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看此示例代碼(在AppDelegate中):CATransition和具體執行時間
- (void)showOtherView {
if (self.viewController.view == view1) {
self.viewController.view = view2;
} else {
self.viewController.view = view1;
}
CATransition *animation = [CATransition animation];
[animation setType:kCATransitionMoveIn];
[animation setSubtype:kCATransitionFromRight];
[animation setDuration:0.5];
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[[self.window layer] addAnimation:animation forKey:@"myKey"];
}
此方法簡單地切換廠景到視圖2。我不明白的事情是,那CATransition聲明和分配視圖2到self.viewController.view後加入window.layer。爲什麼動畫的作品?
我確實設置了斷點並指出showOtherView方法完成後切換動畫。爲什麼?爲什麼view2不會立即出現在屏幕上!? (至少我第一次稱這種方法爲)