Question

I have a problem in alert dialog builder. I can’t change alert box background color. Please resolve my problem.

I write some code for alert builder to show alert message and icon, but I can’t set background:

protected Dialog onCreateDialog(int id) {

    // TODO Auto-generated method stub
    switch (id) {
        case 0:

            AlertDialog.Builder builder = new AlertDialog.Builder(this);

            builder.setIcon(R.drawable.alert);
            builder.setTitle("*Select Valid Location");
            builder.setCancelable(false)
                .setPositiveButton("Ok", null);
            AlertDialog alert = builder.create();

            alert.show();
            break;

Answer 1

Just create any Activity you want with whatever layout you want, and apply android:theme="@android:style/Theme.Dialog" to your <application> tag in your manifest
The answer was copied from a similar question here