问题
In my app I needed to call findViewbyId() from both onCreate() and from WebChromeClient.onCompletion(). To avoid findViewbyId() returning null I resorted to calling Activity.setContentView(int viewResID) before calling findViewbyId().
It works, but now I am wondering whether I may have created a "time-bomb" in my code down the road.
Are there any caveats that I need to keep in mind when doing something like this?
回答1:
There is no problem in doing so. You have to reinitialize references (every findViewById needs to be called again) and it might be troublesome if you do it A LOT of times, but it is not a time bomb at all.
来源：https://stackoverflow.com/questions/5808026/side-effects-of-calling-activity-setcontentview-twice-in-a-row