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by jacquesm 4370 days ago
> So developers only check the ones they know "could" be null, in normal operation.

Not the good ones. Normal operation isn't when you're dealing with a mobile device, there could be any number of reasons why your app can't reach a certain service delivered by some API so better to be prepared for that eventuality.
2 comments
67726e 4370 days ago
Yes, a good programmer writes a robust application, but ignoring the specifics of this case is being entirely disingenuous. If I write an app to use the Play API and only distribute it via the Play Store then there is no good reason for me to spend my time writing `if (foo != null)` all over the place to placate someone trying to circumvent the official way of downloading my application.

You have to balance the tradeoffs of bloated code and pointless error checking with adding features and improving the program. The more error checking code one writes the more one must maintain and the higher the potential for bugs.

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jacquesm 4370 days ago
> The more error checking code one writes the more one must maintain and the higher the potential for bugs.

That's an artifact of the chosen environment. Not checking for errors in that environment is a bug.

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67726e 4370 days ago
Artifact or not, it's still something one must maintain. Not checking for errors is not a bug, it is you choosing to not support a fringe group of users because it is worth your time and effort. You can call it whatever you like, but that is the reality of the situation. There are tradeoffs to be made and code to be maintained.
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josephlord 4370 days ago
I don't think it is a matter of not being able to reach Google the network service but the Google provided services that run on the phone (they may well then access the network and provide useful error messages that you fully handle). It is more like a case of a missing library than a loss of network connectivity. There is a good argument that you should always check anyway but there is also the argument that the app is only designed to run on devices with the Google Play services installed and that you only sell it that way so anyone without must be pirating anyway.

Besides that what do you do to handle the loss of something your app requires as a basic service? A nice error beats NullPointer but not by much.

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