转载自：http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2015/0731/3247.html
在开发中，我们常常需要ViewPager结合Fragment一起使用，如下图：
我们可以使用三方开源的PagerSlidingTabStrip去实现，或者viewpagerindicator，我一般都偏向前者。现在我们可以使用Design support library库的TabLayout去实现了。最终的效果图：[......]
A good starting point is 24sp for headlines and titles, 16sp for
subheadings, 14sp for body text, and 12sp for captions and fine print.
you can use a line spacing of 1.5 and add 2sp to each line[......]
The Material Design guidelines recommend picking a color from the
500 level as your primary, a color from the 700 or 800 level as your darker
primary, and a separate accent color.[......]
传统做法是在viewcontroller上设置navigationController的interactivePopGesturerecovnezer，但是bug很多，推荐如下，在nav controller上的做法：
class C4MVTNavigationController: UINavigationController {
// MARK: - Property
override var supportedInterfaceOrientations: UIIn[......]
传送门：http://stackoverflow.com/questions/6325457/getting-the-frame-of-a-particular-tab-bar-item
我稍微改了一下：
- (CGRect)frameForTabInTabBarWithIndex:(NSUInteger)index
{
NSMutableArray *tabBarItems = [NSMutableArray arrayWithCapacity:[self.tabBar.i[......]