Well, I have a RecyclerView, whose Items contains name and subtext. I created a class MyObject in order to fill them. With my Adapter, I am filling the RecyclerView. I want to search for a String name in my RecyclerView and that the application showed all the Items whose names matching the search (including name and subtext). But I don't know how I can do this. It is really hard to explain for me, so you will probably understand more from my code. I can provide more information or code if you need. (Sorry for some Russian text, but it doesn't really matter anyway).
MainActivity.java code:
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener, SearchView.OnQueryTextListener {
DatabaseHelper myDB;
MyAdapter mAdapter;
RecyclerView mRecyclerView;
int year,month,day;
int count;
ArrayList<MyObject> myObjects;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myDB = new DatabaseHelper(this);
Calendar c = Calendar.getInstance();
year = c.get(Calendar.YEAR);
month = c.get(Calendar.MONTH);
day = c.get(Calendar.DAY_OF_MONTH);
Cursor cursor = myDB.forCount(year,month,day);
count = cursor.getCount();
if (count != 0) {
alertWhenDelete(count);}
myDB.deleteIstekshiySrokGodnosy(year,month,day);
mRecyclerView = findViewById(R.id.recyclerView);
myObjects = new ArrayList<>();
Cursor data = myDB.getListContents();
if(data.getCount() == 0){
Toast.makeText(this, "Ваш список товаров пуст!",Toast.LENGTH_LONG).show();
}else{
while(data.moveToNext()){
myObjects.add(new MyObject(data.getString(1), "Дата окончания срока годности: "+data.getInt(4)+"."+data.getInt(3)+"."+data.getInt(2)));
mAdapter = new MyAdapter();
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mRecyclerView.setAdapter(mAdapter);
mAdapter.updateData(myObjects);
}
}
...
@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);
MenuItem menuItem = menu.findItem(R.id.action_search);
SearchView searchView = (SearchView) menuItem.getActionView();
searchView.setOnQueryTextListener(this);
return true;
}
...
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
String userInput = newText.toLowerCase();
ArrayList<MyObject> newList = new ArrayList<>();
for (String name : myObjects){
if(name.toLowerCase().contains(userInput)) {
newList.add(name);
}
}
mAdapter.updateData(newList);
return true;
}
}
MyAdapter.java code:
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> implements View.OnClickListener {
private ArrayList<MyObject> mItems = new ArrayList<>();
public String nametext;
DatabaseHelper myDB;
int idactivity;
String nameactivity;
int yearactivity;
int monthactivity;
int dayactivity;
int priceactivity;
@NonNull
@Override
public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);
MyViewHolder vh=new MyViewHolder(view);
view.setOnClickListener(this);
return vh;
}
@Override
public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
holder.bindData(getItem(position));
}
@Override
public int getItemCount() {
return mItems.size();
}
public void updateData(ArrayList<MyObject> items) {
mItems = new ArrayList<>(items);
notifyDataSetChanged();
}
private MyObject getItem(int position) {
if (position >= 0 && position < mItems.size())
return mItems.get(position);
return null;
}
@Override
public void onClick(View v) {
idactivity = 0;
nameactivity = null;
yearactivity = 0;
monthactivity = 0;
dayactivity = 0;
priceactivity = 0;
myDB = new DatabaseHelper(v.getContext());
TextView clickedName=(TextView)v.findViewById(R.id.title);
nametext = clickedName.getText().toString();
Toast.makeText(v.getContext(),nametext,Toast.LENGTH_LONG).show();
Cursor c = myDB.showDataonSelect(nametext);
if(c.moveToFirst()) {
idactivity = c.getInt(0) ;
nameactivity = c.getString(1) ;
yearactivity = c.getInt(2) ;
monthactivity = c.getInt(3) ;
dayactivity = c.getInt(4);
priceactivity = c.getInt(5);
}
Log.d("TAG",
"ID = " + idactivity +
", name = " + nameactivity +
", year = " + yearactivity +
", month = " + monthactivity +
", day = " + dayactivity +
", price = " + priceactivity);
Intent myIntent = new Intent(v.getContext(), Main3Activity.class);
Bundle extras = new Bundle();
extras.putString("Name", nameactivity);
extras.putInt("Year", yearactivity);
extras.putInt("Month", monthactivity);
extras.putInt("Day", dayactivity);
extras.putInt("Price", priceactivity);
myIntent.putExtras(extras);
v.getContext().startActivity(myIntent);
}
class MyViewHolder extends RecyclerView.ViewHolder {
TextView title;
TextView subTitle;
MyViewHolder(View itemView) {
super(itemView);
title = itemView.findViewById(R.id.title);
subTitle = itemView.findViewById(R.id.sub_title);
}
void bindData(MyObject myObject) {
if (myObject == null)
return;
title.setText(myObject.title);
subTitle.setText(myObject.subTitle);
}
}
}
MyObject.java code:
public class MyObject {
public String title;
public String subTitle;
public MyObject(String title, String subTitle) {
this.title = title;
this.subTitle = subTitle;
}
}
When I am searching for Item's name in Search, I want to see that application shows me Items with names that are matching the search and their subtext.
