ReaderforSelfoss/app/src/main/res/layout/activity_login.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:gravity="center_horizontal"
    android:orientation="vertical"
    tools:context="apps.amine.bou.readerforselfoss.LoginActivity">
    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:theme="@style/ToolBarStyle" />

    </android.support.design.widget.AppBarLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin">
        <!-- Login progress -->
        <ProgressBar
            android:id="@+id/login_progress"
            style="?android:attr/progressBarStyleLarge"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="8dp"
            android:visibility="gone"/>

        <ScrollView
            android:id="@+id/login_form"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <android.support.design.widget.TextInputLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:id="@+id/urlLayout"
                    >

                    <EditText
                        android:id="@+id/url"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:hint="@string/prompt_url"
                        android:imeOptions="actionUnspecified"
                        android:inputType="textUri"
                        android:maxLines="1"
                        />

                </android.support.design.widget.TextInputLayout>

                <Switch
                    android:text="@string/withLoginSwitch"
                    android:layout_width="match_parent"
                    android:layout_height="0dp"
                    android:id="@+id/withLogin"
                    android:layout_weight="1"/>

                <android.support.design.widget.TextInputLayout
                    android:id="@+id/loginLayout"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:visibility="gone">

                    <AutoCompleteTextView
                        android:id="@+id/login"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:hint="@string/prompt_login"
                        android:inputType="text"
                        android:maxLines="1"
                        />

                </android.support.design.widget.TextInputLayout>

                <android.support.design.widget.TextInputLayout
                    android:id="@+id/passwordLayout"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:visibility="gone">

                    <EditText
                        android:id="@+id/password"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:hint="@string/prompt_password"
                        android:inputType="textPassword"
                        android:maxLines="1"
                        />

                </android.support.design.widget.TextInputLayout>

                <Switch
                    android:id="@+id/withHttpLogin"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="@string/withHttpLoginSwitch" />

                <android.support.design.widget.TextInputLayout
                    android:id="@+id/httpLoginInput"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:visibility="gone">

                    <EditText
                        android:id="@+id/httpLogin"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:hint="@string/prompt_http_login" />
                </android.support.design.widget.TextInputLayout>

                <android.support.design.widget.TextInputLayout
                    android:id="@+id/httpPasswordInput"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:visibility="gone">

                    <EditText
                        android:id="@+id/httpPassword"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:inputType="textPassword"
                        android:hint="@string/prompt_http_password" />
                </android.support.design.widget.TextInputLayout>

                <Switch
                    android:id="@+id/withSelfhostedCert"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/self_hosted_cert_switch" />

                <TextView
                    android:id="@+id/warningText"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/self_signed_cert_warning"
                    android:textAppearance="@style/TextAppearance.AppCompat.Medium"
                    android:visibility="gone" />

                <Button
                    android:id="@+id/email_sign_in_button"
                    style="?android:textAppearanceSmall"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginBottom="16dp"
                    android:layout_marginTop="16dp"
                    android:text="@string/action_sign_in"
                    android:textStyle="bold" />

            </LinearLayout>
        </ScrollView>
    </LinearLayout>

</LinearLayout>