其實主要用的是算法以及對ListView的把控.
一下是適配器的類
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
[email protected]}
*/
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);
}
// 刪除
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, "您點擊了 -> " + chickPosition, 2000).show();
}
}
});
break;
}
return convertView;
}
private class Holder {
TextView content;
TextView delete;
LinearLayout linearlayout;
LinearLayout searchview;
}
}
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