[英]SearchView.OnQueryTextListener
我正在尝试使用SearchView搜索项目，但我不知道为什么找不到可能的方法，您能帮我吗？
FragGridCampos.java
public class FragGridCampos extends Fragment implements SearchView.OnQueryTextListener{
//Creating a List of jornadas
private List<Estadisticas> listJornadas;
//Creating Views
private RecyclerView recyclerView;
private RecyclerView.LayoutManager layoutManager;
private RecyclerView.Adapter adapter;
private List<Estadisticas> mCountryModel;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final View view = inflater.inflate( R.layout.campos_list_todos, null);
setHasOptionsMenu(true);
recyclerView = (RecyclerView) view.findViewById( R.id.recyclerView);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new GridLayoutManager(getActivity(), 1);
recyclerView.setLayoutManager(layoutManager);
TextView miTexto = (TextView)view.findViewById( R.id.mi_texto);
miTexto.setText("CAMPOS");
//miTexto.setTextColor(color.RED);
listJornadas = new ArrayList<>();
getData();
recyclerView.setAdapter(adapter);
recyclerView.addItemDecoration(new DecoracionLineaDivisoria(getActivity()));
/*ImageButton fabButton = (ImageButton) view.findViewById(R.id.fab);
fabButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//startActivity(new Intent(getActivity(), MainActivity2.class));
Toast.makeText(getActivity(),"Proximamente",Toast.LENGTH_SHORT).show();
}
});*/
return view;
}
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.menu_buscar, menu);
final MenuItem searchItem = menu.findItem(R.id.action_search);
final SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
searchView.setOnQueryTextListener(this);
}
//This method will get data from the web api
private void getData(){
//Showing a progress dialog
final ProgressDialog loading = ProgressDialog.show(getActivity(),"Cargando datos", "Por favor espere...",false,false);
//Creating a json array request
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(ConfigAmaters.CAMPOS,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
//Dismissing progress dialog
loading.dismiss();
//calling method to parse json array
parseData(response);
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
//Creating request queue
RequestQueue requestQueue = Volley.newRequestQueue(getActivity());
//Adding request to the queue
requestQueue.add(jsonArrayRequest);
}
//This method will parse json data
private void parseData(JSONArray array){
for(int i = 0; i<array.length(); i++) {
Estadisticas campo = new Estadisticas();
JSONObject json = null;
try {
json = array.getJSONObject(i);
campo.setNombre_campo(json.getString("nombre_campo"));
campo.setPoblacion(json.getString("poblacion"));
campo.setEquipo(json.getString("equipo"));
campo.setTelefono(json.getString("telefono"));
campo.setGeo(json.getString("geo"));
campo.setUrl(json.getString("url"));
campo.setEmail(json.getString("email"));
campo.setEscudo(json.getString("escudo"));
} catch (JSONException e) {
e.printStackTrace();
}
listJornadas.add(campo);
}
//Finally initializing our adapter
adapter = new Campos_Adapter(listJornadas, getActivity());
//Adding adapter to recyclerview
recyclerView.setAdapter(adapter);
}
private LayoutInflater getMenuInflater() {
return null;
}
@Override
public boolean onQueryTextChange(String newText) {
final List<Estadisticas> filteredModelList = filter(mCountryModel, newText);
adapter.setFilter(filteredModelList);
return true;
}
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
private List<Estadisticas> filter(List<Estadisticas> models, String query) {
query = query.toLowerCase();final List<Estadisticas> filteredModelList = new ArrayList<>();
for (Estadisticas model : models) {
final String text = model.getPoblacion().toLowerCase();
if (text.contains(query)) {
filteredModelList.add(model);
}
}
return filteredModelList;
}
}
Campos_Adapter.java
private ImageLoader imageLoader;
private Context context;
List<Estadisticas> estadisticas;
public Campos_Adapter(List<Estadisticas> estadisticas, Context context) {
super();
this.estadisticas = estadisticas;
this.context = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from( parent.getContext() ).inflate( R.layout.campos_row, parent, false );
ViewHolder viewHolder = new ViewHolder( v );
return viewHolder;
}
public void onBindViewHolder(ViewHolder holder, final int position) {
holder.root.setOnClickListener( new View.OnClickListener() {
@Override
public void onClick(View view) {
//Toast.makeText(context, "this is my Toast message!!! =)",
//Toast.LENGTH_LONG).show();
//Toast.makeText(context, estadisticas.get(position).getNombrePlato(), Toast.LENGTH_SHORT).show();
Intent intent= new Intent(context, DetailCampos.class);
intent.putExtra("Poblacion", estadisticas.get(position).getPoblacion());
intent.putExtra("Nombre_campo", estadisticas.get(position).getNombre_campo());
intent.putExtra("Nombre", estadisticas.get(position).getEquipo());
intent.putExtra("Telefono", estadisticas.get(position).getTelefono());
intent.putExtra("Geo", estadisticas.get(position).getGeo());
intent.putExtra("Email", estadisticas.get(position).getEmail());
intent.putExtra("Url", estadisticas.get(position).getUrl());
intent.putExtra("Imagen", estadisticas.get(position).getEscudo());
context.startActivity(intent);
Estadisticas estadisticas1 = estadisticas.get(getAdapterPosition());
}
private int getAdapterPosition() {
return 0;
}
} );
Estadisticas campos = estadisticas.get( position );
imageLoader = DecoracionLineaDivisoria.CustomVolleyRequest.getInstance(context ).getImageLoader();
imageLoader.get(campos.getEscudo(), ImageLoader.getImageListener(holder.escudo_local, R.mipmap.ic_launcher, android.R.drawable.ic_dialog_alert ) );
holder.textViewEquipo_Local.setText( campos.getEquipo() );
holder.textViewPoblacion.setText( campos.getPoblacion() );
//holder.escudo_local.setImageUrl( campos.getImagenPlato(), imageLoader );
}
@Override
public int getItemCount() {
return estadisticas.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
public ImageView escudo_local;
public TextView textViewEquipo_Local;
public TextView textViewPoblacion;
public View root;
public ViewHolder(View itemView) {
super( itemView );
root = itemView;
escudo_local = (ImageView) itemView.findViewById( R.id.tv_esc_local );
textViewEquipo_Local = (TextView) itemView.findViewById( R.id.tv_ek_local );
textViewPoblacion = (TextView) itemView.findViewById( R.id.tv_poblacion );
}
}
public void setFilter(List<Estadisticas> countryModels) {
estadisticas = new ArrayList<>();
estadisticas.addAll(countryModels);
notifyDataSetChanged();
}
}
行* adapter.setFilter(filteredModelList); setFilter为红色。
我的错误是*错误：（182，16）错误：找不到符号方法setFilter（List）
1.而不是将Adapter声明为：
private RecyclerView.Adapter adapter;
采用：
private Campos_Adapter adapter;
2.另外，从onCreateView()初始化适配器，并从parseData()方法使用adapter.notifyDataSetChanged() 。
如下更新onCreateView()和parseData() ：
//Creating a List of jornadas
private List<Estadisticas> listJornadas;
//Creating Views
private RecyclerView recyclerView;
private RecyclerView.LayoutManager layoutManager;
private Campos_Adapter adapter;
private List<Estadisticas> mCountryModel;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
...........
...................
listJornadas = new ArrayList<Estadisticas>();
adapter = new Campos_Adapter(listJornadas, getActivity());
recyclerView.setAdapter(adapter);
recyclerView.addItemDecoration(new DecoracionLineaDivisoria(getActivity()));
getData();
.........
.............
return view;
}
//This method will parse json data
private void parseData(JSONArray array){
for(int i = 0; i<array.length(); i++) {
Estadisticas campo = new Estadisticas();
JSONObject json = null;
try {
json = array.getJSONObject(i);
campo.setNombre_campo(json.getString("nombre_campo"));
campo.setPoblacion(json.getString("poblacion"));
campo.setEquipo(json.getString("equipo"));
campo.setTelefono(json.getString("telefono"));
campo.setGeo(json.getString("geo"));
campo.setUrl(json.getString("url"));
campo.setEmail(json.getString("email"));
campo.setEscudo(json.getString("escudo"));
} catch (JSONException e) {
e.printStackTrace();
}
listJornadas.add(campo);
adapter.notifyDataSetChanged();
}
}
更新：
java.lang.NullPointerException：尝试在com.ramon.campos.Campos.FragGridCampos.filter（FragGridCampos.java）上的空对象引用上调用接口方法'java.util.Iterator java.util.List.iterator（）' 185）
您的mCountryModel为空。 您尚未初始化。 在onQueryTextChange()尝试以下代码：
@Override
public boolean onQueryTextChange(String newText) {
mCountryModel.addAll(listJornadas);
final List<Estadisticas> filteredModelList = filter(mCountryModel, newText);
adapter.setFilter(filteredModelList);
return true;
}
解决方案：
FragGridCampos.java
public class FragGridCampos extends Fragment implements SearchView.OnQueryTextListener{
//Creating a List of jornadas
private List<Estadisticas> listJornadas;
//Creating Views
private RecyclerView recyclerView;
private RecyclerView.LayoutManager layoutManager;
private Campos_Adapter adapter;
private List<Estadisticas> mCountryModel;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final View view = inflater.inflate( R.layout.campos_list_todos, null);
setHasOptionsMenu(true);
recyclerView = (RecyclerView) view.findViewById( R.id.recyclerView);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new GridLayoutManager(getActivity(), 1);
recyclerView.setLayoutManager(layoutManager);
TextView miTexto = (TextView)view.findViewById( R.id.mi_texto);
miTexto.setText("CAMPOS");
//miTexto.setTextColor(color.RED);
listJornadas = new ArrayList<Estadisticas>();
adapter = new Campos_Adapter(listJornadas, getActivity());
recyclerView.setAdapter(adapter);
recyclerView.addItemDecoration(new DecoracionLineaDivisoria(getActivity()));
getData();
/*ImageButton fabButton = (ImageButton) view.findViewById(R.id.fab);
fabButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//startActivity(new Intent(getActivity(), MainActivity2.class));
Toast.makeText(getActivity(),"Proximamente",Toast.LENGTH_SHORT).show();
}
});*/
return view;
}
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.menu_buscar, menu);
final MenuItem searchItem = menu.findItem(R.id.action_search);
final SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
searchView.setOnQueryTextListener(this);
}
//This method will get data from the web api
private void getData(){
//Showing a progress dialog
final ProgressDialog loading = ProgressDialog.show(getActivity(),"Cargando datos", "Por favor espere...",false,false);
//Creating a json array request
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(ConfigAmaters.CAMPOS,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
//Dismissing progress dialog
loading.dismiss();
//calling method to parse json array
parseData(response);
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
//Creating request queue
RequestQueue requestQueue = Volley.newRequestQueue(getActivity());
//Adding request to the queue
requestQueue.add(jsonArrayRequest);
}
//This method will parse json data
private void parseData(JSONArray array){
for(int i = 0; i<array.length(); i++) {
Estadisticas campo = new Estadisticas();
JSONObject json = null;
try {
json = array.getJSONObject(i);
campo.setNombre_campo(json.getString("nombre_campo"));
campo.setPoblacion(json.getString("poblacion"));
campo.setEquipo(json.getString("equipo"));
campo.setTelefono(json.getString("telefono"));
campo.setGeo(json.getString("geo"));
campo.setUrl(json.getString("url"));
campo.setEmail(json.getString("email"));
campo.setEscudo(json.getString("escudo"));
} catch (JSONException e) {
e.printStackTrace();
}
listJornadas.add(campo);
adapter.notifyDataSetChanged();
}
}
@Override
public boolean onQueryTextChange(String newText) {
final List<Estadisticas> filteredModelList = filter(listJornadas, newText);
adapter.setFilter(filteredModelList);
return true;
}
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
private List<Estadisticas> filter(List<Estadisticas> models, String query) {
query = query.toLowerCase();final List<Estadisticas> filteredModelList = new ArrayList<>();
for (Estadisticas model : models) {
final String poblacion = model.getPoblacion().toLowerCase();
final String equipo = model.getEquipo().toLowerCase();
if (poblacion.contains(query)) {
filteredModelList.add(model);
}
else if (equipo.contains(query)) {
filteredModelList.add(model);
}
}
return filteredModelList;
}
}
Campos_Adapter.java
public class Campos_Adapter extends RecyclerView.Adapter<Campos_Adapter.ViewHolder> {
private ImageLoader imageLoader;
private Context context;
List<Estadisticas> estadisticas;
public Campos_Adapter(List<Estadisticas> estadisticas, Context context) {
super();
this.estadisticas = estadisticas;
this.context = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from( parent.getContext() ).inflate( R.layout.campos_row, parent, false );
ViewHolder viewHolder = new ViewHolder( v );
return viewHolder;
}
public void onBindViewHolder(ViewHolder holder, final int position) {
holder.root.setOnClickListener( new View.OnClickListener() {
@Override
public void onClick(View view) {
//Toast.makeText(context, "this is my Toast message!!! =)",
//Toast.LENGTH_LONG).show();
//Toast.makeText(context, estadisticas.get(position).getNombrePlato(), Toast.LENGTH_SHORT).show();
Intent intent= new Intent(context, DetailCampos.class);
intent.putExtra("Poblacion", estadisticas.get(position).getPoblacion());
intent.putExtra("Nombre_campo", estadisticas.get(position).getNombre_campo());
intent.putExtra("Nombre", estadisticas.get(position).getEquipo());
intent.putExtra("Telefono", estadisticas.get(position).getTelefono());
intent.putExtra("Geo", estadisticas.get(position).getGeo());
intent.putExtra("Email", estadisticas.get(position).getEmail());
intent.putExtra("Url", estadisticas.get(position).getUrl());
intent.putExtra("Imagen", estadisticas.get(position).getEscudo());
context.startActivity(intent);
Estadisticas estadisticas1 = estadisticas.get(getAdapterPosition());
}
private int getAdapterPosition() {
return 0;
}
} );
Estadisticas campos = estadisticas.get( position );
imageLoader = DecoracionLineaDivisoria.CustomVolleyRequest.getInstance(context ).getImageLoader();
imageLoader.get(campos.getEscudo(), ImageLoader.getImageListener(holder.escudo_local, R.mipmap.ic_launcher, android.R.drawable.ic_dialog_alert ) );
holder.textViewEquipo_Local.setText( campos.getEquipo() );
holder.textViewPoblacion.setText( campos.getPoblacion() );
}
@Override
public int getItemCount() {
return estadisticas.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
public ImageView escudo_local;
public TextView textViewEquipo_Local;
public TextView textViewPoblacion;
public View root;
public ViewHolder(View itemView) {
super( itemView );
root = itemView;
escudo_local = (ImageView) itemView.findViewById( R.id.tv_esc_local );
textViewEquipo_Local = (TextView) itemView.findViewById( R.id.tv_ek_local );
textViewPoblacion = (TextView) itemView.findViewById( R.id.tv_poblacion );
}
}
public void setFilter(List<Estadisticas> countryModels) {
estadisticas = new ArrayList<>();
estadisticas.addAll(countryModels);
notifyDataSetChanged();
}
}
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