MTStatusBarOverlay iOS自定义状态栏

MTStatusBarOverlay 是一个定制的 iOS 状态栏，用于覆盖系统默认的状态栏，类似 Reeder, Evernote and Google Mobile App 示例代码： MTStatusBarOverlay *overlay = [MTStatusBarOverlay sharedInstance];
overlay.animation = MTStatusBarOverlayAnimationFallDown; // MTStatusBarOverlayAnimationShrink
overlay.detailViewMode = MTDetailViewModeHistory; // enable automatic history-tracking and show in detail-view
overlay.delegate = self;
overlay.progress = 0.0;
[overlay postMessage:@"Following @myell0w on Twitter…"];
overlay.progress = 0.1;
// ...
[overlay postMessage:@"Following myell0w on Github…" animated:NO];
overlay.progress = 0.5;
// ...
[overlay postImmediateFinishMessage:@"Following was a good idea!" duration:2.0 animated:YES];
overlay.progress = 1.0;