侧滑栏的实现
效果图
现在这些框架很多第三方资源，但是想自己写一个。侧滑实现比较简单，根据自己需求去扩展界面。
创建一个类MenuViewController作为Navigation的rootVC
新建一个UIView（MenuView）作为左侧漏出来的一部分，新建一个ContentViewController作为右侧可拖动的部分。将两个分别添加到MenuViewController上给ContentViewController的view加上拖拽的手势。
实现手势的事件方法，侧滑效果就完成了。
- (void)panGesture:(UIPanGestureRecognizer *)recognizer {
CGPoint point = [recognizer translationInView:self.contenViewController.view];
recognizer.view.center = CGPointMake(recognizer.view.center.x + point.x, recognizer.view.center.y);
CGFloat viewX = recognizer.view.frame.origin.x;
CGFloat viewY = recognizer.view.frame.origin.y;
if (viewX < 0) {
recognizer.view.frame = CGRectMake(0, viewY, recognizer.view.frame.size.width, recognizer.view.frame.size.height);
} else if (viewX >= self.view.frame.size.width * 0.8) {
recognizer.view.frame = CGRectMake(self.view.frame.size.width * 0.8, viewY, recognizer.view.frame.size.width, recognizer.view.frame.size.height);
} else {
recognizer.view.frame = CGRectMake(viewX + point.x, viewY, recognizer.view.frame.size.width, recognizer.view.frame.size.height);
}
if (recognizer.state == UIGestureRecognizerStateEnded) {
if (viewX < 120) {
[UIView animateWithDuration:0.5 animations:^{
recognizer.view.frame = CGRectMake(0, viewY, recognizer.view.frame.size.width, recognizer.view.frame.size.height);
}];
}
if (viewX > 120) {
[UIView animateWithDuration:0.5 animations:^{
recognizer.view.frame = CGRectMake(self.view.frame.size.width * 0.8, viewY, recognizer.view.frame.size.width, recognizer.view.frame.size.height);
}];
}
}
[recognizer setTranslation:CGPointZero inView:self.contenViewController.view];
}
