Bug: StartSampling updates mLastTimeReading while not make any read

[antonkov]

If mHandler will start execute addSample() at least 1ms after updating mLastTimeReading in startSampling() then IF in addSample will not work and we will add sample with incorrectly small time

if (timeInMs == 0 || ...

public void startSampling() { if (mSamplingCounter.getAndIncrement() == 0) { mHandler.startSamplingThread(); mLastTimeReading = SystemClock.elapsedRealtime(); } }