package androidx.core.app; import android.app.Dialog; import android.os.Build; import android.view.View; import androidx.annotation.NonNull; public class DialogCompat { private DialogCompat() { } @NonNull public static View requireViewById(@NonNull Dialog dialog, int i) { if (Build.VERSION.SDK_INT >= 28) { return dialog.requireViewById(i); } View findViewById = dialog.findViewById(i); if (findViewById != null) { return findViewById; } throw new IllegalArgumentException("ID does not reference a View inside this Dialog"); } }