Using Android AutoCompleteTextView with ArrayAdapter instead of ArrayAdapter

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I wanted to use AutoCompleteTextView in my android application.I know how to use it with simple array of Strings, but I wanted AutoCompleteTextView to use list of Objects t

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醉酒成梦

2020-12-23 18:21

You can override getItem in this adapter, depend on each type to convert it into String

 override fun getItem(position: Int): String? {
        val item = listData[position]
        when (item) {
            is BankItem -> {
                return item.bankName
            }
        ....
 }

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情歌与酒

2020-12-23 18:24

if you are wanna add the data in String[] arr=new String[100]; then its wrong. You can do the same work as in form of ArrayList but remember you will never put here a Getter/Setter class. Just simply declare it. See this example.

Declare in main partition:

 ArrayList<String>arr=new ArrayList<>();

and then initilize it in this way:

 for (int i = 0; i < jsonArray.length(); i++) {
                    JSONObject jsonObject1 = (JSONObject) jsonArray.get(i);
                    String imei = jsonObject1.getString("imei");
                    String name = jsonObject1.getString("name");
                    String my_pic = jsonObject1.getString("my_pic");
                    String email = jsonObject1.getString("email");

                    arr.add(name);
                }


                adapter= new ArrayAdapter<>
                        (this, android.R.layout.select_dialog_item, arr);
                autoCompleteText.setThreshold(1);//will start working from first character
                autoCompleteText.setAdapter(adapter);//setting the adapter data into the AutoCompleteTextView
                autoCompleteText.setTextColor(Color.RED);


            }

I hope this will work for you....

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小鲜肉

2020-12-23 18:42

You can use an AbstractList to get the String representation of each item in your object list.

private void setupAutoComplete(AutoCompleteTextView view, List<T> objects) {
    List<String> names = new AbstractList<String>() {
        @Override
        public int size() { return objects.size(); }

        @Override
        public String get(int location) {
            return objects.get(location).getName();
        }
    };

    view.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, names));
}

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抹茶落季

2020-12-23 18:43

Two ways:

Override toString() in Student class and make it return name. You can get the object that was selected with the following code:

 public static class Student {

    private String name;

        public Student(String name) {
            this.name = name;
        }

        @Override
        public String toString() {
            return name;
        }

    }

AutoCompleteTextView tv = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1);
final ArrayList<Student> list = new ArrayList<MainActivity.Student>();
list.add(new Student("Viru"));
list.add(new Student("Gauti"));
ArrayAdapter<Student> adapter = new ArrayAdapter<MainActivity.Student>(
        this, android.R.layout.simple_dropdown_item_1line, list);
tv.setAdapter(adapter);

tv.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
            long arg3) {
        Student selected = (Student) arg0.getAdapter().getItem(arg2);
        Toast.makeText(MainActivity.this,
                "Clicked " + arg2 + " name: " + selected.name,
                Toast.LENGTH_SHORT).show();
    }
});

Implement a custom adapter (by extending BaseAdapter class or ArrayAdapter<Student> class) Check this tutorial : http://www.ezzylearning.com/tutorial.aspx?tid=1763429

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