Farm Raised Salmon vs Wild Caught Salmon. Letâs say youâre at the grocery store and you see âfresh Atlantic salmonâ on sale for $7.99/pound. Next to it you see âWild Pacific Sockeye salmonâ for $14.99/pound.
Android activities are stored in the activity stack. Going back to a previous activity could mean two things. You opened the new activity from another activity with startActivityForResult. In that case you can just call the finishActivity() function from your code and it'll take you back to the previous activity. Keep track of the activity stack. Whenever you start a new activity with an intent you can specify an intent flag like FLAG_ACTIVITY_REORDER_TO_FRONT or FLAG_ACTIVITY_PREVIOUS_IS_TOP.
When you upgrade an app, Android does not automatically retain a copy of the old version of the APK. We've previously looked at how you can create backups of your apps, and this is one way to ensure you have the option to downgrade. But there is another route you can go down.