大家都应该使用过QQ吧,他的消息中可以滑动删除功能,我觉得比较有意思,所以模仿写了一个,并且修改了其滑动算法.我先贴几个简单示范图吧
其实主要用的是算法以及对ListView的把控.
一下是适配器的类
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package
com.fay.adapter;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.content.Context;
import android.graphics.Point;
import
android.util.Log;
import
android.view.LayoutInflater;
import
android.view.MotionEvent;
import
android.view.View;
import
android.view.View.OnClickListener;
import
android.view.View.OnTouchListener;
import
android.view.ViewGroup;
import
android.view.animation.Animation;
import
android.view.animation.Animation.AnimationListener;
import
android.view.animation.AnimationUtils;
import
android.widget.BaseAdapter;
import
android.widget.ImageView;
import
android.widget.LinearLayout;
import
android.widget.ListView;
import
android.widget.TextView;
import
android.widget.Toast;
import
com.fay.activity.MessageActivity;
import
com.fay.message.R;
/** * the adapter of the ListView
* @author Fay
* {@link 1940125001@qq.com}
*/
public
class ListMessageAdapter extends
BaseAdapter {
private
String TAG = "ListMessageAdapter";
private
Context context = null;
private
Holder holder = null;
private
LayoutInflater inflater = null;
// the last position clicked
private
int mLastPosition = -1;
// check whether a touch action is finish
private
boolean loadFinish = false;
// the position of click and move, start and end point
private
Point startPoint, endPoint;
// the animation of removing the item
private
Animation animation = null;
// the children item is common
private
final int TYPE_ITEM = 0;
// the children item is searching
private
final int TYPE_SEARCH = 1;
// the count of children item‘s type
private
final int TYPE_COUNT = TYPE_SEARCH + 1;
// data container
private
List<Map<String, Object>> list = new
ArrayList<Map<String, Object>>();
public
ListMessageAdapter(Context context) {
this.context = context;
this.inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
this.startPoint = new
Point();
this.endPoint = new
Point();
animation = AnimationUtils.loadAnimation(context, R.anim.push_out);
}
public
void setData(ArrayList<Map<String, Object>> list) {
this.list = list;
notifyDataSetChanged();
}
public
void setDataTemp(List<Map<String, Object>> list) {
this.list = list;
notifyDataSetChanged();
}
public
void clearData() {
list.clear();
notifyDataSetChanged();
}
public
int getCount() {
return
list.size();
}
@Override
public
Object getItem(int
position) {
return
list.get(position);
}
@Override
public
long getItemId(int
position) {
return
position;
}
@Override
public
int getItemViewType(int
position) {
return
position == 0
? TYPE_SEARCH : TYPE_ITEM;
}
@Override
public
int getViewTypeCount() {
return
TYPE_COUNT;
}
@Override
public
View getView(int
position, View convertView, ViewGroup parent) {
int
type = getItemViewType(position);
if
(null == convertView) {
holder = new
Holder();
switch
(type) {
case
TYPE_SEARCH:
convertView = inflater.inflate(R.layout.search, null);
holder.searchview = (LinearLayout) convertView
.findViewById(R.id.search);
break;
case
TYPE_ITEM:
convertView = inflater
.inflate(R.layout.list_item_message, null);
holder.linearlayout = (LinearLayout) convertView
.findViewById(R.id.message_linear);
holder.content = (TextView) convertView
.findViewById(R.id.message_detail);
holder.delete = (TextView) convertView
.findViewById(R.id.message_delete);
break;
}
convertView.setTag(holder);
} else
{
holder = (Holder) convertView.getTag();
}
final
int chickPosition = position;
switch
(type) {
case
TYPE_SEARCH:
// hidden the top view
holder.searchview.setOnClickListener(new
OnClickListener() {
@Override
public
void onClick(View v) {
MessageActivity.hiddenTop();
}
});
break;
case
TYPE_ITEM:
holder.content.setText("消息"
+ list.get(chickPosition).get("index") + ":你好哦，我想你咯");
final
int finalPosition = position;
if
(position == mLastPosition) {
holder.delete.setVisibility(View.VISIBLE);
} else
{
holder.delete.setVisibility(View.GONE);
}
// 删除
final
View view = holder.linearlayout;
holder.delete.setOnClickListener(new
OnClickListener() {
@Override
public
void onClick(View v) {
view.startAnimation(animation);
animation.setAnimationListener(new
AnimationListener() {
@Override
public
void onAnimationStart(Animation arg0) {
}
@Override
public
void onAnimationRepeat(Animation arg0) {
}
@Override
public
void onAnimationEnd(Animation arg0) {
list.remove(chickPosition);
mLastPosition = -1;
notifyDataSetChanged();
}
});
}
});
holder.linearlayout.setOnTouchListener(new
OnTouchListener() {
public
boolean onTouch(View v, MotionEvent event) {
switch
(event.getAction()) {
case
MotionEvent.ACTION_DOWN:
loadFinish = false;
startPoint.set((int) event.getX(), (int) event.getY());
break;
case
MotionEvent.ACTION_MOVE:
endPoint.set((int) event.getX(), (int) event.getY());
if
(Math.abs(endPoint.x - startPoint.x) > 30) {
if
(loadFinish == false) {
loadFinish = true;
if
(finalPosition != mLastPosition) {
mLastPosition = finalPosition;
} else
{
mLastPosition = -1;
}
notifyDataSetChanged();
} else
{
return
true;
}
return
true;
}
if
(Math.abs(endPoint.y - startPoint.y) > 30) {
return
false;
}
break;
case
MotionEvent.ACTION_UP:
break;
}
return
false;
}
});
holder.linearlayout.setOnClickListener(new
OnClickListener() {
@Override
public
void onClick(View v) {
if
(mLastPosition != -1) {
mLastPosition = -1;
notifyDataSetChanged();
} else
{
Toast.makeText(context, "您点击了 -> "
+ chickPosition, 2000).show();
}
}
});
break;
}
return
convertView;
}
private
class Holder {
TextView content;
TextView delete;
LinearLayout linearlayout;
LinearLayout searchview;
}
} |
多余的我不说了,你们直接看源码吧.
源码下载地址:http://files.cnblogs.com/yinweiliang/Message.zip