I create a custom adapter where each row includes a radio button. Only one radio button can be selected at a time. Up until now I have always added a onClick (or onTouch) event handler to the listview and then gone through all the items (stored in my ArrayList) to determine which item was last selected, then uncheck it (if it's different than the currently selected one), then mark the item associated with the currently selected row to indicate that it has been selected and check the radio button for that item.
This seems kind of a long way of doing things. Is there a simple way to have Android just automatically uncheck whatever radio button is currently selected and then select the newly selected one?
I would suggest you only keep track of currently selected item and call adapter.notifyDataSetChange() on radio button click, this would refresh view and uncheck previously selected radio buttons.
In adapter you have to write something like this:
View getView(...) {
/////// initialize views
if (getItemId(position) == selectedId) {
radioButton.setChecked(true);
} else {
radioButton.setChecked(false);
}
//////////
}
This is not precise code, but I hope you got the idea.
May this help you.
http://custom-android-dn.blogspot.in/2012/12/how-to-use-and-custom-radio-button-in_23.html
Radio buttons are usually grouped by Radio Group.When one RadioButton within a group is selected, all others are automatically deselected.
Related
custom list view with custom checkbox,
Example : i have 4 data and all checkbox checked, i write command to remove item using OnCheckedListener, so when i click checbox the second item, the second item dissapear. the thrid item going up but the checkbox on the third item become checked = false as in the screen (when i debug it, the value still checked=true)
if i remove the third item then the 4th checkbox will be uncheck.
how to resolve this problem?
thanks in advance, sorry for my english
In the onClick() or onCheckedChanged() method, whichever you are using, programmatically check which ones are checked, and toggle them.
Initialize as many CheckBox as you want, and then do this for all :
if(chkbox1.isChecked()){
chk1.toggle();
}
if(chkbox2.isChecked()){
chk2.toggle();
}
I am working on check boxes in android, I had a listview with child having one checkbox, image, textviews and their respective onclick events. I blocked at selecting only one checkbox in the entire listview child at a time. if user wants to select other item then previously selected checkbox need to be unchecked in the listview. Please suggest me . thanks in advance.
I am working on an Android application where I want a user to select a RadioButton corresponding to one category, and add a spinner within the same layout, where the displayed spinner depends on the radio button that was selected. This means for each RadioButton I have a different spinner. I know how to add view to the layout but I was wondering how I might go about storing each of the individual spinners and requesting them when the corresponding category is selected. Is it possible to store them within a layout activity and select the correct one using findViewById?
Agree to Trushit
add all the spinners in the view & on performing the Radio Button event set the visibility of the spinners.
yourSpinner.setVisibility(View.VISIBLE);
&
yourSpinner.setVisibility(View.GONE);
I have problem in list view with single choice mode. I want to display three text views with one radio button in list view. list view working properly. The problem is single choice mode. i want to select only one list item at a time rest of thing unselect mode. I searched last three days still i won't get any idea. Could you please help me. Thanks in advance.
You could make a variable that saves the radiobutton chosen.
In each radiobuttons onclick you could set the variable value and set the rest of the radiobuttons to unchecked.
Hints:
in the radiobutton xml add: android:onClick"method name"
In the method add View view as an argument (example: public void clickMethod(View view).....)
Im not sure if you can display 3 textviews and a radioButton without customize ArrayAdapter
but if you have succeeded to build the list you can do the following
1- remove the focus from the child elements(radioButton and textviews)
you can do this from the xml [android:focusable="false"] and for the listview [listview.setItemsCanFocus(false)]
2- make the radioButton not clickable from xml[android:clickable="false"]
3- create a variable to hold the clicked item (in the custom adapter) and make public method to update this position
4- create OnItemClickListener for the listview, update the clicked position in the adapter
and call adapter.notifydatasetchanged
5- be sure to in getView method to make the radioButton unchecked and make the view at that position is checked
I have list which contain checkbox in each list and I want to define these checkbox for only one of check box can select (like radio button) anybody have any ideas?
Set clickable/focusable/focusableInTouchMode to false, and then the list item vill receive the click, then set the checkbox state manually.
If the checkbox is clickable, then the item will not receive any event, this is an old Android bug still not fixed. Even worse if you want to use EditTexts, but don't get me there