[Solved] Android AlertDialog wont came out for instance [closed]

Question

Your class TestActivity must extend AppCompatActivity class so that the onCreate method could be overriden. Your class isn’t using Inheritance or Interface Implementation, that’s why @Override annotation is throwing error.

public class TestActivity extends AppCompatActivity

Second, your code for showing Toast is wrong. This is how you can fix that.

    Toast.makeText(this, id+"/"+pass, Toast.LENGTH_SHORT).show();

Third, remove @Override annotation from the method you’re using for showing toast and also rename it to something else because it should not be same as the class name.

public void showToast(String id, String pass) {
    Toast.makeText(this, id+"/"+pass, Toast.LENGTH_SHORT).show();
}

Accepted Answer

Your class TestActivity must extend AppCompatActivity class so that the onCreate method could be overriden. Your class isn’t using Inheritance or Interface Implementation, that’s why @Override annotation is throwing error.

public class TestActivity extends AppCompatActivity

Second, your code for showing Toast is wrong. This is how you can fix that.

    Toast.makeText(this, id+"/"+pass, Toast.LENGTH_SHORT).show();

Third, remove @Override annotation from the method you’re using for showing toast and also rename it to something else because it should not be same as the class name.

public void showToast(String id, String pass) {
    Toast.makeText(this, id+"/"+pass, Toast.LENGTH_SHORT).show();
}