1.listview解决方法

public static void setListViewHeightBasedOnChildren(ListView listView) {    if(listView == null) return;    ListAdapter listAdapter = listView.getAdapter();    if (listAdapter == null) {        // pre-condition        return;    }    int totalHeight = 0;    for (int i = 0; i < listAdapter.getCount(); i++) {        View listItem = listAdapter.getView(i, null, listView);        listItem.measure(0, 0);        totalHeight += listItem.getMeasuredHeight();    }    ViewGroup.LayoutParams params = listView.getLayoutParams();    params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));    listView.setLayoutParams(params);}

 2.gridview解决方法

public static void setGridViewHeightBasedOnChildren(GridView gridView){        // 获取listview的adapter        ListAdapter listAdapter = gridView.getAdapter();        if (listAdapter == null) {            return;        }        // 固定列宽，有多少列        int col = 3; //gridView.getNumColumns();        int totalHeight = 0;        // i每次加4，相当于listAdapter.getCount()小于等于4时 循环一次，计算一次item的高度，        // listAdapter.getCount()小于等于8时计算两次高度相加        for (int i = 0; i < listAdapter.getCount(); i += col) {            // 获取listview的每一个item            View listItem = listAdapter.getView(i, null, gridView);            listItem.measure(0, 0);            // 获取item的高度和            totalHeight += listItem.getMeasuredHeight();        }        // 获取listview的布局参数        ViewGroup.LayoutParams params = gridView.getLayoutParams();        // 设置高度        params.height = totalHeight+20;        // 设置margin        ((ViewGroup.MarginLayoutParams) params).setMargins(10, 10, 10, 10);        // 设置参数        gridView.setLayoutParams(params);    }

 

 

3.自定义ListView

public class CustomListView extends ListView {    public CustomListView(Context context) {        super(context);    }    public CustomListView(Context context, AttributeSet attrs) {        super(context, attrs);    }    public CustomListView(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);    }    @Override    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {                 int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,                                 MeasureSpec.AT_MOST);                 super.onMeasure(widthMeasureSpec, expandSpec);             }}