CODEWITHSUNDEEP
javaandroidandroid-layoutandroid-studioandroid-spinner
Berk
Berk

Reputation: 3

How to handle multiple spinner selected item comparison?

I am trying to get my app to display either a text or an image when two spinners selected values equal each other.

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Spinner sp1 =(Spinner)findViewById(R.id.sp1);
        String txtFromSpinner1 = sp1.getSelectedItem().toString();

        Spinner sp2 = (Spinner)findViewById(R.id.sp2);
        String txtFromSpinner2 = sp2.getSelectedItem().toString();

        if (txtFromSpinner1.equals(1)&& txtFromSpinner2.equals(2)){

            TextView textElement = (TextView)findViewById(R.id.txResult);
            textElement.setText("3");

        }
    }
}

Upvotes: 0

Views: 1381

Answers (3)

Jas
Jas

Reputation: 3212

Try this:

Spinner sp1 =(Spinner)findViewById(R.id.sp1);
Spinner sp2 = (Spinner)findViewById(R.id.sp2);
TextView textElement = (TextView)findViewById(R.id.txResult);              
Button showResult = (Button)findViewById(R.id.btnShowResult);

showResult.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
           String txtFromSpinner1 = sp1.getSelectedItem().toString();
         String txtFromSpinner2 = sp2.getSelectedItem().toString();

         if (txtFromSpinner1.equals("1")&& txtFromSpinner2.equals("2"))
                textElement.setText("3");


        }
    });

Upvotes: 2

ΦXocę 웃 Пepeúpa ツ
ΦXocę 웃 Пepeúpa ツ

Reputation: 48278

txtFromSpinner1.equals(1) is not going to work because you are comparing a string against a number and that will return false,

you need instead to compare the strings of the spinners.

... 

txtFromSpinner1.equals(txtFromSpinner2)

OR using quotes in your literals

if (txtFromSpinner1.equals("1")&& txtFromSpinner2.equals("2")){

Upvotes: 0

Farhad
Farhad

Reputation: 12986

For comparing the two spinners selected values, you should use 

String spinnerOne = mySpinnerOne.getSelectedItem().toString() ;
String spinnerTwo = mySpinnerTwo.getSelectedItem().toString() ;

Since spinnerOne and spinnerTwo are both java strings, you should use the equals method to compare them.

if(spinnerOne.equals(spinnerTwo))

Finally, for handling the changes in the spinners selection, every time the user selects a new value, you should use onItemSelectedListener() :

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

    @Override
    public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
        // your code here
    }

    @Override
    public void onNothingSelected(AdapterView<?> parentView) {
        // your code here
    }

});

Upvotes: 0

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