Question

我有一个片段，根据类别数添加一些动态ui。我需要显示一个进度对话框，并在生成UI时将其关闭。我在类别获取过程的开始和结束以及ui生成结束时调用pd.show（）和pd.hide（）。仍然我的进度对话框没有被解雇。

 @Override
public void onCreate(@Nullable Bundle savedInstanceState)
{

    super.onCreate(savedInstanceState);
    setTrackedPageName(R.string.analytics_select_service);
    pd = new ProgressDialog(getContext());
    pd.setIndeterminate(true);
    pd.setMessage("Preparing information..");
    pd.setCancelable(false);
    pd.show();


}

@Override
public void onAttach(Context context)
{
    super.onAttach(context);
    App.from(context).inject(this);

    categoriesSubscription = null;
}

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
    View view = inflater.inflate(R.layout.fragment_service_selection, container, false);
    if (view != null)
    {
        ButterKnife.inject(this, view);

        // We're recreating the view - we must be at the top of the scrollview!
        isScrolledDown = false;
    }


    return view;
}


@Override
public void onActivityCreated(Bundle savedInstanceState)
{
    super.onActivityCreated(savedInstanceState);

    if (Categories.hasChildren(category))
    {
        populateWithCategories(category.getChildren());
    }
    else
    {
        categoriesSubscription = categories.list()
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .onErrorResumeNext(Observable.empty())
                .subscribe(this::populateWithCategories);
    }




}

@Override
public void onDetach()
{
    super.onDetach();
    if (categoriesSubscription != null && !categoriesSubscription.isUnsubscribed())
    {
        categoriesSubscription.unsubscribe();
    }
}

@Override
public String getTitle()
{
    return null;
}

@Override
public float getDesiredActionBarElevation()
{
    return isScrolledDown ? ActionBarModifyingContent.DEFAULT_ELEVATION : 0;
}

private void populateWithCategories(List<Category> categories)
{
    for (int i = 0; i < categories.size(); i++)
    {
        Category category = categories.get(i);
        if (Categories.isKnown(category)
                && Categories.isValid(category))
                //&& Categories.hasAllowedGenders(category))
        {
            addService(category, i);
        }
    }

    getActivity().runOnUiThread(new Runnable() {
        public void run() {
           pd.dismiss();
            pd.hide();
            pd.cancel();
        }
    });



}

我应该在哪里拨打pd.dismiss或pd.hide或pd.cancel？

Answer 1

由于在主线程上观察到订阅，因此您无需单独在UI线程上运行它。检查一下：

private void populateWithCategories(List<Category> categories)
{
    for (int i = 0; i < categories.size(); i++)
    {
        Category category = categories.get(i);
        if (Categories.isKnown(category)
                && Categories.isValid(category))
                //&& Categories.hasAllowedGenders(category))
        {
            addService(category, i);
        }
    }

    pd.dismiss();

}

如果这不能解决问题，请尝试使用处理程序：

private void populateWithCategories(List<Category> categories)
{
    for (int i = 0; i < categories.size(); i++)
    {
        Category category = categories.get(i);
        if (Categories.isKnown(category)
                && Categories.isValid(category))
                //&& Categories.hasAllowedGenders(category))
        {
            addService(category, i);
        }
    }

    new Handler().post(new Runnable(){

        @Override
        public void run(){
            pd.dismiss();
        }
    });
}

希望这有帮助。

Answer 2

private void populateWithCategories(List<Category> categories)
{
dismiss();

    for (int i = 0; i < categories.size(); i++)
    {
        Category category = categories.get(i);
        if (Categories.isKnown(category)
                && Categories.isValid(category))
                //&& Categories.hasAllowedGenders(category))
        {
            addService(category, i);
        }
    }

Answer 3

这对我有用：

@Override
public float getDesiredActionBarElevation()
{
    return isScrolledDown ? ActionBarModifyingContent.DEFAULT_ELEVATION : 0;
}

private void populateWithCategories(List<Category> categories)
{
    for (int i = 0; i < categories.size(); i++)
    {
        Category category = categories.get(i);
        if (Categories.isKnown(category)
                && Categories.isValid(category))
                //&& Categories.hasAllowedGenders(category))
        {
            addService(category, i);
        }
    }

    pd.dismiss();
    pd = null;

进度对话框未被片段

3 个答案: