CODEWITHSUNDEEP
javaandroid
user532648
user532648

Reputation: 47

Android: Trying to create a spinner with items based on another spinner's item selected

I have a spinner with items mg, g, micrograms, kg. If I select mg, I want the 2nd spinner updated with mg and g items only. But when the use the if logic I get " The method createFromResource(Context, int, int) in the type ArrayAdapter is not applicable for the argume" error.

public class MyOnItemSelectedListener implements OnItemSelectedListener{

    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id){
    String str = parent.getItemAtPosition(pos).toString();

    final TextView result = (TextView) findViewById(R.id.textView5);

    if (str.equals("mg")){
        Spinner spinner1 = (Spinner) findViewById(R.id.spinner2);

        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.units, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner1.setAdapter(adapter);
        //result.setText("testing");
    }
    else {
        result.setText("micrograms");
    }

    }

    @Override
    public void onNothingSelected(AdapterView parent){}
}

Upvotes: 0

Views: 212

Answers (1)

drew moore
drew moore

Reputation: 32690

Your problem is on this line: 

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

The first argument here takes a Context. Because you're calling it from a listener, which is its own class, this refers to the listener, not to your activity. You need to pass a reference to your activity in through the constructor of your listener class, and replace this with a reference to that activity context.

Upvotes: 1

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