ios - iOS NSTextAttachment image not showing

Question

NSTextAttachment lock image cut off at the edge but when the line does not breaks at the edge then the lock icon can be seen. I want the icon to move to the next line like a word move to the next line.

Here are the example:

    NSTextAttachment *attachment = [[NSTextAttachment alloc] init];
    attachment.image = [UIImage imageNamed:@"lock.png"];
    NSString *stringHeadline = @"This is a example sample sentence. Why I do";
    NSAttributedString *attachmentLock = [NSAttributedString attributedStringWithAttachment:attachment];
    NSAttributedString *myText = [[NSMutableAttributedString alloc] initWithString:stringHeadline];
    NSMutableAttributedString *lockString = [[NSMutableAttributedString alloc] initWithAttributedString:myText];

    [lockString appendAttributedString:attachmentLock];
    lblHeadline.attributedText = lockString;
    [lblHeadline sizeToFit];

Lock icon gone missing when the text near the edge.

Answer 1

NSTextAttachment の後にスペースを追加するだけです。そうしないと、十分なスペースがない場合に通常のテキストが行うように、NSTextAttachment が新しい行に変更されません。これはAppleのバグだと思います。

コードは次のようになります。

NSTextAttachment *attachment = [[NSTextAttachment alloc] init];
attachment.image = [UIImage imageNamed:@"lock.png"];
NSString *stringHeadline = @"This is a example sample sentence. Why I do";
NSAttributedString *attachmentLock = [NSAttributedString attributedStringWithAttachment:attachment];
NSAttributedString *myText = [[NSMutableAttributedString alloc] initWithString:stringHeadline];
NSMutableAttributedString *lockString = [[NSMutableAttributedString alloc] initWithAttributedString:myText];

[lockString appendAttributedString:attachmentLock];
/** 
 * Here I'm adding a space after NSTextAttachment just to make sure that
 * the NSTextAttachment will auto change to next line like normal text does.
 * Otherwise the NSTextAttachment does not move to the new line.
 */
[lockString appendAttributedString: [[NSAttributedString alloc] initWithString:@" "]];
lblHeadline.attributedText = lockString;
[lblHeadline sizeToFit];

私の Post Attach Stars to the End of a UILabel をチェックして、私のソリューションの詳細を確認してください。