最近《陈情令》特别的红，而且微博上关于这部电视剧的话题也十分多，但是汪海林发问批《陈情令》是怎么回事呢？汪海林是谁呢？为什么要这个说《陈情令》可能很多人对这都特别的好奇，那么现在就来了解一下吧，希望可
i have a question in developing some android program... i use surfaceview for camera preview. it works fine, but has one problem when i start other activity (by clicking something) and then back from
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