Activity生命周期进一步探讨

从官网和书籍上看到的对Activity生命周期所涉及方法比较少，实际应用中还需要考虑到其他一些方法。
第一种情况当Activity不可见后没有被销毁，又再次可见

05-27 21:17:29.429 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onPause
05-27 21:17:29.859 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onSaveInstanceState
05-27 21:17:29.859 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onStop

05-27 21:17:32.129 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onActivityResult
05-27 21:17:32.129 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onNewIntent
05-27 21:17:32.129 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onRestart
05-27 21:17:32.129 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onStart
05-27 21:17:32.129 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onResume

第二种情况当Activity不可见后被销毁，又再次可见

05-27 21:17:29.429 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onPause
05-27 21:17:29.859 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onSaveInstanceState
05-27 21:17:29.859 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onStop

05-27 21:12:48.409 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onCreate
05-27 21:12:48.439 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onStart
05-27 21:12:48.439 20963-20963/com.as.wangkai.lifecycle E/MainActivity:onRestoreInstanceState
05-27 21:12:48.439 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onNewIntent
05-27 21:12:48.439 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onActivityResult
05-27 21:12:48.439 20963-20963/com.as.wangkai.lifecycle E/MainActivity: onResume