我尝试使用网站将SearchView添加到我的应用中：
http://www.tutorialsbuzz.com/2015/11/Android-Filter-RecyclerView-Using-SearchView-In-ToolBar.html
然而，点击过滤结果后，我无法将用户发送到正确的Recyclerview位置：
例如：如果用户搜索了第二个结果并点击了该应用，则应用会使用第一个结果向第二个结果发送下一个活动（详情活动）。
以下是我的应用代码（ ListAdapter.java ）：
public class ListAdapter extends RecyclerView.Adapter<ListAdapter.GmailVH> {
ArrayList< Information > dataList;
String letter;
Context context;
public ListAdapter(Context context, ArrayList< Information > dataList) {
this.context = context;
this.dataList = dataList;
}
@Override
public GmailVH onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_item, viewGroup, false);
return new GmailVH(view);
}
@Override
public void onBindViewHolder(GmailVH gmailVH, int i) {
Information current= dataList.get(i);
gmailVH.title.setText(current.title);
letter = String.valueOf(current.title2);
TextDrawable drawable = TextDrawable.builder()
.buildRound(letter, generator.getRandomColor());
gmailVH.letter.setImageDrawable(drawable);
}
@Override
public int getItemCount() {
return dataList == null ? 0 : dataList.size();
}
public Object getItem(int location) {
return dataList.get(location);
}
class GmailVH extends RecyclerView.ViewHolder {
TextView title;
ImageView letter;
public GmailVH(View itemView) {
super(itemView);
letter = (ImageView) itemView.findViewById(R.id.gmailitem_letter);
title = (TextView) itemView.findViewById(R.id.gmailitem_title);
}
}
public void setFilter(List<Information> informations) {
dataList = new ArrayList<>();
dataList.addAll(informations);
notifyDataSetChanged();
}
}
MainActivity.java ：
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
RecyclerView recyclerView;
ListAdapter adapter;
private DrawerLayout mDrawerLayout;
private ActionBarDrawerToggle mDrawerToggle;
final ArrayList< Information > listData = new ArrayList<>();
@Override
protected void onCreate ( Bundle savedInstanceState ) {
super.onCreate( savedInstanceState );
setContentView( R.layout.activity_main );
Toolbar toolbar = ( Toolbar ) findViewById( R.id.toolbar );
setSupportActionBar( toolbar );
mNavigationView = ( NavigationView ) findViewById( R.id.nav_view );
mNavigationView.setNavigationItemSelectedListener( this );
mDrawerLayout = ( DrawerLayout ) findViewById( R.id.drawer_layout );
mDrawerToggle = new ActionBarDrawerToggle( this, mDrawerLayout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close );
mDrawerLayout.addDrawerListener( mDrawerToggle );
mDrawerToggle.syncState();
recyclerView = ( RecyclerView ) findViewById( R.id.gmail_list );
recyclerView.setLayoutManager( new LinearLayoutManager( this ) );
recyclerView.setItemAnimator( new DefaultItemAnimator() );
String[] title_array = getResources().getStringArray( R.array.title_array );
String[] letters_array = getResources().getStringArray( R.array.letters_array );
for ( int i = 0; i < title_array.length && i < letters_array.length; i++ ) {
Information feed = new Information();
feed.title = title_array[ i ];
feed.title2 = letters_array[ i ];
listData.add( feed );
}
if ( adapter == null ) {
adapter = new ListAdapter( this, listData );
recyclerView.setAdapter( adapter );
}
recyclerView.addOnItemTouchListener( new RecyclerTouchListener( this, recyclerView, new ClickListener() {
@Override
public void onClick ( View view, int position ) {
Intent intent = new Intent( MainActivity.this, Name_info.class );
Bundle extras = new Bundle();
String[] title_array = getResources().getStringArray( R.array.title_array );
final String title_clicked = title_array[ position ];
String[] letters_array = getResources().getStringArray( R.array.letters_array );
final String letters_clicked = letters_array[ position ];
String[] letters_title_array = getResources().getStringArray( R.array.letters_title_array );
final String letters_title_clicked = letters_title_array [ position ];
intent.putExtras( extras );
intent.putExtra( "title_array", title_clicked );
intent.putExtra( "letters_array", letters_clicked );
intent.putExtra( "letters_title_array", letters_title_clicked );
ActivityCompat.startActivity( MainActivity.this, intent, extras );
}
}
) );
if ( !didUserSeeDrawer() ) {
showDrawer();
markDrawerSeen();
} else {
hideDrawer();
}
}
@Override
public boolean onCreateOptionsMenu ( Menu menu ) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate( R.menu.main, menu );
final SearchView searchView = ( SearchView ) MenuItemCompat.getActionView( item );
searchView.setOnQueryTextListener(
new SearchView.OnQueryTextListener(){
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
final ArrayList<Information> filteredModelList = filter(listData , newText);
adapter.setFilter(filteredModelList);
return true;
}
});
MenuItemCompat.setOnActionExpandListener( item,
new MenuItemCompat.OnActionExpandListener() {
@Override
public boolean onMenuItemActionCollapse ( MenuItem item ) {
// Do something when collapsed
adapter.setFilter( listData );
return true; // Return true to collapse action view
}
@Override
public boolean onMenuItemActionExpand ( MenuItem item ) {
// Do something when expanded
return true; // Return true to expand action view
}
} );
return true;
}
@Override
public boolean onOptionsItemSelected ( MenuItem item ) {
switch ( item.getItemId() ) {
case android.R.id.home:
mDrawerLayout.openDrawer( GravityCompat.START );
return true;
}
return super.onOptionsItemSelected( item );
}
//...
class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerTouchListener ( Context context, final RecyclerView recyclerView, final ClickListener
clickListener ) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector( context, new GestureDetector
.SimpleOnGestureListener() {
@Override
public boolean onSingleTapUp ( MotionEvent e ) {
return true;
}
} );
}
@Override
public boolean onInterceptTouchEvent ( RecyclerView rv, MotionEvent e ) {
View child = rv.findChildViewUnder( e.getX(), e.getY() );
if ( child != null && clickListener != null && gestureDetector.onTouchEvent( e ) )
{
clickListener.onClick( child, rv.getChildAdapterPosition( child ) );
}
return false;
}
@Override
public void onTouchEvent ( RecyclerView rv, MotionEvent e ) {
}
@Override
public void onRequestDisallowInterceptTouchEvent ( boolean disallowIntercept ) {
}
}
public interface ClickListener {
void onClick ( View view, int position );
}
private ArrayList<Information> filter(ArrayList<Information> models, String query) {
query = query.toLowerCase();
final ArrayList<Information> filteredModelList = new ArrayList<>();
for (Information model : models) {
final String text = model.getName().toLowerCase();
if (text.contains(query)) {
filteredModelList.add(model);
}
}
return filteredModelList;
}
}
Information.java
public class Information {
String title;
String title2;
public String getName() {
return title;
}
}
提前致谢。
使用解决方案进行更新：
将以下代码添加到 Information.java ：
public class Information {
String title;
String title2;
String title3;
public String getName() {
return title;
}
public String getLetter() {
return title2;
}
public String getLetter_title() {
return title3;
}
}
并替换String []数组＆amp; putExtra在 MainActivity.java 中：
Information information = (Information )adapter.getItem(position);
intent.putExtra( "title_array", information.getName() );
intent.putExtra( "letters_array", information.getLetter() );
intent.putExtra( "letters_title_array", information.getLetter_title() );
答案 0 :(得分：0)
在onclick方法中，您始终从相同的数组中获取每个项目。因此，即使您过滤数据，也会选择要发送的错误项目。