Quelle  activity_webrtc_debug.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/parent_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="?android:attr/colorBackground"
    android:orientation="vertical">

    <include layout="@layout/toolbar_view" />

    <LinearLayout
        android:id="@+id/content_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <TextView
            android:id="@+id/webrtc_debug_intro"
            style="@style/Threema.TextAppearance.BodyLarge"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginHorizontal="@dimen/grid_unit_x3"
            android:layout_marginVertical="@dimen/grid_unit_x1"
            android:text="@string/voip_webrtc_debug_intro" />

        <com.google.android.material.button.MaterialButton
            android:id="@+id/webrtc_debug_start"
            style="@style/Threema.MaterialButton.Action"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginHorizontal="@dimen/grid_unit_x2"
            android:text="@string/voip_webrtc_debug_start" />

        <ListView
            android:id="@+id/webrtc_debug_candidates"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:clipToPadding="false"
            android:paddingHorizontal="@dimen/grid_unit_x1" />

        <com.google.android.material.progressindicator.CircularProgressIndicator
            android:id="@+id/webrtc_debug_loading"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:indeterminate="true"
            android:visibility="gone" />

        <TextView
            android:id="@+id/webrtc_debug_done"
            style="@style/Threema.TextAppearance.BodyLarge"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginHorizontal="@dimen/grid_unit_x3"
            android:layout_marginVertical="@dimen/grid_unit_x1"
            android:text="@string/voip_webrtc_debug_done"
            android:visibility="gone"
            tools:visibility="visible" />

        <LinearLayout
            android:id="@+id/webrtc_debug_footer_buttons"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginHorizontal="@dimen/grid_unit_x2"
            android:layout_marginBottom="@dimen/grid_unit_x1"
            android:orientation="horizontal"
            android:visibility="gone"
            tools:visibility="visible">

            <com.google.android.material.button.MaterialButton
                android:id="@+id/webrtc_debug_copy_button"
                style="@style/Threema.MaterialButton.Action"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="left"
                android:layout_marginRight="@dimen/grid_unit_x1"
                android:layout_weight="1"
                android:maxLines="3"
                android:singleLine="false"
                android:text="@string/voip_webrtc_debug_copy_clipboard" />

            <com.google.android.material.button.MaterialButton
                android:id="@+id/webrtc_debug_send_button"
                style="@style/Threema.MaterialButton.Action"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right"
                android:layout_marginLeft="@dimen/grid_unit_x2"
                android:layout_weight="1"
                android:maxLines="3"
                android:singleLine="false"
                android:text="@string/send_to_support" />

        </LinearLayout>

    </LinearLayout>

</LinearLayout>