<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/rv_topbar" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/pickerview_bg_topbar"> <Button android:id="@+id/btnCancel" android:layout_width="wrap_content" android:layout_height="match_parent" android:background="@android:color/transparent" android:gravity="left|center_vertical" android:paddingLeft="@dimen/pickerview_topbar_padding" android:text="@string/pickerview_cancel" android:textColor="@drawable/selector_pickerview_btn" android:textSize="@dimen/pickerview_topbar_btn_textsize" /> <TextView android:id="@+id/tvTitle" android:layout_width="match_parent" android:gravity="center" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_toLeftOf="@+id/btnSubmit" android:layout_toRightOf="@+id/btnCancel" android:textColor="@color/pickerview_topbar_title" android:textSize="@dimen/pickerview_topbar_title_textsize" /> <Button android:id="@id/btnSubmit" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_alignParentRight="true" android:background="@android:color/transparent" android:gravity="right|center_vertical" android:paddingRight="@dimen/pickerview_topbar_padding" android:text="@string/pickerview_submit" android:textColor="@drawable/selector_pickerview_btn" android:textSize="@dimen/pickerview_topbar_btn_textsize" /> </RelativeLayout>