Bad window token, you cannot show a dialog before an Activity is created or after it's hidden

Question

I am using an AppIntro library in my app.

It has 3 slides. I want to ask the user something when the third slide is shown. To achieve that I am using material dialogs b

Answer 1

public class MainActivity extend Activity{

    MaterialDialog dialog;

    protected void onCreate(Bundle savedInstanceState) {

        dialog =  new MaterialDialog.Builder(OrderInfoActivity.this)
                .title("Reject?")
                .content("Are you reject this order?")
                .onPositive(new MaterialDialog.SingleButtonCallback() {
                    @Override
                    public void onClick(MaterialDialog dialog, DialogAction which) {
                        Toast.makeText(OrderInfoActivity.this, "Option1", Toast.LENGTH_SHORT).show();
                        }
                })
                .onNeutral(new MaterialDialog.SingleButtonCallback() {
                    @Override
                    public void onClick(MaterialDialog dialog, DialogAction which) {
                        Toast.makeText(OrderInfoActivity.this, "Option 2", Toast.LENGTH_SHORT).show();
                    }
                })
                .onNegative(new MaterialDialog.SingleButtonCallback() {
                    @Override
                    public void onClick(MaterialDialog dialog, DialogAction which) {
                        Toast.makeText(OrderInfoActivity.this, "Option 3", Toast.LENGTH_SHORT).show();
                    }
                }).build();

        accept.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                  dialog.show();
            }
        });
    }
}

Here is what i'm using right now, and it's working

Hope it helps :)