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javaandroidframe-rate

Making an FPS counter for an Android app (having the .apk only)

I want to make an FPS counter for Android apps. While doing research I found a lot of examples for doing this when you have access to the source code of the app, since the counting is done in the main drawing loop.

The problem is I don't have the source code, I have only the .apk of the app so there is no way to modify it. My question is, how could this be done? (at least an idea to start with). And I am sure it can be done somehow, I've seen an app like this on Google Play.

Thanks!

Solution

  • I just installed the app.

    At the beginning they ask for the activation of USB debugging on the device. And this why it needs a connection to the PC.

    So this is how they are able to get such kind of information.

    I would advise you to look at USB debugging of Android apps and see what is possible there (such as taking multiple screenshots per second)