android xlistview

 

 

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/root"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"  >
 
    <com.curiousby.demoxlistview.xlistview.MsgListView
        android:id="@+id/mylist"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:transcriptMode="normal" 
        >
    </com.curiousby.demoxlistview.xlistview.MsgListView>
 
</LinearLayout>

 

 

xlistview_header.xml

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/coversation_bg"
    android:gravity="bottom" >

    <RelativeLayout
        android:id="@+id/xlistview_header_content"
        android:layout_width="fill_parent"
        android:layout_height="60dp"
        android:paddingLeft="40dip" >

        <FrameLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="true" >

            <ImageView
                android:id="@+id/xlistview_header_arrow"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:src="@drawable/refresh_arrow_2" />

            <ProgressBar
                android:id="@+id/xlistview_header_progressbar"
                android:layout_width="16dip"
                android:layout_height="16dip"
                android:layout_gravity="center"
                android:indeterminate="true"
                android:indeterminateBehavior="repeat"
                android:indeterminateDrawable="@drawable/common_loading4"
                android:visibility="invisible" />
        </FrameLayout>

        <LinearLayout
            android:id="@+id/xlistview_header_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:gravity="center"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/xlistview_header_hint_textview"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#ffffff"
                android:text="@string/xlistview_header_hint_normal" />

            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="3dp" >

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textColor="#ffffff"
                    android:text="@string/xlistview_header_last_time"
                    android:textSize="12sp" />

                <TextView
                    android:id="@+id/xlistview_header_time"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="刚刚"
                    android:textColor="#ffffff"
                    android:textSize="12sp" />
            </LinearLayout>
        </LinearLayout>
    </RelativeLayout>

</LinearLayout>

 

 

xlistview_footer.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#0fff" >

    <RelativeLayout
        android:id="@+id/xlistview_footer_content"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center" >

        <LinearLayout
            android:id="@+id/xlistview_footer_progressbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:layout_marginBottom="2dp"
            android:layout_marginTop="2dp"
            android:gravity="center"
            android:orientation="horizontal" >

            <ProgressBar
                android:layout_width="16dip"
                android:layout_height="16dip"
                android:indeterminate="true"
                android:indeterminateBehavior="repeat"
                android:indeterminateDrawable="@drawable/common_loading3" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="5dip"
                android:text="@string/xlistview_header_hint_loading"
                android:textColor="#000000" />
        </LinearLayout>

        <TextView
            android:id="@+id/xlistview_footer_hint_textview"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:text="@string/xlistview_footer_hint_normal"
            android:textColor="#000000"
            android:visibility="invisible" />
    </RelativeLayout>

</LinearLayout>

 

 

message_header.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="#0fff"
    android:gravity="bottom" >

    <RelativeLayout
        android:id="@+id/msg_header_content"
        android:layout_width="fill_parent"
        android:layout_height="30dp" >

        <FrameLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true" >

            <ProgressBar
                android:id="@+id/xlistview_header_progressbar"
                android:layout_width="16dip"
                android:layout_height="16dip"
                android:layout_gravity="center"
                android:indeterminate="true"
                android:indeterminateBehavior="repeat"
                android:indeterminateDrawable="@drawable/common_loading3"
                android:visibility="invisible" />

            <TextView
                android:id="@+id/xlistview_header_hint_textview"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="显示更多消息"
                android:textColor="#000000" />
        </FrameLayout>
    </RelativeLayout>

</LinearLayout>

 

 

package com.curiousby.demoxlistview;

import java.util.ArrayList;
import java.util.List;

import com.curiousby.demoxlistview.xlistview.MsgListView; 
import com.curiousby.demoxlistview.xlistview.MsgListView.IXListViewListener;

import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.app.Activity;
import android.content.Context; 

public class MainActivity extends Activity implements IXListViewListener, OnTouchListener {

	private List<String> mlist = new ArrayList<String>();
	private MylistAdapter mAdapter;
	private Context context;
	private MsgListView listView;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		
		context = MainActivity.this;
		mAdapter = new MylistAdapter( this);
		mAdapter.setMlist(mlist); 
		listView = (MsgListView) findViewById(R.id.mylist);
		listView.setOnTouchListener(this);
		listView.setPullLoadEnable(false);
		listView.setXListViewListener(this);
		listView.setAdapter(mAdapter);
		listView.setSelection(mAdapter.getCount() - 1);
	 
		mlist.add("a");
		mAdapter.notifyDataSetChanged();
	}

	private int i;
	@Override
	public void onRefresh() {
		mlist.add(""+i++);
		
		mAdapter.notifyDataSetChanged();
		
		listView.setSelection(mAdapter.getCount() - 1);
		listView.stopRefresh();
	}

	@Override
	public void onLoadMore() { 
		mlist.add(""+i++);
		listView.setSelection(mAdapter.getCount() - 1);
		mAdapter.notifyDataSetChanged();
	}

	@Override
	public boolean onTouch(View arg0, MotionEvent arg1) { 
		return false;
	}

 

 

}

 

 

 

package com.curiousby.demoxlistview;

import java.util.List;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

public class MylistAdapter extends BaseAdapter{

	private List<String> mlist;
	private LayoutInflater mInflater;
	private Context context;
	
	
	
	public MylistAdapter(  Context context) { 
		this.mInflater =  LayoutInflater.from(context);
		this.context = context;
	}
 
	public void setMlist(List<String> mlist) {
		this.mlist = mlist;
		notifyDataSetChanged();
	}



	@Override
	public int getCount() {
		 if (mlist != null ) {
			return mlist.size();
		}
		return 0;
	}

	@Override
	public String getItem(int position) {
		 if (mlist != null ) {
				return (String) mlist.get(position);
			}
		return "";
	}

	@Override
	public long getItemId(int position) {
		return 0;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		String item = getItem(position);
		ViewHolder  viewHolder = null;
		if (convertView == null) {
			convertView = mInflater.inflate(R.layout.list_item, parent, false);
			viewHolder =new ViewHolder(convertView);
		    convertView.setTag(viewHolder);
		}else{
			viewHolder = (ViewHolder) convertView.getTag( );
		}
		 viewHolder.text.setText(item);
		return convertView;
	}

	class ViewHolder {
		private TextView text;
		
		ViewHolder(View baseView){
			this.text  = (TextView) baseView.findViewById(R.id.text);
		}
	}
}

 

 

/**
 * @file XListViewHeader.java
 * @create Apr 18, 2012 5:22:27 PM
 * @author Maxwin
 * @description XListView's header
 */
package com.curiousby.demoxlistview.xlistview;

import com.curiousby.demoxlistview.R;

import android.content.Context;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;
 

public class XListViewHeader extends LinearLayout {
	private LinearLayout mContainer;
	private ImageView mArrowImageView;
	private ProgressBar mProgressBar;
	private TextView mHintTextView;
	private int mState = STATE_NORMAL;

	private Animation mRotateUpAnim;
	private Animation mRotateDownAnim;

	private final int ROTATE_ANIM_DURATION = 180;

	public final static int STATE_NORMAL = 0;
	public final static int STATE_READY = 1;
	public final static int STATE_REFRESHING = 2;

	public XListViewHeader(Context context) {
		super(context);
		initView(context);
	}

	/**
	 * @param context
	 * @param attrs
	 */
	public XListViewHeader(Context context, AttributeSet attrs) {
		super(context, attrs);
		initView(context);
	}

	private void initView(Context context) {
		// 初始情况，设置下拉刷新view高度为0
		LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
				LayoutParams.FILL_PARENT, 0);
		mContainer = (LinearLayout) LayoutInflater.from(context).inflate(
				R.layout.xlistview_header, null);
		addView(mContainer, lp);
		setGravity(Gravity.BOTTOM);

		mArrowImageView = (ImageView) findViewById(R.id.xlistview_header_arrow);
		mHintTextView = (TextView) findViewById(R.id.xlistview_header_hint_textview);
		mProgressBar = (ProgressBar) findViewById(R.id.xlistview_header_progressbar);

		mRotateUpAnim = new RotateAnimation(0.0f, -180.0f,
				Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
				0.5f);
		mRotateUpAnim.setDuration(ROTATE_ANIM_DURATION);
		mRotateUpAnim.setFillAfter(true);
		mRotateDownAnim = new RotateAnimation(-180.0f, 0.0f,
				Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
				0.5f);
		mRotateDownAnim.setDuration(ROTATE_ANIM_DURATION);
		mRotateDownAnim.setFillAfter(true);
	}

	public void setState(int state) {
		if (state == mState)
			return;

		if (state == STATE_REFRESHING) { // 显示进度
			mArrowImageView.clearAnimation();
			mArrowImageView.setVisibility(View.INVISIBLE);
			mProgressBar.setVisibility(View.VISIBLE);
		} else { // 显示箭头图片
			mArrowImageView.setVisibility(View.VISIBLE);
			mProgressBar.setVisibility(View.INVISIBLE);
		}

		switch (state) {
		case STATE_NORMAL:
			if (mState == STATE_READY) {
				mArrowImageView.startAnimation(mRotateDownAnim);
			}
			if (mState == STATE_REFRESHING) {
				mArrowImageView.clearAnimation();
			}
			mHintTextView.setText(R.string.xlistview_header_hint_normal);
			break;
		case STATE_READY:
			if (mState != STATE_READY) {
				mArrowImageView.clearAnimation();
				mArrowImageView.startAnimation(mRotateUpAnim);
				mHintTextView.setText(R.string.xlistview_header_hint_ready);
			}
			break;
		case STATE_REFRESHING:
			mHintTextView.setText(R.string.xlistview_header_hint_loading);
			break;
		default:
		}

		mState = state;
	}

	public void setVisiableHeight(int height) {
		if (height < 0)
			height = 0;
		LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) mContainer
				.getLayoutParams();
		lp.height = height;
		mContainer.setLayoutParams(lp);
	}

	public int getVisiableHeight() {
		return mContainer.getHeight();
	}

}

 

 

/**
 * @file XFooterView.java
 * @create Mar 31, 2012 9:33:43 PM
 * @author Maxwin
 * @description XListView's footer
 */
package com.curiousby.demoxlistview.xlistview;

import com.curiousby.demoxlistview.R;

import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
 
public class XListViewFooter extends LinearLayout {
	public final static int STATE_NORMAL = 0;
	public final static int STATE_READY = 1;
	public final static int STATE_LOADING = 2;

	private Context mContext;

	private View mContentView;
	private View mProgressBar;
	private TextView mHintView;
	
	public XListViewFooter(Context context) {
		super(context);
		initView(context);
	}
	
	public XListViewFooter(Context context, AttributeSet attrs) {
		super(context, attrs);
		initView(context);
	}

	
	public void setState(int state) {
		mHintView.setVisibility(View.INVISIBLE);
		mProgressBar.setVisibility(View.INVISIBLE);
		mHintView.setVisibility(View.INVISIBLE);
		if (state == STATE_READY) {
			mHintView.setVisibility(View.VISIBLE);
			mHintView.setText(R.string.xlistview_footer_hint_ready);
		} else if (state == STATE_LOADING) {
			mProgressBar.setVisibility(View.VISIBLE);
		} else {
			mHintView.setVisibility(View.VISIBLE);
			mHintView.setText(R.string.xlistview_footer_hint_normal);
		}
	}
	
	public void setBottomMargin(int height) {
		if (height < 0) return ;
		LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams)mContentView.getLayoutParams();
		lp.bottomMargin = height;
		mContentView.setLayoutParams(lp);
	}
	
	public int getBottomMargin() {
		LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams)mContentView.getLayoutParams();
		return lp.bottomMargin;
	}
	
	
	/**
	 * normal status
	 */
	public void normal() {
		mHintView.setVisibility(View.VISIBLE);
		mProgressBar.setVisibility(View.GONE);
	}
	
	
	/**
	 * loading status 
	 */
	public void loading() {
		mHintView.setVisibility(View.GONE);
		mProgressBar.setVisibility(View.VISIBLE);
	}
	
	/**
	 * hide footer when disable pull load more
	 */
	public void hide() {
		LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams)mContentView.getLayoutParams();
		lp.height = 0;
		mContentView.setLayoutParams(lp);
	}
	
	/**
	 * show footer
	 */
	public void show() {
		LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams)mContentView.getLayoutParams();
		lp.height = LayoutParams.WRAP_CONTENT;
		mContentView.setLayoutParams(lp);
	}
	
	private void initView(Context context) {
		mContext = context;
		LinearLayout moreView = (LinearLayout)LayoutInflater.from(mContext).inflate(R.layout.xlistview_footer, null);
		addView(moreView);
		moreView.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
		
		mContentView = moreView.findViewById(R.id.xlistview_footer_content);
		mProgressBar = moreView.findViewById(R.id.xlistview_footer_progressbar);
		mHintView = (TextView)moreView.findViewById(R.id.xlistview_footer_hint_textview);
	}
	
	
}

 

 

/**
 * @file XListView.java
 * @package me.maxwin.view
 * @create Mar 18, 2012 6:28:41 PM
 * @author Maxwin
 * @description An ListView support (a) Pull down to refresh, (b) Pull up to load more.
 * 		Implement IXListViewListener, and see stopRefresh() / stopLoadMore().
 */
package com.curiousby.demoxlistview.xlistview;
 
import com.curiousby.demoxlistview.R;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.animation.DecelerateInterpolator;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ExpandableListView;
import android.widget.ListAdapter;
import android.widget.RelativeLayout;
import android.widget.Scroller;
import android.widget.TextView;
 

public class XExpandableListView extends ExpandableListView implements
		OnScrollListener {

	private float mLastY = -1; // save event y
	private Scroller mScroller; // used for scroll back
	private OnScrollListener mScrollListener; // user's scroll listener

	// the interface to trigger refresh and load more.
	private IXListViewListener mListViewListener;

	// -- header view
	private XListViewHeader mHeaderView;
	// header view content, use it to calculate the Header's height. And hide it
	// when disable pull refresh.
	private RelativeLayout mHeaderViewContent;
	private TextView mHeaderTimeView;
	private int mHeaderViewHeight; // header view's height
	private boolean mEnablePullRefresh = true;//
	private boolean mPullRefreshing = false; // is refreashing.

	// -- footer view
	private XListViewFooter mFooterView;
	private boolean mEnablePullLoad;
	private boolean mPullLoading;
	private boolean mIsFooterReady = false;

	// total list items, used to detect is at the bottom of listview.
	private int mTotalItemCount;

	// for mScroller, scroll back from header or footer.
	private int mScrollBack;
	private final static int SCROLLBACK_HEADER = 0;
	private final static int SCROLLBACK_FOOTER = 1;

	private final static int SCROLL_DURATION = 400; // scroll back duration
	private final static int PULL_LOAD_MORE_DELTA = 50; // when pull up >= 50px
														// at bottom, trigger
														// load more.
	private final static float OFFSET_RADIO = 1.8f; // support iOS like pull
													// feature.

	/**
	 * @param context
	 */
	public XExpandableListView(Context context) {
		super(context);
		initWithContext(context);
	}

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

	public XExpandableListView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		initWithContext(context);
	}

	private void initWithContext(Context context) {
		mScroller = new Scroller(context, new DecelerateInterpolator());
		// XListView need the scroll event, and it will dispatch the event to
		// user's listener (as a proxy).
		super.setOnScrollListener(this);

		// init header view
		mHeaderView = new XListViewHeader(context);
		mHeaderViewContent = (RelativeLayout) mHeaderView
				.findViewById(R.id.xlistview_header_content);
		mHeaderTimeView = (TextView) mHeaderView
				.findViewById(R.id.xlistview_header_time);
		addHeaderView(mHeaderView);

		// init footer view
		mFooterView = new XListViewFooter(context);

		// init header height
		mHeaderView.getViewTreeObserver().addOnGlobalLayoutListener(
				new OnGlobalLayoutListener() {
					@Override
					public void onGlobalLayout() {
						mHeaderViewHeight = mHeaderViewContent.getHeight();
						getViewTreeObserver()
								.removeGlobalOnLayoutListener(this);
					}
				});
	}

	@Override
	public void setAdapter(ListAdapter adapter) {
		// make sure XListViewFooter is the last footer view, and only add once.
		if (mIsFooterReady == false) {
			mIsFooterReady = true;
			addFooterView(mFooterView);
		}
		super.setAdapter(adapter);
	}

	/**
	 * enable or disable pull down refresh feature.
	 * 
	 * @param enable
	 */
	public void setPullRefreshEnable(boolean enable) {
		mEnablePullRefresh = enable;
		if (!mEnablePullRefresh) { // disable, hide the content
			mHeaderViewContent.setVisibility(View.INVISIBLE);
		} else {
			mHeaderViewContent.setVisibility(View.VISIBLE);
		}
	}

	/**
	 * enable or disable pull up load more feature.
	 * 
	 * @param enable
	 */
	public void setPullLoadEnable(boolean enable) {
		mEnablePullLoad = enable;
		if (!mEnablePullLoad) {
			mFooterView.hide();
			mFooterView.setOnClickListener(null);
		} else {
			mPullLoading = false;
			mFooterView.show();
			mFooterView.setState(XListViewFooter.STATE_NORMAL);
			// both "pull up" and "click" will invoke load more.
			mFooterView.setOnClickListener(new OnClickListener() {
				@Override
				public void onClick(View v) {
					startLoadMore();
				}
			});
		}
	}

	/**
	 * stop refresh, reset header view.
	 */
	public void stopRefresh() {
		if (mPullRefreshing == true) {
			mPullRefreshing = false;
			resetHeaderHeight();
		}
	}

	/**
	 * stop load more, reset footer view.
	 */
	public void stopLoadMore() {
		if (mPullLoading == true) {
			mPullLoading = false;
			mFooterView.setState(XListViewFooter.STATE_NORMAL);
		}
	}

	/**
	 * set last refresh time
	 * 
	 * @param time
	 */
	public void setRefreshTime(String time) {
		mHeaderTimeView.setText(time);
	}

	public void setRefreshTime(long time) {
		mHeaderTimeView.setText(TimeUtil.getChatTime(time));
	}

	private void invokeOnScrolling() {
		if (mScrollListener instanceof OnXScrollListener) {
			OnXScrollListener l = (OnXScrollListener) mScrollListener;
			l.onXScrolling(this);
		}
	}

	private void updateHeaderHeight(float delta) {
		mHeaderView.setVisiableHeight((int) delta
				+ mHeaderView.getVisiableHeight());
		if (mEnablePullRefresh && !mPullRefreshing) { // 未处于刷新状态，更新箭头
			if (mHeaderView.getVisiableHeight() > mHeaderViewHeight) {
				mHeaderView.setState(XListViewHeader.STATE_READY);
			} else {
				mHeaderView.setState(XListViewHeader.STATE_NORMAL);
			}
		}
		setSelection(0); // scroll to top each time
	}

	/**
	 * reset header view's height.
	 */
	private void resetHeaderHeight() {
		int height = mHeaderView.getVisiableHeight();
		if (height == 0) // not visible.
			return;
		// refreshing and header isn't shown fully. do nothing.
		if (mPullRefreshing && height <= mHeaderViewHeight) {
			return;
		}
		int finalHeight = 0; // default: scroll back to dismiss header.
		// is refreshing, just scroll back to show all the header.
		if (mPullRefreshing && height > mHeaderViewHeight) {
			finalHeight = mHeaderViewHeight;
		}
		mScrollBack = SCROLLBACK_HEADER;
		mScroller.startScroll(0, height, 0, finalHeight - height,
				SCROLL_DURATION);
		// trigger computeScroll
		invalidate();
	}

	private void updateFooterHeight(float delta) {
		int height = mFooterView.getBottomMargin() + (int) delta;
		if (mEnablePullLoad && !mPullLoading) {
			if (height > PULL_LOAD_MORE_DELTA) { // height enough to invoke load
													// more.
				mFooterView.setState(XListViewFooter.STATE_READY);
			} else {
				mFooterView.setState(XListViewFooter.STATE_NORMAL);
			}
		}
		mFooterView.setBottomMargin(height);

		// setSelection(mTotalItemCount - 1); // scroll to bottom
	}

	private void resetFooterHeight() {
		int bottomMargin = mFooterView.getBottomMargin();
		if (bottomMargin > 0) {
			mScrollBack = SCROLLBACK_FOOTER;
			mScroller.startScroll(0, bottomMargin, 0, -bottomMargin,
					SCROLL_DURATION);
			invalidate();
		}
	}

	private void startLoadMore() {
		mPullLoading = true;
		mFooterView.setState(XListViewFooter.STATE_LOADING);
		if (mListViewListener != null) {
			mListViewListener.onLoadMore();
		}
	}

	@Override
	public boolean onTouchEvent(MotionEvent ev) {
		if (mLastY == -1) {
			mLastY = ev.getRawY();
		}

		switch (ev.getAction()) {
		case MotionEvent.ACTION_DOWN:
			mLastY = ev.getRawY();
			break;
		case MotionEvent.ACTION_MOVE:
			final float deltaY = ev.getRawY() - mLastY;
			mLastY = ev.getRawY();
			if (getFirstVisiblePosition() == 0
					&& (mHeaderView.getVisiableHeight() > 0 || deltaY > 0)) {
				// the first item is showing, header has shown or pull down.
				updateHeaderHeight(deltaY / OFFSET_RADIO);
				invokeOnScrolling();
			} else if (getLastVisiblePosition() == mTotalItemCount - 1
					&& (mFooterView.getBottomMargin() > 0 || deltaY < 0)) {
				// last item, already pulled up or want to pull up.
				updateFooterHeight(-deltaY / OFFSET_RADIO);
			}
			break;
		default:
			mLastY = -1; // reset
			if (getFirstVisiblePosition() == 0) {
				// invoke refresh
				if (mEnablePullRefresh
						&& mHeaderView.getVisiableHeight() > mHeaderViewHeight) {
					mPullRefreshing = true;
					mHeaderView.setState(XListViewHeader.STATE_REFRESHING);
					if (mListViewListener != null) {
						mListViewListener.onRefresh();
					}
				}
				resetHeaderHeight();
			} else if (getLastVisiblePosition() == mTotalItemCount - 1) {
				// invoke load more.
				if (mEnablePullLoad
						&& mFooterView.getBottomMargin() > PULL_LOAD_MORE_DELTA) {
					startLoadMore();
				}
				resetFooterHeight();
			}
			break;
		}
		return super.onTouchEvent(ev);
	}

	@Override
	public void computeScroll() {
		if (mScroller.computeScrollOffset()) {
			if (mScrollBack == SCROLLBACK_HEADER) {
				mHeaderView.setVisiableHeight(mScroller.getCurrY());
			} else {
				mFooterView.setBottomMargin(mScroller.getCurrY());
			}
			postInvalidate();
			invokeOnScrolling();
		}
		super.computeScroll();
	}

	@Override
	public void setOnScrollListener(OnScrollListener l) {
		mScrollListener = l;
	}

	@Override
	public void onScrollStateChanged(AbsListView view, int scrollState) {
		if (mScrollListener != null) {
			mScrollListener.onScrollStateChanged(view, scrollState);
		}
	}

	@Override
	public void onScroll(AbsListView view, int firstVisibleItem,
			int visibleItemCount, int totalItemCount) {
		// send to user's listener
		mTotalItemCount = totalItemCount;
		if (mScrollListener != null) {
			mScrollListener.onScroll(view, firstVisibleItem, visibleItemCount,
					totalItemCount);
		}
	}

	public void setXListViewListener(IXListViewListener l) {
		mListViewListener = l;
	}

	/**
	 * you can listen ListView.OnScrollListener or this one. it will invoke
	 * onXScrolling when header/footer scroll back.
	 */
	public interface OnXScrollListener extends OnScrollListener {
		public void onXScrolling(View view);
	}

	/**
	 * implements this interface to get refresh/load more event.
	 */
	public interface IXListViewListener {
		public void onRefresh();

		public void onLoadMore();
	}
}

 

 

 

package com.curiousby.demoxlistview.xlistview;

import java.text.SimpleDateFormat;
import java.util.Date;

import android.annotation.SuppressLint;

/**
 * 时间工具类
 * 
 * @author way
 * 
 */
@SuppressLint("SimpleDateFormat")
public class TimeUtil {

	public static String getTime(long time) {
		SimpleDateFormat format = new SimpleDateFormat("yy-MM-dd HH:mm");
		return format.format(new Date(time));
	}

	public static String getHourAndMin(long time) {
		SimpleDateFormat format = new SimpleDateFormat("HH:mm");
		return format.format(new Date(time));
	}

	public static String getChatTime(long timesamp) {
		String result = "";
		SimpleDateFormat sdf = new SimpleDateFormat("dd");
		Date today = new Date(System.currentTimeMillis());
		Date otherDay = new Date(timesamp);
		int temp = Integer.parseInt(sdf.format(today))
				- Integer.parseInt(sdf.format(otherDay));

		switch (temp) {
		case 0:
			result = "今天 " + getHourAndMin(timesamp);
			break;
		case 1:
			result = "昨天 " + getHourAndMin(timesamp);
			break;
		case 2:
			result = "前天 " + getHourAndMin(timesamp);
			break;

		default:
			// result = temp + "天前 ";
			result = getTime(timesamp);
			break;
		}

		return result;
	}
}

 

 

/**
 * @file XListView.java
 * @package me.maxwin.view
 * @create Mar 18, 2012 6:28:41 PM
 * @author Maxwin
 * @description An ListView support (a) Pull down to refresh, (b) Pull up to load more.
 * 		Implement IXListViewListener, and see stopRefresh() / stopLoadMore().
 */
package com.curiousby.demoxlistview.xlistview;

import com.curiousby.demoxlistview.R;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.animation.DecelerateInterpolator;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.Scroller;
 
//com.curiousby.demoxlistview.xlistview.MsgListView
public class MsgListView extends ListView implements OnScrollListener {

	private float mLastY = -1; // save event y
	private Scroller mScroller; // used for scroll back
	private OnScrollListener mScrollListener; // user's scroll listener

	// the interface to trigger refresh and load more.
	private IXListViewListener mListViewListener;

	// -- header view
	private MsgHeader mHeaderView;
	// header view content, use it to calculate the Header's height. And hide it
	// when disable pull refresh.
	private RelativeLayout mHeaderViewContent;
	// private TextView mHeaderTimeView;
	private int mHeaderViewHeight; // header view's height
	private boolean mEnablePullRefresh = true;//
	private boolean mPullRefreshing = false; // is refreashing.

	// -- footer view
	private XListViewFooter mFooterView;
	private boolean mEnablePullLoad;
	private boolean mPullLoading;
	private boolean mIsFooterReady = false;

	// total list items, used to detect is at the bottom of listview.
	private int mTotalItemCount;

	// for mScroller, scroll back from header or footer.
	private int mScrollBack;
	private final static int SCROLLBACK_HEADER = 0;
	private final static int SCROLLBACK_FOOTER = 1;

	private final static int SCROLL_DURATION = 400; // scroll back duration
	private final static int PULL_LOAD_MORE_DELTA = 50; // when pull up >= 50px
														// at bottom, trigger
														// load more.
	private final static float OFFSET_RADIO = 1.8f; // support iOS like pull
													// feature.

	/**
	 * @param context
	 */
	public MsgListView(Context context) {
		super(context);
		initWithContext(context);
	}

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

	public MsgListView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		initWithContext(context);
	}

	private void initWithContext(Context context) {
		mScroller = new Scroller(context, new DecelerateInterpolator());
		// XListView need the scroll event, and it will dispatch the event to
		// user's listener (as a proxy).
		super.setOnScrollListener(this);

		// init header view
		mHeaderView = new MsgHeader(context);
		mHeaderViewContent = (RelativeLayout) mHeaderView
				.findViewById(R.id.msg_header_content);
		// mHeaderTimeView = (TextView) mHeaderView
		// .findViewById(R.id.xlistview_header_time);
		addHeaderView(mHeaderView);

		// init footer view
		mFooterView = new XListViewFooter(context);

		// init header height
		mHeaderView.getViewTreeObserver().addOnGlobalLayoutListener(
				new OnGlobalLayoutListener() {
					@Override
					public void onGlobalLayout() {
						mHeaderViewHeight = mHeaderViewContent.getHeight();
						getViewTreeObserver()
								.removeGlobalOnLayoutListener(this);
					}
				});
	}

	@Override
	public void setAdapter(ListAdapter adapter) {
		// make sure XListViewFooter is the last footer view, and only add once.
		if (mIsFooterReady == false) {
			mIsFooterReady = true;
			addFooterView(mFooterView);
		}
		super.setAdapter(adapter);
	}

	/**
	 * enable or disable pull down refresh feature.
	 * 
	 * @param enable
	 */
	public void setPullRefreshEnable(boolean enable) {
		mEnablePullRefresh = enable;
		if (!mEnablePullRefresh) { // disable, hide the content
			mHeaderViewContent.setVisibility(View.INVISIBLE);
		} else {
			mHeaderViewContent.setVisibility(View.VISIBLE);
		}
	}

	/**
	 * enable or disable pull up load more feature.
	 * 
	 * @param enable
	 */
	public void setPullLoadEnable(boolean enable) {
		mEnablePullLoad = enable;
		if (!mEnablePullLoad) {
			mFooterView.hide();
			mFooterView.setOnClickListener(null);
		} else {
			mPullLoading = false;
			mFooterView.show();
			mFooterView.setState(XListViewFooter.STATE_NORMAL);
			// both "pull up" and "click" will invoke load more.
			mFooterView.setOnClickListener(new OnClickListener() {
				@Override
				public void onClick(View v) {
					startLoadMore();
				}
			});
		}
	}

	/**
	 * stop refresh, reset header view.
	 */
	public void stopRefresh() {
		if (mPullRefreshing == true) {
			mPullRefreshing = false;
			resetHeaderHeight();
		}
	}

	/**
	 * stop load more, reset footer view.
	 */
	public void stopLoadMore() {
		if (mPullLoading == true) {
			mPullLoading = false;
			mFooterView.setState(XListViewFooter.STATE_NORMAL);
		}
	}

	/**
	 * set last refresh time
	 * 
	 * @param time
	 */
	// public void setRefreshTime(String time) {
	// mHeaderTimeView.setText(time);
	// }
	//
	// public void setRefreshTime(long time) {
	// mHeaderTimeView.setText(TimeUtil.getChatTime(time));
	// }

	private void invokeOnScrolling() {
		if (mScrollListener instanceof OnXScrollListener) {
			OnXScrollListener l = (OnXScrollListener) mScrollListener;
			l.onXScrolling(this);
		}
	}

	private void updateHeaderHeight(float delta) {
		mHeaderView.setVisiableHeight((int) delta
				+ mHeaderView.getVisiableHeight());
		if (mEnablePullRefresh && !mPullRefreshing) { // 未处于刷新状态，更新箭头
			if (mHeaderView.getVisiableHeight() > mHeaderViewHeight) {
				mHeaderView.setState(XListViewHeader.STATE_READY);
			} else {
				mHeaderView.setState(XListViewHeader.STATE_NORMAL);
			}
		}
		setSelection(0); // scroll to top each time
	}

	/**
	 * reset header view's height.
	 */
	private void resetHeaderHeight() {
		int height = mHeaderView.getVisiableHeight();
		if (height == 0) // not visible.
			return;
		// refreshing and header isn't shown fully. do nothing.
		if (mPullRefreshing && height <= mHeaderViewHeight) {
			return;
		}
		int finalHeight = 0; // default: scroll back to dismiss header.
		// is refreshing, just scroll back to show all the header.
		if (mPullRefreshing && height > mHeaderViewHeight) {
			finalHeight = mHeaderViewHeight;
		}
		mScrollBack = SCROLLBACK_HEADER;
		mScroller.startScroll(0, height, 0, finalHeight - height,
				SCROLL_DURATION);
		// trigger computeScroll
		invalidate();
	}

	private void updateFooterHeight(float delta) {
		int height = mFooterView.getBottomMargin() + (int) delta;
		if (mEnablePullLoad && !mPullLoading) {
			if (height > PULL_LOAD_MORE_DELTA) { // height enough to invoke load
													// more.
				mFooterView.setState(XListViewFooter.STATE_READY);
			} else {
				mFooterView.setState(XListViewFooter.STATE_NORMAL);
			}
		}
		mFooterView.setBottomMargin(height);

		// setSelection(mTotalItemCount - 1); // scroll to bottom
	}

	private void resetFooterHeight() {
		int bottomMargin = mFooterView.getBottomMargin();
		if (bottomMargin > 0) {
			mScrollBack = SCROLLBACK_FOOTER;
			mScroller.startScroll(0, bottomMargin, 0, -bottomMargin,
					SCROLL_DURATION);
			invalidate();
		}
	}

	private void startLoadMore() {
		mPullLoading = true;
		mFooterView.setState(XListViewFooter.STATE_LOADING);
		if (mListViewListener != null) {
			mListViewListener.onLoadMore();
		}
	}

	@Override
	public boolean onTouchEvent(MotionEvent ev) {
		if (mLastY == -1) {
			mLastY = ev.getRawY();
		}

		switch (ev.getAction()) {
		case MotionEvent.ACTION_DOWN:
			mLastY = ev.getRawY();
			break;
		case MotionEvent.ACTION_MOVE:
			final float deltaY = ev.getRawY() - mLastY;
			mLastY = ev.getRawY();
			if (getFirstVisiblePosition() == 0
					&& (mHeaderView.getVisiableHeight() > 0 || deltaY > 0)) {
				// the first item is showing, header has shown or pull down.
				updateHeaderHeight(deltaY / OFFSET_RADIO);
				invokeOnScrolling();
			} else if (getLastVisiblePosition() == mTotalItemCount - 1
					&& (mFooterView.getBottomMargin() > 0 || deltaY < 0)) {
				// last item, already pulled up or want to pull up.
				updateFooterHeight(-deltaY / OFFSET_RADIO);
			}
			break;
		default:
			mLastY = -1; // reset
			if (getFirstVisiblePosition() == 0) {
				// invoke refresh
				if (mEnablePullRefresh
						&& mHeaderView.getVisiableHeight() > mHeaderViewHeight) {
					mPullRefreshing = true;
					mHeaderView.setState(XListViewHeader.STATE_REFRESHING);
					if (mListViewListener != null) {
						mListViewListener.onRefresh();
					}
				}
				resetHeaderHeight();
			} else if (getLastVisiblePosition() == mTotalItemCount - 1) {
				// invoke load more.
				if (mEnablePullLoad
						&& mFooterView.getBottomMargin() > PULL_LOAD_MORE_DELTA) {
					startLoadMore();
				}
				resetFooterHeight();
			}
			break;
		}
		return super.onTouchEvent(ev);
	}

	@Override
	public void computeScroll() {
		if (mScroller.computeScrollOffset()) {
			if (mScrollBack == SCROLLBACK_HEADER) {
				mHeaderView.setVisiableHeight(mScroller.getCurrY());
			} else {
				mFooterView.setBottomMargin(mScroller.getCurrY());
			}
			postInvalidate();
			invokeOnScrolling();
		}
		super.computeScroll();
	}

	@Override
	public void setOnScrollListener(OnScrollListener l) {
		mScrollListener = l;
	}

	@Override
	public void onScrollStateChanged(AbsListView view, int scrollState) {
		if (mScrollListener != null) {
			mScrollListener.onScrollStateChanged(view, scrollState);
		}
	}

	@Override
	public void onScroll(AbsListView view, int firstVisibleItem,
			int visibleItemCount, int totalItemCount) {
		// send to user's listener
		mTotalItemCount = totalItemCount;
		if (mScrollListener != null) {
			mScrollListener.onScroll(view, firstVisibleItem, visibleItemCount,
					totalItemCount);
		}
	}

	public void setXListViewListener(IXListViewListener l) {
		mListViewListener = l;
	}

	/**
	 * you can listen ListView.OnScrollListener or this one. it will invoke
	 * onXScrolling when header/footer scroll back.
	 */
	public interface OnXScrollListener extends OnScrollListener {
		public void onXScrolling(View view);
	}

	/**
	 * implements this interface to get refresh/load more event.
	 */
	public interface IXListViewListener {
		public void onRefresh();

		public void onLoadMore();
	}
}

 

 

/**
 * @file XListViewHeader.java
 * @create Apr 18, 2012 5:22:27 PM
 * @author Maxwin
 * @description XListView's header
 */
package com.curiousby.demoxlistview.xlistview;

import com.curiousby.demoxlistview.R;

import android.content.Context;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;
 

public class MsgHeader extends LinearLayout {
	private LinearLayout mContainer;
	private ProgressBar mProgressBar;
	private TextView mHintTextView;
	private int mState = STATE_NORMAL;

	public final static int STATE_NORMAL = 0;
	public final static int STATE_READY = 1;
	public final static int STATE_REFRESHING = 2;

	public MsgHeader(Context context) {
		super(context);
		initView(context);
	}

	/**
	 * @param context
	 * @param attrs
	 */
	public MsgHeader(Context context, AttributeSet attrs) {
		super(context, attrs);
		initView(context);
	}

	private void initView(Context context) {
		// 初始情况，设置下拉刷新view高度为0
		LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
				LayoutParams.FILL_PARENT, 0);
		mContainer = (LinearLayout) LayoutInflater.from(context).inflate(
				R.layout.message_header, null);
		addView(mContainer, lp);
		setGravity(Gravity.BOTTOM);

		mHintTextView = (TextView) findViewById(R.id.xlistview_header_hint_textview);
		mProgressBar = (ProgressBar) findViewById(R.id.xlistview_header_progressbar);

	}

	public void setState(int state) {
		if (state == mState)
			return;

		if (state == STATE_REFRESHING) { // 显示进度
			mProgressBar.setVisibility(View.VISIBLE);
		} else { // 显示箭头图片
			mProgressBar.setVisibility(View.INVISIBLE);
		}

		switch (state) {
		case STATE_NORMAL:
			if (mState == STATE_READY) {
			}
			if (mState == STATE_REFRESHING) {
			}
			mHintTextView.setVisibility(View.VISIBLE);
			mHintTextView.setText("显示更多消息");
			break;
		case STATE_READY:
			if (mState != STATE_READY) {
				mHintTextView.setVisibility(View.VISIBLE);
				mHintTextView.setText("释放即可显示");
			}
			break;
		case STATE_REFRESHING:
			// mHintTextView.setText(R.string.xlistview_header_hint_loading);
			mHintTextView.setVisibility(View.GONE);
			break;
		default:
		}

		mState = state;
	}

	public void setVisiableHeight(int height) {
		if (height < 0)
			height = 0;
		LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) mContainer
				.getLayoutParams();
		lp.height = height;
		mContainer.setLayoutParams(lp);
	}

	public int getVisiableHeight() {
		return mContainer.getHeight();
	}

}

 

 

 

package com.curiousby.demoxlistview.xlistview;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnGroupClickListener;

public class IphoneTreeView extends ExpandableListView implements
		OnScrollListener, OnGroupClickListener {
	public IphoneTreeView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		registerListener();
	}

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

	public IphoneTreeView(Context context) {
		super(context);
		registerListener();
	}

	/**
	 * Adapter 接口 . 列表必须实现此接口 .
	 */
	public interface IphoneTreeHeaderAdapter {
		public static final int PINNED_HEADER_GONE = 0;
		public static final int PINNED_HEADER_VISIBLE = 1;
		public static final int PINNED_HEADER_PUSHED_UP = 2;

		/**
		 * 获取 Header 的状态
		 * 
		 * @param groupPosition
		 * @param childPosition
		 * @return 
		 *         PINNED_HEADER_GONE,PINNED_HEADER_VISIBLE,PINNED_HEADER_PUSHED_UP
		 *         其中之一
		 */
		int getTreeHeaderState(int groupPosition, int childPosition);

		/**
		 * 配置 QQHeader, 让 QQHeader 知道显示的内容
		 * 
		 * @param header
		 * @param groupPosition
		 * @param childPosition
		 * @param alpha
		 */
		void configureTreeHeader(View header, int groupPosition,
				int childPosition, int alpha);

		/**
		 * 设置组按下的状态
		 * 
		 * @param groupPosition
		 * @param status
		 */
		void onHeadViewClick(int groupPosition, int status);

		/**
		 * 获取组按下的状态
		 * 
		 * @param groupPosition
		 * @return
		 */
		int getHeadViewClickStatus(int groupPosition);

	}

	private static final int MAX_ALPHA = 255;

	private IphoneTreeHeaderAdapter mAdapter;

	/**
	 * 用于在列表头显示的 View,mHeaderViewVisible 为 true 才可见
	 */
	private View mHeaderView;

	/**
	 * 列表头是否可见
	 */
	private boolean mHeaderViewVisible;

	private int mHeaderViewWidth;

	private int mHeaderViewHeight;

	public void setHeaderView(View view) {
		mHeaderView = view;
		AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
				ViewGroup.LayoutParams.MATCH_PARENT,
				ViewGroup.LayoutParams.WRAP_CONTENT);
		view.setLayoutParams(lp);

		if (mHeaderView != null) {
			setFadingEdgeLength(0);
		}

		requestLayout();
	}

	private void registerListener() {
		setOnScrollListener(this);
		setOnGroupClickListener(this);
	}

	/**
	 * 点击 HeaderView 触发的事件
	 */
	private void headerViewClick() {
		long packedPosition = getExpandableListPosition(this
				.getFirstVisiblePosition());

		int groupPosition = ExpandableListView
				.getPackedPositionGroup(packedPosition);

		if (mAdapter.getHeadViewClickStatus(groupPosition) == 1) {
			this.collapseGroup(groupPosition);
			mAdapter.onHeadViewClick(groupPosition, 0);
		} else {
			this.expandGroup(groupPosition);
			mAdapter.onHeadViewClick(groupPosition, 1);
		}

		this.setSelectedGroup(groupPosition);
	}

	private float mDownX;
	private float mDownY;

	/**
	 * 如果 HeaderView 是可见的 , 此函数用于判断是否点击了 HeaderView, 并对做相应的处理 , 因为 HeaderView
	 * 是画上去的 , 所以设置事件监听是无效的 , 只有自行控制 .
	 */
	@Override
	public boolean onTouchEvent(MotionEvent ev) {
		if (mHeaderViewVisible) {
			switch (ev.getAction()) {
			case MotionEvent.ACTION_DOWN:
				mDownX = ev.getX();
				mDownY = ev.getY();
				if (mDownX <= mHeaderViewWidth && mDownY <= mHeaderViewHeight) {
					return true;
				}
				break;
			case MotionEvent.ACTION_UP:
				float x = ev.getX();
				float y = ev.getY();
				float offsetX = Math.abs(x - mDownX);
				float offsetY = Math.abs(y - mDownY);
				// 如果 HeaderView 是可见的 , 点击在 HeaderView 内 , 那么触
				// 发 headerClick()
				if (x <= mHeaderViewWidth && y <= mHeaderViewHeight
						&& offsetX <= mHeaderViewWidth
						&& offsetY <= mHeaderViewHeight) {
					if (mHeaderView != null) {
						headerViewClick();
					}

					return true;
				}
				break;
			default:
				break;
			}
		}

		return super.onTouchEvent(ev);

	}

	@Override
	public void setAdapter(ExpandableListAdapter adapter) {
		super.setAdapter(adapter);
		mAdapter = (IphoneTreeHeaderAdapter) adapter;
	}

	/**
	 * 
	 * 点击了 Group 触发的事件 , 要根据根据当前点击 Group 的状态来
	 */
	@Override
	public boolean onGroupClick(ExpandableListView parent, View v,
			int groupPosition, long id) {
		if (mAdapter.getHeadViewClickStatus(groupPosition) == 0) {
			mAdapter.onHeadViewClick(groupPosition, 1);
			parent.expandGroup(groupPosition);
			parent.setSelectedGroup(groupPosition);

		} else if (mAdapter.getHeadViewClickStatus(groupPosition) == 1) {
			mAdapter.onHeadViewClick(groupPosition, 0);
			parent.collapseGroup(groupPosition);
		}

		// 返回 true 才可以弹回第一行 , 不知道为什么
		return true;

	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
		if (mHeaderView != null) {
			measureChild(mHeaderView, widthMeasureSpec, heightMeasureSpec);
			mHeaderViewWidth = mHeaderView.getMeasuredWidth();
			mHeaderViewHeight = mHeaderView.getMeasuredHeight();
		}
	}

	private int mOldState = -1;

	@Override
	protected void onLayout(boolean changed, int left, int top, int right,
			int bottom) {
		super.onLayout(changed, left, top, right, bottom);
		final long flatPostion = getExpandableListPosition(getFirstVisiblePosition());
		final int groupPos = ExpandableListView
				.getPackedPositionGroup(flatPostion);
		final int childPos = ExpandableListView
				.getPackedPositionChild(flatPostion);
		int state = mAdapter.getTreeHeaderState(groupPos, childPos);
		if (mHeaderView != null && mAdapter != null && state != mOldState) {
			mOldState = state;
			mHeaderView.layout(0, 0, mHeaderViewWidth, mHeaderViewHeight);
		}

		configureHeaderView(groupPos, childPos);
	}

	public void configureHeaderView(int groupPosition, int childPosition) {
		if (mHeaderView == null || mAdapter == null
				|| ((ExpandableListAdapter) mAdapter).getGroupCount() == 0) {
			return;
		}

		int state = mAdapter.getTreeHeaderState(groupPosition, childPosition);

		switch (state) {
		case IphoneTreeHeaderAdapter.PINNED_HEADER_GONE: {
			mHeaderViewVisible = false;
			break;
		}

		case IphoneTreeHeaderAdapter.PINNED_HEADER_VISIBLE: {
			mAdapter.configureTreeHeader(mHeaderView, groupPosition,
					childPosition, MAX_ALPHA);

			if (mHeaderView.getTop() != 0) {
				mHeaderView.layout(0, 0, mHeaderViewWidth, mHeaderViewHeight);
			}

			mHeaderViewVisible = true;

			break;
		}

		case IphoneTreeHeaderAdapter.PINNED_HEADER_PUSHED_UP: {
			View firstView = getChildAt(0);
			int bottom = firstView.getBottom();

			// intitemHeight = firstView.getHeight();
			int headerHeight = mHeaderView.getHeight();

			int y;

			int alpha;

			if (bottom < headerHeight) {
				y = (bottom - headerHeight);
				alpha = MAX_ALPHA * (headerHeight + y) / headerHeight;
			} else {
				y = 0;
				alpha = MAX_ALPHA;
			}

			mAdapter.configureTreeHeader(mHeaderView, groupPosition,
					childPosition, alpha);

			if (mHeaderView.getTop() != y) {
				mHeaderView.layout(0, y, mHeaderViewWidth, mHeaderViewHeight
						+ y);
			}

			mHeaderViewVisible = true;
			break;
		}
		}
	}

	@Override
	/**
	 * 列表界面更新时调用该方法(如滚动时)
	 */
	protected void dispatchDraw(Canvas canvas) {
		super.dispatchDraw(canvas);
		if (mHeaderViewVisible) {
			// 分组栏是直接绘制到界面中，而不是加入到ViewGroup中
			drawChild(canvas, mHeaderView, getDrawingTime());
		}
	}

	@Override
	public void onScroll(AbsListView view, int firstVisibleItem,
			int visibleItemCount, int totalItemCount) {
		final long flatPos = getExpandableListPosition(firstVisibleItem);
		int groupPosition = ExpandableListView.getPackedPositionGroup(flatPos);
		int childPosition = ExpandableListView.getPackedPositionChild(flatPos);

		configureHeaderView(groupPosition, childPosition);
	}

	@Override
	public void onScrollStateChanged(AbsListView view, int scrollState) {
	}
}

 

 

 

 

 

 

 

 

 

 

捐助开发者

在兴趣的驱动下,写一个免费的东西，有欣喜，也还有汗水，希望你喜欢我的作品，同时也能支持一下。 当然，有钱捧个钱场（右上角的爱心标志，支持支付宝和PayPal捐助），没钱捧个人场，谢谢各位。

 
 
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