Develop Reference

Get last selected Spinner value before change

I have a spinner and I want to get the last selected value of it when I click on the spinner (basically just before the items in the list are being shown).
How can I achieve this?
Update:
Example: There are a dynamic amount of spinners. User clicks in spinner 1 and selects a value, let's say "house". Then clicks somewhere else. Then clicks in spinner 1 again. What I now need is to return the value "house" that was previously was selected before the user selects a different value i.e. "car" in that spinner. I can not use the local storage to save that value beforehand because it's going to be a dynamic amount of spinners to be added.
And yes, I did in fact read the documentation at http://developer.android.com/guide/topics/ui/controls/spinner.html already but what I need isn't explained there.

Maybe you can declare a String array and then use it to storage the items values. Showing this in a TextView is a way to see if it works.
Something like this:
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
selection.setText(items[arg2]);
}
I already have faced a similar situation, but I don't remember exactly how I solved it. Tell me if it gives a better idea to you, I'm new participating here.

Spinner mySpinner=(Spinner) findViewById(R.id.your_spinner);
String text = mySpinner.getSelectedItem().toString();
When the user selects an item from the drop-down, the Spinner object
receives an on-item-selected event.
To define the selection event handler for a spinner, implement the
AdapterView.OnItemSelectedListener interface and the corresponding
onItemSelected() callback method. For example, here's an
implementation of the interface in an Activity:
public class SpinnerActivity extends Activity implements OnItemSelectedListener {
...
public void onItemSelected(AdapterView<?> parent, View view,
int pos, long id) {
// An item was selected. You can retrieve the selected item using
// parent.getItemAtPosition(pos)
}
public void onNothingSelected(AdapterView<?> parent) {
// Another interface callback
}
}
The AdapterView.OnItemSelectedListener requires the onItemSelected()
and onNothingSelected() callback methods.
Then you need to specify the interface implementation by calling
setOnItemSelectedListener():
Spinner spinner = (Spinner) findViewById(R.id.spinner);
spinner.setOnItemSelectedListener(this);
IN YOUR CASE:
TO se if the user clicked on the spinner, do this:
if (spin.getSelectedItemPosition() < 0) {
Spinner mySpinner=(Spinner) findViewById(R.id.your_spinner);
String text = mySpinner.getSelectedItem().toString();
}
This means user clicked the spinner, but not any items of it.
EDIT AGAIN
public class SpinnerActivity extends Activity implements OnItemSelectedListener {
> ...
>
> public void onItemSelected(AdapterView<?> parent, View view,
> int pos, long id) {
> parent.getItemAtPosition(pos) //THIS GETS YOU THAT VALUE THAT THE USER CLICKED ON DYNAMICALLY
> }
>
> public void onNothingSelected(AdapterView<?> parent) {
> // Another interface callback
> }
> }
http://developer.android.com/guide/topics/ui/controls/spinner.html

Solution is to add a TextView widget with each added Spinner. Set the TextView to "gone" (not visible). When the spinner changes set the value to that TextView. This way you can store the last selected spinner value in the TextView. When the user clicks on the spinner and changes the value you can still access the previously selected/unselected value from the spinner through the TextView widget.
// Use this TextView to temporarily store the spinner value
final TextView hiddenTextView = new TextView(getContext());
hiddenTextView.setVisibility(View.GONE);
final Spinner spinner = new Spinner(getContext());
spinner.setPrompt(getString(R.string.email_other));
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(getContext(), R.array.email_types, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
Log.d(TAG, "TextView Value before spinner change: " + hiddenTextView.getText());
String spinnerValue = String.valueOf(spinner.getSelectedItem());
hiddenTextView.setText(spinnerValue);
Log.d(TAG, "TextView Value after spinner change: " + hiddenTextView.getText());
}
#Override
public void onNothingSelected(AdapterView<?> parentView) {
return;
}
});

Enable a disabled edittext android

I have an edittext and a spinner with two items (" " and "1"). I disabled my edittext. Now what I want to do is enable my edittext when I select 1 in my spinner. But it's not enabling.
public void onCreate(Bundle savedInstanceState) {
.......
enable();
}
public void enable() {
Spinner spinner1 = (Spinner) findViewById(R.id.spinner1);
spinner1.setAdapter(ArrayAdapter.createFromResource(this, R.array.spinner1, android.R.layout.test_list_item));
EditText edit1 = (EditText) findViewById(R.id.edit1);
String s1 = spinner1.getSelectedItem().toString();
edit1.setEnabled(false);
if (s1.equals("1")) {
edit1.setEnabled(true);
edit1.setFocusable(true);
edit1.setFocusableInTouchMode(true);
}
}

You must implement the method onItemSelected:
Callback method to be invoked when an item in this view has been
selected. This callback is invoked only when the newly selected
position is different from the previously selected position or if
there was no selected item.
public abstract void onItemSelected (AdapterView<?> parent, View view, int position, long id) {
}

you should create on change item listener and set it to your spinner. This where you should post the code for enabling the edittext

Use the Spinners onclick listener to 'hear' when the spinner has been interacted with, take the value of the spinner inside the onclick and manipulate other objects as you need.

Extent OnItemSelectedListener of Spinner class and on
public void onItemSelected(AdapterView<?> parent, View view,
int pos, long id) {
// An item was selected. You can retrieve the selected item using
// parent.getItemAtPosition(pos)
}
Take the action of enabling and disabling the edit text.

Change The Adapter when Click On Spinner

I need to change the Adapter of my Spinner exactly at the moment when I click on it.
I'm trying to display a Spinner with The value "Make Your choice" and then when the user click, another adapter is loaded on the Spinner and he can make his choice (without displaying the "Make Your choice").
Here is my code
ArayAdapter adapterclasse = new ArrayAdapter(this,android.R.layout.simple_spinner_item, affp.classes);
ArrayAdapter adaptermodule = new ArrayAdapter(this,android.R.layout.simple_spinner_item, affp.matiers);
spinner.setAdapter(adapterclasse);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
spinner.setAdapter(adaptermodule);
}
#Override
public void onNothingSelected(AdapterView<?> parentView) {
// your code here
}
});
but it's not working. When the app is launched, I got the second adapter loaded instead of the first.
Please help and thanks.

The second adapter is set because when the spinner is loaded the method onItemSelected is called, that's normal (the first element is selected).
Anyway, in general I don't think you need 2 adapters, you can just put "Make Your choise" on top and onItemSelected if the user has selected that, you can stop him and ask to select a real value.

Actually, it's possible to load a new adapter when the user touch the view (spinner)
spinner.setOnTouchListener(new OnTouchListener()
{
#Override
public boolean onTouch(View v, MotionEvent event)
{
spinner.setAdapter(adapterclasse2);
return false;
}
});

Spinner OnclickListener event executes twice, how to handle both events

Spinner OnclickListener event executes twice -
Spinner initialization
User selected manually
where as implementation of listener is as :
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
}
public void onNothingSelected(AdapterView<?> parent) {
}
});
Problem definition
I want to save user selected text into data storage, when user choose any item from spinner, and I am able to do this. But my another task is that to show previously selected item (access from data storage) as selected item in spinner, but each time when I call spinner's activity, spinner shows first item as default selected item, and also in data storage it make change previous item to default.
How can I make difference between 'Spinner initialization' and 'User selected manually' events?

You have to handle both events logically. As these references (Android Spinner selection, problem on spinner) says that you have to use flag variable to handle this, I am putting a code sample.
Hope this will help you to clear your logic.
public class TestActivity extends Activity {
//Checks report spinner selection is default or user selected item
private boolean isDefaultSelection;
//Spinner setup
Spinner spinner;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.your_layout);
// Set true at onCreate
isDefaultSelection = true;
spinner = (Spinner) findViewById(R.id.id_of_spinner);
ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String> (this, R.layout.drop_down_custom_row, data);
//Implement custom view for drop down of spinner
//spinnerAdapter.setDropDownViewResource( android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(spinnerAdapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
if(isDefaultSelection) { //If spinner initializes
spinner.setSelection("Set_here_id_of_data_item_from_storage_which_was_previously_stored");
isDefaultSelection = false;
} else { //If user manually select item
int itemPosition = spinner.getSelectedItemPosition();
//Write here code to store selection (itemPosition) of user into data storage
}
}
public void onNothingSelected(AdapterView<?> parent) {
//User selected same item. Nothing to do.
}
});
}
}
Hope it will clear your doubt.

You can call the setSelection at the same time that the items are added to the adapter, see this example: How to avoid onItemSelected to be called twice in Spinners

How to avoid having android spinner call itemselectedlistener when setting adapter?

It appears that android's Spinner class (and possibly ListView in general, although I don't know for sure) calls your OnItemSelectedListener's onItemSelected() method after you call setAdapter(), even if the user hasn't explicitly selected anything yet.
I can see how this would be useful in many situations, but there are times when I only want onItemSelected() to be called when an item is actually specifically selected.
Is there a way to control this behaviour and have Spinner NOT call onItemSelected() after setting the adapter?

I haven't used this solution for very long yet so I'm not totally confident that it works as expected, but I've had luck so far with this workaround:
spinner.setOnItemSelectedListener( new OnItemSelectedListener() {
protected Adapter initializedAdapter = null;
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// Always ignore the initial selection performed after setAdapter
if( initializedAdapter !=parent.getAdapter() ) {
initializedAdapter = parent.getAdapter();
return;
}
...
}
}
Is there a better way?

Add listener to spinner like below:
spinner.post(new Runnable(){
public void run()
{
spinner.setOnItemSelectedListener( new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
...
}
}
}
});

I've used the setTag and getTag methods, and created a resource id called "spinnerstate".
Then whenever I programmatically set the adapter, I set the "spinnerstate" tag to "init", and in the fired event, set it to "ready" and ignore the event. (note my code is Mono for Android se it will look different):
Set Adapter:
profileSpn.SetTag (Resource.Id.spinnerstate, "init");
profileSpn.Adapter = new ArrayAdapter (this, Android.Resource.Layout.SimpleSpinnerItem, items.ToArray ());
Item Selected event:
string state = (string)((Spinner)sender).GetTag (Resource.Id.spinnerstate);
if (state == "init") {
((Spinner)sender).SetTag (Resource.Id.spinnerstate, "ready");
return;
}
I agree that this is not desired behaviour in almost 100% of cases, and I don't think it's good design on the part of Google, but there you go.

I did similar things before, I used count value. Using parent adapter object is incomplete because it can be a problem when view is refreshed or getView() called again.
Therefore, I recommend that using array of counter.
At first, define array of count in adapter globally.
private int isInitializedView[];
And then initialize it on getView().
isInitializedView[position] = 0;
In the selection listener, do something that you want if it already initialized.
holder.mySpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
isInitializedView[position]++;
if(isInitializedView[position] > 1) {
// do someting that you want
}
}
#Override
public void onNothingSelected(AdapterView<?> parentView) {}
});
(Note that isInitializedView[position]++; can be come after if() routine, and only trigger event when this value is >0 . It's your choice.)

I had three spinner in my activity and all spinner adapter data has been filled at runtime(from web-service data after call from onCreate method). So it automatically call onItemSelected(AdapterView<?> parent, View view, int position, long id) method of spinner.
I solved this issue by using onUserInteraction() method of activity
check this method that user is interacting with spinner or not. if yes then perform the action else not
Declare isUserIntract boolean variable globally
in onItemSelected method use following procedure
If(isUserIntract)
{
//perform Action
}
else{
//not perform action
}
use below code in activity
#Override
public void onUserInteraction() {
super.onUserInteraction();
isUserIntract = true;
}