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);
Related
I'm building an ExpandableListView in which there are groups of radio buttons.
Currently, I am able to handle the click event on each radio button and select the corresponding one and deselect the others. But there is just one more thing needed to make it perfect. That is displaying the value of the selected checkbox in the group view so the user can see what is selected without expanding it.
For that purpose, I have a TextView in the group view. Is it possible to update that TextView when a checkbox is selected in the child view?
Here is a screenshot of what I have right now:
Basically what I want to accomplish is to make it write the value of the selected checkbox instead of "Regular".
Thanks.
in your example, it seems perfectly reasonable to save a reference to your TextView inside a member variable when it is created. you can then easily update its value by calling setText() on it from within your checkbox's click handler.
it is neither necessary nor desirable to call notifyDataSetChanged().
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.
I am working on an application in which I have a customized list view. This list view contains 1 CheckBox, 1 RadioButton and 1 TextBox. I can't use Radio Group as I have only one RadioButton. I am having difficulties in maintaining the state of that only Radio Button. What I want is:
From all the entries in a list, select only one row's Radio Button.
which means, If I select a RadioButton from some other row in the List the first one should be unchecked and the newer one must be checked and so on.
Can anyone please help me out. Thanks in advance...:-)
Actually i m Not aware of Android but Here is what i m Doing for iPhone Apps. Hope This will work For android Too.
Set a Tag (tag=row number) for Each Radio Button and Change their States According to Tag number.
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