android - 最后一行可扩展 ListView 在 android 中不是完整 View

Question

这里我使用 View ，那里的代码如下所示。

 <LinearLayout
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:orientation="vertical">

                            <TableRow
                                android:id="@+id/tab_stone_info"
                                android:layout_width="match_parent"
                                android:layout_height="30dp"
                                android:layout_marginTop="1dp"
                                android:background="@color/styleBreakTabColor"
                                android:weightSum="9">

                                <TextView
                                    android:id="@+id/stone_Type"
                                    android:layout_width="match_parent"
                                    android:layout_height="match_parent"
                                    android:layout_weight="1"
                                    android:background="@drawable/cell_shape"
                                    android:gravity="center"
                                    android:text="@string/Type"
                                    android:textColor="@color/txtStyleBreakup"
                                    android:textSize="12sp" />

                                <TextView
                                    android:id="@+id/stone_Shape"
                                    android:layout_width="match_parent"
                                    android:layout_height="match_parent"
                                    android:layout_weight="1"
                                    android:background="@drawable/cell_shape"
                                    android:gravity="center"
                                    android:text="@string/Shape"
                                    android:textColor="@color/txtStyleBreakup"
                                    android:textSize="12sp" />

                                <TextView
                                    android:id="@+id/stone_Qlty"
                                    android:layout_width="match_parent"
                                    android:layout_height="match_parent"
                                    android:layout_weight="1"
                                    android:background="@drawable/cell_shape"
                                    android:gravity="center"
                                    android:text="@string/Quality"
                                    android:textColor="@color/txtStyleBreakup"
                                    android:textSize="12sp" />

                                <TextView
                                    android:id="@+id/stone_Grade"
                                    android:layout_width="match_parent"
                                    android:layout_height="match_parent"
                                    android:layout_weight="1"
                                    android:background="@drawable/cell_shape"
                                    android:gravity="center"
                                    android:text="@string/Grade"
                                    android:textColor="@color/txtStyleBreakup"
                                    android:textSize="12sp" />

                                <TextView
                                    android:id="@+id/stone_Qty"
                                    android:layout_width="match_parent"
                                    android:layout_height="match_parent"
                                    android:layout_weight="1"
                                    android:background="@drawable/cell_shape"
                                    android:gravity="center"
                                    android:text="@string/Qty"
                                    android:textColor="@color/txtStyleBreakup"
                                    android:textSize="12sp" />

                                <TextView
                                    android:id="@+id/stone_Wt"
                                    android:layout_width="match_parent"
                                    android:layout_height="match_parent"
                                    android:layout_weight="1"
                                    android:background="@drawable/cell_shape"
                                    android:gravity="center"
                                    android:text="@string/Wt"
                                    android:textColor="@color/txtStyleBreakup"
                                    android:textSize="12sp" />

                                <TextView
                                    android:id="@+id/stone_MMSize"
                                    android:layout_width="match_parent"
                                    android:layout_height="match_parent"
                                    android:layout_weight="1"
                                    android:background="@drawable/cell_shape"
                                    android:gravity="center"
                                    android:text="@string/MMSize"
                                    android:textColor="@color/txtStyleBreakup"
                                    android:textSize="12sp" />

                                <TextView
                                    android:id="@+id/stone_Setting"
                                    android:layout_width="match_parent"
                                    android:layout_height="match_parent"
                                    android:layout_weight="1"
                                    android:background="@drawable/cell_shape"
                                    android:gravity="center"
                                    android:text="@string/Setting"
                                    android:textColor="@color/txtStyleBreakup"
                                    android:textSize="12sp" />

                                <TextView
                                    android:id="@+id/stone_SettMode"
                                    android:layout_width="match_parent"
                                    android:layout_height="match_parent"
                                    android:layout_weight="1"
                                    android:background="@drawable/cell_shape"
                                    android:gravity="center"
                                    android:text="@string/SettingMode"
                                    android:textColor="@color/txtStyleBreakup"
                                    android:textSize="12sp" />

                            </TableRow>

                            <RelativeLayout
                                android:id="@+id/layout_tab_stone_info_value"
                                android:layout_width="match_parent"
                                android:layout_height="match_parent"

                               >

                                <com.mindtech.ExpandableHeightListView
                                    android:id="@+id/listviewstone"
                                    android:layout_width="match_parent"
                                    android:layout_height="wrap_content"
                                    android:divider="#00000000"
                                    android:gravity="center"
                                    android:horizontalSpacing="2dp"
                                    android:isScrollContainer="false"
                                    android:stretchMode="columnWidth"
                                    android:verticalSpacing="20dp"
                                     />
                            </RelativeLayout>
                        </LinearLayout>

我在下面的类中使用 epandablelistview。

public class ExpandableHeightListView extends ListView
{

    boolean expanded = false;

    public ExpandableHeightListView(Context context, AttributeSet attrs,
                                    int defStyle)
    {
        super(context, attrs, defStyle);
    }

    public ExpandableHeightListView(Context context)
    {
        super(context);
    }

    public ExpandableHeightListView(Context context, AttributeSet attrs)
    {
        super(context, attrs);
    }



    public boolean isExpanded()
    {
        return expanded;
    }

    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
    {

//        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
//                MeasureSpec.AT_MOST);

//
//        super.onMeasure(widthMeasureSpec, expandSpec);


//        int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(
//                Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
//        super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom);
//        ViewGroup.LayoutParams params = getLayoutParams();
//        params.height = getMeasuredHeight();


        if (isExpanded())
        {

            int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK,
                    MeasureSpec.AT_MOST);
            super.onMeasure(widthMeasureSpec, expandSpec);

            ViewGroup.LayoutParams params = getLayoutParams();
            params.height = getMeasuredHeight();
        }
        else
        {
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }
    }

    public void setExpanded(boolean expanded)
    {
        this.expanded = expanded;
    }
}

我提到了这个问题，但没有得到正确的答案。 Grid of images inside ScrollView

Gridview height gets cut

主要问题发生在第一行高度不大于第二行或其他行高时。如果所有行内容长度都相同，则没有问题。

Answer 1

看起来您正在获取 ListView 的 LayoutParams，修改高度参数，但您从未调用 setLayoutParams 来告诉 View 使用修改后的高度。试试这个:

if (isExpanded()) {

    int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK,
            MeasureSpec.AT_MOST);
    super.onMeasure(widthMeasureSpec, expandSpec);

    ViewGroup.LayoutParams params = getLayoutParams();
    params.height = getMeasuredHeight();
//Add this line
    setLayoutParams(params);
}

此外，我过去在使用 onMeasure() 方法时遇到过问题，当框架调用该方法时，并非所有内容都会被测量。你可以试试 ViewTreeObserver ，您可以在其中注册一个监听器，以便在布局完整 View 时收到通知，如下所示:

final LinearLayout layout = (LinearLayout) findViewById(R.id.layout_id);
ViewTreeObserver vto;
if (layout != null) {
    vto = layout.getViewTreeObserver();

    vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            layout.getViewTreeObserver().removeOnGlobalLayoutListener(this);
            //Modify your LayoutParams here
        }
    });
}