高仿 QQ 侧滑删除 Item 的效果

<span style="font-size:24px;"><span style="white-space:pre">	</span>最近公司在做 一个飞信的一个功能！消息列表和QQ 的类似。</span>

图：

        其是很简单，之前在github 搜索的 sliderList, sliderLayout.我都用不了。因为代码导入到 Eclispe 中无法使用。 这是网址： http://blog.csdn.net/phj_981805903/article/details/21394241

        

        最后一位大神分享的代码：他的思路很简单，就是隐藏一个 删除的tab. 在出发时间的时候 显示 删除！ 

代码：

主要就是  

sliderView 自定义的View 实现滑动的效果

ListViewCompat 自定义的listView   调用sliderVIew 的滑动！

mainActivity

<span style="font-size:18px;">package com.example.androidmenutoabhost;
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.Scroller;
import android.widget.TextView;

import com.example.slidingview.R;

public class SlideView extends LinearLayout {

    private static final String TAG = "SlideView";

    private Context mContext;
    private LinearLayout mViewContent;
    private RelativeLayout mHolder;
    private Scroller mScroller;
    private OnSlideListener mOnSlideListener;

    private int mHolderWidth = 120;

    private int mLastX = 0;
    private int mLastY = 0;
    private static final int TAN = 2;

    public interface OnSlideListener {
        public static final int SLIDE_STATUS_OFF = 0;
        public static final int SLIDE_STATUS_START_SCROLL = 1;
        public static final int SLIDE_STATUS_ON = 2;

        /**
         * @param view current SlideView
         * @param status SLIDE_STATUS_ON or SLIDE_STATUS_OFF
         */
        public void onSlide(View view, int status);
    }

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

    public SlideView(Context context, AttributeSet attrs) {
        super(context, attrs);
        initView();
    }

    private void initView() {
        mContext = getContext();
        mScroller = new Scroller(mContext);

        setOrientation(LinearLayout.HORIZONTAL);
        View.inflate(mContext, R.layout.slide_view_merge, this);
        mViewContent = (LinearLayout) findViewById(R.id.view_content);
        mHolderWidth = Math.round(TypedValue.applyDimension(
                TypedValue.COMPLEX_UNIT_DIP, mHolderWidth, getResources()
                        .getDisplayMetrics()));
    }

    public void setButtonText(CharSequence text) {
        ((TextView)findViewById(R.id.delete)).setText(text);
    }

    public void setContentView(View view) {
        mViewContent.addView(view);
    }

    public void setOnSlideListener(OnSlideListener onSlideListener) {
        mOnSlideListener = onSlideListener;
    }

    public void shrink() {
        if (getScrollX() != 0) {
            this.smoothScrollTo(0, 0);
        }
    }

    public void onRequireTouchEvent(MotionEvent event) {
        int x = (int) event.getX();
        int y = (int) event.getY();
        int scrollX = getScrollX();
        Log.d(TAG, "x=" + x + "  y=" + y);

        switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN: {
            if (!mScroller.isFinished()) {
                mScroller.abortAnimation();
            }
            if (mOnSlideListener != null) {
                mOnSlideListener.onSlide(this,
                        OnSlideListener.SLIDE_STATUS_START_SCROLL);
            }
            break;
        }
        case MotionEvent.ACTION_MOVE: {
            int deltaX = x - mLastX;
            int deltaY = y - mLastY;
            if (Math.abs(deltaX) < Math.abs(deltaY) * TAN) {
                break;
            }

            int newScrollX = scrollX - deltaX;
            if (deltaX != 0) {
                if (newScrollX < 0) {
                    newScrollX = 0;
                } else if (newScrollX > mHolderWidth) {
                    newScrollX = mHolderWidth;
                }
                this.scrollTo(newScrollX, 0);
            }
            break;
        }
        case MotionEvent.ACTION_UP: {
            int newScrollX = 0;
            if (scrollX - mHolderWidth * 0.75 > 0) {
                newScrollX = mHolderWidth;
            }
            this.smoothScrollTo(newScrollX, 0);
            if (mOnSlideListener != null) {
                mOnSlideListener.onSlide(this,
                        newScrollX == 0 ? OnSlideListener.SLIDE_STATUS_OFF
                                : OnSlideListener.SLIDE_STATUS_ON);
            }
            break;
        }
        default:
            break;
        }

        mLastX = x;
        mLastY = y;
    }

    private void smoothScrollTo(int destX, int destY) {
        // 缓慢滚动到指定位置
        int scrollX = getScrollX();
        int delta = destX - scrollX;
        mScroller.startScroll(scrollX, 0, delta, 0, Math.abs(delta) * 3);
        invalidate();
    }

    @Override
    public void computeScroll() {
        if (mScroller.computeScrollOffset()) {
            scrollTo(mScroller.getCurrX(), mScroller.getCurrY());
            postInvalidate();
        }
    }

}</span>

<span style="font-size:18px;">package com.example.androidmenutoabhost;

import com.example.androidmenutoabhost.ActivityListDelte.MessageItem;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ListView;

public class ListViewCompat extends ListView {

    private static final String TAG = "ListViewCompat";

    private SlideView mFocusedItemView;

    public ListViewCompat(Context context) {
        super(context);
    }

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

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

    public void shrinkListItem(int position) {
        View item = getChildAt(position);

        if (item != null) {
            try {
                ((SlideView) item).shrink();
            } catch (ClassCastException e) {
                e.printStackTrace();
            }
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN: {
            int x = (int) event.getX();
            int y = (int) event.getY();
            int position = pointToPosition(x, y);
            Log.e(TAG, "postion=" + position);
            if (position != INVALID_POSITION) {
                MessageItem data = (MessageItem) getItemAtPosition(position);
                mFocusedItemView = data.slideView;
                Log.e(TAG, "FocusedItemView=" + mFocusedItemView);
            }
        }
        default:
            break;
        }

        if (mFocusedItemView != null) {
            mFocusedItemView.onRequireTouchEvent(event);
        }

        return super.onTouchEvent(event);
    }

}
</span>

<span style="font-size:18px;">package com.example.androidmenutoabhost;

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

import com.example.androidmenutoabhost.SlideView.OnSlideListener;
import com.example.slidingview.R;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class ActivityListDelte extends Activity implements OnClickListener,OnItemClickListener{

    private static final String TAG = "MainActivity";

    private ListViewCompat mListView;

    private List<MessageItem> mMessageItems = new ArrayList<ActivityListDelte.MessageItem>();

    private SlideView mLastSlideViewWithStatusOn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_list_delete);

        initView();
        
    }

    private void initView() {
    	
        mListView = (ListViewCompat) findViewById(R.id.list);

        for (int i = 0; i < 20; i++) {
            MessageItem item = new MessageItem();
            if (i % 20 == 0) {
                item.iconRes = R.drawable.wechat_icon;
                item.title = "腾讯新闻";
                item.msg = "青岛爆炸满月：大量鱼虾死亡";
                item.time = "晚上18:18";
            } else {
                item.iconRes = R.drawable.wechat_icon;
                item.title = "微信团队";
                item.msg = "欢迎你使用微信";
                item.time = "12月18日";
            }
            mMessageItems.add(item);
        }
        
        mListView.setAdapter(new SlideAdapter());
        mListView.setOnItemClickListener(this);
    }

    private class SlideAdapter extends BaseAdapter implements OnSlideListener{

        private LayoutInflater mInflater;

        SlideAdapter() {
            super();
            mInflater = getLayoutInflater();
        }

        @Override
        public int getCount() {
            return mMessageItems.size();
        }

        @Override
        public Object getItem(int position) {
            return mMessageItems.get(position);
        }

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder;
            SlideView slideView = (SlideView) convertView;
            
            if (slideView == null) {
                View itemView = mInflater.inflate(R.layout.list_item, null);

                slideView = new SlideView(ActivityListDelte.this);
                slideView.setContentView(itemView);

                holder = new ViewHolder(slideView);
                slideView.setOnSlideListener(this);
                slideView.setTag(holder);
            } else {
                holder = (ViewHolder) slideView.getTag();
            }
            
            //回退的效果
            MessageItem item = mMessageItems.get(position);
            item.slideView = slideView;
            item.slideView.shrink();
            
            holder.icon.setImageResource(item.iconRes);
            holder.title.setText(item.title);
            holder.msg.setText(item.msg);
            holder.time.setText(item.time);
            holder.deleteHolder.setOnClickListener(ActivityListDelte.this);

            return slideView;
        }

        @Override
        public void onSlide(View view, int status) {
            if (mLastSlideViewWithStatusOn != null && mLastSlideViewWithStatusOn != view) {
                mLastSlideViewWithStatusOn.shrink();
            }

            if (status == SLIDE_STATUS_ON) {
                mLastSlideViewWithStatusOn = (SlideView) view;
            }
        }

    }

    public class MessageItem {
        public int iconRes;
        public String title;
        public String msg;
        public String time;
        public SlideView slideView;
    }

    private static class ViewHolder {
        public ImageView icon;
        public TextView title;
        public TextView msg;
        public TextView time;
        public ViewGroup deleteHolder;

        ViewHolder(View view) {
            icon = (ImageView) view.findViewById(R.id.icon);
            title = (TextView) view.findViewById(R.id.title);
            msg = (TextView) view.findViewById(R.id.msg);
            time = (TextView) view.findViewById(R.id.time);
            deleteHolder = (ViewGroup)view.findViewById(R.id.holder);
        }
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        Log.e(TAG, "onItemClick position=" + position);
    }



    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.holder) {
            Log.e(TAG, "onClick v=" + v);
            Toast.makeText(this, "delete", Toast.LENGTH_SHORT).show();
            
        }
    }


}
</span>

<span style="font-size:18px;">
</span>

项目下载的网址：

http://download.csdn.net/detail/love_javc_you/8533495