iOS开发之View属性hidden, opaque, alpha的区别

Others 2021-11-21 01:33:45 views: null

alpha支持animation, hidden和opaque不支持

hidden开销小,alpha=0透明开销大,如果效果一样,用hidden好一点.

hideen的时候view是不接收事件的,但alpha为0接收

当把View设置为透明的背景时,一般把opaque设置为NO,可以减少开销,对内存也好.

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Origin blog.csdn.net/u014641631/article/details/48054045

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