我正在考虑在约束布局中将一个relativelayout放在另一个下面，而在底部放置另一个按钮容器覆盖容器。我该怎么办呢？ 这是代码：
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:id="@+id/activeSpeakerContainer"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/groupCallerList"
app:layout_constraintTop_toBottomOf="@+id/callStatusContainer"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent">
<FrameLayout
android:id="@+id/activeSpeakerVideo"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/black" />
<ImageView
android:id="@+id/activeSpeakerImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="48dp"
android:src="@drawable/call_default_profile" />
<ImageView
android:id="@+id/beta_calling_watermark"
android:layout_width="130dp"
android:layout_height="28dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginBottom="36dp"
android:layout_marginLeft="16dp"
android:src="@drawable/ic_beta_calling_watermark_blue" />
<TextView
android:id="@+id/activeSpeakerName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#AA555555"
android:ellipsize="end"
android:gravity="center_horizontal|bottom"
android:lines="1"
android:textSize="16sp"
tools:text="" />
</RelativeLayout>
<RelativeLayout
android:id="@+id/ShareContainer"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/callButtonContainer"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<FrameLayout
android:id="@+id/ShareVideo"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/black"/>
<ImageButton
android:id="@+id/ShareToggle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="36dp"
android:layout_marginLeft="16dp"
android:background="@android:color/transparent"
android:src="@drawable/ic_video_cam_switch" />
</RelativeLayout>
<RelativeLayout
android:id="@+id/callStatusContainer"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="#AA555555"
android:padding="8dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="@+id/callNameText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:ellipsize="end"
android:lines="1"
android:textSize="14sp"
tools:text="" />
<TextView
android:id="@+id/callParticipantCountText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toEndOf="@+id/callNameText"
android:layout_toRightOf="@+id/callNameText"
android:ellipsize="end"
android:lines="1"
android:paddingLeft="18dp"
android:paddingRight="18dp"
android:textSize="14sp" />
<TextView
android:id="@+id/callDurationText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:layout_toEndOf="@id/callParticipantCountText"
android:layout_toLeftOf="@+id/callButtonVideoRotate"
android:layout_toRightOf="@id/callParticipantCountText"
android:layout_toStartOf="@id/callButtonVideoRotate"
android:lines="1"
android:textSize="14sp"
tools:text="03:16" />
<ImageButton
android:id="@+id/callButtonVideoRotate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/callDurationText"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:background="@android:color/transparent"
android:src="@drawable/ic_video_cam_switch" />
</RelativeLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/groupCallerList"
android:layout_width="0dp"
android:layout_height="0dp"
android:visibility="invisible"
app:layout_constraintBottom_toTopOf="@+id/callButtonContainer"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/activeSpeakerContainer">
</android.support.v7.widget.RecyclerView>
<RelativeLayout
android:id="@+id/callProgressContainer"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="@+id/groupCallerList"
app:layout_constraintLeft_toLeftOf="@+id/groupCallerList"
app:layout_constraintRight_toRightOf="@+id/groupCallerList"
app:layout_constraintTop_toTopOf="@+id/groupCallerList">
<TextView
android:id="@+id/callProgressName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="8dp"
android:gravity="center_horizontal"
android:textSize="20sp"
tools:text="Caller Name" />
<TextView
android:id="@+id/callProgressText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/callProgressName"
android:layout_centerHorizontal="true"
android:layout_marginTop="8dp"
android:gravity="center_horizontal"
android:text="@string/call_status_connecting"
android:textSize="16sp" />
</RelativeLayout>
<include
android:id="@+id/callButtonContainer"
layout="@layout/layout_call_button_bar_1_row"
android:layout_width="0dp"
android:layout_height="48dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" />
<android.support.constraint.ConstraintLayout
android:id="@+id/callButtonContainerUnavailable"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="@+id/callButtonContainer"
app:layout_constraintLeft_toLeftOf="@+id/callButtonContainer"
app:layout_constraintRight_toRightOf="@+id/callButtonContainer"
app:layout_constraintTop_toTopOf="@+id/callButtonContainer"
tools:visibility="visible">
<Button
android:id="@+id/callButtonCancel"
style="@style/CallButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableTop="@drawable/btn_call_end"
android:text="@string/dialog_button_cancel"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/callButtonRetry"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/callButtonRetry"
style="@style/CallButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableTop="@drawable/btn_call_retry"
android:text="@string/button_try_again"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/callButtonCancel"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
任何线索如何去做？我实际上想将callstatuscontainer放在share或activespeaker容器之上。我试过app：layout_constraintTop_toBottomOf =＆＃34; @ + id / callStatusContainer＆＃34; 在有源扬声器容器，但没有运气，任何想法？