java - 从alertDialog内的onClickListener访问全局变量

Question

在标记行str中要求我将str设置为局部变量

public void alertShow(String s){
    //Game Ended...!!!
    android.support.v7.app.AlertDialog.Builder alertDialog = new android.support.v7.app.AlertDialog.Builder(this);

    // Setting Dialog Title
    if(s.equals("You") || (s.contains("P")))
        alertDialog.setTitle("Congratulations...");
    else
        alertDialog.setTitle("Game's Up...");

    // Setting Dialog Message
    if(s.equals("You") || s.contains("P"))
        alertDialog.setMessage(s+" Win The Game...");
    else
        alertDialog.setMessage("You Lose... I Win...");

    final ImageView img = new ImageView(this);
    if(s.equals("You") || (s.contains("P")))
        img.setImageResource(R.drawable.firecrackers);
    else
        img.setImageResource(R.drawable.mmm);

    alertDialog.setView(img);

    // Setting Dialog Cancellation
    alertDialog.setCancelable(false);

    // Setting Positive "Yes" Button

    //==================Here Problem Starts==========================

    SessionClass sessionClass = new SessionClass();
    final String str = sessionClass.getPlayer();
    alertDialog.setPositiveButton("Try Again", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {
            Intent i;
            if (str.contains("1"))
                i = new Intent(MainActivity2.this, Toss.class);
            else
                i = new Intent(MainActivity2.this, Game2.class);
            startActivity(i);
            finish();
        }
    });

    //=====================================================

    // Setting Negative "NO" Button
    alertDialog.setNegativeButton("Main Menu", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {
            Intent i = new Intent(MainActivity2.this, MainActivity2.class);
            startActivity(i);
            finish();
        }
    });

    // Showing Alert Message
    alertDialog.show();
}

我想从onClickListener访问str，它是在onClickListener之外声明的。我已尝试以下代码，但它没有访问该变量。

Answer 1

您需要将str变量标记为final，然后您可以从onClickListener访问它