以下是我的代码
package com.mypoolin.hybrid_upi;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import com.koushikdutta.ion.Ion;
import com.koushikdutta.ion.builder.Builders;
import com.mypoolin.hybrid_upi.objects.Banks;
import com.mypoolin.mypoolinsupportlibrary.util.Log;
import java.util.ArrayList;
//import com.bumptech.glide.Glide;
public class ListFragment extends Fragment {
private static final String TAG = "BankListFragment";
public static boolean networkFailure = false;
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
// ArrayList<HashMap<String, String>> bankData = new ArrayList<>();
ArrayList<Banks> bankData = new ArrayList<>();
ArrayList<Banks> bankDataOriginl = new ArrayList<>();
RecyclerView recyclerViewBankList;
EditText searchText;
ImageButton imageButtonClearSearch;
SwipeRefreshLayout swipeRefreshLayoutBank;
String transactionType = "T";
// TODO: Rename and change types of parameters
int confirmed = 0;
int upi = 0;
int forWalletRedeem = 0;
private OnFragmentInteractionListener mListener;
private RecyclerView.Adapter mAdapter;
public ListFragment() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @return A new instance of fragment BankListFragment.
*/
// TODO: Rename and change types and number of parameters
public static BankListFragment newInstance(ArrayList<Banks> param1, String transactionType) {
BankListFragment fragment = new BankListFragment();
Bundle args = new Bundle();
args.putSerializable("bankList", param1);
args.putString("transactionType", transactionType);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
if (getArguments().containsKey("bankList")) {
bankDataOriginl = (ArrayList<Banks>) getArguments().getSerializable("bankList");
bankData = (ArrayList<Banks>) getArguments().getSerializable("bankList");
}
if (getArguments().containsKey("transactionType")) {
transactionType = getArguments().getString("transactionType");
}
}
// MyPoolinUtil.hideSoftInput(getActivity());
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_bank_list, container, false);
loadView(view, bankDataOriginl);
return view;
}
private void loadView(View view, ArrayList<Banks>list) {
Log.d(TAG,"test list:"+list);
searchText = (EditText) view.findViewById(R.id.searchEditText);
imageButtonClearSearch = (ImageButton) view.findViewById(R.id.imageButtonClearSearch);
imageButtonClearSearch.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
searchText.setText("");
}
});
swipeRefreshLayoutBank = (SwipeRefreshLayout) view.findViewById(R.id.swipe_refresh_layout_bank_list);
recyclerViewBankList = (RecyclerView) view.findViewById(R.id.bankListRecyclerView);
//recyclerViewBankList.addItemDecoration(new DividerItemDecoration(getActivity().getApplicationContext(), DividerItemDecoration.VERTICAL_LIST));
// use this setting to improve performance if you know that changes
// in content do not change the layout size of the RecyclerView
recyclerViewBankList.setHasFixedSize(true);
// use a linear layout manager
recyclerViewBankList.setLayoutManager(new LinearLayoutManager(getActivity()));
// create an Object for Adapter
mAdapter = new BankDataAdapter(getActivity().getApplicationContext(), bankData);
// set the adapter object to the Recyclerview
recyclerViewBankList.setAdapter(mAdapter);
//recyclerViewBankList.addItemDecoration(new DividerItemDecoration(getActivity(), DividerItemDecoration.VERTICAL_LIST));
try {
searchText.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
if (s.toString().isEmpty()) {
imageButtonClearSearch.setVisibility(View.GONE);
} else {
imageButtonClearSearch.setVisibility(View.VISIBLE);
}
String name = s.toString();
Log.e(this.getClass().getName(), name);
swapList(name);
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
private void swapList(String name) {
ArrayList<Banks> newList = new ArrayList<Banks>();
if (name.trim().isEmpty()) {
//this.contactList=contactListoriginal;
mAdapter = new BankDataAdapter(getActivity().getApplicationContext(), bankDataOriginl);
// set the adapter object to the Recyclerview
recyclerViewBankList.setAdapter(mAdapter);
} else {
mAdapter = new BankDataAdapter(getActivity().getApplicationContext(), bankData);
for (Banks c : bankData) {
if (containsName(name, c.getBankName())) {
newList.add(c);
}
}
mAdapter = new BankDataAdapter(getActivity().getApplicationContext(), newList);
recyclerViewBankList.setAdapter(mAdapter);
mAdapter.notifyDataSetChanged();
}
}
public boolean containsName(String s, String name) {
if (s != null && name != null) {
int l = s.length();
if (name.length() >= l && name.substring(0, l).equalsIgnoreCase(s)) {
return true;
}
else {
String[] names = name.split("[\\s]+");
for (String n : names) {
if (n.length() >= l && n.substring(0, l).equalsIgnoreCase(s))
return true;
}
}
}
return false;
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
/* if (context instanceof OnFragmentInteractionListener) {
mListener = (OnFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement OnFragmentInteractionListener");
}*/
}
@Override
public void onDetach() {
super.onDetach();
/* mListener = null;*/
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
private class BankDataAdapter extends RecyclerView.Adapter<BankDataAdapter.ViewHolder> {
Context context;
private ArrayList<Banks> bankList;
public BankDataAdapter(Context context, ArrayList<Banks> contactList) {
this.bankList = contactList;
this.context = context;
//ImageLoader imageLoader = ImageLoader.getInstance();
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemLayoutView = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_row_bank_list, null);
// create ViewHolder
ViewHolder viewHolder = new ViewHolder(itemLayoutView);
return viewHolder;
}
@Override
public void onBindViewHolder(ViewHolder viewHolder, int position) {
final int pos = position;
viewHolder.textViewBankName.setText(bankList.get(pos).getBankName());
// viewHolder.imageViewBankLogo.setImageURI(Uri.parse("http://hybridsdk.mypoolin.com/get_bank_image/" + bankList.get(pos).getBankCode()));
/*Glide.with(context)
.load("http://hybridsdk.mypoolin.com/get_bank_image/"+bankList.get(pos).getBankCode())
.asBitmap()
//.error(MyPoolinUtil.getDrawableFromText(position, bankList.get(position).getBankName(), context))
.into(viewHolder.imageViewBankLogo);*/
Ion.with(viewHolder.imageViewBankLogo)
//.error(MyPoolinUtil.getDrawableFromText(position, bankList.get(position).getBankName(), context))
.load("http://mypoolin.com/hybrid_upi/get_bank_image/" + bankList.get(pos).getBankCode());
}
@Override
public int getItemCount() {
return bankList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView textViewBankName;
public ImageView imageViewBankLogo;
public ViewHolder(View itemLayoutView) {
super(itemLayoutView);
imageViewBankLogo = (ImageView) itemLayoutView.findViewById(R.id.imageViewBankLogo);
textViewBankName = (TextView) itemLayoutView.findViewById(R.id.textViewBankName);
itemLayoutView.setOnClickListener(this);
}
@Override
public void onClick(View v) {
int position = getAdapterPosition(); // gets item position
if (position != RecyclerView.NO_POSITION) { // Check if an item was deleted, but the user clicked it before the UI removed it
Banks user = bankList.get(position);
// We can access the data within the views
// Toast.makeText(context, bankList.get(position).getBankName() + s, Toast.LENGTH_SHORT).show();
Intent returnIntent = new Intent();
Bundle bundle = new Bundle();
bundle.putString("bankName", bankList.get(position).getBankName());
bundle.putString("bankCode", bankList.get(position).getBankCode());
bundle.putString("transactionType", transactionType);
returnIntent.putExtras(bundle);
getActivity().setResult(Activity.RESULT_OK, returnIntent);
getActivity().finish();
}
}
}
}
}
我在片段的onCreate方法中从getExtra获取了银行列表数据，我将银行列表数据保存为Arraylist作为bankdata和bankoriginaldata，我的问题是我无法在swaplist方法中获取银行列表数据，并且搜索功能无效。在foreach循环库数据变为null之前的交换列表方法中，但是我在加载视图方法中有银行数据，但在交换列表中没有。任何人都可以告诉我们发生了什么吗？ 如何解决上述问题？我想知道为什么银行数据在交换方法中变为空以及如何访问它。 我案例中的搜索功能是否会按预期工作？
答案 0 :(得分：0)
private void swapList(String name) {
bankData.clear();
if (name.trim().isEmpty()) {
bankData.addAll(bankDataOriginl);
} else {
for (Banks c : bankDataOriginl) {
if (containsName(name, c.getBankName())) {
bankData.add(c);
}
}
}
mAdapter.notifyDataSetChanged();
}
更改你的swapList方法。
在你的oncreate方法中再改变一件事
if (getArguments() != null) {
if (getArguments().containsKey("bankList")) {
bankDataOriginl = (ArrayList<Banks>) getArguments().getSerializable("bankList");
}
if (getArguments().containsKey("transactionType")) {
transactionType = getArguments().getString("transactionType");
}
}
从loadView调用swapList（“”）。