Chuyển arrayList sang array để làm chức năng lưu và autoCompleteTextView

arrayListAutoText = new ArrayList<>();

arrayListAutoText .add("Đội");

arrayListAutoText .add("Team");

arrayListAutoText .add("Giám khảo");

arrayListAutoText .add("judgus");

arrayText = arrayListAutoText.toArray(new String[0]); //arrayList.toArray(new String[arrayList.size()]);

ArrayAdapter<String> adapter = new ArrayAdapter<>(this

, R.layout.support_simple_spinner_dropdown_item, arrayText);

editText.setAdapter(adapter);

editText.setThreshold(1);

button.setOnClickListener(v -> {

String Text = editText.getText().toString();

if (!Text.equals("")) {

arrayListAutoText.add(Text);

arrayText = arrayListAutoText.toArray(new String[0]);

adapter.notifyDataSetChanged();

}

});

editText.addTextChangedListener(new TextWatcher() {

@Override

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

}

@Override

public void onTextChanged(CharSequence s, int start, int before, int count) {

arrayText = arrayListAutoText.toArray(new String[0]);

ArrayAdapter<String> adapterAutoFind

= new ArrayAdapter<>(Activity.this

, R.layout.support_simple_spinner_dropdown_item, arrayAutoText);

editText.setAdapter(adapter);

editText.setThreshold(1);

}

@Override

public void afterTextChanged(Editable s) {

}

});