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关于Activity可见与前台的区分? #2
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前台必定可见,可见未必前台? |
@kyze8439690 |
再求教一个问题,可以覆盖在Activity上的有dialog,popupwindow,toast。只有dialog会占用前台? |
@kyze8439690 “可以覆盖在Activity上的有dialog,popupwindow,toast。只有dialog会占用前台?” |
看来不能从语义上理解,可见只是一种状态,而不是意义上的可见? 或者说activity启动的时候能看见windowBackground就是可见,看见contentView就是前台? @kyze8439690 https://github.com/kyze8439690 — |
"可见"是不是可以理解Activity已经被创建,它可能正好处于前台这个状态,也有可能在后台等待再次唤起。"前台"应该是“可见”中的一种状态。 |
在第一章中经常看到”可见“和”前台“两个概念。
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