在光标中选择的Android微调器项目什么都不显示

Question

我想要的是从工具栏微调器中选择的特定数字接收文本。但我无法在arraylist中显示它。如果我在equalsIgnoreCase("06123456")中放置文本，它会返回文本，但是如果我将字符串String item = adapterView.getItemAtPosition(i).toString();放入其中则不返回任何内容。没有在logcat中找到的错误。这是我的微调器和光标的源代码：

toolbarSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {

            write = (EditText) findViewById(R.id.edittext);
            write.setTextColor(Color.BLACK);

            btnWrite = (Button) findViewById(R.id.buttonSend);
            btnWrite.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    String message = write.getText().toString();
                    Toast.makeText(MainActivity.this, message, Toast.LENGTH_LONG).show();
                }
            });

            ListView chatList = (ListView) findViewById(R.id.chat);

            ArrayList<ChatData> listChat = new ArrayList<ChatData>();

            ContentResolver contentResolver = getContentResolver();
            Cursor cursor2 = contentResolver.query(Uri.parse("content://sms/inbox"), null, null, null, null);
            int indexBody = cursor2.getColumnIndex("body");
            if (indexBody < 0 || !cursor2.moveToFirst()) return;
            while (cursor2.moveToNext()) {
                do {
                    //display sms inbox by number
                    String number = cursor2.getString(cursor2.getColumnIndex("address"));
                    String item = adapterView.getItemAtPosition(i).toString();
                    if (number.equalsIgnoreCase(item)) {
                        String str = cursor2.getString(indexBody);
                        listChat.add(new ChatData(str, false));
                    }
                } while (cursor2.moveToNext());
            }

            ChatRecAdapter adapter = new ChatRecAdapter(MainActivity.this, listChat);

            chatList.setAdapter(adapter);
        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {
            //do nothing
        }
    });

提前致谢！