Android ListView搜索视图
我创建了一个由SQLite数据库填充的ListView。 在我的应用程序中,您可以将书籍添加到数据库,并可以在BookDataListActivity中查看图书列表 现在我想实现一个SearchView来过滤书籍。我用了这个视频 但它不起作用。 遵循我的代码。希望你能帮助我Android ListView搜索视图,android,listview,filter,searchview,Android,Listview,Filter,Searchview,我创建了一个由SQLite数据库填充的ListView。 在我的应用程序中,您可以将书籍添加到数据库,并可以在BookDataListActivity中查看图书列表 现在我想实现一个SearchView来过滤书籍。我用了这个视频 但它不起作用。 遵循我的代码。希望你能帮助我 package com.kasutwentyseven.gui4selfshelf.Books; import android.app.Activity; import android.database.Cursor; i
package com.kasutwentyseven.gui4selfshelf.Books;
import android.app.Activity;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.TextView;
import android.widget.Toast;
import com.kasutwentyseven.gui4selfshelf.R;
public class BookDataListActivity extends Activity {
public ListView booklistView;
public SearchView searchView;
public SQLiteDatabase sqLiteDatabaseBooks;
public BookDBHelper bookDBHelper;
public Cursor cursor2;
public BookListDataAdapter bookListDataAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.book_data_list_layout);
Typeface myTypeface = Typeface.createFromAsset(getAssets(), "Lobster.ttf");
TextView myTextView = (TextView) findViewById(R.id.text_yourbooks);
myTextView.setTypeface(myTypeface);
booklistView = (ListView)findViewById(R.id.book_list_view);
searchView = (SearchView) findViewById(R.id.search_bar);
bookListDataAdapter = new BookListDataAdapter(getApplicationContext(),R.layout.row_book_layout);
booklistView.setAdapter(bookListDataAdapter);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String text) {
return false;
}
@Override
public boolean onQueryTextChange(String text) {
bookListDataAdapter.getFilter().filter(text);
return false;
}
});
bookDBHelper = new BookDBHelper(getApplicationContext());
sqLiteDatabaseBooks = bookDBHelper.getReadableDatabase();
cursor2 = bookDBHelper.getInformations(sqLiteDatabaseBooks);
if(cursor2.moveToFirst())
{
do{
String booktitle, bookauthor,bookdate, bookrating, bookshelf;
booktitle = cursor2.getString(0);
bookauthor = cursor2.getString(1);
bookdate = cursor2.getString(2);
bookrating = cursor2.getString(3);
bookshelf = cursor2.getString(4);
BookDataProvider bookDataProvider = new BookDataProvider(booktitle, bookauthor, bookdate, bookrating, bookshelf);
bookListDataAdapter.add(bookDataProvider);
}while(cursor2.moveToNext());
}
booklistView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getBaseContext(), parent.getItemAtPosition(position) + " is selected", Toast.LENGTH_LONG).show();
}
});
}
}
您可以发布
BookListDataAdapter
吗。您需要在那里实现过滤机制。ArrayAdapter具有getFilter方法。但您正在实现可过滤接口。看看@Custom Filter implementation@谢谢你的链接,我会在当天晚些时候尝试实现它。我必须将您的链接的答案实现到我的DatabaseAdapter?我没有让它运行。还有更多的信息@Raghunandan。stackoverflow上有很多样品
package com.kasutwentyseven.gui4selfshelf.Books;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Filterable;
import android.widget.TextView;
import com.kasutwentyseven.gui4selfshelf.R;
import java.util.ArrayList;
import java.util.List;
public class BookListDataAdapter extends ArrayAdapter implements Filterable{
List booklist = new ArrayList();
public BookListDataAdapter(Context context,int resource) {
super(context, resource);
}
static class BookLayoutHandler {
TextView BOOKTITLE, BOOKAUTHOR, BOOKDATE, BOOKRATING, BOOKSHELF;
}
@Override
public void add (Object object){
super.add(object);
booklist.add(object);
}
@Override
public int getCount() {
return booklist.size();
}
@Override
public Object getItem(int position) {
return booklist.get(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row1= convertView;
BookLayoutHandler bookLayoutHandler;
if(row1 == null){
LayoutInflater layoutInflater = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row1 = layoutInflater.inflate(R.layout.row_book_layout, parent, false);
bookLayoutHandler = new BookLayoutHandler();
bookLayoutHandler.BOOKTITLE = (TextView) row1.findViewById(R.id.text_book_title);
bookLayoutHandler.BOOKAUTHOR = (TextView) row1.findViewById(R.id.text_book_author);
bookLayoutHandler.BOOKDATE = (TextView) row1.findViewById(R.id.text_book_date);
bookLayoutHandler.BOOKRATING = (TextView) row1.findViewById(R.id.text_book_rating);
bookLayoutHandler.BOOKSHELF = (TextView) row1.findViewById(R.id.text_book_shelf);
row1.setTag(bookLayoutHandler);
}else{
bookLayoutHandler = (BookLayoutHandler) row1.getTag();
}
BookDataProvider bookDataProvider = (BookDataProvider) this.getItem(position);
bookLayoutHandler.BOOKTITLE.setText(bookDataProvider.getBooktitle());
bookLayoutHandler.BOOKAUTHOR.setText(bookDataProvider.getBookauthor());
bookLayoutHandler.BOOKDATE.setText(bookDataProvider.getBookdate());
bookLayoutHandler.BOOKRATING.setText(bookDataProvider.getBookrating());
bookLayoutHandler.BOOKSHELF.setText(bookDataProvider.getBookshelf());
return row1;
}
}