如何使 Recyclerview 与回调一起正常工作
how to make Recyclerview works correctly with callback
我已经实现了 recyclerview,它工作正常,我在 BikeAdapter 中使用了一个回调来能够点击这个回收器视图的每一行,但是当我把这些行放在 OnCreateView 中时,回收器视图回收器抛出空回调错误,当我删除 mAdapter.setCallback(this); recyclerview 变空了
recyclerView.setAdapter(mAdapter); fillData();
mAdapter = new BikesAdapter(getActivity(), (ArrayList<Bike>) bikes);
mAdapter.setCallback(this);
当我将这些行放在 filldata() OnResponse 方法中时:mAdapter.setCallback(this) 无法识别
mAdapter.setCallback(this);
如果我想毫无问题地显示我的回收站视图,我必须删除 mAdapter.setCallback(this);
mAdapter = new BikesAdapter(getActivity(), (ArrayList) 自行车);
recyclerView.setAdapter(适配器);
在 fillData 内部以在正确的时间获得响应
//我的适配器代码
package com.example.miniprojetandroid.adapters;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.example.miniprojetandroid.R;
import com.example.miniprojetandroid.models.Bike;
public class BikesAdapter extends RecyclerView.Adapter<BikesAdapter.BikesViewHolder> {
private final ArrayList<Bike> bikes;
private Context mContext;
private Callback mCallback;
public BikesAdapter(Context mContext, ArrayList<Bike> bikes) {
this.mContext = mContext ;
this.bikes = bikes;
}
@NonNull
@Override
public BikesAdapter.BikesViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View mItemView = LayoutInflater.from(mContext).inflate(R.layout.bike_list_item, parent, false);
return new BikesViewHolder(mItemView, this);
}
@Override
public void onBindViewHolder(@NonNull BikesAdapter.BikesViewHolder holder, int position) {
final Bike singleItem = bikes.get(position);
holder.BikeName.setText(singleItem.getModel());
holder.BikeImage.setBackgroundResource(singleItem.getImage());
holder.bikeView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mCallback.onItemClicked(singleItem);
}
});
holder.BikeImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(mContext,singleItem.getModel(),Toast.LENGTH_SHORT).show();
}
});
}
@Override
public int getItemCount() {
return bikes.size();
}
public class BikesViewHolder extends RecyclerView.ViewHolder {
public final TextView BikeName;
public final ImageView BikeImage;
public final Button bikeView;
final BikesAdapter mAdapter;
public BikesViewHolder(@NonNull View itemView, BikesAdapter mAdapter) {
super(itemView);
this.BikeName = itemView.findViewById(R.id.bikeName);
this.BikeImage = itemView.findViewById(R.id.bikeImage);
this.bikeView = itemView.findViewById(R.id.btn_view);
this.mAdapter = mAdapter;
}
}
public void setCallback(Callback callback) {
mCallback = callback;
}
public interface Callback {
void onItemClicked(Bike bike);
}
}
//包含回收视图的我的片段
package com.example.miniprojetandroid.ui.fragments;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.example.miniprojetandroid.R;
import java.util.ArrayList;
import java.util.List;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.example.miniprojetandroid.Retrofit.BikeService;
import com.example.miniprojetandroid.Retrofit.RetrofitClient;
import com.example.miniprojetandroid.Retrofit.UserService;
import com.example.miniprojetandroid.adapters.BikesAdapter;
import com.example.miniprojetandroid.models.Bike;
import com.example.miniprojetandroid.models.User;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
public class FragmentOne extends Fragment implements BikesAdapter.Callback{
private BikeService apiService;
private RecyclerView recyclerView;
private List<Bike> bikes = new ArrayList<Bike>();
private BikesAdapter mAdapter;
List<Bike> result = new ArrayList<Bike>();
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_one, container,false);
recyclerView = rootView.findViewById(R.id.recycler_bikes);
recyclerView.setHasFixedSize(true);
recyclerView.setNestedScrollingEnabled(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity(),
LinearLayoutManager.VERTICAL, false));
apiService = RetrofitClient.getClient().create(BikeService.class);
fillData();
mAdapter.setCallback(this);
return rootView;
}
public void fillData(){
Call<List<Bike>> call = apiService.getBikes();
call.enqueue(new Callback<List<Bike>>() {
@Override
public void onResponse(Call<List<Bike>> call, Response<List<Bike>> response) {
if(response.isSuccessful()){
bikes.addAll(response.body());
for(Bike bike: bikes){
bike.setImage(R.drawable.ruebike);
}
Log.e("Bike LIST", bikes.toString());
mAdapter = new BikesAdapter(getActivity(), (ArrayList<Bike>) bikes);
recyclerView.setAdapter(mAdapter);
//listView.setAdapter(new UserAdapter(MainActivity.this, R.layout.list_user, list));
}
}
@Override
public void onFailure(Call<List<Bike>> call, Throwable t) {
Log.e("ERROR: ", t.getMessage());
}
});
/*bikes.add(new Bike(1,"ECO", "RTT" , "44", R.drawable.ruebike ));
bikes.add(new Bike(2,"AAA", "RTT" , "33", R.drawable.ruebike ));
bikes.add(new Bike(3,"BBB", "RUE" , "11", R.drawable.ruebike ));
bikes.add(new Bike(4,"EEE", "SPORT" , "25", R.drawable.ruebike ));
bikes.add(new Bike(5,"CCC", "SPORT" , "77", R.drawable.ruebike ));
Log.e("USERS LIST", bikes.toString());*/
}
@Override
public void onItemClicked(Bike bike) {
Bundle bundle = new Bundle();
bundle.putInt("bike_id",bike.getId());
bundle.putString("model", bike.getModel());
bundle.putString("type", bike.getType());
bundle.putString("price", bike.getPrice());
bundle.putInt("image", bike.getImage());
DetailsFragment f = new DetailsFragment();
f.setArguments(bundle);
getActivity().getSupportFragmentManager()
.beginTransaction()
.replace(R.id.fragmentsContainer, f )
.commit();
}
}
我想做的是两件事:
1/ 使我的片段 recyclerview 使用回调方法与 filldata 一起工作(对于想法 Log.e 表明此方法工作正常)
2/ 确保当我单击回收站视图的一个项目时,我将选定的自行车传递给一个 thired fragmend (DetailsFragment)
错误:当我删除回调时回收器视图是空的,当我使用它时它抛出空异常
请帮帮我
方法 fillData 没有立即执行,因为它包含网络操作,所以它在后台线程上工作,所以当你调用 setCallback 时,mAdapter 将不会被初始化,所以我建议初始化 mAdapter 并在 onCreate 中调用 setAdapter onResponse 方法,您可以将数组作为 null 传递给构造函数,在 onResponse 内部,您可以通过 setter 方法传递自行车 arrayList,并在分配列表后在此方法(setter 方法)中传递“notifyDataSetChanged();”
因此您的适配器将如下所示:
package com.example.miniprojetandroid.adapters;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.example.miniprojetandroid.R;
import com.example.miniprojetandroid.models.Bike;
public class BikesAdapter extends RecyclerView.Adapter<BikesAdapter.BikesViewHolder> {
private final ArrayList<Bike> bikes;
private Context mContext;
private Callback mCallback;
public BikesAdapter(Context mContext, ArrayList<Bike> bikes) {
this.mContext = mContext ;
this.bikes = bikes;
}
public setBikesList(ArrayList<Bike> bikes){
this.bikes=bikes;
notifyDataSetChanged();
}
@NonNull
@Override
public BikesAdapter.BikesViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View mItemView = LayoutInflater.from(mContext).inflate(R.layout.bike_list_item, parent, false);
return new BikesViewHolder(mItemView, this);
}
@Override
public void onBindViewHolder(@NonNull BikesAdapter.BikesViewHolder holder, int position) {
final Bike singleItem = bikes.get(position);
holder.BikeName.setText(singleItem.getModel());
holder.BikeImage.setBackgroundResource(singleItem.getImage());
holder.bikeView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mCallback.onItemClicked(singleItem);
}
});
holder.BikeImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(mContext,singleItem.getModel(),Toast.LENGTH_SHORT).show();
}
});
}
@Override
public int getItemCount() {
return bikes.size();
}
public class BikesViewHolder extends RecyclerView.ViewHolder {
public final TextView BikeName;
public final ImageView BikeImage;
public final Button bikeView;
final BikesAdapter mAdapter;
public BikesViewHolder(@NonNull View itemView, BikesAdapter mAdapter) {
super(itemView);
this.BikeName = itemView.findViewById(R.id.bikeName);
this.BikeImage = itemView.findViewById(R.id.bikeImage);
this.bikeView = itemView.findViewById(R.id.btn_view);
this.mAdapter = mAdapter;
}
}
public void setCallback(Callback callback) {
mCallback = callback;
}
public interface Callback {
void onItemClicked(Bike bike);
}
}
和你的片段:
package com.example.miniprojetandroid.ui.fragments;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.example.miniprojetandroid.R;
import java.util.ArrayList;
import java.util.List;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.example.miniprojetandroid.Retrofit.BikeService;
import com.example.miniprojetandroid.Retrofit.RetrofitClient;
import com.example.miniprojetandroid.Retrofit.UserService;
import com.example.miniprojetandroid.adapters.BikesAdapter;
import com.example.miniprojetandroid.models.Bike;
import com.example.miniprojetandroid.models.User;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
public class FragmentOne extends Fragment implements BikesAdapter.Callback{
private BikeService apiService;
private RecyclerView recyclerView;
private List<Bike> bikes = new ArrayList<Bike>();
private BikesAdapter mAdapter;
List<Bike> result = new ArrayList<Bike>();
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_one, container,false);
recyclerView = rootView.findViewById(R.id.recycler_bikes);
recyclerView.setHasFixedSize(true);
recyclerView.setNestedScrollingEnabled(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity(),
LinearLayoutManager.VERTICAL, false));
apiService = RetrofitClient.getClient().create(BikeService.class);
fillData();
mAdapter = new BikesAdapter(getActivity(),null);
mAdapter.setCallback(this);
recyclerView.setAdapter(mAdapter);
return rootView;
}
public void fillData(){
Call<List<Bike>> call = apiService.getBikes();
call.enqueue(new Callback<List<Bike>>() {
@Override
public void onResponse(Call<List<Bike>> call, Response<List<Bike>> response) {
if(response.isSuccessful()){
bikes.addAll(response.body());
for(Bike bike: bikes){
bike.setImage(R.drawable.ruebike);
}
Log.e("Bike LIST", bikes.toString());
mAdapter.setBikesList(bikes);
//listView.setAdapter(new UserAdapter(MainActivity.this, R.layout.list_user, list));
}
}
@Override
public void onFailure(Call<List<Bike>> call, Throwable t) {
Log.e("ERROR: ", t.getMessage());
}
});
/*bikes.add(new Bike(1,"ECO", "RTT" , "44", R.drawable.ruebike ));
bikes.add(new Bike(2,"AAA", "RTT" , "33", R.drawable.ruebike ));
bikes.add(new Bike(3,"BBB", "RUE" , "11", R.drawable.ruebike ));
bikes.add(new Bike(4,"EEE", "SPORT" , "25", R.drawable.ruebike ));
bikes.add(new Bike(5,"CCC", "SPORT" , "77", R.drawable.ruebike ));
Log.e("USERS LIST", bikes.toString());*/
}
@Override
public void onItemClicked(Bike bike) {
Bundle bundle = new Bundle();
bundle.putInt("bike_id",bike.getId());
bundle.putString("model", bike.getModel());
bundle.putString("type", bike.getType());
bundle.putString("price", bike.getPrice());
bundle.putInt("image", bike.getImage());
DetailsFragment f = new DetailsFragment();
f.setArguments(bundle);
getActivity().getSupportFragmentManager()
.beginTransaction()
.replace(R.id.fragmentsContainer, f )
.commit();
}
}
我已经实现了 recyclerview,它工作正常,我在 BikeAdapter 中使用了一个回调来能够点击这个回收器视图的每一行,但是当我把这些行放在 OnCreateView 中时,回收器视图回收器抛出空回调错误,当我删除 mAdapter.setCallback(this); recyclerview 变空了
recyclerView.setAdapter(mAdapter); fillData();
mAdapter = new BikesAdapter(getActivity(), (ArrayList<Bike>) bikes);
mAdapter.setCallback(this);
当我将这些行放在 filldata() OnResponse 方法中时:mAdapter.setCallback(this) 无法识别
mAdapter.setCallback(this);
如果我想毫无问题地显示我的回收站视图,我必须删除 mAdapter.setCallback(this); mAdapter = new BikesAdapter(getActivity(), (ArrayList) 自行车); recyclerView.setAdapter(适配器); 在 fillData 内部以在正确的时间获得响应
//我的适配器代码
package com.example.miniprojetandroid.adapters;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.example.miniprojetandroid.R;
import com.example.miniprojetandroid.models.Bike;
public class BikesAdapter extends RecyclerView.Adapter<BikesAdapter.BikesViewHolder> {
private final ArrayList<Bike> bikes;
private Context mContext;
private Callback mCallback;
public BikesAdapter(Context mContext, ArrayList<Bike> bikes) {
this.mContext = mContext ;
this.bikes = bikes;
}
@NonNull
@Override
public BikesAdapter.BikesViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View mItemView = LayoutInflater.from(mContext).inflate(R.layout.bike_list_item, parent, false);
return new BikesViewHolder(mItemView, this);
}
@Override
public void onBindViewHolder(@NonNull BikesAdapter.BikesViewHolder holder, int position) {
final Bike singleItem = bikes.get(position);
holder.BikeName.setText(singleItem.getModel());
holder.BikeImage.setBackgroundResource(singleItem.getImage());
holder.bikeView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mCallback.onItemClicked(singleItem);
}
});
holder.BikeImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(mContext,singleItem.getModel(),Toast.LENGTH_SHORT).show();
}
});
}
@Override
public int getItemCount() {
return bikes.size();
}
public class BikesViewHolder extends RecyclerView.ViewHolder {
public final TextView BikeName;
public final ImageView BikeImage;
public final Button bikeView;
final BikesAdapter mAdapter;
public BikesViewHolder(@NonNull View itemView, BikesAdapter mAdapter) {
super(itemView);
this.BikeName = itemView.findViewById(R.id.bikeName);
this.BikeImage = itemView.findViewById(R.id.bikeImage);
this.bikeView = itemView.findViewById(R.id.btn_view);
this.mAdapter = mAdapter;
}
}
public void setCallback(Callback callback) {
mCallback = callback;
}
public interface Callback {
void onItemClicked(Bike bike);
}
}
//包含回收视图的我的片段
package com.example.miniprojetandroid.ui.fragments;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.example.miniprojetandroid.R;
import java.util.ArrayList;
import java.util.List;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.example.miniprojetandroid.Retrofit.BikeService;
import com.example.miniprojetandroid.Retrofit.RetrofitClient;
import com.example.miniprojetandroid.Retrofit.UserService;
import com.example.miniprojetandroid.adapters.BikesAdapter;
import com.example.miniprojetandroid.models.Bike;
import com.example.miniprojetandroid.models.User;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
public class FragmentOne extends Fragment implements BikesAdapter.Callback{
private BikeService apiService;
private RecyclerView recyclerView;
private List<Bike> bikes = new ArrayList<Bike>();
private BikesAdapter mAdapter;
List<Bike> result = new ArrayList<Bike>();
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_one, container,false);
recyclerView = rootView.findViewById(R.id.recycler_bikes);
recyclerView.setHasFixedSize(true);
recyclerView.setNestedScrollingEnabled(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity(),
LinearLayoutManager.VERTICAL, false));
apiService = RetrofitClient.getClient().create(BikeService.class);
fillData();
mAdapter.setCallback(this);
return rootView;
}
public void fillData(){
Call<List<Bike>> call = apiService.getBikes();
call.enqueue(new Callback<List<Bike>>() {
@Override
public void onResponse(Call<List<Bike>> call, Response<List<Bike>> response) {
if(response.isSuccessful()){
bikes.addAll(response.body());
for(Bike bike: bikes){
bike.setImage(R.drawable.ruebike);
}
Log.e("Bike LIST", bikes.toString());
mAdapter = new BikesAdapter(getActivity(), (ArrayList<Bike>) bikes);
recyclerView.setAdapter(mAdapter);
//listView.setAdapter(new UserAdapter(MainActivity.this, R.layout.list_user, list));
}
}
@Override
public void onFailure(Call<List<Bike>> call, Throwable t) {
Log.e("ERROR: ", t.getMessage());
}
});
/*bikes.add(new Bike(1,"ECO", "RTT" , "44", R.drawable.ruebike ));
bikes.add(new Bike(2,"AAA", "RTT" , "33", R.drawable.ruebike ));
bikes.add(new Bike(3,"BBB", "RUE" , "11", R.drawable.ruebike ));
bikes.add(new Bike(4,"EEE", "SPORT" , "25", R.drawable.ruebike ));
bikes.add(new Bike(5,"CCC", "SPORT" , "77", R.drawable.ruebike ));
Log.e("USERS LIST", bikes.toString());*/
}
@Override
public void onItemClicked(Bike bike) {
Bundle bundle = new Bundle();
bundle.putInt("bike_id",bike.getId());
bundle.putString("model", bike.getModel());
bundle.putString("type", bike.getType());
bundle.putString("price", bike.getPrice());
bundle.putInt("image", bike.getImage());
DetailsFragment f = new DetailsFragment();
f.setArguments(bundle);
getActivity().getSupportFragmentManager()
.beginTransaction()
.replace(R.id.fragmentsContainer, f )
.commit();
}
}
我想做的是两件事: 1/ 使我的片段 recyclerview 使用回调方法与 filldata 一起工作(对于想法 Log.e 表明此方法工作正常) 2/ 确保当我单击回收站视图的一个项目时,我将选定的自行车传递给一个 thired fragmend (DetailsFragment)
错误:当我删除回调时回收器视图是空的,当我使用它时它抛出空异常
请帮帮我
方法 fillData 没有立即执行,因为它包含网络操作,所以它在后台线程上工作,所以当你调用 setCallback 时,mAdapter 将不会被初始化,所以我建议初始化 mAdapter 并在 onCreate 中调用 setAdapter onResponse 方法,您可以将数组作为 null 传递给构造函数,在 onResponse 内部,您可以通过 setter 方法传递自行车 arrayList,并在分配列表后在此方法(setter 方法)中传递“notifyDataSetChanged();”
因此您的适配器将如下所示:
package com.example.miniprojetandroid.adapters;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.example.miniprojetandroid.R;
import com.example.miniprojetandroid.models.Bike;
public class BikesAdapter extends RecyclerView.Adapter<BikesAdapter.BikesViewHolder> {
private final ArrayList<Bike> bikes;
private Context mContext;
private Callback mCallback;
public BikesAdapter(Context mContext, ArrayList<Bike> bikes) {
this.mContext = mContext ;
this.bikes = bikes;
}
public setBikesList(ArrayList<Bike> bikes){
this.bikes=bikes;
notifyDataSetChanged();
}
@NonNull
@Override
public BikesAdapter.BikesViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View mItemView = LayoutInflater.from(mContext).inflate(R.layout.bike_list_item, parent, false);
return new BikesViewHolder(mItemView, this);
}
@Override
public void onBindViewHolder(@NonNull BikesAdapter.BikesViewHolder holder, int position) {
final Bike singleItem = bikes.get(position);
holder.BikeName.setText(singleItem.getModel());
holder.BikeImage.setBackgroundResource(singleItem.getImage());
holder.bikeView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mCallback.onItemClicked(singleItem);
}
});
holder.BikeImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(mContext,singleItem.getModel(),Toast.LENGTH_SHORT).show();
}
});
}
@Override
public int getItemCount() {
return bikes.size();
}
public class BikesViewHolder extends RecyclerView.ViewHolder {
public final TextView BikeName;
public final ImageView BikeImage;
public final Button bikeView;
final BikesAdapter mAdapter;
public BikesViewHolder(@NonNull View itemView, BikesAdapter mAdapter) {
super(itemView);
this.BikeName = itemView.findViewById(R.id.bikeName);
this.BikeImage = itemView.findViewById(R.id.bikeImage);
this.bikeView = itemView.findViewById(R.id.btn_view);
this.mAdapter = mAdapter;
}
}
public void setCallback(Callback callback) {
mCallback = callback;
}
public interface Callback {
void onItemClicked(Bike bike);
}
}
和你的片段:
package com.example.miniprojetandroid.ui.fragments;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.example.miniprojetandroid.R;
import java.util.ArrayList;
import java.util.List;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.example.miniprojetandroid.Retrofit.BikeService;
import com.example.miniprojetandroid.Retrofit.RetrofitClient;
import com.example.miniprojetandroid.Retrofit.UserService;
import com.example.miniprojetandroid.adapters.BikesAdapter;
import com.example.miniprojetandroid.models.Bike;
import com.example.miniprojetandroid.models.User;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
public class FragmentOne extends Fragment implements BikesAdapter.Callback{
private BikeService apiService;
private RecyclerView recyclerView;
private List<Bike> bikes = new ArrayList<Bike>();
private BikesAdapter mAdapter;
List<Bike> result = new ArrayList<Bike>();
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_one, container,false);
recyclerView = rootView.findViewById(R.id.recycler_bikes);
recyclerView.setHasFixedSize(true);
recyclerView.setNestedScrollingEnabled(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity(),
LinearLayoutManager.VERTICAL, false));
apiService = RetrofitClient.getClient().create(BikeService.class);
fillData();
mAdapter = new BikesAdapter(getActivity(),null);
mAdapter.setCallback(this);
recyclerView.setAdapter(mAdapter);
return rootView;
}
public void fillData(){
Call<List<Bike>> call = apiService.getBikes();
call.enqueue(new Callback<List<Bike>>() {
@Override
public void onResponse(Call<List<Bike>> call, Response<List<Bike>> response) {
if(response.isSuccessful()){
bikes.addAll(response.body());
for(Bike bike: bikes){
bike.setImage(R.drawable.ruebike);
}
Log.e("Bike LIST", bikes.toString());
mAdapter.setBikesList(bikes);
//listView.setAdapter(new UserAdapter(MainActivity.this, R.layout.list_user, list));
}
}
@Override
public void onFailure(Call<List<Bike>> call, Throwable t) {
Log.e("ERROR: ", t.getMessage());
}
});
/*bikes.add(new Bike(1,"ECO", "RTT" , "44", R.drawable.ruebike ));
bikes.add(new Bike(2,"AAA", "RTT" , "33", R.drawable.ruebike ));
bikes.add(new Bike(3,"BBB", "RUE" , "11", R.drawable.ruebike ));
bikes.add(new Bike(4,"EEE", "SPORT" , "25", R.drawable.ruebike ));
bikes.add(new Bike(5,"CCC", "SPORT" , "77", R.drawable.ruebike ));
Log.e("USERS LIST", bikes.toString());*/
}
@Override
public void onItemClicked(Bike bike) {
Bundle bundle = new Bundle();
bundle.putInt("bike_id",bike.getId());
bundle.putString("model", bike.getModel());
bundle.putString("type", bike.getType());
bundle.putString("price", bike.getPrice());
bundle.putInt("image", bike.getImage());
DetailsFragment f = new DetailsFragment();
f.setArguments(bundle);
getActivity().getSupportFragmentManager()
.beginTransaction()
.replace(R.id.fragmentsContainer, f )
.commit();
}
}