How do I pass the additional parameter to the onClick method?

Question

I want to pass a from my method to the button clicked method.

Method that generates a:

public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
             String str = arg0.getItemAtPosition(arg2).toString();

             double a = 0;

             switch(arg2){

             case 0:
                  a = 4;
                 break;

             case 1:
                 a = 3.75;
                 break;

             case 2:
                 a = 3.50;
                 break;

             case 3:
                 a = 3.25;
                 break;
             case 4:
                 a = 3;
                 break;
             case 5:
                 a = 2.75;
                 break;
             case 6:
                 a = 2.5;
                 break;
             case 7:
                 a = 2.25;
                 break;


             }

Button clicked method

public void button(View v){

}

You are falling victim to scope. You need to make a's scope the entire class instead of just your method. See MrEngineer13's answer for how to move it to a class field variable. Long story short, move the declaration for a to just inside of your activity class scope. — zgc7009, Sep 16 '14 at 17:49
http://stackoverflow.com/questions/10614696/how-to-pass-parameters-to-onclicklistener/10614751#10614751 Shows you how to create your own click listener in to which you can pass additional paramaters — Chris Nevill, Sep 16 '14 at 17:52

score 4 · Accepted Answer · answered Sep 16 '14 at 17:47

4

Make a a field of your activity instead of an instance variable like so:

public class MyActivity extends Activity {

double a = 0;

...

}

answered Sep 16 '14 at 17:47

MrEngineer13

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2

What code? all you need to change in your code is to cut `double a = 0;` line and paste it at the top of your activity class – MrEngineer13 Sep 16 '14 at 17:51

How do I pass the additional parameter to the onClick method?

1 Answers1