Value: 15
Level for ComponentCallbacks2.onTrimMemory(int): the process is not an expendable background process, but the device is running extremely low on memory and is about to not be able to keep any background processes running. Your running process should free up as many non-critical resources as it can to allow that memory to be used elsewhere. The next thing that will happen after this is IComponentCallbacks.OnLowMemory called to report that nothing at all can be kept in the background, a situation that can start to notably impact the user.