Quelle  dialog_safe_advanced.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/scroll_container"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/transparent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:paddingLeft="24dp"
        android:paddingRight="24dp">

        <TextView
            android:id="@+id/safe_enable_explain"
            style="@style/Threema.MaterialAlertDialog.Body.Style"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:text="@string/flavored__safe_configure_server_explain" />

        <com.google.android.material.materialswitch.MaterialSwitch
            android:id="@+id/safe_switch_server"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:checked="true"
            android:enabled="true"
            android:text="@string/safe_use_default_server"
            android:textAppearance="@style/Threema.TextAppearance.Dialog.Body" />

        <LinearLayout
            android:id="@+id/safe_server_container"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:orientation="vertical"
            android:visibility="gone"
            tools:visibility="visible">

            <com.google.android.material.textfield.TextInputLayout
                android:id="@+id/safe_server"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:hintAnimationEnabled="false"
                app:hintEnabled="false">

                <ch.threema.app.ui.PrefixEditText
                    android:id="@+id/safe_edit_server"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:hint="@string/safe_enter_server_address_explain"
                    android:imeOptions="actionDone"
                    android:inputType="textWebEditText"
                    android:singleLine="true"
                    android:tag="https://">

                    <requestFocus />
                </ch.threema.app.ui.PrefixEditText>

            </com.google.android.material.textfield.TextInputLayout>

            <TextView
                android:id="@+id/safe_credentials_title"
                style="@style/Threema.MaterialAlertDialog.Body.Style"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:text="@string/safe_configure_server_credentials_title"
                android:textColor="?attr/colorOnSurface" />

            <com.google.android.material.textfield.TextInputLayout
                android:id="@+id/safe_username"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:hintAnimationEnabled="false"
                app:hintEnabled="true">

                <ch.threema.app.ui.ThreemaTextInputEditText
                    android:id="@+id/safe_edit_username"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:hint="@string/username_hint"
                    android:imeOptions="actionNext"
                    android:inputType="textWebEditText"
                    android:nextFocusDown="@id/safe_edit_server_password"
                    android:singleLine="true">

                </ch.threema.app.ui.ThreemaTextInputEditText>

            </com.google.android.material.textfield.TextInputLayout>

            <com.google.android.material.textfield.TextInputLayout
                android:id="@+id/safe_server_password"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:hintAnimationEnabled="false"
                app:hintEnabled="true"
                app:passwordToggleEnabled="true">

                <ch.threema.app.ui.ThreemaTextInputEditText
                    android:id="@+id/safe_edit_server_password"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:hint="@string/password_hint"
                    android:imeOptions="actionDone"
                    android:inputType="textWebPassword"
                    android:singleLine="true"
                    android:tag="https://">

                </ch.threema.app.ui.ThreemaTextInputEditText>

            </com.google.android.material.textfield.TextInputLayout>

        </LinearLayout>

    </LinearLayout>
</ScrollView>