UIGraphicsBeginImageContext(self.view.bounds.size); //currentView 当前的view 创建一个基于位图的图形上下文并指定大小为
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];//renderInContext呈现接受者及其子范围到指定的上下文
UIImage *viewImage = UIGraphicsGetImageFromCu[......]
转载自：
我们知道，在iPhone中获取照片库常用的方法如下：
UIImagePickerController *m_imagePicker = [[UIImagePickerController alloc] init];
if ([UIImagePickerController isSourceTypeAvailable:
UIImagePickerControllerSourceTypePhotoLibrary]) {
m_image[......]
没有测过各个ios版本的兼容性：
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
cell.textLabel.text = ...;
if (/*[......]
1.present.2.dismissed.3.push.4.pop.
- (BOOL)isBeingPresented NS_AVAILABLE_IOS(5_0);
- (BOOL)isBeingDismissed NS_AVAILABLE_IOS(5_0);
- (BOOL)isMovingToParentViewController NS_AVAILABLE_IOS(5_0);
- (BOOL)isMovingFromParentViewController NS_AVAILA[......]
类似微信右上角扫一扫弹出菜单那个动画：
view.layer.anchorPoint = CGPointMake(1.0, 0)
view.transform = CGAffineTransformMakeScale(0, 0)
UIView.animateWithDuration(0.2) {
view.transform = CGAffineTransformIdentity
view.alpha = 1
}
简单解释下：anchorPoint是缩放的旋转点，p[......]