Alert Dialogue in Android-beginners

Question

I am trying to create a simple alert dialogue and I am following the steps from this link However,I am getting the error: getActivity() can't be resolved After some search I understood that getActivity() can be user defined, but I am not sure what should I make it do.

Here is what I have:

public void about(View v1) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
// Add the buttons
        builder.setNeutralButton(R.string.close, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                finish();//go to the previous activity
            }
        });
        
// Set other dialog properties
        builder.setMessage(R.string.myName);

// Create the AlertDialog
        AlertDialog dialog = builder.create();}

• What is wrong with this approach?
• Is there any other better approach you can suggest?
• oh, and what should getActivity() be used for?

Answer 1

// in a fragment
    new AlertDialog.Builder(getContext())
                            .setTitle("Alert title")
                            .setMessage("Alert Message")
                            .setCancelable(false)
                            .setPositiveButton("ok", new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {

                                }
                            }).show();

Answer 2

getActivity() is fragments method to get Activity. If u are in activity u just need to replace this by YourActivityClassName.this