public static void openDialogInvite(final Activity activity)
{
    String appLinkUrl,previewImageUrl;
 
    appLinkUrl = "your app link url";
    previewImageUrl = "https://www.example.com/my_invite_image.jpg";
 
    if (AppInviteDialog.canShow())
    {
        AppInviteContent content = new AppInviteContent.Builder()
                .setApplinkUrl(appLinkUrl)
                .setPreviewImageUrl(previewImageUrl)
                .build();
 
        AppInviteDialog appInviteDialog = new AppInviteDialog(activity);
        CallbackManager sCallbackManager = CallbackManager.Factory.create();
        appInviteDialog.registerCallback(sCallbackManager,new FacebookCallback<AppInviteDialog.Result>()
        {
            @Override
            public void onSuccess(AppInviteDialog.Result result)
            {
            }
 
            @Override
            public void onCancel()
            {
            }
 
            @Override
            public void onError(FacebookException e)
            {
            }
        });
 
        appInviteDialog.show(content);
    }
}