MultView
1、tabbar View：A tab bar is used for selecting one and only one option from among two or more;
2、toolbar View: A toolbar can hold buttons and certain other controls but those items are not mutually exclusive.
3、navigation-based Application:
MultView
1、tabbar View：A tab bar is used for selecting one and only one option from among two or more;
2、toolbar View: A toolbar can hold buttons and certain other controls but those items are not mutually exclusive.
3、navigation-based Application: