我试图在左边有一个带有图像和标题的UIlabel,在右边有一个带有项目符号的描述列表,为此我正在使用NSAttributedString,如下所示：
NSMutableParagraphStyle *pStyle = [[NSMutableParagraphStyle alloc] init];
pStyle.tabStops =
@[ [[NSTextTab alloc] initWithTextAlignment:NSTextAlignmentLeft location:tabLocation options:[NSDictionary dictionary]] ];
NSMutableAttributedString *attString = [[NSMutableAttributedString alloc] init];
NSTextAttachment *textAttachment = [[NSTextAttachment alloc] init];
textAttachment.image = [UIImage imageNamed:@"test_image"];
textAttachment.bounds = CGRectMake(0,-3,15,15);//resize the image
attString = [NSAttributedString attributedStringWithAttachment:textAttachment].mutableCopy;
[attString appendAttributedString:[[NSAttributedString alloc]
initWithString:[NSString stringWithFormat:@"title\t\u2022 %@",[@[ @"description1",@"description2" ]
componentsJoinedByString:@"\n\t\u2022 "]]
attributes:@{NSParagraphStyleAttributeName : pStyle}]];
label.attributedText = attString;
我希望右边的列表保持对齐,但事实并非如此,这是我得到的结果：
解决方法
问题在于NSTextTab中的location参数
>根据描述,位置参数有助于从左边距定位文本.所以这就是我们需要的,只需替换下面的行
pStyle.tabStops = @[ [[NSTextTab alloc] initWithTextAlignment:NSTextAlignmentLeft location:tabLocation options:[NSDictionary dictionary]] ];
同
pStyle.tabStops = @[[[NSTextTab alloc] initWithTextAlignment:NSTextAlignmentLeft location:[self getTextLocationFor:@"test"] options:[NSDictionary dictionary]] ];
>添加getTextLocationFor：方法来计算位置,如下所示
-(CGFloat)getTextLocationFor:(NSString *)inputStr{
CGSize maximuminputStringWidth = CGSizeMake(FLT_MAX,30);
CGRect textRect = [inputStr boundingRectWithSize:maximuminputStringWidth
options:NSStringDrawingUsesLineFragmentOrigin
attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:15]}
context:nil];
UIImageView * testImage = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"close_red"]];//Change image name with yours
return textRect.size.width + testImage.frame.size.width +2;
}
>那就是我们准备好运行你的项目,现在一切都会好的.
结果：
