在此先感谢您的时间。我正在使用 RelativeLayout 来显示我的列表项。我有图像按钮左对齐父和图像右侧的一堆 TextViews。只有始终可见的文本视图是ordersummaryrow.itemtitle和ordersummaryrow.itemprice。我正在根据 CustomAdapter 中的条件设置其余文本视图的可见性。例如，如果提供了特殊请求，那么它应该显示在底部，如果提供了项目选项，那么在请求的顶部，如果提供了额外的项目，那么它应该显示在项目选项的顶部，最后是主项目。另外，如果没有其他文本视图可见，我希望 Main Item Title 居中对齐，如此处所述. 但这不是我通过这种行布局得到的。如果提供了特殊要求，那么这就是我看到的唯一文本视图。它甚至没有显示主要项目标题。我确信它是可行的，我一定错过了一些东西。感谢你的帮助。
ordersummaryrow.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/listitem_background"
>
<LinearLayout
android:id="@+id/ordersummaryrow.buttons"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_marginRight="5dp">
<ImageView
android:id="@+id/ordersummaryrow.delete"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/orderdelete"
android:layout_weight="1" />
<ImageView
android:id="@+id/ordersummaryrow.update"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/orderedit"
android:layout_weight="1" />
</LinearLayout>
<TextView
android:id="@+id/ordersummaryrow.splrequest"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/custom_black_color"
android:layout_toRightOf="@id/ordersummaryrow.buttons"
android:layout_alignParentBottom="true" />
<TextView
android:id="@+id/ordersummaryrow.itemoption"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/custom_black_color"
android:text="Item Option"
android:layout_toRightOf="@id/ordersummaryrow.buttons"
android:layout_above="@id/ordersummaryrow.splrequest"
android:layout_alignWithParentIfMissing="true"
/>
<TextView
android:id="@+id/ordersummaryrow.extraitem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/custom_black_color"
android:text="Extra Item Title"
android:layout_toRightOf="@id/ordersummaryrow.buttons"
android:layout_above="@id/ordersummaryrow.itemoption"
android:layout_alignWithParentIfMissing="true"
/>
<TextView
android:id="@+id/ordersummaryrow.extraitemprice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/custom_black_color"
android:text="$"
android:layout_above="@id/ordersummaryrow.itemoption"
android:layout_alignParentRight="true"
android:layout_alignWithParentIfMissing="true"
/>
<TextView
android:id="@+id/ordersummaryrow.itemtitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/custom_black_color"
android:layout_above="@id/ordersummaryrow.extraitem"
android:layout_toRightOf="@id/ordersummaryrow.buttons"
android:layout_alignWithParentIfMissing="true"
android:gravity="center_vertical"
android:text="Item Title" />
<TextView
android:id="@+id/ordersummaryrow.itemprice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/custom_black_color"
android:text="$$"
android:layout_alignTop="@id/ordersummaryrow.itemtitle"
android:layout_alignParentRight="true"
/>
</RelativeLayout>
这是自定义适配器中的 GetView()
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
View row = convertView;
if(row == null)
{
LayoutInflater vi = (LayoutInflater)m_context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
try{
row = vi.inflate(R.layout.ordersummaryrow, null);
}
catch(Exception e)
{
Log.i("SUBMENU", e.getMessage());
}
}
OrderSummaryRowViewHolder holder = (OrderSummaryRowViewHolder)row.getTag();
if(holder == null)
{
holder = new OrderSummaryRowViewHolder(row);
row.setTag(holder);
}
OrderedItem orderItem = m_orderedItem.get(position);
if (orderItem != null)
{
if(m_updateListener != null)
holder.m_updateBtn.setOnClickListener(m_updateListener);
else
Log.i("OrderSummaryRowAdapter", "Update Listener is not registered");
if(m_deleteListener != null)
holder.m_deleteBtn.setOnClickListener(m_deleteListener);
else
Log.i("OrderSummaryRowAdapter", "Delete Listener is not registered");
holder.m_titleTxt.setText(orderItem.get_orderItem().getName());
holder.m_priceTxt.setText("$" + (String.valueOf(orderItem.get_orderItem().getPrice())));
if(orderItem.get_extraItems().size() == 0) //No extra items added so hide corresponding text box
{
holder.m_extraItemTxt.setVisibility(View.GONE);
holder.m_extraItemPriceTxt.setVisibility(View.GONE);
}
else
{
StringBuilder sbItemName = new StringBuilder();
StringBuilder sbItemPrice = new StringBuilder();
for (SubMenu extraItem : orderItem.get_extraItems())
{
sbItemName.append(extraItem.getName());
sbItemName.append("\n");
sbItemPrice.append("$" + (String.valueOf(extraItem.getPrice())));
sbItemPrice.append("\n");
}
holder.m_extraItemTxt.setText(sbItemName);
holder.m_extraItemPriceTxt.setText(sbItemPrice);
}
if(orderItem.get_options().size() == 0)
holder.m_optionTxt.setVisibility(View.GONE);
else
{
StringBuilder sbOption = new StringBuilder();
for (ItemOption option : orderItem.get_options())
{
sbOption.append(option.getName());
sbOption.append("\n");
}
holder.m_optionTxt.setText(sbOption);
}
if(orderItem.getspecialRequest() != null &&
orderItem.getspecialRequest().length() > 0)
holder.m_splRequestTxt.setText(orderItem.getspecialRequest());
else
holder.m_splRequestTxt.setVisibility(View.GONE);
}
return row;
}