BaseAdapter Listview过滤Android
在我的BaseAdapter Listview过滤Android,android,listview,Android,Listview,在我的列表视图中,我有文本和图像,它们存储在数组列表中 我正在使用BaseAdapter显示列表 我想根据在EditText中键入的文本,在列表上使用过滤器,但不起作用 我的代码是:adv是EditText adv.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int arg1, int arg2,
列表视图中,我有文本和图像,它们存储在数组列表中
我正在使用BaseAdapter
显示列表
我想根据在EditText
中键入的文本,在列表上使用过滤器
,但不起作用
我的代码是:adv是EditText
adv.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub
viewadapter.getFilter().filter(s);
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});
我的BaseAdapter
实现了Filterable
sogetFilter
方法,即:
@Override
public Filter getFilter() {
// TODO Auto-generated method stub
if (mFilter == null) {
mFilter = new ArrayFilter();
}
return mFilter;
}
我的ArrayFilter
是:
private class ArrayFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence prefix) {
FilterResults results = new FilterResults();
if (mNames == null) {
synchronized (mLock) {
mNames = new ArrayList<String>(mObjects);
}
}
if (prefix == null || prefix.length() == 0) {
synchronized (mLock) {
ArrayList<String> list = new ArrayList<String>(mNames);
results.values = list;
results.count = list.size();
}
} else {
String prefixString = prefix.toString().toLowerCase();
final ArrayList<String> values = mNames;
final int count = values.size();
final ArrayList<String> newValues = new ArrayList<String>(count);
for (int i = 0; i < count; i++) {
final String value = values.get(i);
final String valueText = value.toString().toLowerCase();
// First match against the whole, non-splitted value
if (valueText.startsWith(prefixString)) {
newValues.add(value);
} else {
final String[] words = valueText.split(" ");
final int wordCount = words.length;
for (int k = 0; k < wordCount; k++) {
if (words[k].startsWith(prefixString)) {
newValues.add(value);
break;
}
}
}
}
results.values = newValues;
results.count = newValues.size();
}
return results;
}
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
//noinspection unchecked
mObjects = (List<String>) results.values;
if (results.count > 0) {
viewadapter.notifyDataSetChanged();
} else {
viewadapter.notifyDataSetInvalidated();
}
}
}
私有类ArrayFilter扩展了过滤器{
@凌驾
受保护的筛选器结果执行筛选(字符序列前缀){
FilterResults results=新的FilterResults();
if(mNames==null){
已同步(mLock){
mNames=新的阵列列表(mObjects);
}
}
if(prefix==null | | prefix.length()==0){
已同步(mLock){
ArrayList=新的ArrayList(mNames);
结果.值=列表;
results.count=list.size();
}
}否则{
字符串prefixString=prefix.toString().toLowerCase();
最终ArrayList值=mNames;
最终整数计数=values.size();
最终ArrayList newValues=新ArrayList(计数);
for(int i=0;i0){
viewadapter.notifyDataSetChanged();
}否则{
viewadapter.notifyDataSetionValidated();
}
}
}
其中mNames
是ArrayList
,我想用它来过滤列表视图
并且还启用了setTextFilterEnabled(true)。
,但筛选不起作用
这是正确的方法吗?有什么问题吗?如果没有,怎么做?这是API演示示例
public class SearchViewFilterMode extends Activity implements SearchView.OnQueryTextListener {
private static final String TAG = "SearchViewFilterMode";
private SearchView mSearchView;
private ListView mListView;
private ArrayAdapter<String> mAdapter;
private final String[] mStrings = Cheeses.sCheeseStrings;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
setContentView(R.layout.searchview_filter);
mSearchView = (SearchView) findViewById(R.id.search_view);
mListView = (ListView) findViewById(R.id.list_view);
mListView.setAdapter(mAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
mStrings));
mListView.setTextFilterEnabled(true);
setupSearchView();
}
private void setupSearchView() {
mSearchView.setIconifiedByDefault(false);
mSearchView.setOnQueryTextListener(this);
mSearchView.setSubmitButtonEnabled(false);
mSearchView.setQueryHint(getString(R.string.cheese_hunt_hint));
}
public boolean onQueryTextChange(String newText) {
if (TextUtils.isEmpty(newText)) {
mListView.clearTextFilter();
} else {
mListView.setFilterText(newText.toString());
}
return true;
}
public boolean onQueryTextSubmit(String query) {
return false;
}
}
公共类SearchViewFilterMode扩展活动实现SearchView.OnQueryTextListener{
私有静态最终字符串标记=“SearchViewFilterMode”;
私有搜索视图;
私有列表视图;
私人ArrayaAdapter mAdapter;
私有最终字符串[]mStrings=Cheeses.sCheeseStrings;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE\u ACTION\u栏);
setContentView(R.layout.searchview\u过滤器);
mSearchView=(SearchView)findViewById(R.id.search\u视图);
mListView=(ListView)findViewById(R.id.list\u视图);
mListView.setAdapter(mAdapter=new ArrayAdapter(此,
android.R.layout.simple\u list\u item\u 1,
mStrings);
mListView.setTextFilterEnabled(true);
setupSearchView();
}
私有void setupSearchView(){
mSearchView.setIconifiedByDefault(false);
mSearchView.setOnQueryTextListener(此);
mSearchView.setSubmitButtonEnabled(false);
mSearchView.setQueryHint(getString(R.string.cheese\u hunt\u hint));
}
公共布尔onQueryTextChange(字符串newText){
if(TextUtils.isEmpty(newText)){
mListView.clearTextFilter();
}否则{
mListView.setFilterText(newText.toString());
}
返回true;
}
公共布尔值onQueryTextSubmit(字符串查询){
返回false;
}
}
您解决了这个问题吗?你能给我们一个反馈吗?不,我没有得到解决,那就是我一直开着!!如果您有这样的想法,请在这里发布您是如何在ArrayList中保存文本和图像的???我希望这个示例可以帮助您[如何将getfilter与baseadapter一起使用的示例][1][1]: