ios 自动布局水平跟垂直居中
时间:2016-06-15 12:17:58
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[view addConstraint:[NSLayoutConstraint constraintWithItem:segment attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:view attribute:NSLayoutAttributeCenterX multiplier:1.0f constant:00.0f]];
[view addConstraint:[NSLayoutConstraint constraintWithItem:segment attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:view attribute:NSLayoutAttributeCenterY multiplier:1.0f constant:00.0f]];
原文:http://www.cnblogs.com/Xujg/p/5586732.html
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