Can anyone give me some idea or code if possible regarding how to change the Theme of Listview ( like the back ground color, text color, icons etc) by clicking a button for example at runtime?
I saw an example here android dynamically change style at runtime.
I want to know if something similar is possible for List Views?
Thank You.
For changing the Bg color, you can set it dynamically.
mListView.setBackgroundColor(mColor); //doc
For changing the design in your listView, you have to set some variables, then use them in your custom adapter. When you click, you change these variables and call the notifyDataSetChanged() method.
Hope this will help you.
If I understand your question correctly, you want to customize the look and feel of the rows (individually or all) dynamically. If so, using a custom adapter and overriding the getView(...) function will probably work for you.
A quick explanation is available at http://www.mkyong.com/android/android-listview-example/
Hope this helps.
Related
I need to change button style from "contained" to "outlined" at runtime.
For now the only way I've found to create an outlined button is to set its style to ?attr/materialButtonOutlinedStyle.
Unfortunately I haven't found a way to change the style at runtime, is it possible?
Is there any way to get this effect?
As a view with text inside, it should have "setTextAppearance" function. It's not the ideal option but may help. Also can be useful to look on https://github.com/airbnb/paris.
I would like to know if there is a way to add a button, or any element below the text of an ExpantableTextView. I'm using this library and I want it to look like this:
I think you'd chosen wrong library. You choseExpandableTextView and now you're asking for help, because you cannot add a button to this View.
Try to search for ExpandableLayout library. Maybe this you would find useful - please check: https://github.com/traex/ExpandableLayout
For more similar libraries, check: http://android-arsenal.com/search?q=expandable
Hope it help
In one line Yes, it can be done in this way.
Two approach:
Modifying the existing library to fulfill your need. For this you should have knowledge of building custom view.
This is just a work around to get the desire result. Put a Button with visibility set to as invisible and place it just below your expandableTextView. Now on click of your expandableTextView just set the visibility of your Button to visible
I hope you would be able to achieve what you want.
when I show my custom listviewitem to the user, all the items and objects contained in each item have the color that I want,
but when scrooling and selecting ( with onListItemClick ), the items don't change the background color for the desired color
Sounds like you need to set the cache color hint. This blog post -- http://android-developers.blogspot.com/2009/01/why-is-my-list-black-android.html -- goes in to how to do that, and why you need to do it.
Try to add this to the onCreate method of your activity.
your_list_view.setCacheColorHint(0);
I had the same issue few days ago and it solved my problem. If you feel it is not what you need to do, then please post some code to have more details.
You will need to use selector for that. Check this http://android-codes-examples.blogspot.com/2011/03/customized-listview-items-selection.html
Read this note about CacheColorHints in the android reference guide:
http://developer.android.com/resources/articles/listview-backgrounds.html
it explains the concept behind it and why you need to set it to "#00000000" in your XML or 0 in your code.
Turns out, my view has a custom android:list<view>, and on my custom listview definition, i was using the android:background definition for each textview.
With this, I was not using the transparent or system defined color for background items on the listview. I removed this definition from my custom listview items definition, and the problem was solved.
Hai!
In my application i want to change the listView text color in android.
How can i achieve this.
any solution will be appreciated...
ListView uses some optimizations when displaying itself, so you have to take some care when changing colors: http://developer.android.com/resources/articles/listview-backgrounds.html
You'll need to use a custom Adapter to do this. This tutorial looks pretty good: custom list view
The default color of the text is white. Let's say if i want to change the color, then how can i do it? Any clue?
in the getView method, find your TextView and set the color via setTextColor().
If you want your color changed for you based on the state of the item ( selected/focused etc) create new color in my_color.xml and define your states - examples of stateful colors are in SDK in res folders.
I highly recommened writing your own theme for the list view and then setting it in the layouts xml file, this means that you can use the same style throughout your app
This is a good tutorial to start with
http://brainflush.wordpress.com/2009/03/15/understanding-android-themes-and-styles/
One thing you could do is use your own layout for the list items. This way you could set whatever color or any other layout in the items.
You couldn't use setTextColor(); in your ListAdapter ? I think you could