简介：

发展过程中可能遇到的2一个或多个其他listview为了用相应的关系保持滚动的情况下一起，本文演示了这种效应为大家。

功效：

实现原理：

在滚动当中不论什么一个ListView的时候，同一时候设置其它ListView的滚动位置。

演示样例中使用的是水平ListView。

HListView的项目托管地址是：https://github.com/sephiroth74/HorizontalVariableListView   有兴趣的能够研究一下

步骤：

1、为了能实现同一时候滚动的情况，有一些条件。首先是HListView的Item的宽度是一一直的，如我设置的

<?

xml version="1.0" encoding="utf-8"?>

<TextView xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="60dp"

    android:layout_height="60dp"

    android:gravity="center"

    android:background="#abcdef"

    android:text="Terry10" />

2、为了大家仅仅管的感受做法，我将源代码贴出例如以下，大家着重看关键代码就可以：

public class MainActivity extends Activity {

	private HListView mListView1;

	private HListView mListView2;

	private HListView mListView3;

	private HListView mListView4;

	private HListView mListView5;

	private List<HListView> viewList = new ArrayList<HListView>();

	private String[] contentArray = new String[] { "Terry1", "Terry2",

			"Terry3", "Terry4", "Terry5", "Terry6", "Terry7", "Terry8",

			"Terry9", "Terry10", "Terry11", "Terry12", "Terry13", "Terry14",

			"Terry15", "Terry16", "Terry17", "Terry18" };

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_main);

		mListView1 = (HListView) findViewById(R.id.listview1);

		mListView2 = (HListView) findViewById(R.id.listview2);

		mListView3 = (HListView) findViewById(R.id.listview3);

		mListView4 = (HListView) findViewById(R.id.listview4);

		mListView5 = (HListView) findViewById(R.id.listview5);

		mListView1.setAdapter(new MyAdapter());

		mListView2.setAdapter(new MyAdapter());

		mListView3.setAdapter(new MyAdapter());

		mListView4.setAdapter(new MyAdapter());

		mListView5.setAdapter(new MyAdapter());

		viewList.add(mListView1);

		viewList.add(mListView2);

		viewList.add(mListView3);

		viewList.add(mListView4);

		viewList.add(mListView5);

		MyScrollListener mListener = new MyScrollListener();

		for (HListView item : viewList) {

			item.setOnScrollListener(mListener);

		}

	}

	private class MyScrollListener implements OnScrollListener {

		@Override

		public void onScrollStateChanged(AbsHListView view, int scrollState) {

			// 关键代码

			if (scrollState == SCROLL_STATE_IDLE

					|| scrollState == SCROLL_STATE_TOUCH_SCROLL) {

				View subView = view.getChildAt(0);

				if (subView != null) {

					final int top = subView.getLeft();

					final int position = view.getFirstVisiblePosition();

					for (HListView item : viewList) {

						item.setSelectionFromLeft(position, top);

					}

				}

			}

		}

		@Override

		public void onScroll(AbsHListView view, int firstVisibleItem,

				int visibleItemCount, int totalItemCount) {

			// 关键代码

			View subView = view.getChildAt(0);

			if (subView != null) {

				final int top = subView.getLeft();

				for (HListView item : viewList) {

					item.setSelectionFromLeft(firstVisibleItem, top);

				}

			}

		}

	}

	private class MyAdapter extends BaseAdapter {

		@Override

		public int getCount() {

			return contentArray.length;

		}

		@Override

		public Object getItem(int position) {

			return contentArray[position];

		}

		@Override

		public long getItemId(int position) {

			return position;

		}

		@Override

		public View getView(int position, View convertView, ViewGroup parent) {

			TextView tv = (TextView) getLayoutInflater().inflate(R.layout.item,

					parent, false);

			tv.setText(contentArray[position]);

			return tv;

		}

	}

}

全文完