2015-5-5-Notes

1.ScrollView, which inherits from Framelayout, so it is a special type of framelayout,

Because it can use the user scroll to display a list of views that occupy more space than the physical display. It is important to note that

ScrollView can contain only one child view or view group, and in the actual project, it usually contains a vertical linearlayout.

It is important to note that ScrollView cannot be used with the ListView because the ListView has already processed the vertical direction of the scroll

Keywords: framelayout, scrolling display

The dynamic effect shows---using the listview.
fixed effects show---use ScrollView.

2.<include/> and <merge/> tags

Include: Specify another layout, that is, to implement nested layout

Merge: Without viewgrouproot, the layout root element is eliminated , and the previous viewgrouproot (root element) is used.

Note:

When inflating a layout starting with a <merge /> , you must specify a parent and you ViewGroup must set to attachToRoot true

(See the documentation for inflate(int, android.view.ViewGroup, boolean) method)

2015-5-5-Notes