How can I fix this error: You need to use a Theme.AppCompat theme (or descendant) with this activity

Question

I searched all internet web sites to fix this error, but I couldn\'t. I just want to create AlertDialog with two button Yes and No.

This is my code:

impo         


        

Answer 1

I face such a case and I was managed to solve it. Here it is:

• define your Alert Dialog in MainActivity class, example:

public class MainActivity extends AppCompatActivity {

   AlertDialog.Builder alertDialog;

• then initialize it on OnCreate() method just like below:

alertDialog = new AlertDialog.Builder(this);

• then you can do the rest of alert Dialog customization like icon, title, message anywhere you like. in my case i used it in onFinish() of count down timer as shown below:

public void onFinish() {

                alertDialog.setIcon(android.R.drawable.alert_light_frame);
                alertDialog.setTitle("You are done");
                alertDialog.setMessage("you got it");
                alertDialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        runTheCode();
                    }
                });
                alertDialog.show();