将 UITextView 或 UILabel 添加到 UIAlertView 作为"accessoryView" ？

Question

苹果评论是否允许以下编码，即添加文本视图或标签作为"附件视图"..我在很多地方读到它不是一个公开的 api，我们不应该这样做。但很少有人说我们可以...在我们发送审核时是否会被拒绝。请指导我...

UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(0, 0, 100, 200)];
textView.selectable = YES;
textView.editable = NO;
textView.attributedText = attributedStr;
UIAlertView *customAlert = [[UIAlertView alloc] initWithTitle:@"Title" message:nil delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil, nil];
[customAlert setValue:textView forKey:@"accessoryView"];

Answer 1

对于"在警报上添加文本"视图，请使用此代码

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Some title"
                                                                         message:@"nnnnnnnn"
                                                                  preferredStyle:UIAlertControllerStyleAlert];
alertController.view.autoresizesSubviews = YES;
UITextView *textView = [[UITextView alloc] initWithFrame:CGRectZero];
textView.translatesAutoresizingMaskIntoConstraints = NO;
textView.editable = YES;
textView.dataDetectorTypes = UIDataDetectorTypeAll;
textView.text = @"Some really long text here";
textView.userInteractionEnabled = YES;
textView.backgroundColor = [UIColor whiteColor];
textView.scrollEnabled = YES;
NSLayoutConstraint *leadConstraint = [NSLayoutConstraint constraintWithItem:alertController.view attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:textView attribute:NSLayoutAttributeLeading multiplier:1.0 constant:-8.0];
NSLayoutConstraint *trailConstraint = [NSLayoutConstraint constraintWithItem:alertController.view attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:textView attribute:NSLayoutAttributeTrailing multiplier:1.0 constant:8.0];
NSLayoutConstraint *topConstraint = [NSLayoutConstraint constraintWithItem:alertController.view attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:textView attribute:NSLayoutAttributeTop multiplier:1.0 constant:-64.0];
NSLayoutConstraint *bottomConstraint = [NSLayoutConstraint constraintWithItem:alertController.view attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:textView attribute:NSLayoutAttributeBottom multiplier:1.0 constant:64.0];
[alertController.view addSubview:textView];
[NSLayoutConstraint activateConstraints:@[leadConstraint, trailConstraint, topConstraint, bottomConstraint]];
[self presentViewController:alertController animated:YES completion:^{
}];