1、底部：UIActionSheet
https://blog.csdn.net/potato512/article/details/51534645
长按：
UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressImage:)];
[selfaddGestureRecognizer:longPressGesture];
- (void)longPressImage:(UITapGestureRecognizer*)tap
{
UIActionSheet *actionsheet = [[UIActionSheet alloc] initWithTitle:nil delegate:_photo.imgVc cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"保存到本地", nil];
[actionsheetshowInView:self];
}
代理：
- (void)actionSheet:(UIActionSheet*)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSString*title = [actionSheetbuttonTitleAtIndex:buttonIndex];
if([titleisEqualToString:@"保存到本地"])
{
//点确定
}
if(buttonIndex ==0)
{
//点确定
}
}
2、中间
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"保存到本地" message:nil preferredStyle: UIAlertControllerStyleAlert];
[alertaddAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[_photo.imgVc dismissViewControllerAnimated:YES completion:nil];
}]];
[_photo.imgVc presentViewController:alert animated:true completion:nil];
