GOOD DAY Everyone!
i am new in android programming and i am facing an error in logcat and there is no error in console. i tried searching it over and over but it seems i am the only one facing these errors.
BTW this codes are not mine, i found it on a tutorial to be particular it is the "Sinch Group Chat" if you will search on google this one is kind of popular. aside from it is from google i adapt it on Eclipse, i believe they made this tutorial for Android Studio.
09-24 13:47:52.195: E/AndroidRuntime(1467): FATAL EXCEPTION: main
09-24 13:47:52.195: E/AndroidRuntime(1467): Process: com.groupchat, PID: 1467
09-24 13:47:52.195: E/AndroidRuntime(1467): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.groupchat/com.groupchat.LogIn}: java.lang.NullPointerException
09-24 13:47:52.195: E/AndroidRuntime(1467): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)
09-24 13:47:52.195: E/AndroidRuntime(1467): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
09-24 13:47:52.195: E/AndroidRuntime(1467): at android.app.ActivityThread.access$800(ActivityThread.java:135)
09-24 13:47:52.195: E/AndroidRuntime(1467): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
09-24 13:47:52.195: E/AndroidRuntime(1467): at android.os.Handler.dispatchMessage(Handler.java:102)
09-24 13:47:52.195: E/AndroidRuntime(1467): at android.os.Looper.loop(Looper.java:136)
09-24 13:47:52.195: E/AndroidRuntime(1467): at android.app.ActivityThread.main(ActivityThread.java:5001)
09-24 13:47:52.195: E/AndroidRuntime(1467): at java.lang.reflect.Method.invokeNative(Native Method)
09-24 13:47:52.195: E/AndroidRuntime(1467): at java.lang.reflect.Method.invoke(Method.java:515)
09-24 13:47:52.195: E/AndroidRuntime(1467): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
09-24 13:47:52.195: E/AndroidRuntime(1467): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
09-24 13:47:52.195: E/AndroidRuntime(1467): at dalvik.system.NativeStart.main(Native Method)
09-24 13:47:52.195: E/AndroidRuntime(1467): Caused by: java.lang.NullPointerException
09-24 13:47:52.195: E/AndroidRuntime(1467): at com.parse.Parse.getParseDir(Parse.java:313)
09-24 13:47:52.195: E/AndroidRuntime(1467): at com.parse.ParseCorePlugins.getCurrentUserController(ParseCorePlugins.java:124)
09-24 13:47:52.195: E/AndroidRuntime(1467): at com.parse.ParseUser.getCurrentUserController(ParseUser.java:56)
09-24 13:47:52.195: E/AndroidRuntime(1467): at com.parse.ParseUser.getCurrentUser(ParseUser.java:892)
09-24 13:47:52.195: E/AndroidRuntime(1467): at com.parse.ParseUser.getCurrentUser(ParseUser.java:879)
09-24 13:47:52.195: E/AndroidRuntime(1467): at com.groupchat.LogIn.onCreate(LogIn.java:35)
09-24 13:47:52.195: E/AndroidRuntime(1467): at android.app.Activity.performCreate(Activity.java:5231)
09-24 13:47:52.195: E/AndroidRuntime(1467): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
09-24 13:47:52.195: E/AndroidRuntime(1467): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
09-24 13:47:52.195: E/AndroidRuntime(1467): ... 11 more
and this is my Login.java
package com.groupchat;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import com.parse.LogInCallback;
import com.parse.ParseException;
import com.parse.ParseUser;
import com.parse.SignUpCallback;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class LogIn extends Activity {
private Button signUpButton;
private Button loginButton;
private EditText usernameField;
private EditText passwordField;
private String username;
private String password;
private Intent intent;
private Intent serviceIntent;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
intent = new Intent(getApplicationContext(), ListUsersActivity.class);
serviceIntent = new Intent(getApplicationContext(), MessageService.class);
ParseUser currentUser = ParseUser.getCurrentUser();
if (currentUser != null) {
startActivity(intent);
startService(serviceIntent);
}
setContentView(R.layout.activity_log_in);
loginButton = (Button) findViewById(R.id.loginButton);
signUpButton = (Button) findViewById(R.id.signupButton);
usernameField = (EditText) findViewById(R.id.loginUsername);
passwordField = (EditText) findViewById(R.id.loginPassword);
loginButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
username = usernameField.getText().toString();
password = passwordField.getText().toString();
ParseUser.logInInBackground(username, password, new LogInCallback() {
public void done(ParseUser user, com.parse.ParseException e) {
if (user != null) {
startActivity(intent);
startService(serviceIntent);
} else {
Toast.makeText(getApplicationContext(),
"Wrong username/password combo",
Toast.LENGTH_LONG).show();
}
}
});
}
});
signUpButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
username = usernameField.getText().toString();
password = passwordField.getText().toString();
ParseUser user = new ParseUser();
user.setUsername(username);
user.setPassword(password);
user.signUpInBackground(new SignUpCallback() {
public void done(com.parse.ParseException e) {
if (e == null) {
startActivity(intent);
startService(serviceIntent);
} else {
Toast.makeText(getApplicationContext(),
"There was an error signing up."
, Toast.LENGTH_LONG).show();
}
}
});
}
});
}
@Override
public void onDestroy() {
stopService(new Intent(this, MessageService.class));
super.onDestroy();
}
}
there are no errors on Console.
THANK YOU!
