Difference between calling getActivity().startActivity(); and startActivity(); inside Fragment

问题

start Activity from inside a Fragment can be done with both codes :

startActivity(Intent);

getActivity().startActivity();

what is the difference ??

Note : I know the difference when it becomes to startActivityForResult(); so please don't post any thing relates to this method.

Thanks

回答1:

Nothing. The Fragment docs are pretty clear on this:

public void startActivity (Intent intent)

Call startActivity(Intent) from the fragment's containing Activity.

回答2:

The biggest difference:

Fragment#startActivity() check if mHost == null throw "Fragment this is not attached to Activity" exception. If you use getActivity().startActivity() it will return a nullable value. If mHost is null you will get NullPointException i.

来源：https://stackoverflow.com/questions/19759668/difference-between-calling-getactivity-startactivity-and-startactivity-i