【android】使用checkedTextView形成自定义ListView（续）

前面的已经介绍了如何将check选中，但是很不尽如人意的是，每次listView都会调用getView方法来刷新页面，所以导致之前选中的check会在调用getView之后会被取消。
通过：http://blog.csdn.net/whucyl/article/details/7341133
上面的提示对部件进行了重写。
使用一个select的方法，监听选中是否，然后加入一个hashmap，用来保存每次用户选中的状态，每次getView的查看此状态即可。
一下是代码：
MyAdapter方法：

package com.duduli.li;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.content.Context;
import android.database.Cursor;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.CheckedTextView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;

public class MyAdapter extends SimpleCursorAdapter{
private List list = new ArrayList();
private HashMap isSelected = null;
public String s[];
private List> data;
private LayoutInflater layoutInflater;
private List delNumber = new ArrayList();
@SuppressWarnings("unused")
private Context context;
public MyAdapter(Context context, int layout, Cursor c,
String[] from, int[] to) {
super(context, layout, c, from, to);
this.context = context;
this.data = getData();
this.layoutInflater = LayoutInflater.from(context);
isSelected = new HashMap();
}


@Override
public int getCount() {
// TODO Auto-generated method stub
return super.getCount();
}

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

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


@SuppressWarnings("unused")
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub




Compan cp = null;
if(cp == null){
cp = new Compan();
convertView = layoutInflater.inflate(R.layout.list, null);
cp.id = (TextView) convertView.findViewById(R.id._id);
cp.ctv = (CheckedTextView) convertView.findViewById(R.id.checkText);


convertView.setTag(cp);
}else{
cp = (Compan) convertView.getTag();
}
cp.id.setText((CharSequence) data.get(position).get("_id"));
cp.ctv.setText((CharSequence) data.get(position).get("Number"));
// [b]此处即为状态保存的方法！[/b]
Boolean b = isSelected.get(position);
if(null == b){
b = false;
}

if (convertView instanceof ViewGroup) {
ViewGroup g = (ViewGroup) convertView;
for (int i = 0; i < g.getChildCount(); i++) {
View v = g.getChildAt(i);
if (v instanceof CheckedTextView) {
((CheckedTextView) v).setChecked(b);
break;
}
}
}


return convertView;
}




public List> getData() {
List> list = new ArrayList>();

while (getCursor().moveToNext()) {
Map map = new HashMap();
// System.out.println("ID: "+getCursor().getString(0));
map.put("_id", getCursor().getString(0));
// System.out.println("NAME: "+getCursor().getString(1));
map.put("Number", getCursor().getString(1));
list.add(map);
}

return list;
}
// 选中加入hashmap
public void select(int postion, boolean isChecked) {
isSelected.put(postion, isChecked);
}

}

package com.duduli.li; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import android.content.Context; import android.database.Cursor; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.CheckedTextView; import android.widget.SimpleCursorAdapter; import android.widget.TextView; public class MyAdapter extends SimpleCursorAdapter{ private List list = new ArrayList(); private HashMap isSelected = null; public String s[]; private List> data; private LayoutInflater layoutInflater; private List delNumber = new ArrayList(); @SuppressWarnings("unused") private Context context; public MyAdapter(Context context, int layout, Cursor c, String[] from, int[] to) { super(context, layout, c, from, to); this.context = context; this.data = getData(); this.layoutInflater = LayoutInflater.from(context); isSelected = new HashMap(); } @Override public int getCount() { // TODO Auto-generated method stub return super.getCount(); } @Override public Object getItem(int position) { // TODO Auto-generated method stub return super.getItem(position); } @Override public long getItemId(int position) { // TODO Auto-generated method stub return super.getItemId(position); } @SuppressWarnings("unused") @Override public View getView(final int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub Compan cp = null; if(cp == null){ cp = new Compan(); convertView = layoutInflater.inflate(R.layout.list, null); cp.id = (TextView) convertView.findViewById(R.id._id); cp.ctv = (CheckedTextView) convertView.findViewById(R.id.checkText); convertView.setTag(cp); }else{ cp = (Compan) convertView.getTag(); } cp.id.setText((CharSequence) data.get(position).get("_id")); cp.ctv.setText((CharSequence) data.get(position).get("Number")); // [b]此处即为状态保存的方法！[/b] Boolean b = isSelected.get(position); if(null == b){ b = false; } if (convertView instanceof ViewGroup) { ViewGroup g = (ViewGroup) convertView; for (int i = 0; i < g.getChildCount(); i++) { View v = g.getChildAt(i); if (v instanceof CheckedTextView) { ((CheckedTextView) v).setChecked(b); break; } } } return convertView; } public List> getData() { List> list = new ArrayList>(); while (getCursor().moveToNext()) { Map map = new HashMap(); // System.out.println("ID: "+getCursor().getString(0)); map.put("_id", getCursor().getString(0)); // System.out.println("NAME: "+getCursor().getString(1)); map.put("Number", getCursor().getString(1)); list.add(map); } return list; } // 选中加入hashmap public void select(int postion, boolean isChecked) { isSelected.put(postion, isChecked); } }

然后Activity：

package com.duduli.li;

import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.CheckedTextView;
import android.widget.ListView;

import com.duduli.db.AllowCallDAO;

/**
* This example shows how to use choice mode on a list. This list is
* in CHOICE_MODE_MULTIPLE mode, which means the items behave like
* checkboxes.
*/
public class CallComingTest2Activity extends ListActivity {
private CheckedTextView multiple;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
AllowCallDAO dao = new AllowCallDAO(this);
MyAdapter adapter = new MyAdapter(this, R.layout.list, dao.show()
, new String[]{"_id","phonenr"}, new int[]{R.id._id,R.id.checkText});




final ListView listView = getListView();

listView.setItemsCanFocus(false);
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
setListAdapter(adapter);


}


@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
System.out.println(position);


multiple = (CheckedTextView)v.findViewById(R.id.checkText);
if (multiple != null) {
multiple.toggle();
((MyAdapter) l.getAdapter()).select(position, multiple.isChecked());
}


if(multiple.isChecked()){
// getListView().getItemAtPosition(position);
System.out.println("check");
}else{
System.out.println("not check");
}

}





}

package com.duduli.li; import android.app.ListActivity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.CheckedTextView; import android.widget.ListView; import com.duduli.db.AllowCallDAO; /** * This example shows how to use choice mode on a list. This list is * in CHOICE_MODE_MULTIPLE mode, which means the items behave like * checkboxes. */ public class CallComingTest2Activity extends ListActivity { private CheckedTextView multiple; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); AllowCallDAO dao = new AllowCallDAO(this); MyAdapter adapter = new MyAdapter(this, R.layout.list, dao.show() , new String[]{"_id","phonenr"}, new int[]{R.id._id,R.id.checkText}); final ListView listView = getListView(); listView.setItemsCanFocus(false); listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); setListAdapter(adapter); } @Override protected void onListItemClick(ListView l, View v, int position, long id) { // TODO Auto-generated method stub System.out.println(position); multiple = (CheckedTextView)v.findViewById(R.id.checkText); if (multiple != null) { multiple.toggle(); ((MyAdapter) l.getAdapter()).select(position, multiple.isChecked()); } if(multiple.isChecked()){ // getListView().getItemAtPosition(position); System.out.println("check"); }else{ System.out.println("not check"); } } }