MessageListView.java

package com.netease.nim.uikit.common.ui.listview;

import android.content.Context;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.widget.BaseAdapter;

import com.netease.nim.uikit.common.adapter.IViewReclaimer;

public class MessageListView extends AutoRefreshListView {

	private IViewReclaimer viewReclaimer;

	private GestureDetector gestureDetector;

	private OnListViewEventListener listener;

	private RecyclerListener recyclerListener = new RecyclerListener() {

		@Override
		public void onMovedToScrapHeap(View view) {
			if (viewReclaimer != null) {
				viewReclaimer.reclaimView(view);
			}
		}
	};

	public MessageListView(Context context) {
		super(context);
		init(context);
	}

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

	public MessageListView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		init(context);
	}

	private void init(Context context) {
		setRecyclerListener(recyclerListener);

		gestureDetector = new GestureDetector(context, new GestureListener());
	}

	private boolean isScroll = false;

	@Override
	public boolean onTouchEvent(MotionEvent event) {
		gestureDetector.onTouchEvent(event);

		if (event.getAction() == MotionEvent.ACTION_CANCEL || event.getAction() == MotionEvent.ACTION_UP) {
			isScroll = false;
		}

		return super.onTouchEvent(event);
	}

	public void setListViewEventListener(OnListViewEventListener listener) {
		this.listener = listener;
	}

	private class GestureListener extends GestureDetector.SimpleOnGestureListener {
		@Override
		public boolean onSingleTapUp(MotionEvent e) {
			if (!isScroll) {
				if (listener != null) {
					listener.onListViewStartScroll();
					isScroll = true;
				}
			}

			return true;
		}

		public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
			if (!isScroll) {
				if (listener != null) {
					listener.onListViewStartScroll();
					isScroll = true;
				}
			}

			return true;
		}
	}

	public void setAdapter(BaseAdapter adapter) {
		// view reclaimer
		viewReclaimer = adapter != null && adapter instanceof IViewReclaimer ? (IViewReclaimer) adapter : null;

		super.setAdapter(adapter);
	}

	@Override
	protected void onSizeChanged(int w, int h, int oldw, int oldh) {
		super.onSizeChanged(w, h, oldw, oldh);
	}

	public interface OnListViewEventListener {
		public void onListViewStartScroll();
	}
}