Progress Bar doesn't appear in Android project with setProgressBarIndeterminateVisibility()

compile 'com.jakewharton:butterknife:6.1.0'

/* AndroidManifest.xml */
```<activity
            android:name=".LoginActivity"
            android:label="@string/title_activity_login"
            android:parentActivityName=".MainActivity"
            android:screenOrientation="portrait"
           android:theme="@android:style/Theme.Holo.Light.DarkActionBar" >```


/* build.gradle (app) */
```minSdkVersion 14```

Using Android Studio 1.1.0.

Hope this helps :D

protected EditText mUsername;
protected EditText mPassword;
protected Button mLoginButton;
protected TextView mSignUpTextView;
@Bind(R.id.progressBar2)ProgressBar mProgressBar2;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_login);
    ButterKnife.bind(this);
    mProgressBar2.setVisibility(View.INVISIBLE);

    //O indicador do progresso tem que ser chamado antes do SetContentView

    mSignUpTextView = (TextView)findViewById(R.id.signUpText);
    mSignUpTextView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(LoginActivity.this, SignUpActivity.class);
            startActivity(intent);
        }
    });

    mUsername = (EditText)findViewById(R.id.usernameField);
    mPassword = (EditText)findViewById(R.id.passwordField);

    mLoginButton = (Button)findViewById(R.id.loginButton);
    mLoginButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String username = mUsername.getText().toString();
            String password = mPassword.getText().toString();


            username = username.trim();
            password = password.trim();

            if(username.isEmpty() || password.isEmpty() ){
                AlertDialog.Builder builder= new AlertDialog.Builder(LoginActivity.this);
                builder.setMessage(R.string.login_error_message)
                        .setTitle(R.string.login_error_title)
                        .setPositiveButton(android.R.string.ok, null);
                AlertDialog dialog = builder.create();
                dialog.show();
            }else{
                //Login
                if(mProgressBar2.getVisibility() == View.INVISIBLE){
                    mProgressBar2.setVisibility(View.VISIBLE);
                }else {
                    mProgressBar2.setVisibility(View.INVISIBLE);
                }
                ParseUser.logInInBackground(username, password, new LogInCallback() {
                    @Override
                    public void done(ParseUser parseUser, ParseException e) {
                        //Como o login foi concluído o indicador de progresso some.
                        mProgressBar2.setVisibility(View.INVISIBLE);
                        if (e==null){
                            //Success!
                            Intent intent = new Intent(LoginActivity.this, MainActivity.class);
                            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
                            startActivity(intent);
                        }else {
                            AlertDialog.Builder builder= new AlertDialog.Builder(LoginActivity.this);
                            builder.setMessage(e.getMessage())
                                    .setTitle(R.string.login_error_title)
                                    .setPositiveButton(android.R.string.ok, null);
                            AlertDialog dialog = builder.create();
                            dialog.show();
                        }
                    }
                });
                }


        }
    });
}

@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);
}

protected EditText mUsername;
protected EditText mPassword;
protected EditText mEmail;
protected Button mSignUpButton;
@Bind(R.id.progressBar) ProgressBar mProgressBar;

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_sign_up);
    ButterKnife.bind(this);
    mProgressBar.setVisibility(View.INVISIBLE);

    mUsername = (EditText)findViewById(R.id.usernameField);
    mPassword = (EditText)findViewById(R.id.passwordField);
    mEmail = (EditText)findViewById(R.id.emailField);

    mSignUpButton = (Button)findViewById(R.id.signupButton);
    mSignUpButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String username = mUsername.getText().toString();
            String password = mPassword.getText().toString();
            String email = mEmail.getText().toString();

            username = username.trim();
            password = password.trim();
            email = email.trim();

            if(username.isEmpty() || password.isEmpty() || email.isEmpty()){
                AlertDialog.Builder builder= new AlertDialog.Builder(SignUpActivity.this);
                builder.setMessage(R.string.signup_error_message)
                        .setTitle(R.string.signup_error_title)
                        .setPositiveButton(android.R.string.ok, null);
                AlertDialog dialog = builder.create();
                dialog.show();
            }else{
                //create the new user!
                if(mProgressBar.getVisibility() == View.INVISIBLE){
                    mProgressBar.setVisibility(View.VISIBLE);
                }else {
                    mProgressBar.setVisibility(View.INVISIBLE);
                }
                ParseUser newUser = new ParseUser();
                newUser.setUsername(username);
                newUser.setPassword(password);
                newUser.setEmail(email);
                newUser.signUpInBackground(new SignUpCallback() {
                    @Override
                    public void done(ParseException e) {
                        mProgressBar.setVisibility(View.INVISIBLE);

                        if(e==null){
                            //Success!

                            Intent intent = new Intent(SignUpActivity.this, MainActivity.class);
                            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
                            startActivity(intent);
                        }else {
                            AlertDialog.Builder builder= new AlertDialog.Builder(SignUpActivity.this);
                            builder.setMessage(e.getMessage())
                                    .setTitle(R.string.signup_error_title)
                                    .setPositiveButton(android.R.string.ok, null);
                            AlertDialog dialog = builder.create();
                            dialog.show();
                        }
                    }
                });

            }
        }
    });

}

@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_sign_up, 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);
}

defaultConfig {
    applicationId "com.andrecolares.ribbit"
    minSdkVersion 14
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}