Android 带有自定义适配器的 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后，我已经设法达到了 AutoCompleteTextView 使用自定义 XML 填充客户列表（我需要的自定义对象/POJO）的地步布局，但我收到此错误，这似乎是由于索引逻辑引起的：

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

经过一番查找，我认为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，所以调用获取视图方法是指原始列表！

Android 带有自定义适配器的 AutoCompleteTextView

Android AutoCompleteTextView with custom Adapter

java

android

adapter

android-arrayadapter