Scrollload | scroll bottom load more data pull refresh 滚动到底部加载更多数据 下拉刷新 | RecyclerView library
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QUESTION
I am making an infinite scroll and the first thing I did was attach an eventListener to detect when the scroll is near-bottom and if so, fire scrollLoader()
ANSWER
Answered 2020-Dec-19 at 04:13If this is the only spot this code will ever be used, this is the perfect time to use an Immediate Invoked Function Expression (IIFE):
Note the syntax: (()=>{ ... })();
QUESTION
I'm trying to make an infinite scroll to change the pages using vue, vue-infinite-scroll and kanban. the problem here is when the scrollbar came to the end of the content return all other pages together and here is my code
...ANSWER
Answered 2020-Nov-15 at 08:40I solved my problem like this:
QUESTION
I'm trying to modify the back button navigation for a specific activity but I'm having an error
UNCAUGHT EXCEPTION CURRENT ACTIVITY : BookmarksActivity java.lang.NullPointerException: Attempt to invoke virtual method 'void android.os.Bundle.unparcel()' on a null object reference at android.os.Bundle.putAll(Bundle.java:250) at android.content.Intent.putExtras(Intent.java:8597) at usb.terminal.view.fragment.BookmarksFragment$2.onItemClick(BookmarksFragment.java:162)
I've tried two approach, I've modified the back button function in my ActionBarFragment. The problem with my second approach is that it goes to required activity as expected but it's keeps crashing with the error specified above when I'm clicking on an item in my list.
...ANSWER
Answered 2020-Feb-04 at 06:36It seems like your activity.getIntent().getExtras()
is returning null value.
Please try to null check before using extras
and assign new Bundle()
if needed, something like...
QUESTION
I am actually rendering a Complex UI in a react-native app. I am using react-navigation. Whenever I click the option in navigation drawer for my complex UI Page, the whole app hangs for 3-5 seconds and then the page is shown. What I want is a loader screen that loads immediately when I click on the option in navigation drawer and when the complex UI is rendered the loader should disappear and the UI should be shown. The app freezes because of the rendering of the UI. Is there any way to asynchronously render the UI after displaying the loading screen?
Edit
Below is the complex UI that I mentioned earlier. This table is loaded when I navigate to this page.
...ANSWER
Answered 2019-Sep-01 at 21:19Your UI probably also loads slowly because you are using a FlatList inside a FlatList. In my experience it will only cause confussion and performance issues.
One thing you might also want to do is integrate with something like Redux, to handle a global loading state, and based on that value you show a loading spinner or the data.
QUESTION
I wrote a code to view the chat history. Everything works fine, but I realized that. When you scroll up the div to view the history, old posts are displayed at a time. I've added this code $("#messages").scrollTop(200);
to be able to continue scrolling, but this should not be. When you want to view old messages in apps like whatsapp or facebook, you can continue to scroll up for viewing old messages.
What am I supposed to do to stay position after response?
Here is DEMO page.
...ANSWER
Answered 2019-Jun-09 at 15:58now I understood, i solved it by subtracting the old-height from the new height and set this "old-position" as scrolltop
QUESTION
I encounter a problem when i wanted to do pagination. here is my view.py:
...ANSWER
Answered 2018-Feb-06 at 23:18Take a better look at the error message and your code: the only place where you're defining the orgs
variable is on line 12:
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