android - 自动完成 TextView : AfterTextChange and OnItemClick working together

Question

我在我的应用程序中添加了 AutoCompleteTextView。我在其中对这两种方法进行了编码，即 afterTextChange() 如果一个人写了完整的单词并且不点击建议和 OnItemClickListener() 如果用户点击 sugesstion 但问题是这两种方法一起工作。如果我使用 onItemClick 单击建议，那么 afterTextChange( ) 也可以工作并且我的代码运行两次。如何防止两种方法不同时运行。

OnAfterTextChange()代码

 actvShop_name.addTextChangedListener(new TextWatcher() {

        @Override
        public void afterTextChanged(Editable s) {

                   actvShop_name.setVisibility(View.VISIBLE);
            txtShop.setVisibility(View.GONE);
            //do nothing
            if ((actvShop_name.getText().length() != 0) && actvShop_name.getText().length() >= 3) {
                modelShopDetailsArrayList = databaseHelper.getShopDetail(actvShop_name.getText().toString(), language);

                Log.e("TAG", "onKeyDown:Add " + modelShopDetailsArrayList.size() + " " + actvShop_name.getText().toString() + language);

                if (modelShopDetailsArrayList.size() != 0) {

                    HashMap<String, String> shopDetails = session.getSelectedShopDetail();

                    Log.e("TAG", "onItemClick: " + shopDetails.get("shop_name_nl") + "  ");

                    if (shop_name != null) {

                        if (shop_name == actvShop_name.getText().toString()) {

                            InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(
                                    Context.INPUT_METHOD_SERVICE);
                            imm.hideSoftInputFromWindow(actvShop_name.getApplicationWindowToken(), 0);

                            fillShopDetails(actvShop_name.getText().toString());

                        } else {


                            AlertDialog.Builder alertDialog = new AlertDialog.Builder(getActivity());
                            alertDialog.setMessage(R.string.delete_cart);
                            alertDialog.setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {

                                    DatabaseHelper databaseHelper = new DatabaseHelper(getActivity());
                                    databaseHelper.deleteCart();

                                    InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(
                                            Context.INPUT_METHOD_SERVICE);
                                    imm.hideSoftInputFromWindow(actvShop_name.getApplicationWindowToken(), 0);

                                    fillShopDetails(actvShop_name.getText().toString());


                                }
                            });
                            alertDialog.setNegativeButton(R.string.no
                                    , new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int which) {
                                            dialog.cancel();
                                        }
                                    });
                            alertDialog.show();


                        }

                    } else {
                        InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(
                                Context.INPUT_METHOD_SERVICE);
                        imm.hideSoftInputFromWindow(actvShop_name.getApplicationWindowToken(), 0);

                        fillShopDetails(actvShop_name.getText().toString());
                    }

OnItemClickListener() 代码

 actvShop_name.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {


          //  actvShop_name.removeTextChangedListener(textWatcher);

            shop_name_entered = adapterView.getItemAtPosition(i).toString();

            actvShop_name.setVisibility(View.GONE);
            txtShop.setVisibility(View.VISIBLE);
            txtShop.setText(shop_name_entered);


            HashMap<String, String> shopDetails = session.getSelectedShopDetail();

            Log.e("TAG", "onItemClick: " + shopDetails.get("shop_name_nl") + "  " + shop_name_entered);

            if (shop_name != null) {

                if (shop_name.equals(shop_name_entered)) {

                    InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(
                            Context.INPUT_METHOD_SERVICE);
                    imm.hideSoftInputFromWindow(actvShop_name.getApplicationWindowToken(), 0);

                    fillShopDetails(shop_name_entered);

                } else {

                    AlertDialog.Builder alertDialog = new AlertDialog.Builder(getActivity());
                    alertDialog.setMessage(R.string.delete_cart);
                    alertDialog.setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {

                            DatabaseHelper databaseHelper = new DatabaseHelper(getActivity());
                            databaseHelper.deleteCart();

                            InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(
                                    Context.INPUT_METHOD_SERVICE);
                            imm.hideSoftInputFromWindow(actvShop_name.getApplicationWindowToken(), 0);

                            fillShopDetails(shop_name_entered);


                        }
                    });
                    alertDialog.setNegativeButton(R.string.no
                            , new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                    dialog.cancel();
                                }
                            });
                    alertDialog.show();
                }

            } else {
                InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(
                        Context.INPUT_METHOD_SERVICE);
                imm.hideSoftInputFromWindow(actvShop_name.getApplicationWindowToken(), 0);

                fillShopDetails(shop_name_entered);
            }


        }
    });


    actvShop_name.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            actvShop_name.setVisibility(View.VISIBLE);
            txtShop.setVisibility(View.GONE);
        }
    });
    txtShop.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            actvShop_name.setVisibility(View.VISIBLE);
            txtShop.setVisibility(View.GONE);
        }
    });

对话框打开了两次，因为这两种方法同时运行。

Answer 1

我遇到了你现在面临的同样问题。

当我们使用 addTextChangedListener 时，当您的 EditText 发生任何更改时，无论是通过键入还是以编程方式设置文本(例如从中选择一个值)，它都会触发列表，然后在 Edittext 上设置)

您可以使用这两种方法。

1. 从 AutoCompleteTextView 中禁用 addTextChangedListener 监听器。为此点击here
2. 尝试查看可见性(我已成功使用)。为此，您需要在 AutoCompleteTextView 上创建一个新 View (您可以创建 TextView)并将 View 的可见性设置为 GONE默认情况下，我们将以编程方式播放 View 可见性，就像在 addTextChangedListener 中使用下面的代码

代码:

  @Override
    public void afterTextChanged(Editable s) {
        //do nothing
    YOUR_AUTO_COMPLTE_TEXTVIEW.setVisibility(View.VISIBLE);
    YOUR_TEXTVIEW.setVisibility(View.GONE);

    }

在 setOnItemClickListener 中，我们需要再次播放 View 可见性，如下所示，并在新的 Textview 上设置设置文本，检查如下:-

actvShop_name.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

                YOUR_AUTO_COMPLTE_TEXTVIEW.setVisibility(View.GONE);
                YOUR_TEXTVIEW.setVisibility(View.VISIBLE);

            }
}

然后点击 YOUR_AUTO_COMPLTE_TEXTVIEW 和 YOUR_TEXTVIEW 来设置 View 可见性，如下所示

YOUR_AUTO_COMPLTE_TEXTVIEW.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                YOUR_AUTO_COMPLTE_TEXTVIEW.setVisibility(View.VISIBLE);
                YOUR_TEXTVIEW.setVisibility(View.GONE);
            }
        });
        YOUR_TEXTVIEW.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                YOUR_AUTO_COMPLTE_TEXTVIEW.setVisibility(View.VISIBLE);
                YOUR_TEXTVIEW.setVisibility(View.GONE);
            }
        });