ScrollFlags的动态配置
//############## 优化 数据少的时候 Toolbar 不隐藏
AppBarLayout.LayoutParams params= (AppBarLayout.LayoutParams) appBaLayout.getChildAt(0).getLayoutParams();
if(courses.getApiParamObj().get(0).size()<6){
params.setScrollFlags(0);
appBaLayout.setExpanded(true);
}else{
params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL|
AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS|
AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
}
appBaLayout.getChildAt(0).setLayoutParams(params);
