Assigning onClickListeners for buttons through a loop - Android

Question

I know how to accomplish this task through a long non-elegant way but I want to shorten it down and make it more elegant. Below I show what I could do the non-elegant way and how I want to do it elegantly. The elegant way is not compiling. I commented in where and what the error is. Any code structure help is appreciated! Thank you in advance. Results.java ``` public class Results extends Activity { int x = -1; Button q1details, q2details, q3details, q4details, q5details, q6details, q7details, q8details, q9details, q10details; final Context context = this; @Override public void onCreate(Bundle savedInstanceState) { q1details = (Button)findViewById(R.id.q1details); q2details = (Button)findViewById(R.id.q2details); q3details = (Button)findViewById(R.id.q3details); q4details = (Button)findViewById(R.id.q4details); q5details = (Button)findViewById(R.id.q5details); q6details = (Button)findViewById(R.id.q6details); q7details = (Button)findViewById(R.id.q7details); q8details = (Button)findVi…

Accepted Answer

Final references declared in the just outer scope of an anonymous class are accessible to that anonymous class. (Java's flavor of closures):

```
for(int i = 0; i < buttonList.size(); i++) {
    Button button = buttonList.get(i);
    button.setText("Question Details");

final int j = i;

button.setOnClickListener(new OnClickListener() {
        public void onClick(View arg0) {
            x = j;
            displayDetails();
        }
    });
}
```

Assigning onClickListeners for buttons through a loop - Android

Solution

Problem