大家。我对这段代码的这段摘录有疑问：
cocktailListView.setAdapter(adapter);
鸡尾酒列表视图无法解析
我的整个代码是：
public class SearchCustomListViewActivity extends ListActivity {
//ArrayList thats going to hold the search results
ArrayList<HashMap<String, Object>> searchResults;
//ArrayList that will hold the original Data
ArrayList<HashMap<String, Object>> originalValues;
LayoutInflater inflater;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final EditText searchBox=(EditText) findViewById(R.id.searchBox);
ListView playerListView=(ListView) findViewById(android.R.id.list);
//get the LayoutInflater for inflating the customomView
//this will be used in the custom adapter
inflater=(LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//these arrays are just the data that
//I'll be using to populate the ArrayList
//You can use our own methods to get the data
String names[]={"Ronaldo","Messi","Torres","Iniesta",
"Drogba","Gerrard","Rooney","Xavi"};
String teams[]={"Real Madrid","Barcelona","Chelsea",
"Barcelona","Chelsea","Liverpool",
"ManU","Barcelona"};
Integer[] photos={R.drawable.amazonas,R.drawable.amazonas,
R.drawable.amazonas,R.drawable.amazonas,
R.drawable.amazonas,R.drawable.amazonas,
R.drawable.amazonas,R.drawable.amazonas};
originalValues=new ArrayList<HashMap<String,Object>>();
//temporary HashMap for populating the
//Items in the ListView
HashMap<String , Object> temp;
//total number of rows in the ListView
int noOfPlayers=names.length;
//now populate the ArrayList players
for(int i=0;i<noOfPlayers;i++)
{
temp=new HashMap<String, Object>();
temp.put("name", names[i]);
temp.put("team", teams[i]);
temp.put("photo", photos[i]);
//add the row to the ArrayList
originalValues.add(temp);
}
//searchResults=OriginalValues initially
searchResults=new ArrayList<HashMap<String,Object>>(originalValues);
//create the adapter
//first param-the context
//second param-the id of the layout file
//you will be using to fill a row
//third param-the set of values that
//will populate the ListView
final CustomAdapter adapter=new CustomAdapter(this, R.layout.players_layout,searchResults);
//finally,set the adapter to the default ListView
cocktailListView.setAdapter(adapter);
searchBox.addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
//get the text in the EditText
String searchString=searchBox.getText().toString();
int textLength=searchString.length();
searchResults.clear();
for(int i=0;i<originalValues.size();i++)
{
String playerName=originalValues.get(i).get("name").toString();
if(textLength<=playerName.length()){
//compare the String in EditText with Names in the ArrayList
if(searchString.equalsIgnoreCase(playerName.substring(0,textLength)))
searchResults.add(originalValues.get(i));
}
}
adapter.notifyDataSetChanged();
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
public void afterTextChanged(Editable s) {}
});
}
//define your custom adapter
private class CustomAdapter extends ArrayAdapter<HashMap<String, Object>>
{
public CustomAdapter(Context context, int textViewResourceId,
ArrayList<HashMap<String, Object>> Strings) {
//let android do the initializing :)
super(context, textViewResourceId, Strings);
}
//class for caching the views in a row
private class ViewHolder
{
ImageView photo;
TextView name,team;
}
ViewHolder viewHolder;
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView==null)
{
convertView=inflater.inflate(R.layout.players_layout, null);
viewHolder=new ViewHolder();
//cache the views
viewHolder.photo=(ImageView) convertView.findViewById(R.id.photo);
viewHolder.name=(TextView) convertView.findViewById(R.id.name);
viewHolder.team=(TextView) convertView.findViewById(R.id.team);
//link the cached views to the convertview
convertView.setTag(viewHolder);
}
else
viewHolder=(ViewHolder) convertView.getTag();
int photoId=(Integer) searchResults.get(position).get("photo");
//set the data to be displayed
viewHolder.photo.setImageDrawable(getResources().getDrawable(photoId));
viewHolder.name.setText(searchResults.get(position).get("name").toString());
viewHolder.team.setText(searchResults.get(position).get("team").toString());
//return the view to be displayed
return convertView;
}
}
}