第一种
__block MyViewController *myController = [[MyViewController alloc] init];
// ...
myController.completionHandler = ^(NSInteger result) {
[myController dismissViewControllerAnimated:YES completion:nil];
myController = nil;
};
[self presentViewController:myController animated:YES completion:^{}];
第二种 较优雅吧
MyViewController *myController = [[MyViewController alloc] init];
// ...
__weak MyViewController *weakMyController = myController;
myController.completionHandler = ^(NSInteger result) {
MyViewController *strongMyController = weakMyController;
if (strongMyController)
{
[strongMyController dismissViewControllerAnimated:YES completion:nil];
}
else
{
// Probably nothing...
}
};
[self presentViewController:myController animated:YES completion:^{}];
