please clone and run the project, this project is a demo.
# start scaning
- (void) startScaningRepeatCount:(int)count;
- (void) startScaningRepeatCount:(int)count Duration:(int)duration;
- (void) startScaningRepeatCount:(int)count Duration:(int)duration HeightFactor:(float) factor;
# stop scaning
- (void) stopScaning;