MultiMode.java 文件源码

private ToolbarState initPrevState(Toolbar toolbar) {
    ToolbarState prevState = new ToolbarState();
    if (toolbar.getBackground() != null) {
        prevState.toolbarColor = ((ColorDrawable) (toolbar.getBackground())).getColor();
    }
    Context context = toolbar.getContext();
    TypedValue typedValue = new TypedValue();
    TypedArray attr = context.obtainStyledAttributes(typedValue.data,
            new int[]{R.attr.colorPrimary, R.attr.colorPrimaryDark});
    if (attr != null) {
        if (prevState.toolbarColor > 0) {
            prevState.toolbarColor = attr.getColor(0, 0);
        }
        @StyleableRes int index = 1;
        prevState.statusBarColor = attr.getColor(index, prevState.toolbarColor);
        attr.recycle();
    }

    if (toolbar.getTitle() != null) {
        prevState.title = toolbar.getTitle().toString();
    }

    if (toolbar.getSubtitle() != null) {
        prevState.subTitle = toolbar.getSubtitle().toString();
    }

    prevState.title = prevState.title != null ? prevState.title : EMPTY;
    prevState.subTitle = prevState.subTitle != null ? prevState.subTitle : EMPTY;

    prevState.logo = toolbar.getLogo();
    prevState.navigationIcon = toolbar.getNavigationIcon();


    return prevState;
}