ListView或GridView与ScrollView共存,高度显示问题

自定义ListView(或GridView),重写里面的OnMeasure()方法重新计算高度

public class MyListView extends ListView {

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

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		int expandSpaec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
		super.onMeasure(widthMeasureSpec, expandSpaec);
	}
	
}
计算listView高度(各项不等高情况):

/**
	 * 动态设置ListView高度(各表项不等高)
	 * 
	 * @param listView
	 */
	private void setListViewHeightBasedOnItems(ListView listView) {
		ListAdapter listAdapter = listView.getAdapter(); // 获取适配器
		if (listAdapter == null) {
			return;
		}
		int count = listAdapter.getCount(); // item数量
		int totalHeight = 0;
		for (int i = 0; i < count; i++) {
			View item = listAdapter.getView(i, null, listView);
			item.measure(0, 0);
			int height = item.getMeasuredHeight();
			totalHeight += height;
			item = null;
		}
		ViewGroup.LayoutParams params = listView.getLayoutParams();
		params.height = totalHeight + (listView.getDividerHeight() * (count - 1)); // 计算ListView高度
		listView.setLayoutParams(params); // 设置ListView高度
	}


若listView各项等高,可不重新定义listView,直接在初始话listView 时计算高度,亦可实现相应的效果:

/**
	 * 动态设置ListView高度(各列表项等高)
	 * 
	 * @param listView
	 */
	private void setListViewHeightBasedOnItems2(ListView listView) {
		ListAdapter listAdapter = listView.getAdapter(); // 获取适配器
		if (listAdapter == null) {
			return;
		}
		int count = listAdapter.getCount(); // item数量
		View item0 = listAdapter.getView(0, null, listView); // 选取首个item
		item0.measure(0, 0);
		int itemHeight = item0.getMeasuredHeight(); // 获取首个列表项高度
		int dividerHeight = listView.getDividerHeight(); // 获取分割线高度
		ViewGroup.LayoutParams params = listView.getLayoutParams();
		params.height = (itemHeight + dividerHeight) * count - dividerHeight; // 计算ListView高度
		listView.setLayoutParams(params); // 设置ListView高度
	}


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