/** Called when mSyncObject lock is held */ private void checkCurrentState() { int targetState; if (mEnabled && mSurfaceExist && getVisibility() == VISIBLE) { targetState = STARTED; } else { targetState = STOPPED; } if (targetState != mState) { /* The state change detected. Need to exit the current state and enter target state */ processExitState(mState); mState = targetState; processEnterState(mState); } }