mDialog = new Dialog(this, R.style.chooseUserDialogTheme);mDialog.setTitle(R.string.choose_user);View rootView = LayoutInflater.from(this).inflate(    R.layout.view_simple_choose_user, null);mDialog.setContentView(rootView);mLinearLayoutUserList = (LinearLayout) rootView    .findViewById(R.id.linearLayout_user_list);mDialog.show();mIsUserListShown = true;DialogInterface.OnDismissListener listener = new DialogInterface.OnDismissListener() {  @Override  public void onDismiss(DialogInterface dialog) {    timer.cancel();    mIsUserListShown = false;  }};mDialog.setOnDismissListener(listener);

<style name="chooseUserDialogTheme" parent="@android:style/Theme.Dialog">    <item name="android:background">@android:color/transparent</item>    <item name="android:textAppearance">@style/textAppearanceL</item>    <item name="android:textColor">@android:color/white</item>    <item name="android:windowBackground">@drawable/bg_choose_user_simple</item>    <item name="android:popupBackground">@drawable/bg_main_activity_top_bar</item></style>

<?xml version="1.0" encoding="utf-8"?><HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:background="@drawable/bg_main_activity_top_bar"  android:orientation="vertical" >  <LinearLayout    android:id="@+id/linearLayout_user_list"    android:layout_width="0dp"    android:layout_height="wrap_content"    android:orientation="horizontal" >  </LinearLayout></HorizontalScrollView>