大约有 318 项符合查询结果（耗时：0.0256秒） [XML]
How to query as GROUP BY in django?
...p = ForeignKey(Shop, ...)
price = DecimalField(...)
class GroupedBookListView(PaginationMixin, ListView):
template_name = 'book/books.html'
model = Book
paginate_by = 100
def get_queryset(self):
return Book.objects.group_by('title', 'author').annotate(
shop...
Do I need all three constructors for an Android custom view?
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This is essential advice when extending ListView. As a (previous) fan of the above this-cascading, I recall spending hours tracking down a subtle bug that went away when I called the correct super method for each constructor.
– Groovee60
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java.lang.OutOfMemoryError: bitmap size exceeds VM budget - Android
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this won't work if trying to add those elements into a listview. do you have any suggestion on that?
– Rafael Sanches
Dec 14 '12 at 10:01
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How can I run code on a background thread on Android?
...my SQLite - both in background thread, then get my UI notified to refresh ListView. I usually do it with IntentService, but RoboSpice is less typing.
– Yar
Mar 3 '16 at 18:04
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What does it mean to inflate a view from an xml file?
...e process of adding a view (.xml) to activity on runtime. When we create a listView we inflate each of its items dynamically. If we want to create a ViewGroup with multiple views like buttons and textview, we can create it like so:
Button but = new Button();
but.setText ="button text";
but.backgro...
How do I suspend painting for a control and its children?
... That's certainly a useful technique - one which I use quite often for ListViews - but it doesn't actually prevent the redraws from happening; they still happen offscreen.
– Simon
Mar 11 '10 at 9:36
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java.lang.IllegalArgumentException: View not attached to window manager
... same issue, where I am loading lots of items (via the file system) into a ListView via an AsyncTask. Had the onPreExecute() firing up a ProgressDialog, and then both onPostExecute() and onCancelled() (called when the task is cancelled explicitly via AsyncTask.cancel()) closing it via .cancel().
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Why Would I Ever Need to Use C# Nested Classes [duplicate]
...MS doesn't adhere to its own recommendation: Just see System.Windows.Forms.ListView nested classes!
– Mehrdad Afshari
Jul 5 '09 at 2:24
1
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Difference between a clickable ImageView and ImageButton
...rence between the two is that if you want to put a clickable button into a ListView´s cell while maintaining the cell itself as clickable you are much better off with an Imageview. EditTexts and ImageButtons seem to consume the touch event when TextViews and ImageViews don´t.
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View.setPadding accepts only in px, is there anyway to setPadding in dp?
...is inherited by an activity, but I'm trying to use these lines in a custom listview adapter. Is there any way I can do this if I can't call getResources()?
– Mike Baxter
Oct 2 '13 at 8:51
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