How To Change The Position Of Opened Spinner?

I would like the spinner dropdown to open right below the spinner itself. E.g.: How can i set the position of spinner dropdown?

Solution 1:

Declare the spinner mode as a dropdown:

android:spinnerMode="dropdown"

then use the vertical offset to close the gap:

android:dropDownVerticalOffset="-15dp"

Spinner Android Documentation

Solution 2:

You have to extend Spinner and change the location of AlertDialog (spinner when clicked acts as alertDialog).

Code (does a bit more than just position, it also sets background for opened spinner):

publicclassCustomSpinnerextendsSpinner {

privateAlertDialog mPopup;

publicCustomSpinner(Context context) {
    super(context);
}

publicCustomSpinner(Context context, AttributeSet attrs) {
    super(context, attrs);
}

publicCustomSpinner(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

@OverrideprotectedvoidonAttachedToWindow() {
    super.onAttachedToWindow();
}

@OverrideprotectedvoidonDetachedFromWindow() {
    super.onDetachedFromWindow();

    if (mPopup != null && mPopup.isShowing()) {
        mPopup.dismiss();
        mPopup = null;
    }
}


//when clicked alertDialog is made@OverridepublicbooleanperformClick() {
    Context context = getContext();

    AlertDialog.Builder builder = newAlertDialog.Builder(context);
    CharSequence prompt = getPrompt();
    if (prompt != null) {
        builder.setTitle(prompt);
    }



    mPopup = builder.setSingleChoiceItems(
            newDropDownAdapter(getAdapter()),
            getSelectedItemPosition(), this).show();

    WindowManager.LayoutParamsWMLP = mPopup.getWindow().getAttributes();

            //width and height must be set to anything other than WRAP_CONTENT!WMLP.x = 0; // x positionWMLP.y = 50; // y positionWMLP.height =390 ; //LayoutParams.WRAP_CONTENWMLP.width = 315;
    WMLP.horizontalMargin = 0; 
    WMLP.verticalMargin = 0;

    mPopup.getWindow().setAttributes(WMLP);



    //ListView.getDefaultSize(size, measureSpec)ListView listView = mPopup.getListView();
    //listView.set// Remove divider between rows
    listView.setDivider(null);

    // Set custom background
    listView.setBackgroundResource(R.drawable.drop);

    // Remove background from all (grand)parent'sViewParent parent = listView.getParent();
    while (parent != null && parent instanceofView) {
        ((View) parent).setBackgroundDrawable(null);

        parent = parent.getParent();
    }

    returntrue;
}

@OverridepublicvoidonClick(DialogInterface dialog, int which) {
    setSelection(which);
    dialog.dismiss();
    mPopup = null;
}


 * <p>Wrapper class for an Adapter. Transforms the embedded Adapter instance
 * into a ListAdapter.</p>
 */
privatestaticclassDropDownAdapterimplementsListAdapter, SpinnerAdapter {
    privateSpinnerAdapter mAdapter;

    /**
     * <p>Creates a new ListAddapter wrapper for the specified adapter.</p>
     *
     * @param adapter the Adapter to transform into a ListAdapter
     */publicDropDownAdapter(SpinnerAdapter adapter) {
        this.mAdapter = adapter;
    }

    public int getCount() {
        return mAdapter == null ? 0 : mAdapter.getCount();
    }

    publicObjectgetItem(int position) {
        return mAdapter == null ? null : mAdapter.getItem(position);
    }

    public long getItemId(int position) {
        return mAdapter == null ? -1 : mAdapter.getItemId(position);
    }

    publicViewgetView(int position, View convertView, ViewGroup parent) {
        returngetDropDownView(position, convertView, parent);
    }

    publicViewgetDropDownView(int position, View convertView, ViewGroup parent) {
        return mAdapter == null ? null :
                mAdapter.getDropDownView(position, convertView, parent);
    }

    publicbooleanhasStableIds() {
        return mAdapter != null && mAdapter.hasStableIds();
    }

    publicvoidregisterDataSetObserver(DataSetObserver observer) {
        if (mAdapter != null) {
            mAdapter.registerDataSetObserver(observer);
        }
    }

    publicvoidunregisterDataSetObserver(DataSetObserver observer) {
        if (mAdapter != null) {
            mAdapter.unregisterDataSetObserver(observer);
        }
    }

    /**
     * <p>Always returns false.</p>
     *
     * @returnfalse
     */publicbooleanareAllItemsEnabled() {
        returntrue;
    }

    /**
     * <p>Always returns false.</p>
     *
     * @returnfalse
     */publicbooleanisEnabled(int position) {
        returntrue;
    }

    public int getItemViewType(int position) {
        return0;
    }

    public int getViewTypeCount() {
        return1;
    }

    publicbooleanisEmpty() {
        returngetCount() == 0;
    }

   }
   }

Then you just gotta insert it to your layout with "yourPackage.CustomSpinner" element like:

<yourPackage.CustomSpinner 
     android:layout_height="wrap_content"
     android:id="@+id/spinner" 
     android:layout_width="fill_parent">
</yourPackage.CustomSpinner>

Solution 3:

For dropdown Spinner mode you can use this:

mSortingSpinner.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
    @Override
    public void onGlobalLayout() {
        mSortingSpinner.setDropDownVerticalOffset(
                mSortingSpinner.getDropDownVerticalOffset() + mSortingSpinner.getHeight());
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
            mSortingSpinner.getViewTreeObserver().removeOnGlobalLayoutListener(this);
        } else {
            mSortingSpinner.getViewTreeObserver().removeGlobalOnLayoutListener(this);
        }
    }
});

This set vertical offset of dropdown by spinner height.