I’m working on an app that doesn’t support screen rotation. Do I really need to save the instance state of all my activities? How rare is it for android to kill activities? If the activity is killed and restored it will just look to the user as it did when they first came to it, which was probably quite a while ago anyway if the system has killed it. It doesn’t seem like such a bad user experience to me if it is rarely going to happen. What do you think?
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It is a catastrophic UX if an application loses its state just because I went to the settings to change the screen brightness. This happens frequently on 512MB RAM devices – which are still sold in large quantities. There are even devices with 256MB produced right now.
Yes, it happens a lot. It will happen to certain users much more frequent than to others. Those users will have no pardon with your app.