Android:如何测量ListView的总高度

Question

我需要测量ListView的总高度,但似乎我总是得到错误的值.我正在使用此代码:

public static void setListViewHeightBasedOnChildren(ListView listView) {
    ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter == null) {
        return;
    }

    int totalHeight = 0;
    int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(),
            MeasureSpec.AT_MOST);
    Log.w("DESIRED WIDTH", String.valueOf(listAdapter.getCount()));
    for (int i = 0; i < listAdapter.getCount(); i++) {
        View listItem = listAdapter.getView(i, null, listView);
        listItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
        totalHeight += listItem.getMeasuredHeight();
        Log.w("HEIGHT"+i, String.valueOf(totalHeight));
    }

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

问题是我收到的身高比我应该收到的高.每个列表项的测量方式都不同,所有项都具有相同的高度,所以绝对不应该这样做.每个元素的高度至少是它的实际高度的两倍.

先感谢您.

EDIT1:

我有两个ListView,它们都有6-7 EditText字段的项目.如果用户想要在EditText中写入/删除值,我会显示/隐藏ListView.一切都很好,除非我想显示列表,它需要大量的空间,因为方法计算ListView需要大量的空间.因为我在ListView下面有很多空的空间.就像需要三倍空的空间.

Answer 1

最后我做到了!这是测量ListView高度并将ListView设置为完整大小的工作代码:

public static void getTotalHeightofListView(ListView listView) {

    ListAdapter mAdapter = listView.getAdapter();

    int totalHeight = 0;

    for (int i = 0; i < mAdapter.getCount(); i++) {
        View mView = mAdapter.getView(i, null, listView);

        mView.measure(
                MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),

                MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));

        totalHeight += mView.getMeasuredHeight();
        Log.w("HEIGHT" + i, String.valueOf(totalHeight));

    }

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

}