ios之VFL的补充(二)
[self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[languageImage(15)]" options:0 metrics:nil views:viewsDictionary]]; [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[forkImage(==languageImage)]" options:0 metrics:nil views:viewsDictionary]];
表明 forkImage的高度与 languageImage的高度一样。