Android:How to get the text from the Button when c

问题:

This question already has an answer here:

• Get text from pressed button 6 answers

for( i=0; i<26; i++) {

        btnAlpha[i] = new Button(this);
        btnAlpha[i].setBackgroundColor(Color.TRANSPARENT);
        btnAlpha[i].setTextColor(Color.GREEN);
        btnAlpha[i].setText(Character.toString ((char)(j+i)));
        btnAlpha[i].setOnClickListener(new View.OnClickListener(){              
            public void onClick(View v){
            //Want to get the text from the current button.
                             btnAlpha[i].getText();
                            //But it gives error that "i" cannot be accessed.

        }});

The error i get is "cannot refer to a non-final variable inside an inner class defined in a different method". But i need to get the text at that right time. How to do it? Is there any other way to do it? Please Help!

回答1:

Button is a subclass of View, so the argument to onClick, v, is the Button being clicked. Try

public void onClick(View v) {
    ((Button) v).getText();
}

回答2:

create a new variable final int x = i; in the for loop and use x in place of i in the onClick method

edit: actually im not sure this will work correctly. oops. Kype P's answer looks pretty good.