I wonder if it is possible to print in TwoLineListView like in TextEdit? For example if I want to print some word in line1 and translation in line2? Is there anything like twolinedtextview.add("word,"translation"); ? I need my text to appear in listview when i press the button.
1. If you are using default ArrayAdapter with the ListView, then you can use ONLY ONE TextView.
2. But you can very well do this with the help of Custom adapter by using BaseAdapter or
ArrayAdapter..
See this link for an easy tutorial:
http://techdroid.kbeanie.com/2009/07/custom-listview-for-android.html
you can subclass ArrayAdapter class, override getView(), and construct your rows yourself. The getView() method is responsible for returning a View, representing the row for the supplied position in the adapter data.
If you don't want to extend ArrayAdapter (like the others suggested), you can always use a SimpleAdapter
Here's a short tutorial about using it for 2 line list.
Related
I'm trying to design a page for my app that will be a list of places. I need each list entry to have a picture, text below, short description, and some other info, address
The list view fragment examples that I've seen simply have one or two lines which won't really do what I need it to... where do go from here? I'm not sure what to search for, nothing useful has come up so far..
You are going to need to make a custom ArrayAdapter.
Check out some of these examples:
Android Custom Listview with Image and Text using ArrayAdapter
Android Custom ListView with Images and Text – Example
Customizing Android ListView Items with Custom ArrayAdapter
I have a doubt related with setAdapter. Somebody could detail or explain the functions and how to understand a code like this.
mDrawerList.setAdapter(new ArrayAdapter<String>(this,R.layout.drawer_list_item, mServices));
detail for example:
new ArrayAdapter ; this.
A list adapter is an object that adapts a collection objects for display in a ListView. ArrayAdapter is one simple implementation that maps an array of objects.
mDrawerList.setAdapter(new ArrayAdapter<String>(this,R.layout.drawer_list_item, mServices));
This line is mapping an array of strings (mServices) for display in a ListView (mDrawerList). The second argument to the adapter's constructor is the layout that will be used to render each list item.
List adapters, and adapters in general are a long and complex topic that isn't going to be explained in an SO answer. Try these links,
http://developer.android.com/guide/topics/ui/layout/listview.html
http://developer.android.com/reference/android/widget/ListAdapter.html
I am attempting to create a list view which displays different data based on a selection from an a spinner.
My list view is implemented via a base adapter which works fine.
My data is stored in an array list of objects which each contains fields that store individual data and based on the selection from the spinner filters the data stored in the array list and displays it on the list view.
But my question is how can I clear a list view content without clearing its underlying data (stored in the array list) and calling notifyDataSetChanged? I want to be able to preserve the data stored so if the user goes back to a previous selection, the data is still present.
Thank you for your time in reading this.
As your data is stored into an ArrayList, you can simply use:
listView.setAdapter(null);
It will remove the adapter of your ListView, and so, remove all the items displayed.
The data will still be in your ArrayList so if you want to re-display this ListView, you just have to recreate your Adapter and set it again. You can even create a global instance of your BaseAdapter so you only have to create it once.
You could just pass another ArrayList to the adapter with the new data to show inside the ListView.
Or, you could create two ArrayList inside the Adapter, one named original which contains the original elements of the ListView and another currentElements which will be the real ArrayList to show changed as you want. With some custom methods, you can choose to switch between the two versions of the ArrayList.
It's could be the same concept of an Adapter which implement a Filter.
Anyway if i understand your problem, you want to change the content of a ListView based on the selection. Well, in this case i would send another ArrayList to show.
Create a list of adapters, one adapter for each selection. Then simply switch to a different adapter when the selection is changed with listView.setAdapter(adapter)
i want to differentiate the list items by changing the Text style to bold for "ParentID is null" and "ParentID is not null" with normal Style. Please help me with the code to get the customizable listview items. Thanks in advance.
here You have to cretae one custom adapter in which you have to define on row layout for list items and you can set different styles for each item
here is good link for that
How to create a custom ListView with "extends Activity"?
Im trying to make an android-app that shows a list of albums and it displays the album-title on each listitem. So far so good.
But I would also need the album-id somehow connected to each listitem to use when I get the next level to list (the album-tracks). How can I in each list item store more values for the items then the displayed text (album-title)?
Right now Im using an ArrayList (to store the album-titles) that is connected to a ArrayAdapter wich use the simple_list_item_1 layout. I get the album-info (title, artist, id) form external xml.
I was thinking on using a multidimensional array but I don't know how to connect it to the ArrayAdapter since it only is expecting an array?
Any suggestions on how I should tackle this?
Instead of using simple list adapter you should use android custom list view.
Check out this link
Hope this will help you.
try Android sample demo project
http://developer.android.com/resources/tutorials/views/hello-gridview.html
http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/index.html