I'm new to both Java and Android development and am wondering how I would go about using a listener to detect when a check box is checked/unchecked. I understand how to do this if the check box was by itself however how would I do it if the checkbox is inside of a list view?
Hopefully this is not too vague.
Thanks
I guess you are using a custom xml for the listview item. In that case, you have to also create a custom Adapter for the listview, and add the listener to the checkboxes there.
Related
I am wanting to create a custom Android spinner such that there are 2 buttons at the bottom of the pop-open list. These buttons will cause another popup. I see two possible methods for creating the buttons. As I am still new to Android I don't know which is better or perhaps there is a third method?
1) In the adapter class, getCustomView() method, return a layout with two buttons in it for the last item in the list. This seems awkward to me. And it pretty much forces me to put the adapter in the view object so that I can control it.
2) Create a totally new custom view object. This seems like a lot of work since the spinner is pretty close to what I need already.
3) ?
I am looking for some expert Android developer opinions. Thanks in advance!
You can go through the following code which I made for custom spinner:
Spinner custom layout keep default layout
I've been trying many things with list items and i'm facing some problems. In my previous question, thanks to #nEx.Software i was able to resolve the problem. But I'm still missing some concepts here.
Right now i'm trying to differentiate between an item's click and a checkbox within it. However, I want to do it without extending the array adapter. Is there a way to use both methods: listView.onItemClickListener() AND listView.getCheckedItemPositions(), together!
There should be a way to use an xml file [doesn't matter how complex it gets] along with extending the available Views and this thing should be done.
Putting it simple, open the gmail app, and u'll find all emails listed with checkboxes where u can click on the checkbox to mark it OR the rest of the item to open the email.
Again, I know that it is doable with extending Adapters and adding an Array for the checkboxes, but, is it possible to use the convenient methods: listView.onItemClickListener() AND listView.getCheckedItemPositions()? is CheckedTextView a part of the solution?
One more thing, rather than just answering me [where i become lazy]
Wheather it is possible or not, is there a verry reliable reference for such issues? I would really like to fully understand everything that goes into this matter... if its not possible, i must be able to tell why!
Thank you :)
add custom row into your listview. into your custom row you add one textview and checkbox into linerlayout and get linerlayout click event.
I am new to android and I am starting a new Application in which I have to list down some users. The list includes image, name and mobile number and the list also include a checkbox. The checkbox has to be enable only when I click on a button like 'Download'. So far I have the listview with checkbox. My question is how can I enabled the checkbox only when I click on 'download' button? And also how can I capture the state of Checkbox? Any help will be appriciate. Thanks...
try looking in this tutorial http://www.softwarepassion.com/android-series-custom-listview-items-and-adapters. This is where I lernt how to do this...
You will need a custom listview in Android.
Fist learn the basics of ListView in Andriod here Then learn
about custom ListView here
Then learn more about ListView here and also here
Then implement your own listview
Wish you all the best.
I would like to design an item like this that opens a subset of other items when clicked, I have only seen it in other applications I've used, and I can't find any resources on how to create it. Does anyone know how to?
Thanks.
Its not clear if you want to created Nested listviews that look like this
-Item1
-Item2
---Item2A
---Item2B
-Item3
or if you want to open a completely new list when the user clicks on an item.
If you want to use a nested listview look at this question: android nested listview
And if you want to open a new activity, then create a 2nd activity with a listview and open that on an item click
Perhaps you should try to have a look at the ExpandableListView.
Documentation is available from here:
http://developer.android.com/reference/android/widget/ExpandableListView.html
If you wanted to add a ListView that opens another list, you can do it in several ways. I've successfully done it by adding an OnItemClickListener to the ListView and then simply load a new set of data in the ListView and update it using invalidate() or by setting a new Adapter.
You could even add some cool transitions or animations, and create a listener for when the animation is completed. Lots of cool ideas :-)
I have create android listview that fill in using String array. I want to give checked/unchecked functionality it using android CheckedTextView widget. so how could I do this.? I googled using lot of key worlds but unable to find suitable tutorial.
I've found you a nice post that will help you out
http://groups.google.com/group/android-developers/browse_thread/thread/3e6c3c11353f59dc?pli=1
basicly, you call isItemChecked() on your listview to determine if it's checked or not, and what item is.
create xml file and put CheckedTextView in it and then create your own custom ListView By extending the ListView and inflate the same layout..
if you have apiDemos then you will find a class called List14.java which can guide you how to design such a ListView