How to set selected item of Spinner by value, not by position

Solution 1

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.Spinner;

import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

  

import java.util.Arrays;

  

public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {

  

    // on below line we are creating variable for spinner.

    Spinner languageSpinner;

    // on below line we are creating a variable for our list of data to be displayed in spinner.

    String[] languages = {"C++", "Java", "Kotlin", "JavaScript", "Python", "PHP", "C#", "C"};

  

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

  

        // on below line we are initializing spinner with ids.

        languageSpinner = (Spinner) findViewById(R.id.idLanguageSpinner);

  

        // on below line we are initializing adapter for our spinner

        ArrayAdapter<CharSequence> adapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, languages);

  

        // on below line we are setting drop down view resource for our adapter.

        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

  

        // on below line we are setting adapter for spinner.

        languageSpinner.setAdapter(adapter);

  

        // on below line we are adding click listener for our spinner

        languageSpinner.setOnItemSelectedListener(this);

  

        // on below line we are creating a variable to which we have to set our spinner item selected.

        String selection = "Python";

  

        // on below line we are getting the position of the item by the item name in our adapter.

        int spinnerPosition = adapter.getPosition(selection);

  

        // on below line we are setting selection for our spinner to spinner position.

        languageSpinner.setSelection(spinnerPosition);

    }

  

    @Override

    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

        // on below line we are displaying toast message for selected item

        Toast.makeText(MainActivity.this, "" + languages[position] + " Selected..", Toast.LENGTH_SHORT).show();

    }

  

    @Override

    public void onNothingSelected(AdapterView<?> adapterView) {

  

    }

}

Solution 2

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.Spinner;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

public class MainActivity extends AppCompatActivity {

   Spinner spinner;

   String[] FootBallPlayers = new String[]{"Lionel Messi", "Eden Hazard", "Cristiano Ronaldo", "Neymar Jr", "Gareth Bale", "David Bekham"};

   @Override

   protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(R.layout.activity_main);

      spinner = findViewById(R.id.spinner);

      final List<String> plantsList = new ArrayList<>(Arrays.asList(FootBallPlayers));

      final ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<>(this, R.layout.support_simple_spinner_dropdown_item, plantsList);

      spinnerArrayAdapter.setDropDownViewResource(R.layout.spinner_value);

      spinner.setAdapter(spinnerArrayAdapter);

   }

   public void SelectSpinnerValue(View view) {

      spinner.setSelection(2);

   }

}

Solution 3

String compareValue = "some value";

ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.select_state, android.R.layout.simple_spinner_item);

adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

mSpinner.setAdapter(adapter);

if (compareValue != null) {

    int spinnerPosition = adapter.getPosition(compareValue);

    mSpinner.setSelection(spinnerPosition);

}