Can someone point me to the right direction or how I would go about in making my listview expand/collapse like the expandablelistview without using the expandablelistview?
The reason is I am trying to merge multiple list views together using CWC MergeAdapter and the MergeAdapter does not accept a ExpandableListAdapter so I would need to code in the collapse/expand on a regular listview.
Unless someone out there knows how I can add an ExpandableListAdapter to a Merge Adapter?
My understanding is ExpandableListViews have been phased out because they're not a preferred design solution. My first suggestion is to think of alternate navigation methods.
If you absolutely need expandable functionality you will have to make your own ListView that contains views that are dividers and views that represent content. When you click a divider, it sets the visibility of the content views it cares about to View.VISIBLE and then when you want to hide it you can use View.GONE. But, this imitates a normal ExpandableListView so why not just flatten the ExpandableListView when you need to merge it?
Related
I want to create what is basically a list view but without it being a ListView.
So I have a ListView right now that pulls up a layout with a CardView, TextView, etc. However I need to create multiple lists but listviews wrap the content up and makes me scroll inside the view - I don't want this. I want to be able to see the entire list and scroll in the main view.
How can I just add the layout with the CardView, instead of displaying it as a ListView? Would be a lot easier if I could attach an adapter to a Linear Layout or something.
Edit: I know I could add it all in the XML, but it seems like it'd get very bad looking in the xml code.
ListView (and RecyclerView) do a ton of non-trivial things that are very difficult to independently implement with your own homemade alternative. Fortunately, there are many third-party solutions that address your particular problem. A good choice is CWAC's MergeAdapter. It's essentially a wrapper of sub-adapters.
To handle the section headers, you can either make the first item of each sub-adapter a header item (styled accordingly). Or use MergeAdapter's addView() method to add a "header" view before each addAdapter() call.
I know that is not a good practice put a ListView inside a ScrollView, that's why I want to figure out what kind of solution can handle this.
Look at the image below:
There's a block with some stuff on the top and there's a ListView below, and all of this scrolls with the entire layout. So, the question is:
How do I achieve this?
You should have just a ListView and set a headerView to this ListView to achieve what you want.
Use header View:
ListView below scrollview in Android
or Sticky List Headers if you want to make them stick on top of the listview:
https://github.com/emilsjolander/StickyListHeaders
or use different ViewTypes with your own Adapter implementation:
Listview: Only one list item with multiple textviews
Why do you assume the reviews shown there are in a ListView? To me they just look like a handful of custom Views stacked on top of each other, not an actual ListView.
pintrest like android scrollview
Basically I am looking to have two list views which scroll only together (not separately) when I scroll the screen. (Like if they where in the same scroll view)
Each if the list items of course most remain clickable. Each if the items in each list can have different lengths, so no I can't have a single adapter.
Thanks
The Trick is ListView withing a ListView. You need to have a main listview and then a layout that holds other two listview. The subsequest scroll can be sync between those both using onScrollListener and sync between them. Its quite a project by itself but you could give a try.
Another way is to build a custom view which you want to display as pInterest, might take more than expected time.
there are a lot of libraries for that, here are some of them
https://github.com/vladexologija/PinterestListView
https://github.com/chenyoca/pinterest-like-adapter-view
I am trying to create something like (very poorly created in paint) in the image below:
I have only 4 items, and it won't be more. the items contains two textviews. But when you click on an item, i want it to expand, (like item 2) to the bottom with three extra buttons. It would be really nice if there would be some nice expand animation. I don't want this list to be scrollabe, it just need to fits in my screen. And only one can be expanded.
I think there are two options, but maybe i am missing something.
1) Create an itemlayout.xml, containing an linearlayout or something containing the extra buttons, set to linearlayoutbuttoncontainer.setvisibility(View.GONE). And then build a switch, which closes the others than the clicked one, and set the visibility of the clicked item to visible. This would be fairly easy to build i guess, i don't foresee a lot of problems. But is it possible creating an animation or is there only a sudden screen change?
2) expandable listview, with the buttons in the expandable item. I know its possible to make only one item expanded, by rembering the expanded one and closing it again. But is it possible to make it like this, with the buttons in the expandable part? Actually i've never used an expandable view.
Anyone know what the best solution should be?
Thanks
I would recommend using an expandable list view for this, as your second option described. For this type of list you can use a expandable listview adapter, describded here:
http://developer.android.com/reference/android/widget/ExpandableListAdapter.html
This adapter has both a getGroupView(open/close items) and a getChildView method in which you can inflate your layouts, or manually set them up. If you have used ordinary listviews I'm sure this wont be a problem for you, since it's basically the same operations.
This means you should probably inflate your childViews with a LinearLayout containing three buttons. Then you have to implement functionality for your collapse/expand logics by keeping track of which item index is opened.
I did this tutorial when I first started out with exp.list views, I found it helpful:
http://android-adda.blogspot.se/2011/06/custom-expandable-listview.html
Good luck!
You gotta check this http://udinic.wordpress.com/2011/09/03/expanding-listview-items/ it works neat. If you got any more problems, do ask...
I'm having abit of an issue and i'm not too sure how to go about solving it.
Essentially i have an activity which has a base xml layout of ScrollView and i want this activity to list some results from a Cursor. So i thought i'd use SimpleCursorAdapter... however when i got it all set up it appears that the ListView that the SimpleCursorAdapter goes into doesn't play nice being within another scrollable layout element.
I've sorta got it working programmically but i'd much rather use a ListAdapter as it will make each list entry look like a button and keep it inline with the design of the rest of the application and can handle the ids of each item and where to send the user upon clicking.
So my question is this: is there anyway to either make ListView show all the items such that it never needs to scroll, or can i change the ListView to something like a LinearLayout?
I hope that makes sense!
Any help / insight / ideas are welcome!
Cheers!
You can NEVER use a scroll view and a ListView together. Its a mess! and illogical as well.
Here are some of the approaches you can use:
Theres no screen big enough to show all the content of you listView you can try wrapping up your content but as I said it won't help as scroll view and list view don't work together. So you can either remove your or
If your list items are simple you can dynamically add your views to LinearLayout with specified location
Another tip I can give you is you can always use an relative layout and place your listView alignParentBottom="true" and emit the scrollView approach this will make you listview alwyas scrollable.
It doesn't really make sense to have a ListView inside a ScrollView at all. The ListView implements it's own scroll function so it should not be used in conjunction with a ScrollView anyway.
You should rethink your UI design.
I agree with Shardul; trying to put a listview with a scrollview will make it impossible to scroll. Have a look at the links below to see what you can accomplish with just a ListView -
a.
custom backgrounds info.
custom adapters