ios – 使用AutoLayout将UIView的高度调整到其内容

200新X- 200 X- 200 X- 200 200 X- 200 X- 200 200 X- 200 200：在我目前的实现中,这是我所得到的：

看来,containerView已经正确地获得了垂直居中的位置,但是它的宽度和高度都是零,因此没有正确显示.如何指示containerView适合其大小的内容？代码段附在下面.

谢谢！

UITableViewCell初始化程序

- (id)initWithReuseIdentifier:(Nsstring *)reuseIdentifier
{
    if (self = [super initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseIdentifier]) {
        self.titleLabel = [[UILabel alloc] init];
        self.titleLabel.font = [UIFont boldSystemFontOfSize:[UIFont smallSystemFontSize]];
        self.titleLabel.text = @"ノートタイトル";

        self.coverImage = [[UIView alloc] init];
        self.coverImage.backgroundColor = [UIColor carrotColor];

        self.avatarImage = [[UIView alloc] init];
        self.avatarImage.backgroundColor = [UIColor emerlandColor];

        self.authorLabel = [[UILabel alloc] init];
        self.authorLabel.font = [UIFont systemFontOfSize:[UIFont smallSystemFontSize]];
        self.authorLabel.text = @"著者の名前";

        self.containerView = [[UIView alloc] init];
        self.containerView.backgroundColor = [UIColor lightGrayColor];
        [self.containerView addSubview:self.titleLabel];
        [self.containerView addSubview:self.avatarImage];
        [self.containerView addSubview:self.authorLabel];

        [self.contentView addSubview:self.containerView];
        [self.contentView addSubview:self.coverImage];

        self.selectionStyle = UITableViewCellSelectionStyleNone;
        [self updateConstraintsIfNeeded];
    }

    return self;
}

UITableViewCell updateConstraints

- (void)updateConstraints
{
    [super updateConstraints];

    [self.coverImage mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.contentView).with.offset(20);
        make.top.equalTo(self.contentView).with.offset(5);
        make.bottom.equalTo(self.contentView).with.offset(-5);

        make.width.equalTo(self.coverImage.mas_height).multipliedBy(0.75);
    }];

    [self.containerView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.coverImage.mas_right).with.offset(10);
        make.centerY.equalTo(self.contentView);
    }];

    [self.titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.containerView);
        make.top.equalTo(self.containerView);
    }];

    [self.avatarImage mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.titleLabel.mas_bottom).with.offset(5);
        make.left.equalTo(self.titleLabel);

        make.width.equalTo(@20);
        make.height.equalTo(@20);
    }];

    [self.authorLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.avatarImage.mas_right).with.offset(5);
        make.centerY.equalTo(self.avatarImage);
    }];
}