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Aligning Selected Spinner Item

I'm trying to make a slight adjustment to the positioning of the selected item in the spinner. Not the dropdown list items, as I already have a custom view in my adapter for that, but the selected item specifically.

As you can see in the screenshot, "Any" is the currently selected item. But it is aligned oddly within the container because it has to accommodate the longest string in the dropdown, which is "Dark Purple Burnt Sienna" (or whatever). I want to align the selected text to the right so that "Any" is next to the dropdown indicator instead of way out in the middle.

I've attempted to make adjustments to my custom spinner-item view, but it doesn't have any affect on the selected item.

I've also attempted to set gravity and text alignment on the Spinner itself, but it has no effect.

Here's the image and the xml:

enter image description here

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/default_black"
        android:layout_centerVertical="true"
        android:text="Color" />

    <Spinner
        android:id="@+id/spn_color"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"/>

</RelativeLayout>

Edit: Here's my adapter:

public class ColorsAdapter<T> implements SpinnerAdapter {
    ArrayList<String> mColors;
    ArrayList<Integer> mValues;
    Context mContext;

    public ColorsAdapter(ArrayList<String> colors, ArrayList<Integer> values,
                              Context context) {
        mContext = context;
        mColors = colors;
        mValues = values;
    }

    @Override
    public int getCount() {
        return mColors.size();
    }

    @Override
    public Object getItem(int position) {
        return mColors.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public int getItemViewType(int position) {
        return R.layout.list_item_color;
    }


    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        TextView v = new TextView(mContext);
        v.setText(mColors.get(position));
        return v;
    }

    @Override
    public View getDropDownView(int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(
                Context.LAYOUT_INFLATER_SERVICE );
        View row = inflater.inflate(getItemViewType(position), parent, false);
        TextView tvName = (TextView)row.findViewById(R.id.tv_name);
        tvName.setText(mColors.get(position));
        row.setTag(mValues.get(position));
        return row;
    }


    @Override
    public int getViewTypeCount() {
        return 1;
    }

    @Override
    public boolean hasStableIds() {
        return false;
    }

    @Override
    public boolean isEmpty() {
        return false;
    }

}

And here's the XML for the list item:

<TextView
    android:id="@+id/tv_name"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="10dp"
    android:gravity="right"/>
like image 992
jwBurnside Avatar asked Oct 27 '17 14:10

jwBurnside


1 Answers

You can adjust the settings for selected item in getView(int position, View convertView, ViewGroup parent) method. If you just want to set the gravity and text alignment, you should set it to the TextView in the method like

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    TextView v = new TextView(mContext);
    v.setText(mColors.get(position));
    v.setGravity(Gravity.END); // OR v.setGravity(Gravity.RIGHT);
    return v;
}

Or you can simply inflate custom layout if you want to make further customization:

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(
            Context.LAYOUT_INFLATER_SERVICE);
    View row = null;
    if (inflater != null) {
        row = inflater.inflate(R.layout.list_item_view_color, parent, false);
        TextView textView = row.findViewById(R.id.textview);
        textView .setText(mColors.get(position));
    }
    return row;
}

Where list_item_view_color.xml is your layout file for the selected value.
(NOTE: If you want to use options like autoSizeTextType, you can use them with app prefix for AppCompatTextView in xml files)

like image 90
Rehan Avatar answered Nov 15 '22 18:11

Rehan