我的MainActivity是如何在expandablelistview中实现搜索功能，当搜索框为空时显示复选框，显示expandablelistview，输入搜索框的单词字母显示列表视图。
public class MainActivity extends Activity {
private ExpandableListAdapter expandableListAdapter;
private ExpandableListView expandableListView;
// private ArrayList<Category> categories;
List<String> expandableListTitle;
HashMap<String, List<String>> expandableListDetail;
protected Context mContext;
private ListView listView;
private EditText searchField;
private TextView cancelTextView;
CheckBox chkIos;
Button display;
private BaseSearchableListAdapter searchableListAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
setContentView(R.layout.activity_main);
mContext = this;
expandableListView = (ExpandableListView) findViewById(R.id.expandableListView);
searchField = (EditText) findViewById(R.id.search_friends_field);
cancelTextView = (TextView) findViewById(R.id.cancel_button);
listView=(ListView)findViewById(R.id.list);
listView.setVisibility(View.GONE);
expandableListDetail = ExpandableListDataPump.getData();
expandableListTitle = new ArrayList<String>(expandableListDetail.keySet());
expandableListAdapter = new ExpandableListAdapter(this,expandableListTitle, expandableListDetail);
expandableListView.setAdapter(expandableListAdapter);
expandableListView.setChoiceMode(expandableListView.CHOICE_MODE_MULTIPLE);
display = (Button) findViewById(R.id.button1);
searchField.addTextChangedListener(watch);
cancelTextView.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
cancelFilter(null);
}
});
display.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// Create string buffer to
StringBuffer OUTPUT = new StringBuffer();
OUTPUT.append("These are selected/n").append(
expandableListAdapter.selected_profileid);
Toast.makeText(MainActivity.this, OUTPUT.toString(),
Toast.LENGTH_LONG).show();
}
});
// searchView = (EditText) findViewById(R.id.search);
expandableListView.setOnChildClickListener(new OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent,
View clickedView, int groupPosition, int childPosition,
long id) {
return true;
}
});
}