在安卓系统中运行时设置ListView的高度

Question

如何设置ListView的高度。

XML代码（该代码可正常工作，并将高度固定为200 dip）

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="5dip"
    android:orientation="vertical" >
    <ListView
        android:id="@+id/dialog_ListView"
        android:layout_width="wrap_content"
        android:layout_height="200dip"
        android:padding="5dip"
        android:layout_weight="1"
        android:dividerHeight="5dip"
        android:divider="@android:color/transparent" />        
</LinearLayout>

Android代码（此代码宽高不固定）

convertView = mInflater.inflate( R.layout.dialog_page, null );
convertView.setLayoutParams( new ListView.LayoutParams( 200, 300) );

Android代码（我收到了错误消息的代码）

convertView = mInflater.inflate( R.layout.lock_file_page, parent );
convertView.setLayoutParams( new ListView.LayoutParams( 200, 300) );

错误消息

java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView

如何在运行时设置宽度和高度。

提前感谢。

- Sekar

Answer 1

试试这段代码...

 LayoutParams lp = (LayoutParams) mListView.getLayoutParams();
 lp.height = 300;
 mListView.setLayoutParams(lp);

- Mehul Santoki

---

LinearLayout.LayoutParams lp = (LayoutParams) mListview.getLayoutParams(); 将此添加以使其正常工作。 - Sekar

抱歉，我不了解iOS。 - Mehul Santoki

Answer 2

public static boolean setListViewHeightBasedOnItems(ListView listView) {

    ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter != null) {

        int numberOfItems = listAdapter.getCount();

        // Get total height of all items.
        int totalItemsHeight = 0;
        for (int itemPos = 0; itemPos < numberOfItems; itemPos++) {
            View item = listAdapter.getView(itemPos, null, listView);
            item.measure(0, 0);
            totalItemsHeight += item.getMeasuredHeight();
        }

        // Get total height of all item dividers.
        int totalDividersHeight = listView.getDividerHeight() *
                (numberOfItems - 1);

        // Set list height.
        ViewGroup.LayoutParams params = listView.getLayoutParams();
        params.height = totalItemsHeight + totalDividersHeight;
        listView.setLayoutParams(params);
        listView.requestLayout();

        return true;

    } else {
        return false;
    }

}

- Andres Marin

---

提供一个简短的描述，说明你做了什么以及为什么这样做，同时附上你的代码会很好。 - Werner Henze

Answer 3

首先删除LayoutParams的导入文件，然后使用以下代码来设置LayoutParams。

LinearLayout.LayoutParams params=new LinearLayout.LayoutParams(200, 300);
convertView.setLayoutParams(params);

- Dipak Keshariya

---

这段代码不起作用。我收到了相同的错误信息java.lang.ClassCastException：android.widget.LinearLayout$LayoutParams无法转换为android.widget.AbsListView$LayoutParams。 - Sekar

@user1474868请发布您的完整代码和导入语句，这样我才能给您提供适当的解决方案。 - Dipak Keshariya

Answer 4

尝试一下

public void setDynamicHeight(ListView listView) {
ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter == null) {
    return;
    }
int totalHeight = listView.getPaddingTop() + listView.getPaddingBottom();
int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(), MeasureSpec.AT_MOST);
for (int i = 0; i < listAdapter.getCount(); i++) {
    View listItem = listAdapter.getView(i, null, listView);

    if(listItem != null){
        listItem.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT));
        listItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
        totalHeight += listItem.getMeasuredHeight();

    }
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
listView.setLayoutParams(params);
listView.requestLayout();}

- Zahra.HY