You need to use a Theme.AppCompat theme (or descendant) with this activity. Change to Theme.AppCompat causes other error

Question

I use appcompat v22.1.0 in my App and use Toolbar. Everything was fine when I use Theme.AppCompat.Light.NoActionBar. When I start implement AlertDialog

Answer 1

getSupportActionBar().getThemedContext()

AlertDialog.Builder builder;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    builder = new AlertDialog.Builder(getSupportActionBar().getThemedContext(), android.R.style.Theme_Material_Dialog_Alert);
} else {
    builder = new AlertDialog.Builder(getSupportActionBar().getThemedContext());
}
builder.setTitle("Alert Dialog")
       .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {

            }
        })
       .setIcon(android.R.drawable.ic_dialog_alert)
       .show();