单击按钮显示警报对话框时，应用崩溃

Question

I created a alert dialog behind the onclick of a button but when i click that button it crashes the app throw the following exception.

java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity 

07-13 11:51:12.445 21054-21054/com.vshine.neuron.riseshine E/MultiWindowProxy: getServiceInstance failed!

in logcat that I couldn't able to understand as I'm new to coding, .Java and Logcat screenshots are attached. This is Logcat :

This is .java class :

Answer 1

just try to inherit Activity instead of AppCompatActivity to your quiz.java activity

like at top of code

public class Quiz extends Activity{

for more check this post.

Answer 2

Ok i think you need to provide context of the Activity. Try this:

new AlertDialog.Builder(YourClassName.this)
                .setTitle("Title")
                .setMessage("Message?")
                .setCancelable(false)
                .setNegativeButton("No", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        //Function on no
                })
                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                       //Function on yes
                    }
                })
                .show();