设置宽度以匹配ConstraintLayout中的约束 [英] Set width to match constraints in ConstraintLayout

问题描述

我想将视图的左右两侧限制在其父视图的空白处，并使其填充分配的空间.但是，将width设置为match_parent或wrap_content似乎会产生相同的结果.

I would like to constrain a View's left and right sides to it's parent view's margins and make it fill the allotted space. However, setting width to either match_parent or wrap_content appears to produce the same result.

是否有等同于match_constraints的东西(与match_parent和wrap_content相反)? match_parent和wrap_content是否会影响布局，还是在新的约束布局中将其忽略?

Is there something equivalent to match_constraints (as opposed to match_parent and wrap_content)? Do match_parent and wrap_content affect the layout or are they ignored in the new constraint layout?

在我最喜欢的平台上喜欢这个新的布局系统！

Loving this new layout system for my favorite platform!

推荐答案

match_parent不支持.使用0dp，您可以将约束视为可扩展的"，而不是填补剩下的内容".

match_parent is not supported. With 0dp, you can think of your constraints as 'scalable' rather than 'filling whats left'.

此外，0dp可以由一个位置定义，其中match_parent依赖于其位置(x，y和宽度，高度)的父级

Also, 0dp can be defined by a position, where match_parent relies on it's parent for it's position (x,y and width, height)

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