带有自定义适配器的 Android AutoCompleteTextView

Question

我陷入了与此非常相似的情况：Android: Using item selected in AutoCompleteTextView to populate another field

在 SO 阅读了这么多帖子和答案数小时后，我设法达到了 AutoCompleteTextView 正在使用自定义 XML 布局填充客户列表（我需要的自定义对象/ POJO）的地步，但我得到了这个错误似乎是由于索引逻辑而发生的：

java.lang.IndexOutOfBoundsException：索引：2，大小：2 在 java.util.ArrayList.get(ArrayList.java:437) 在 irisdesigns.studio.jewellery.Model.CustomerAutoAdapter.getView(CustomerAutoAdapter.java:76) 在 android.widget.AbsListView.obtainView(AbsListView.java:2365) 在 android.widget.DropDownListView.obtainView(DropDownListView.java:305) 在 android.widget.ListView.measureHeightOfChildren(ListView.java:1408) 在 android.widget.ListPopupWindow.buildDropDown(ListPopupWindow.java:1257) 在 android.widget.ListPopupWindow.show(ListPopupWindow.java:613) 在 android.widget.AutoCompleteTextView.showDropDown(AutoCompleteTextView.java:1217) 在 android.widget.AutoCompleteTextView.updateDropDownForFilter(AutoCompleteTextView.java:1086) 在 android.widget.AutoCompleteTextView.onFilterComplete(AutoCompleteTextView.java:1068) 在 android.widget.Filter$ResultsHandler.handleMessage(Filter.java:285) 在 android.os.Handler.dispatchMessage(Handler.java:106) 在 android.os.Looper.loop(Looper.java:164) 在 android.app.ActivityThread.main(ActivityThread.java:6494) 在 java.lang.reflect.Method.invoke（本机方法） 在 com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)

有人可以帮忙吗？ 适配器代码：

public class CustomerAutoAdapter extends ArrayAdapter implements Filterable {

    private ArrayList<CustomerSuggestion> customerSuggestions, filteredList;


    public CustomerAutoAdapter(Context context, ArrayList<CustomerSuggestion> customerSuggestions) {
        super(context, 0, customerSuggestions);
        this.customerSuggestions = customerSuggestions;
        this.filteredList = customerSuggestions;
    }



    @Nullable
    @Override
    public CustomerSuggestion getItem(int position) {
        return customerSuggestions.get(position);
    }


    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = convertView;
        if (convertView == null) {
            view = LayoutInflater.from(parent.getContext()).inflate(R.layout.litem_customer_autocomplete, parent, false);
        }
        CustomerSuggestion customerSuggestion = filteredList.get(position);
        if (customerSuggestion != null) {
            ((TextView) view.findViewById(R.id.tv_cust_auto_name)).setText(customerSuggestion.getCustomer().getName());
            ((TextView) view.findViewById(R.id.tv_cust_auto_ph)).setText(customerSuggestion.getCustomer().getPh1());
            ((TextView) view.findViewById(R.id.tv_cust_auto_email)).setText(customerSuggestion.getCustomer().getEmail());
        }
        return view;
    }


    @Override
    public Filter getFilter() {
        return filter;
    }


    // Custom Filter implementation for custom suggestions we provide.
    private Filter filter = new Filter() {
        @Override
        public CharSequence convertResultToString(Object resultValue) {
            return ((CustomerSuggestion) resultValue).getCustomer().getName();
        }


        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            if (constraint != null && constraint.length()>1) {
                ArrayList<CustomerSuggestion> filteredList = new ArrayList<>();
                for (CustomerSuggestion customerSuggestion : customerSuggestions)
                    if (customerSuggestion.getCustomer().getName().toLowerCase().contains(constraint.toString().toLowerCase()))
                        filteredList.add(customerSuggestion);

                FilterResults filterResults = new FilterResults();
                filterResults.values = filteredList;
                filterResults.count = filteredList.size();
                return filterResults;
            } else
                return new FilterResults();
        }


        @SuppressWarnings("unchecked")
        @Override
        protected void publishResults(CharSequence constraint, FilterResults results) {
            if (results != null && results.count > 0) {
                filteredList = (ArrayList<CustomerSuggestion>) results.values;
                notifyDataSetChanged();
            }
            else
                filteredList = customerSuggestions;
        }
    };
}

MainActivity 代码： Text Watched 和 setAdapter

final CustomerAutoAdapter customerAutoAdapter = new CustomerAutoAdapter(getApplicationContext(),customerSuggestions);
            et_customer_name.setAdapter(customerAutoAdapter);

            et_customer_name.addTextChangedListener(new TextWatcher() {
                @Override
                public void onTextChanged(CharSequence s, int start, int before, int count) {
                }

                @Override
                public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                }

                @Override
                public void afterTextChanged(Editable s) {
                    // you can use runnable postDelayed like 500 ms to delay search text
                    cust_key = "";
                    if (userExists) {
                        et_phone1.setText("");
                        et_cc_phone1.setText("+91");
                        et_phone2.setText("");
                        et_cc_phone2.setText("");
                        et_email.setText("");
                        tv_btn_od_create_phone.setText("+ Phone");

                        et_phone1.setEnabled(true);
                        et_cc_phone1.setEnabled(true);
                        et_phone2.setEnabled(true);
                        et_cc_phone2.setEnabled(true);
                        et_email.setEnabled(true);
                        tv_btn_od_create_phone.setEnabled(true);

                        tv_btn_od_create_phone.setVisibility(View.VISIBLE);
                        et_phone2.setVisibility(View.GONE);
                        et_cc_phone2.setVisibility(View.GONE);
                    }
                    userExists = false;
                    // customerAutoAdapter.filter(et_customer_name.getText().toString());
                }
            });

AutoCompleteTextView setOnClickListener：

et_customer_name.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
                    cust_key = customerSuggestions.get(position).getCust_key();
                    autoFillData(position);
                    userExists = true;
                }
            });

Answer 1

在这一行 CustomerSuggestion customerSuggestion = filteredList.get(position); 尝试使用原始列表而不是过滤后的列表，如下所示。

CustomerSuggestion customerSuggestion = customerSuggestions.get(position);

经过一番搜索，我认为这是因为这种适配器的主列表是原始列表而不是过滤后的列表，因此引用原始列表调用get view方法！