无法在HorizontalScrollView中单击列表项

public class CustomHorizontalScrollView extends HorizontalScrollView {

    private LinearLayout mContainer;
    private OnItemClickListener mItemClickListener;

    public CustomHorizontalScrollView(Context context) {
        super(context);
        init();
    }

    public CustomHorizontalScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public CustomHorizontalScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        mContainer = new LinearLayout(getContext());
        mContainer.setOrientation(LinearLayout.HORIZONTAL);
        addView(mContainer);
    }

    public void setOnItemClickListener(OnItemClickListener listener) {
        mItemClickListener = listener;
    }

    public void addItem(String item) {
        TextView textView = new TextView(getContext());
        textView.setText(item);
        textView.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mItemClickListener != null) {
                    mItemClickListener.onItemClick(item);
                }
            }
        });
        mContainer.addView(textView);
    }

    public interface OnItemClickListener {
        void onItemClick(String item);
    }
}