让我快速解释一下我的代码结构，我有一个带有动态片段的动态标签布局。这些选项卡是从json响应中获取的，每个选项卡都有一个动态片段，其中还包含一个从json响应填充的回收者视图。
我正在尝试将所选标签的ID传递给回收者视图的适配器
1。 TransactionsFragment（创建选项卡布局的位置）
for(int i=0;i<array.length();i++) {
//getting wallet object from json array
JSONObject userWallets=array.getJSONObject(i);
tab.addTab(tab.newTab().setText(userWallets.getString("wallet_name")));
walletID.add(userWallets.getInt("id"));
}
TransactionsPagerAdapter adapter = new TransactionsPagerAdapter
(getChildFragmentManager(), tab.getTabCount(), walletID); //the data i need to pass is the walletID
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tab));
adapter.notifyDataSetChanged();
2。 TransactionsPagerAdapter（适配器控制选项卡）
public class TransactionsPagerAdapter extends FragmentStatePagerAdapter {
int mNumOfTabs;
ArrayList<Integer> walletID;
public TransactionsPagerAdapter(FragmentManager fm, int NumOfTabs, ArrayList<Integer> walletID) {
super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
this.mNumOfTabs = NumOfTabs;
this.walletID = walletID;
}
@Override
public Fragment getItem(int position) {
new DynamicFragment();
return DynamicFragment.newInstance(walletID.get(position)); // the dynamic fragment controlling the recycler view
}
@Override
public int getCount() {
return mNumOfTabs;
}
}
3。 DynamicFragment（在每个选项卡中填充了回收站视图的位置）
for(int i=0;i<array.length();i++) {
//getting wallet object from json array
JSONObject userTransactions=array.getJSONObject(i);
//adding the wallet to wallet list
userTransactionList.add(new Transaction(
userTransactions.getInt("id"),
userTransactions.getInt("wallet_id"),
userTransactions.getDouble("fee"),
userTransactions.getDouble("amount"),
userTransactions.getDouble("from"),
userTransactions.getDouble("to"),
userTransactions.getString("destination_address"),
userTransactions.getString("type"),
userTransactions.getString("created_at")
));
}
//creating adapter object and setting it to recyclerview
TransactionsAdapter adapter = new TransactionsAdapter(getActivity(),childFragmentManager, userTransactionList);
mRecyclerView.setAdapter(adapter);
swipeRefreshLayout.setRefreshing(false);
// stop animating Shimmer and hide the layout
mShimmerViewContainer.stopShimmerAnimation();
mShimmerViewContainer.setVisibility(View.GONE);
// progressDialog.dismiss();
adapter.notifyDataSetChanged();
4。 TransactionsAdapter（控制回收者视图的适配器）
public class TransactionsAdapter extends RecyclerView.Adapter<TransactionsAdapter.DataObjectHolder> {
private static String TAG = TransactionsAdapter.class.getSimpleName();
private Context mCtx;
private FragmentManager fragmentManager;
private ArrayList<Transaction> userTransactionList;
private static MyClickListener myClickListener;
public TransactionsAdapter(Context mCtx, FragmentManager fragmentManager, ArrayList<Transaction> userTransactionList) {
this.mCtx = mCtx;
this.fragmentManager = fragmentManager;
this.userTransactionList = userTransactionList;
}
public static class DataObjectHolder extends RecyclerView.ViewHolder {
TextView transactionamount, transactionstatus, transactionid;
ImageView transactionicon, pendingicon;
public DataObjectHolder(View itemView) {
super(itemView);
transactionamount = (TextView) itemView.findViewById(R.id.amount);
transactionstatus = (TextView) itemView.findViewById(R.id.status);
transactionicon = (ImageView) itemView.findViewById(R.id.tx_icon);
pendingicon = (ImageView) itemView.findViewById(R.id.img_status);
transactionid = (TextView) itemView.findViewById(R.id.wallet_id);
}
}
@Override
public TransactionsAdapter.DataObjectHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(mCtx).inflate(R.layout.transaction_item, parent, false);
final TransactionsAdapter.DataObjectHolder dataObjectHolder = new TransactionsAdapter.DataObjectHolder(view);
return dataObjectHolder;
}
@Override
public void onBindViewHolder(TransactionsAdapter.DataObjectHolder holder, final int position) {
DecimalFormat formatter = new DecimalFormat("###,###,###,###,###.##");
formatter.setDecimalSeparatorAlwaysShown(true);
formatter.setMinimumFractionDigits(2);
Double doubleBalance = userTransactionList.get(position).getTransactionAmount();
String numberFormatBalance = formatter.format(doubleBalance);
holder.transactionstatus.setText(userTransactionList.get(position).getTransactionType());
holder.transactionamount.setText(String.valueOf("₦ " + numberFormatBalance));
if ((userTransactionList.get(position).getTransactionType()).equals("send")) {
holder.transactionicon.setImageResource(R.drawable.ic_communication_call_made);
} else {
holder.transactionicon.setImageResource(R.drawable.ic_communication_call_received);
}
}
@Override
public int getItemCount() {
return userTransactionList.size();
}
public interface MyClickListener {
public void onItemClick(int position, View v);
}
}
我需要将walletID从1（TransactionsFragment）到4（TransactionsAdapter），是否可以，如果可以的话，我知道这实际上不能用bundle完成，因为我们没有创建意图。
Arguments的DynamicFragment，>]DynamicFragment.newInstance(walletID.get(position))
TransactionsAdapter的构造函数，请遵循此private Integer walletId;
public TransactionsAdapter(Context mCtx, FragmentManager fragmentManager, ArrayList<Transaction> userTransactionList, Integer walletId) {
this.mCtx = mCtx;
this.fragmentManager = fragmentManager;
this.userTransactionList = userTransactionList;
this.walletId = walletId;
}
DynamicFragment中，当您初始化TransactionsAdapter从片段的参数中获得walletId时>Integer walletId = getArguments().getInt("your_key") // your key when you newInstance and put to Bundle
TransactionsAdapter adapter = new TransactionsAdapter(getActivity(),childFragmentManager, userTransactionList);
最后，您的适配器具有walletId的信息>