为什么在扩展视图后使用requestLayout（）甚至在ConstrainLayout中相互重叠textViews？
当用户点击项目底部变得可见时，底部是不可见的
视图未展开时的描述行（第3行）仅显示1行，
随着它变得扩大它应该显示尽可能多的3-4行，
但是当描述占据3-4行时，如果底部重叠，则为正文
我调用requestLayout但没有改变
if (holder.binding instanceof StoreOfferItemBinding) {
final boolean isExpanded = position == expandedPosition;
((ItemBinding) (holder.binding)).offerDetail.setVisibility(isExpanded ? View.VISIBLE : View.GONE);
if (isExpanded) {
holder.itemView.requestLayout();
}
((ItemBinding) (holder.binding)).offerDescription.setMaxLines(isExpanded ? 4 : 1);
holder.itemView.setActivated(isExpanded);
holder.itemView.setOnClickListener(view -> {
expandedPosition = isExpanded ? -1 : holder.getAdapterPosition();
notifyItemChanged(holder.getAdapterPosition());
});
if(isExpanded) {
holder.itemView.requestLayout();
}
}
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:background="?attr/selectableItemBackground">
<TextView
android:id="@+id/offer_title"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="@{offer.productName()}"
app:layout_constraintEnd_toStartOf="@+id/offer_add_to_user"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintLeft_toRightOf="@+id/offer_image"
app:layout_constraintRight_toLeftOf="@+id/offer_add_to_user"
app:layout_constraintStart_toEndOf="@+id/offer_image"
app:layout_constraintTop_toTopOf="parent"
tools:text="Juice Valfria" />
<TextView
android:id="@+id/offer_price"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="@{offer.offerCondition()}"
app:layout_constraintEnd_toStartOf="@+id/offer_add_to_user"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintRight_toLeftOf="@+id/offer_add_to_user"
app:layout_constraintStart_toEndOf="@+id/offer_image"
app:layout_constraintTop_toBottomOf="@+id/offer_title"
tools:text="34,50 kr/kg" />
<TextView
android:id="@+id/offer_description"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:ellipsize="end"
android:lines="1"
android:text="@{offer.sizeOrQuantity()}"
app:layout_constraintEnd_toStartOf="@+id/offer_add_to_user"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintLeft_toRightOf="@+id/offer_image"
app:layout_constraintRight_toLeftOf="@+id/offer_add_to_user"
app:layout_constraintTop_toBottomOf="@+id/offer_price"
tools:text="Description" />
<ImageView
android:id="@+id/offer_image"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_marginBottom="8dp"
android:layout_marginStart="16dp"
android:layout_marginTop="24dp"
app:imageUri="@{offer.imageUrl()}"
app:layout_constraintBottom_toTopOf="@+id/offer_detail"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<CheckBox
android:id="@+id/offer_add_to_user"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginRight="16dp"
android:layout_marginTop="8dp"
android:button="@drawable/checkbox_background"
app:layout_constraintBottom_toTopOf="@+id/offer_detail"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.constraint.ConstraintLayout
android:id="@+id/offer_detail"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/offer_description">
<TextView
android:id="@+id/price_comparison"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:text="@{offer.priceComparison()}"
app:layout_constraintBottom_toTopOf="@+id/disclaimer"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Price Comparison" />
<TextView
android:id="@+id/disclaimer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:text="@{offer.disclaimer()}"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/price_comparison"
tools:text="Disclaimer" />
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
1 个答案:
答案 0 :(得分：0)
<android.support.constraint.ConstraintLayout
android:id="@+id/root_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:background="?attr/selectableItemBackground">
<TextView
android:id="@+id/offer_title"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toTopOf="@+id/offer_price"
app:layout_constraintEnd_toStartOf="@+id/offer_add_to_user"
app:layout_constraintStart_toEndOf="@+id/offer_image"
app:layout_constraintTop_toTopOf="parent"
/>
<TextView
android:id="@+id/offer_price"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:textColor="@color/ica_red"
app:layout_constraintBottom_toTopOf="@+id/price_comparison"
app:layout_constraintEnd_toStartOf="@+id/offer_add_to_user"
app:layout_constraintStart_toEndOf="@+id/offer_image"
app:layout_constraintTop_toBottomOf="@+id/offer_title"
tools:text="34,50 kr/kg" />
<TextView
android:id="@+id/price_comparison"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
app:layout_constraintBottom_toTopOf="@+id/offer_detail"
app:layout_constraintEnd_toStartOf="@+id/offer_add_to_user"
app:layout_constraintStart_toEndOf="@+id/offer_image"
app:layout_constraintTop_toBottomOf="@+id/offer_price"
tools:text="Price Comparison" />
<ImageView
android:id="@+id/offer_image"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="ContentDescription" />
<CheckBox
android:id="@+id/offer_add_to_user"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="16dp"
android:layout_marginTop="8dp"
android:button="@drawable/checkbox_background"
app:layout_constraintBottom_toTopOf="@+id/offer_detail"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.constraint.ConstraintLayout
android:id="@+id/offer_detail"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginStart="16dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/price_comparison">
<TextView
android:id="@+id/offer_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="0dp"
android:text="@{offer.sizeOrQuantity()}"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="200g, ICA Eko" />
<TextView
android:id="@+id/disclaimer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginStart="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/offer_description"
tools:text="Disclaimer" />
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
相关问题
最新问题
- 我写了这段代码，但我无法理解我的错误
- 我无法从一个代码实例的列表中删除 None 值，但我可以在另一个实例中。为什么它适用于一个细分市场而不适用于另一个细分市场？
- 是否有可能使 loadstring 不可能等于打印？卢阿
- java中的random.expovariate()
- Appscript 通过会议在 Google 日历中发送电子邮件和创建活动
- 为什么我的 Onclick 箭头功能在 React 中不起作用？
- 在此代码中是否有使用“this”的替代方法？
- 在 SQL Server 和 PostgreSQL 上查询，我如何从第一个表获得第二个表的可视化
- 每千个数字得到
- 更新了城市边界 KML 文件的来源？