I'd like to know wether it is possible to read some data from a foreign application in Android (like reading runtastics pulse, distance, pace e.g.) and include it into my own application?
I'm not asking because I wanna do some bad stuff with it, I'd just like to know that for some interesting Pebble development tasks.
By design, you absolutely can not do this (It must violate almost all the security principles).
Furthermore, even if you find a hack to do this, it will get you kicked of the Play Store if it is detected.
For the different apps you want to integrate, check their dev websites in order to see if they have an API/SDK allowing you to read the data you want to manipulate.
来源：https://stackoverflow.com/questions/16388615/can-i-read-another-applications-memory