app:showAsAction ifRoom is not working on appcompat action bar

Question

I have an action bar with the following menu items;

Answer 1

ToolBar (that is in ActivityBar) strives not to exceed some amount of visible elements. And that limit is lower than ToolBar can contain indeed. The limit is set in android.support.v7.view.ActionBarPolicy class:

`/**
     * Returns the maximum number of action buttons that should be permitted within an action
     * bar/action mode. This will be used to determine how many showAsAction="ifRoom" items can fit.
     * "always" items can override this.
     */
    public int getMaxActionButtons() {
        final Resources res = mContext.getResources();
        final int widthDp = ConfigurationHelper.getScreenWidthDp(res);
        final int heightDp = ConfigurationHelper.getScreenHeightDp(res);
        final int smallest = ConfigurationHelper.getSmallestScreenWidthDp(res);


    if (smallest > 600 || widthDp > 600 || (widthDp > 960 && heightDp > 720)
            || (widthDp > 720 && heightDp > 960)) {
        // For values-w600dp, values-sw600dp and values-xlarge.
        return 5;
    } else if (widthDp >= 500 || (widthDp > 640 && heightDp > 480)
            || (widthDp > 480 && heightDp > 640)) {
        // For values-w500dp and values-large.
        return 4;
    } else if (widthDp >= 360) {
        // For values-w360dp.
        return 3;
    } else {
        return 2;
    }
}`

As you can see the limit is between 2 and 5, and it depends on the screen width. So if you want to exceed the limit, you should use showAsAction="always" or create your own view for ActionBar .