EmojiTabLayout.java 文件源码

public void addItem(@DrawableRes int ico) {
    EmojiTabItemView itemView = new EmojiTabItemView(getContext());
    itemView.setImageResource(ico);
    if (mItemBackgroundRes == 0) {
        StateListDrawable stateListDrawable = new StateListDrawable();
        stateListDrawable.addState(new int[]{android.R.attr.state_checked},
                new ColorDrawable(getResources().getColor(R.color.default_base_bg_press)));
        stateListDrawable.addState(new int[]{android.R.attr.state_pressed},
                new ColorDrawable(getResources().getColor(R.color.default_base_bg_press)));
        stateListDrawable.addState(new int[]{}, new ColorDrawable(Color.TRANSPARENT));
        itemView.setBackground(stateListDrawable);
    } else {
        itemView.setBackgroundResource(mItemBackgroundRes);
    }
    addView(itemView, -1, -1);
    itemView.setOnClickListener(this);
}