RecyclerView只再固定宽度/高度显示，超过部分进行截取

while(ScreenUtil.px2dip(itemView.getWidth())<ScreenUtil.px2dip(mTagContainer.getWidth())+24){
    ConstraintLayout.LayoutParams lp = (ConstraintLayout.LayoutParams) mTagContainer.getLayoutParams();   
    lp.width = ScreenUtil.dip2px(ScreenUtil.px2dip(mTagContainer.getWidth())-80);}
这里是80的原因是因为每一个小tag和他的marginleft数值加起来是80

<ConstraintLayout
<LinearLayout    android:id="@+id/tag_container"    
    android:layout_width="380dp"    
    android:layout_height="wrap_content"    
    android:layout_marginLeft="12dp"    
    android:layout_marginTop="20dp"    
    android:orientation="horizontal"    
    app:layout_constraintLeft_toLeftOf="parent"    
    app:layout_constraintTop_toBottomOf="@+id/first_line">    
        <ImageView        
        android:id="@+id/billions_logo"        
        android:layout_width="56dp"        
        android:layout_height="18dp"        
        android:layout_marginRight="4dp"/>    
        <android.support.v7.widget.RecyclerView        
        android:id="@+id/rv_tags"       
        android:layout_width="wrap_content"        
        android:layout_height="match_parent" />
</LinearLayout>
</ConstraintLayout>


<LinearLayout    
    android:orientation="horizontal"    
    xmlns:android="http://schemas.android.com/apk/res/android"    
    android:layout_width="wrap_content"    
    android:layout_height="wrap_content">    
    <ImageView        
        android:layout_marginLeft="8dp"        
        android:layout_width="72dp"        
        android:layout_height="18dp"        
        android:id="@+id/tv_tag_image"        
        />
</LinearLayout>
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