- React Native still has the concept of
style inheritance, but limited totext subtrees. - All dimensions in React Native are
unitless, and representdensity-independent pixels. - If a parent does not have either
a fixed widthandheightorflex, the parent will have dimensions of 0 and theflexchildren will not be visible. - the
flexparameter only supporting a single number. - For
stretchto have an effect, children must not havea fixed dimensionalongthe secondary axis. - Pressing the button will call the
"onPress"function. - The
ScrollViewworks best to present a small amount of things of a limited size. All the elements and views of aScrollVieware rendered, even if they are not currently shown on the screen. If you have a long list of more items than can fit on the screen, you should use aFlatListinstead.
网友评论