Question

我有一个ListView，我列表中的每一行都是RelativeLayout，ImageView和TextView。我想在滚动列表时动态更改RelativeLayout的尺寸，这样第一行和最后一行宽度等于屏幕宽度，中间行宽度是屏幕宽度的一半。我可以使用以下代码动态更改TextView的文本大小：

@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {

    //Calculate height and width based on visible count items and position

    final int viewHeight = height // calculated based on row position;
    final int viewWidth = width //  calculated based on row position;

    for (int i = 0; i < visibleItemCount; i++) {

        final RelativeLayout layout = (RelativeLayout) listView.getChildAt(i);
        final ImageView imageView = (ImageView) layout.findViewById(R.id.icon);
        final TextView time = (TextView) layout.findViewById(R.id.time);

        time.post(new Runnable() {
            @Override
            public void run() {
               time.setTextSize(viewHeight);
            }
        });
   }
}

但我想在滚动时动态更改整个行布局的尺寸。请检查下面的代码。任何帮助表示赞赏。

@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {

    //Calculate height and width based on visible count items and position

    final int viewHeight = height // calculated based on row position;
    final int viewWidth = width //  calculated based on row position;

    for (int i = 0; i < visibleItemCount; i++) {
        final RelativeLayout layout = (RelativeLayout) listView.getChildAt(i);
        setLayoutDimensions(layout,viewHeight, viewWidth);
    }
}

private void setLayoutDimensions(final RelativeLayout layout, final int height, final int width){
    RelativeLayout.LayoutParams adaptLayout = new RelativeLayout.LayoutParams(width, height);
    layout.setLayoutParams(adaptLayout);
}

Answer 1

尝试设置相对布局的宽度和高度，如下所示：

LayoutParams params = layout.getLayoutParams();
params.width= width;
params.width= height;
layout.setLayoutParams(params);

您可以使用TypedValue.applyDimension方法根据设备屏幕密度将宽度和高度转换为dp

滚动ListView时更改行尺寸

1 个答案: