目前使用约束布局创建对话框并将视图定位如下，但使用0dp的视图高度无效。
这里recyclerview不可见。
<?xml version="1.0" encoding="utf-8"?>
<layout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:bind="http://schemas.android.com/tools">
<data>
<variable
name="passengerSeatViewModel"
type="PassengerSeatViewModel" />
<variable
name="seatSelectionViewModel"
type="SeatSelectionViewModel" />
</data>
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorWhite">
<android.support.constraint.Guideline
android:id="@+id/guideline_left"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_begin="@dimen/_20dp" />
<android.support.constraint.Guideline
android:id="@+id/guideline_right"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_end="@dimen/_20dp" />
<include
android:id="@+id/header"
layout="@layout/dialog_header"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintLeft_toRightOf="@+id/guideline_left"
app:layout_constraintRight_toLeftOf="@+id/guideline_right"
bind:header="@{@string/text_seat_selected_for}"
bind:onCancelClick="@{passengerSeatViewModel}" />
<android.support.v7.widget.AppCompatTextView
android:id="@+id/tv_segment"
style="@style/TextStyle_L_Black"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/_5dp"
android:layout_marginLeft="@dimen/_5dp"
android:drawableEnd="@drawable/green_filled_tick"
android:drawableRight="@drawable/green_filled_tick"
android:drawablePadding="@dimen/_5dp"
android:gravity="center"
android:text="@{seatSelectionViewModel.getSelectedSegment()}"
app:layout_constraintLeft_toRightOf="@+id/guideline_left"
app:layout_constraintTop_toBottomOf="@+id/header" />
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_passengers"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="@dimen/_3dp"
app:layout_constraintBottom_toTopOf="@+id/barrier_select_seats"
app:layout_constraintLeft_toLeftOf="@+id/guideline_left"
app:layout_constraintRight_toRightOf="@+id/guideline_right"
app:layout_constraintTop_toBottomOf="@+id/tv_segment"
bind:data="@{seatSelectionViewModel.passengerAdapterViewModel}"
bind:passengerViewModel="@{passengerSeatViewModel}" />
<android.support.constraint.Group
android:id="@+id/group_copy"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"
app:constraint_referenced_ids="btn_copy_seat,tv_or,seperator_left,seperator_right" />
<android.support.v7.widget.AppCompatButton
android:id="@+id/btn_copy_seat"
style="@style/AppBtnStyle_Disable"
android:layout_width="0dp"
android:text="@string/text_copy_same_seat"
app:layout_constraintLeft_toLeftOf="@+id/guideline_left"
app:layout_constraintRight_toRightOf="@+id/guideline_right"
app:layout_constraintTop_toBottomOf="@+id/rv_passengers" />
<android.support.v7.widget.AppCompatTextView
android:id="@+id/tv_or"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/_20dp"
android:paddingLeft="@dimen/_23dp"
android:paddingRight="@dimen/_23dp"
android:text="@string/or"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/btn_copy_seat" />
<View
android:id="@+id/seperator_left"
android:layout_width="0dp"
android:layout_height="@dimen/_1dp"
android:background="@color/colorDividerSearch"
app:layout_constraintBottom_toBottomOf="@+id/tv_or"
app:layout_constraintLeft_toRightOf="@+id/guideline_left"
app:layout_constraintRight_toLeftOf="@+id/tv_or"
app:layout_constraintTop_toTopOf="@+id/tv_or" />
<View
android:id="@+id/seperator_right"
android:layout_width="0dp"
android:layout_height="@dimen/_1dp"
android:background="@color/colorDividerSearch"
app:layout_constraintBottom_toBottomOf="@+id/tv_or"
app:layout_constraintLeft_toRightOf="@+id/tv_or"
app:layout_constraintRight_toLeftOf="@+id/guideline_right"
app:layout_constraintTop_toTopOf="@+id/tv_or" />
<android.support.constraint.Barrier
android:id="@+id/barrier_seats"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:barrierDirection="bottom"
app:constraint_referenced_ids="tv_or,rv_passengers" />
<android.support.constraint.Barrier
android:id="@+id/barrier_select_seats"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:barrierDirection="top"
app:constraint_referenced_ids="tv_or,btn_select_seat" />
<android.support.v7.widget.AppCompatButton
android:id="@+id/btn_select_seat"
style="@style/AppBtnStyleBlueBorderless"
android:layout_width="0dp"
android:layout_marginTop="@dimen/_16dp"
android:text="@string/text_select_seat_for"
app:layout_constraintBottom_toTopOf="@+id/footer_space"
app:layout_constraintLeft_toLeftOf="@+id/guideline_left"
app:layout_constraintRight_toRightOf="@+id/guideline_right" />
<Space
android:id="@+id/footer_space"
android:layout_width="0dp"
android:layout_height="@dimen/_22dp"
app:layout_constraintBottom_toBottomOf="parent" />
</android.support.constraint.ConstraintLayout>
</layout>
注意：
1) 需要修复页脚中的按钮以及其上方的其他内容。上方部分将具有包裹内容的高度。
2) 底部表格内的内容无法滚动。