ListView 实现带有Filpper效果的左右滑动删除 Item

ListView 实现带有Filpper效果的左右滑动删除 Item 的实现最主要的方法还是 对 Listview 的继承重写 。然后是在删除过程中添加 TranslateAnimation 滑动事件。

<span style="font-size:14px;">public class FilpperActivity extends Activity {
private FilpperListvew flipperListView;
private MyAdapter adapter ;
private List<String> items;
private int width;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_filpper);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
width = dm.widthPixels;
flipperListView = (FilpperListvew) findViewById(R.id.filpperlistview);
items = new ArrayList<String>();
for(int i=0;i<15;i++){
items.add("item---->"+i);
}
adapter = new MyAdapter(this, items);
flipperListView.setAdapter(adapter);
//自定义的接口
flipperListView.setFilpperDeleteListener(new FilpperDeleteListener() {
@Override
public void filpperDelete(float xPosition,float yPosition) {
//listview中要有item，否则返回
if(flipperListView.getChildCount() == 0)
return ;
//根据坐标获得滑动删除的item的index
final int index =  flipperListView.pointToPosition((int)xPosition, (int)yPosition);
//一下两步是获得该条目在屏幕显示中的相对位置，直接根据index删除会空指針异常。因为listview中的child只有当前在屏幕中显示的才不会为空
int firstVisiblePostion = flipperListView.getFirstVisiblePosition();
View view = flipperListView.getChildAt(index - firstVisiblePostion);

<span style="color:#ff0000;">TranslateAnimation tranAnimation = new TranslateAnimation(0,width,0,0);
tranAnimation.setDuration(500);
tranAnimation.setFillAfter(true);
view.startAnimation(tranAnimation);</span>
//当动画播放完毕后，删除。否则不会出现动画效果（自己试验的）。
tranAnimation.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub

}

@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub

}

@Override
public void onAnimationEnd(Animation animation) {
//删除一个item
items.remove(index);
adapter.notifyDataSetChanged();
}
});

}
});
}

}
</span>

重写的 ListView ：

<span style="font-size:14px;">package com.example.filpperdeletelist;

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

public class FilpperListvew extends ListView {
private float myLastX = -1;
private float myLastY = -1;
private boolean delete = false;
//自定义的滑动删除监听
private FilpperDeleteListener filpperDeleterListener;

public FilpperListvew(Context context) {
super(context);
// TODO Auto-generated constructor stub
}

public FilpperListvew(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
}

@Override
public boolean onTouchEvent(MotionEvent ev) {
// TODO Auto-generated method stub
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
// 获得第一个点的x坐标
myLastX = ev.getX(0);
myLastY = ev.getY(0);
break;

case MotionEvent.ACTION_MOVE:
// 得到最后一个点的坐标
float deltaX = ev.getX(ev.getPointerCount() - 1) - myLastX;
float deltaY = Math.abs(ev.getY(ev.getPointerCount() - 1) - myLastY);
// 可以滑动删除的条件：横向滑动大于100，竖直差小于50
if (deltaX > 100.0 && deltaY < 50) {
delete = true;
}
break;

case MotionEvent.ACTION_UP:
if (delete && filpperDeleterListener != null) {
filpperDeleterListener.filpperDelete(myLastX,myLastY);
}
reset();
break;
}
return super.onTouchEvent(ev);
}

public void reset(){
delete = false ;
myLastX = -1 ;
myLastY = -1 ;
}

public void setFilpperDeleteListener(FilpperDeleteListener f) {
filpperDeleterListener = f;
}

//自定义的接口
public interface FilpperDeleteListener {
public void filpperDelete(float xPosition,float yPosition);
}

}
</span>

适配器代码：

<span style="font-size:14px;">package com.example.filpperdeletelist;

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 MyAdapter extends BaseAdapter {
private List<String> list ;
private Context context ;
public MyAdapter(Context context,List<String> list){
this.context = context ;
this.list = list;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return list.size();
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return list.get(position);
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
convertView = LayoutInflater.from(context).inflate(R.layout.lv_item, null);
TextView text = (TextView)convertView.findViewById(R.id.tv);
text.setText(list.get(position));
return convertView;
}

}
</span>

下载地址：
http://download.csdn.net/detail/jia635/7651981