史上最簡單的抽屜效果實(shí)現(xiàn) -- 代碼就是呆萌任性
1、主要控件：Container View
2、實(shí)現(xiàn)思路：通過輕拂手勢（左，右）改變Container View的頂部約束，寬度約束，底部約束
3、實(shí)現(xiàn)代碼：
（1）為了方便，用的模板布局，示意圖如下：
（2）極少代碼
1、拖線出來的三個約束變量
@property (strong, nonatomic) IBOutlet NSLayoutConstraint *Toplayconst;
@property (strong, nonatomic) IBOutlet NSLayoutConstraint *Bottomlayconst;
@property (strong, nonatomic) IBOutlet NSLayoutConstraint *Widthlayconst;
2、左右輕佛手勢具體實(shí)現(xiàn)代碼
- (IBAction)Swipleft:(UISwipeGestureRecognizer *)sender {
self.Toplayconst.constant = 0;
self.Bottomlayconst.constant = 0;
self.Widthlayconst.constant = self.view.bounds.size.width;
[UIView animateWithDuration:0.5 animations:^{
[self.view layoutIfNeeded];
}];
}
- (IBAction)Swipright:(UISwipeGestureRecognizer *)sender {
self.Toplayconst.constant = 40;
self.Bottomlayconst.constant = 40;
self.Widthlayconst.constant = 100;
[UIView animateWithDuration:0.5 animations:^{
[self.view layoutIfNeeded];
}];
}
