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奇葩，有人知道为啥没？我同问，虽然没碰见过。另外我也有个小问题http://bbs.reactnative.cn/topic/3966/stacknavigator标题更新问题
已经找到了原因了。好像release版本不可以extends View，extends Componet 就对了。有人知道具体原因不呢？
