Android中ScrollView与ListView共用问题的解决方案

 

需要在一个界面里放置超出屏幕容量的内容，需要用到ScrollView实现滚屏；想要将内容以列表的形式动态展示，需要用到ListView。但是如果想要在一个界面中使用多个列表，并实现整体滚屏，那么ScrollView和ListView共用的时候会出现UI问题，无法实现想要的效果。具体原因就不清楚了，至少在2.1以下是有问题的，应该算是Android的一个bug吧。

其实要实现这样的一个效果也并不难，不过不能直接使用ListView，而需要自己定义一个列表布局，并实现其Adapter设置相关的方法来实现。于是我实现了一个继承自LinearLayout的类LinearLayoutForListView，并添加Adapter相关方法，实现这一功能。

public class LinearLayoutForListView extends LinearLayout {private ListAdapter adapter;private OnClickListener onClickListener = null;private OnTouchListener onTouchListener = null;/** * 绑定布局 */public void bindLinearLayout() {int count = adapter.getCount();for (int i = 0; i < count; i++) {View v = adapter.getView(i, null, null);v.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));v.setOnTouchListener(this.onTouchListener);v.setOnClickListener(this.onClickListener);v.setId(i);addView(v, i);}Log.v("countTAG", "" + count);}public LinearLayoutForListView(Context context) {super(context);}public LinearLayoutForListView(Context context, AttributeSet attrs) {super(context, attrs);// TODO Auto-generated constructor stub}/** * 获取Adapter * * @return adapter */public ListAdapter getAdpater() {return adapter;}/** * 设置数据 * * @param adpater */public void setAdapter(ListAdapter adpater) {this.adapter = adpater;bindLinearLayout();}/** * 获取点击事件 * * @return */public OnClickListener getOnclickListner() {return onClickListener;}/** * 设置点击事件 * * @param onClickListener */public void setOnclickLinstener(OnClickListener onClickListener) {this.onClickListener = onClickListener;}public OnTouchListener getOnTouchListener() {return onTouchListener;}public void setOnTouchListener(OnTouchListener onTouchListener) {this.onTouchListener = onTouchListener;}} 

使用的时候其实跟ListView的使用方式一样，同样是用一个继承自BaseAdapter的类对象作为数据源。

private void fillData(){LinearLayoutForListView mSetupList = (LinearLayoutForListView) findViewById(R.id.linear_list);mSetupList.setOnclickLinstener(SetupListClickEvent);mSetupList.setOnTouchListener(SetupListTouchEvent);mSetupList.setAdapter(new ListAdapter(this));}public class ListAdapter extends BaseAdapter{private LayoutInflater mInflater;public ListAdapter(Context context){// Cache the LayoutInflate to avoid asking for a new one each time.mInflater = LayoutInflater.from(context);}/** * The number of items in the list is determined by the number of * speeches in our array. * * @see android.widget.ListAdapter#getCount() */public int getCount(){return this.itemList.length;}/** * Since the data comes from an array, just returning the index is * sufficent to get at the data. If we were using a more complex data * structure, we would return whatever object represents one row in the * list. * * @see android.widget.ListAdapter#getItem(int) */public Object getItem(int position){return position;}/** * Use the array index as a unique id. * * @see android.widget.ListAdapter#getItemId(int) */public long getItemId(int position){return position;}/** * Make a view to hold each row. * * @see android.widget.ListAdapter#getView(int, android.view.View, * android.view.ViewGroup) */public View getView(int position, View convertView, ViewGroup parent){// Do something or create convertViewreturn convertView;}}View.OnTouchListener SetupListTouchEvent = new View.OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {// TODO Auto-generated method stubreturn false;}};View.OnClickListener SetupListClickEvent = new View.OnClickListener(){@Overridepublic void onClick(View v) {// TODO Auto-generated method stubint position = v.getId();...}};