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When app being launched, how to determine it is cold start or not? By cold start, I mean the app launched from the very beginning, instead of just resumed from a previous state.
:Edit: elaborate my question: I'm trying to find the app's launch mode: cold start or warm start. Cold start means the app is never launched before or not in background, so it needs a complete launch. Warm start means it is still in background, so it can resume and start faster. How to distinguish these two start modes programmatically?
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There's no reliable way to detect first run, as the shared preferences way is not always safe, the user can delete the shared preferences data from the settings! a better way is to use the answers here Is there a unique Android device ID? to get the device's unique ID and store it somewhere in your server, so whenever ...
How do you know if the app is opened for the first time Android? You can use the SharedPreferences to identify if it is the "First time" the app is launched. Just use a Boolean variable ("my_first_time") and change its value to false when your task for "first time" is over.
Cold start (or cold boot) may also refer to a booting process of a single computer (or virtual machine). In this case services and other startup applications are executed after reboot. The system is typically made available to the user even though startup operations are still performed and slow down other operations.
Ans- If the motor is continuous duty and running for some time, then a restart after tripping is a basically hot start. Cold start is an initial start, after not having run for a relatively long period of time.
If the app is still running in the background it will call onResume first and not onCreate at all.
If you mean the first time it was ever launched on a device then use sqlite or shared preferences to store data and at the beginning check to see if its there.
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