| package com.example.zimusortlistview; import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast; /**
* @author 彭嚮明
* 在listview中加載多個佈局
* 以城市列表爲例,保證cityLetter和cityName中沒有相同的元素，且letter中沒有相同的元素
*/
public class MainActivity extends Activity implements OnItemClickListener{ String[] letter={"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"};
String[] cityLetter={"C","B","H","G","W","C","S","S","C","W","H","Z","C","D","N","L","Q","S","S"
,"L","N","H","X","H","S","Z","G","N","J","T","S","X","A"};
String[] cityName={"長沙","北京","杭州","廣州","武漢","重慶","上海","深圳","長春","烏魯木齊","哈爾濱","鄭州","成都","大連","南昌","蘭州","齊齊哈爾","汕頭","蘇州"
,"拉薩","南京","呼和浩特","廈門","合肥","瀋陽","張家界","貴州","寧夏","濟南","天津","石家莊","西安","澳門"};
List<String> letterToCity=new ArrayList<String>();
int count;
ListView lv;
ListView lv1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String str="";
for(int i=0;i<letter.length;i++){
str=letter[i];
boolean isAddLetter=false;
for(int j=0;j<cityLetter.length;j++){
if(str.equals(cityLetter[j])){
if(!isAddLetter){
letterToCity.add(str);
isAddLetter=true;
}
letterToCity.add(cityName[j]);
}
}
}
lv=(ListView)findViewById(R.id.listView1);
lv.setAdapter(new MyAdapter());
lv.setOnItemClickListener(this);
lv1=(ListView)findViewById(R.id.listView2);
lv1.setAdapter(new MyAdapter1());
lv1.setOnItemClickListener(this);
}
class MyAdapter1 extends BaseAdapter{
@Override
public int getCount() {
// TODO Auto-generated method stub
return letter.length;
} @Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return letter[position];
} @Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
} @Override
public View getView(int position, View convertView, ViewGroup parent) {
View view=LayoutInflater.from(MainActivity.this).inflate(R.layout.letter_list, null);
TextView tv=(TextView)view.findViewById(R.id.letterListTextView);
tv.setText(letter[position]);
return view;
}
}
class MyAdapter extends BaseAdapter{ final static int TYPE_1=1;
final static int TYPE_2=2;
@Override
public int getCount() {
// TODO Auto-generated method stub
return letterToCity.size();
} @Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return letterToCity.get(position);
} @Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public int getItemViewType(int position) {
for(int i=0;i<letter.length;i++){
if(letterToCity.get(position).equals(letter[i])){
return TYPE_1;
}
}
return TYPE_2;
}
@Override
public int getViewTypeCount() {
return 3;
} @Override
public View getView(int position, View convertView, ViewGroup parent) {
/**
* 即便convertView緩存了一些佈局，可是在重構時，根本不知道怎麼樣去讓convertView返回你所須要的佈局，這時你需
* 要讓adapter知道我當前有哪些佈局，我重構Item時的佈局選取規則，好讓convertView能返回你須要的佈局。
* 須要重寫如下兩個函數
* @Override
* public int getItemViewType(int position) {}這個函數獲取在getView中建立的視圖的類型
* @Override
* public int getViewTypeCount() {}返回在getView中建立視圖類型的數量
* 至於這兩個方法的詳細用處，本身看api便可
*/
ViewHolder1 vh1=null;
ViewHolder2 vh2=null;
int type=getItemViewType(position);
if(convertView==null){
switch (type) {
case TYPE_1:
convertView=LayoutInflater.from(MainActivity.this).inflate(R.layout.letter, null);
vh1=new ViewHolder1();
vh1.tv=(TextView)convertView.findViewById(R.id.letterTextView);
convertView.setTag(vh1);
break;
case TYPE_2:
convertView=LayoutInflater.from(MainActivity.this).inflate(R.layout.city, null);
vh2=new ViewHolder2();
vh2.tv=(TextView)convertView.findViewById(R.id.cityTextView);
convertView.setTag(vh2);
break;
default:
break;
}
}else{
switch (type) {
case TYPE_1:
vh1=(ViewHolder1)convertView.getTag();
break;
case TYPE_2:
vh2=(ViewHolder2)convertView.getTag();
break;
default:
break;
}
}
switch (type) {
case TYPE_1:
vh1.tv.setText(letterToCity.get(position));
break;
case TYPE_2:
vh2.tv.setText(letterToCity.get(position));
break;
default:
break;
}
return convertView;
//此方法不可取，刷新時view會刷新
// boolean isLetter=false;
// for(int i=0;i<letter.length;i++){
// if(letterToCity.get(position).equals(letter[i])){
// isLetter=true;
// break;
// }
// }
// ViewHolder vh=null;
// if(convertView==null){
// vh=new ViewHolder();
// if(isLetter){
// convertView=LayoutInflater.from(MainActivity.this).inflate(R.layout.letter, null);
// vh.tv=(TextView)convertView.findViewById(R.id.letterTextView);
// }else{
// convertView=LayoutInflater.from(MainActivity.this).inflate(R.layout.city, null);
// vh.tv=(TextView)convertView.findViewById(R.id.cityTextView);
// }
// convertView.setTag(vh);
// }else{
// vh = (ViewHolder) convertView.getTag();
// }
// vh.tv.setText(letterToCity.get(position));
// return convertView;
//城市列表，修改佈局
// boolean isLetter=false;
// for(int i=0;i<letter.length;i++){
// if(letterToCity.get(position).equals(letter[i])){
// isLetter=true;
// break;
// }
// }
// View view;
// ViewHolder vh;
// if(convertView==null){
// view=LayoutInflater.from(MainActivity.this).inflate(R.layout.letter_city, null);
// vh=new ViewHolder();
// vh.tv=(TextView)view.findViewById(R.id.letterTextView);
// vh.ll=(LinearLayout)view.findViewById(R.id.ll);
// convertView=view;
// convertView.setTag(vh);
// }else{
// view=(View)convertView;
// vh=(ViewHolder)convertView.getTag();
// }
// vh.tv.setText(letterToCity.get(position));
// if(isLetter){
// vh.ll.setBackgroundColor(Color.LTGRAY);
// vh.tv.setPadding(5, 5, vh.tv.getPaddingRight(), 5);
// }else{
// vh.ll.setBackgroundColor(Color.WHITE);
// vh.tv.setPadding(10, 10, vh.tv.getPaddingRight(), 10);
// }
// return view;
}
} @Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
switch (parent.getId()) {
case R.id.listView1:
boolean isLetter=false;
for(int i=0;i<letter.length;i++){
if(letter[i].equals(letterToCity.get(position))){
isLetter=true;
break;
}
}
if(!isLetter){
Toast.makeText(this, letterToCity.get(position), Toast.LENGTH_SHORT).show();
}
break;
case R.id.listView2:
for(int i=0;i<letterToCity.size();i++){
if(letter[position].equals(letterToCity.get(i))){
lv.setSelection(i);
break;
}
}
break;
default:
break;
}
}
} class ViewHolder{ TextView tv; LinearLayout ll;}class ViewHolder1{ TextView tv;}class ViewHolder2{ TextView tv;} |