[英]android : search in custom listview
我想用自定义数据填充列表视图,所以我创建了扩展BaseAdapter
:
public class PersonAdapter extends BaseAdapter{
List<Person> persons= getDataforListViewList();
@Override
public int getCount() {
// TODO Auto-generated method stub
return persons.size();
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return persons.get(arg0);
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int arg0, View arg1, ViewGroup arg2) {
if(arg1==null)
{
LayoutInflater inflater = (LayoutInflater) MainActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
arg1 = inflater.inflate(R.layout.listitem, arg2,false);
}
TextView Name = (TextView)arg1.findViewById(R.id.txtName);
TextView PhoneNumber = (TextView)arg1.findViewById(R.id.txtPhone);
Person person = persons.get(arg0);
Name.setText(person.name);
PhoneNumber.setText(person.phoneNumber);
return arg1;
}
}
然后我以这种方式填充列表视图:
PersonAdapter pe;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pe=new PersonAdapter();
ListView personListView = (ListView)findViewById(R.id.listView1);
personListView.setAdapter(pe);
EditText inputSearch=(EditText) findViewById(R.id.inputSearch);
txtEditText.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub
}
}
上面的代码可以正常工作,现在我想为列表视图添加搜索功能,该怎么做?
您可以使用Filter类,该类将使用edittext addTextChangedListener
过滤列表视图内的每个数据。
myFilter.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
dataAdapter.getFilter().filter(s.toString());
}
});
您需要创建一个扩展Filter的类。
有很好的例子在这里
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