Custom Spinner to differentiate between user selected and prorammatically selected item. Make sure to call correct method to use this feature

Spinner.java

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.AdapterView;

/**
 * Used this to differentiate between user selected and prorammatically selected
 * Call {@link Spinner#programmaticallySetPosition} to use this feature.
 * Created by vedant on 6/1/15.
 */
public class Spinner extends android.widget.Spinner implements AdapterView.OnItemSelectedListener {

    OnItemSelectedListener mListener;

    /**
     * used to ascertain whether the user selected an item on spinner (and not programmatically)
     */
    private boolean mUserActionOnSpinner = true;

    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

        if (mListener != null) {

            mListener.onItemSelected(parent, view, position, id, mUserActionOnSpinner);
        }
        // reset variable, so that it will always be true unless tampered with
        mUserActionOnSpinner = true;
    }

    @Override
    public void onNothingSelected(AdapterView<?> parent) {
        if (mListener != null)
            mListener.onNothingSelected(parent);
    }

    public interface OnItemSelectedListener {
        /**
         * <p>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.</p>
         *
         * Impelmenters can call getItemAtPosition(position) if they need to access the
         * data associated with the selected item.
         *
         * @param parent The AdapterView where the selection happened
         * @param view The view within the AdapterView that was clicked
         * @param position The position of the view in the adapter
         * @param id The row id of the item that is selected
         */
        void onItemSelected(AdapterView<?> parent, View view, int position, long id, boolean userSelected);

        /**
         * Callback method to be invoked when the selection disappears from this
         * view. The selection can disappear for instance when touch is activated
         * or when the adapter becomes empty.
         *
         * @param parent The AdapterView that now contains no selected item.
         */
        void onNothingSelected(AdapterView<?> parent);
    }

    public void programmaticallySetPosition(int pos, boolean animate) {
        mUserActionOnSpinner = false;
        setSelection(pos, animate);
    }

    public void setOnItemSelectedListener (OnItemSelectedListener listener) {
        mListener = listener;
    }

    public Spinner(Context context) {
        super(context);
        super.setOnItemSelectedListener(this);
    }

    public Spinner(Context context, int mode) {
        super(context, mode);
        super.setOnItemSelectedListener(this);
    }

    public Spinner(Context context, AttributeSet attrs) {
        super(context, attrs);
        super.setOnItemSelectedListener(this);
    }

    public Spinner(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        super.setOnItemSelectedListener(this);
    }

    public Spinner(Context context, AttributeSet attrs, int defStyle, int mode) {
        super(context, attrs, defStyle, mode);
        super.setOnItemSelectedListener(this);
    }
}

Just tell me, that If I do setSelection it automatically call onItemSelected, now to prevent this what should I do?

You should call programmaticallySetPosition

Hey, Thanks for quick reply. Should I've to do anything else except use this method? Thank You, Jimmy Trivedi

…

________________________________ From: Vedant Agarwala <[email protected]> Sent: Tuesday, July 23, 2019 17:27 To: vedant1811 <[email protected]> Cc: Jimmy Trivedi <[email protected]>; Comment <[email protected]> Subject: Re: vedant1811/Spinner.java You should call programmaticallySetPosition — You are receiving this because you commented. Reply to this email directly, view it on GitHub<https://gist.github.com/d66fb759464bbe5c30e6?email_source=notifications&email_token=AITWX4AZTSOXCBEAH2UQLJDQA3W25A5CNFSM4IGDNK72YY3PNVWWK3TUL52HS4DFVNDWS43UINXW23LFNZ2KUY3PNVWWK3TUL5UWJTQAFVYUA#gistcomment-2978112>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AITWX4FELCMPUQFWKV53ANTQA3W25ANCNFSM4IGDNK7Q>.

This is my class: package com.tekitsolutions.remindme.Utils; import android.content.Context; import android.util.AttributeSet; import android.view.View; import android.widget.AdapterView; public class CustomSpinnerClass extends androidx.appcompat.widget.AppCompatSpinner implements AdapterView.OnItemSelectedListener { OnItemSelectedListener mListener; private boolean mUserActionOnSpinner = true; public CustomSpinnerClass(Context context) { super(context); super.setOnItemSelectedListener(this); } public CustomSpinnerClass(Context context, int mode) { super(context, mode); super.setOnItemSelectedListener(this); } public CustomSpinnerClass(Context context, AttributeSet attrs) { super(context, attrs); super.setOnItemSelectedListener(this); } public CustomSpinnerClass(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); super.setOnItemSelectedListener(this); } public CustomSpinnerClass(Context context, AttributeSet attrs, int defStyle, int mode) { super(context, attrs, defStyle, mode); super.setOnItemSelectedListener(this); } @OverRide public void setSelection(int position, boolean animate) { boolean sameSelected = position == getSelectedItemPosition(); super.setSelection(position, animate); if (sameSelected) { //TODO:-> Spinner does not call the OnItemSelectedListener if the same item is selected, so do it manually now getOnItemSelectedListener().onItemSelected(this, getSelectedView(), position, getSelectedItemId()); } } @OverRide public void setSelection(int position) { boolean sameSelected = position == getSelectedItemPosition(); super.setSelection(position); if (sameSelected) { //TODO:-> Spinner does not call the OnItemSelectedListener if the same item is selected, so do it manually now getOnItemSelectedListener().onItemSelected(this, getSelectedView(), position, getSelectedItemId()); } } @OverRide public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { if (mListener != null) { mListener.onItemSelected(parent, view, position, id, mUserActionOnSpinner); } // reset variable, so that it will always be true unless tampered with mUserActionOnSpinner = true; } @OverRide public void onNothingSelected(AdapterView<?> parent) { if (mListener != null) mListener.onNothingSelected(parent); } public void programmaticallySetPosition(int pos, boolean animate) { mUserActionOnSpinner = false; setSelection(pos, animate); } public void setOnItemSelectedListener(OnItemSelectedListener listener) { mListener = listener; } public interface OnItemSelectedListener { /** * <p>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.</p> * <p> * Impelmenters can call getItemAtPosition(position) if they need to access the * data associated with the selected item. * * @param parent The AdapterView where the selection happened * @param view The view within the AdapterView that was clicked * @param position The position of the view in the adapter * @param id The row id of the item that is selected */ void onItemSelected(AdapterView<?> parent, View view, int position, long id, boolean userSelected); /** * Callback method to be invoked when the selection disappears from this * view. The selection can disappear for instance when touch is activated * or when the adapter becomes empty. * * @param parent The AdapterView that now contains no selected item. */ void onNothingSelected(AdapterView<?> parent); } }

…

________________________________ From: Jimmy Trivedi <[email protected]> Sent: Tuesday, July 23, 2019 17:31 To: vedant1811 <[email protected]>; vedant1811 <[email protected]> Cc: Comment <[email protected]> Subject: Re: vedant1811/Spinner.java Hey, Thanks for quick reply. Should I've to do anything else except use this method? Thank You, Jimmy Trivedi

________________________________ From: Vedant Agarwala <[email protected]> Sent: Tuesday, July 23, 2019 17:27 To: vedant1811 <[email protected]> Cc: Jimmy Trivedi <[email protected]>; Comment <[email protected]> Subject: Re: vedant1811/Spinner.java You should call programmaticallySetPosition — You are receiving this because you commented. Reply to this email directly, view it on GitHub<https://gist.github.com/d66fb759464bbe5c30e6?email_source=notifications&email_token=AITWX4AZTSOXCBEAH2UQLJDQA3W25A5CNFSM4IGDNK72YY3PNVWWK3TUL52HS4DFVNDWS43UINXW23LFNZ2KUY3PNVWWK3TUL5UWJTQAFVYUA#gistcomment-2978112>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AITWX4FELCMPUQFWKV53ANTQA3W25ANCNFSM4IGDNK7Q>.

No nothing else besides that method. In the callback you'll get the boolean userSelected param correctly.

This class looks exactly like mine :D
It'll be better if you just share the changes, ideally by forking my gist.

Ofcourse, I copied content from your class only. Actually I already created this class for setSelection method, and for onSelectedItem I copied your code. But my problem is more complicated. I have add and edit case for setSpinnerSpinner method. Add case working fine. For editCase when I click on spinner list item so one dialog will open, now in dialog have two ok and cancel button , if I click it cancel, it should set previously selected position[FIRST POSITION], not the latest one which I came from, because user selected cancel button. That also I did it by storing into temp variable. But now again I open dialogue by clicking[SECOND POSITION] another list inside spinner, then open dialog then ok button. Now again select another item,[THIRD POSITION] then open dialog and click cancel, that time it is showing first time selected position, not the second time position

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________________________________ From: Vedant Agarwala <[email protected]> Sent: Tuesday, July 23, 2019 7:41:00 PM To: vedant1811 <[email protected]> Cc: Jimmy Trivedi <[email protected]>; Comment <[email protected]> Subject: Re: vedant1811/Spinner.java No nothing else besides that method. In the callback you'll get the boolean userSelected param correctly. This class looks exactly like mine :D It'll be better if you just share the changes, ideally by forking my gist. — You are receiving this because you commented. Reply to this email directly, view it on GitHub<https://gist.github.com/d66fb759464bbe5c30e6?email_source=notifications&email_token=AITWX4F2UTFC5AOX2LJV2JDQA4GPJA5CNFSM4IGDNK72YY3PNVWWK3TUL52HS4DFVNDWS43UINXW23LFNZ2KUY3PNVWWK3TUL5UWJTQAFVY4O#gistcomment-2978247>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AITWX4B6YBUAOVQ6IK6BJG3QA4GPJANCNFSM4IGDNK7Q>.

should the spinner object be created by actual Spinner class or the CustomSpinner class?