern.matcher(email2);
if (!matcher.find()) {
return false;
}
return true;
}
/**
* Function to store user in MySQL database will post params(tag, name,
* email, password) to register url
* */
private void registerUser(final String name,final String cognome, final String email,
final String password,final String email2,final String numero_appartamento,final String nome_edificio,final String zona_metropolitana) {
// Tag used to cancel the request
String tag_string_req = "req_register";
pDialog.setMessage("Registering ...");
showDialog();
StringRequest strReq = new StringRequest(Method.POST,
AppConfig.URL_REGISTER, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, "Register Response: " + response.toString());
hideDialog();
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
if (!error) {
// User successfully stored in MySQL
// Now store the user in sqlite
String uid = jObj.getString("uid");
JSONObject user = jObj.getJSONObject("user");
String name = user.getString("name");
String cognome = user.getString("cognome");
String email = user.getString("email");
String email2 = user.getString("email2");
String numero_appartamento = user.getString("numero_appartamento");
String nome_edificio = user.getString("nome_edificio");
String zona_metropolitana = user.getString("zona_metropolitana");
String created_at = user
.getString("created_at");
// Inserting row in users table
db.addUser(name,cognome, email,email2,numero_appartamento,nome_edificio,zona_metropolitana, uid, created_at);
Toast.makeText(getApplicationContext(), "User successfully registered. Try login now!", Toast.LENGTH_LONG).show();
// Launch login activity
Intent intent = new Intent(
RegisterActivity.this,
LoginActivity.class);
startActivity(intent);
finish();
} else {
// Error occurred in registration. Get the error
// message
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(),
errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Registration Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
}) {
@Override
protected Map<String, String> getParams() {
// Posting params to register url
Map<String, String> params = new HashMap<String, String>();
params.put("name", name);
params.put("cognome", cognome);
params.put("email", email);
params.put("password", password);
params.put("email2", email2);
params.put("numero_appartamento", numero_appartamento);
params.put("nome_edificio", nome_edificio);
params.put("zona_metropolitana", zona_metropolitana);
return params;
}
};
// Adding request to request queue
AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}
private void showDialog() {
if (!pDialog.isShowing())
pDialog.show();
}
private void hideDialog() {
if (pDialog.isShowing())
pDialog.dismiss();
}
}
XML ACTIVITY REGISTER:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/bg_register"
android:gravity="center"
android:orientation="vertical"
android:padding="10dp" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="vertical"
android:paddingLeft="20dp"
android:paddingRight="20dp" >
<EditText
android:id="@+id/name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="100dp"
android:layout_marginBottom="10dp"
android:background="@color/input_register_bg"
android:hint="@string/hint_name"
android:padding="10dp"
android:singleLine="true"
android:inputType="textCapWords"
android:textColor="@color/input_register"
android:textColorHint="@color/input_register_hint" />
<EditText
android:id="@+id/cognome"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:background="@color/input_register_bg"
android:hint="@string/hint_cognome"
android:inputType="textCapWords"
android:padding="10dp"
android:singleLine="true"
android:textColor="@color/input_register"
android:textColorHint="@color/input_register_hint" />
<EditText
android:id="@+id/numero_telefonico"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:background="@color/input_register_bg"
android:hint="@string/hint_numero_telefonico"
android:inputType="number"
android:padding="10dp"
android:singleLine="true"
android:textColor="@color/input_register"
android:textColorHint="@color/input_register_hint" />
<EditText
android:id="@+id/password"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:background="@color/input_register_bg"
android:hint="@string/hint_password"
android:inputType="textPassword"
android:padding="10dp"
android:singleLine="true"
android:textColor="@color/input_register"
android:textColorHint="@color/input_register_hint" />
<EditText
android:id="@+id/email2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:background="@color/input_register_bg"
android:hint="@string/hint_email2"
android:inputType="textEmailAddress"
android:padding="10dp"
android:singleLine="true"
android:textColor="@color/input_register"
android:textColorHint="@color/input_register_hint" />
<EditText
android:id="@+id/numero_appartamento"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:background="@color/input_register_bg"
android:hint="@string/hint_appartment_number"
android:inputType="number"
android:padding="10dp"
android:singleLine="true"
android:textColor="@color/input_register"
android:textColorHint="@color/input_register_hint" />
<EditText
android:id="@+id/nome_edificio"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:background="@color/input_register_bg"
android:hint="@string/hint_building_name"
android:inputType="textCapWords"
android:padding="10dp"
android:singleLine="true"
android:textColor="@color/input_register"
android:textColorHint="@color/input_register_hint" />
<EditText
android:id="@+id/zona_metropolitana"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:background="@color/input_register_bg"
android:hint="@string/hint_area"
android:inputType="textCapWords"
android:padding="10dp"
android:singleLine="true"
android:textColor="@color/input_register"
android:textColorHint="@color/input_register_hint" />
<EditText
android:id="@+id/città"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:background="@color/input_register_bg"
android:hint="@string/hint_city"
android:inputType="textCapWords"
android:padding="10dp"
android:singleLine="true"
android:textColor="@color/input_register"
android:textColorHint="@color/input_register_hint" />
<!-- Login Button -->
<Button
android:id="@+id/btnRegister"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:background="#ea4c88"
android:text="@string/btn_register"
android:textColor="@color/white" />
<!-- Link to Login Screen -->
<Button
android:id="@+id/btnLinkToLoginScreen"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dip"
android:background="@null"
android:text="@string/btn_link_to_login"
android:textAllCaps="false"
android:textColor="@color/white"
android:textSize="15dp" />
</LinearLayout>
</ScrollView>
APP CONTROLLER:
public class AppController extends Application {
public static final String TAG = AppController.class.getSimpleName();
private com.android.volley.RequestQueue mRequestQueue;
private static AppController mInstance;
@Override
public void onCreate() {
super.onCreate();
mInstance = this;
}
public static synchronized AppController getInstance() {
return mInstance;
}
public com.android.volley.RequestQueue getRequestQueue() {
if (mRequestQueue == null) {
mRequestQueue = Volley.newRequestQueue(getApplicationContext());
}
return mRequestQueue;
}
public <T> void addToRequestQueue(Request<T> req, String tag) {
req.setTag(TextUtils.isEmpty(tag) ? TAG : tag);
getRequestQueue().add(req);
}
public <T> void addToRequestQueue(Request<T> req) {
req.setTag(TAG);
getRequestQueue().add(req);
}
public void cancelPendingRequests(Object tag) {
if (mRequestQueue != null) {
mRequestQueue.cancelAll(tag);
}
}
private class RequestQueue {
public <T> void add(Request<T> req) {
}
}
}
