Application background Applications need to run IOS system 6.1 above support the Xcode environment to achieve consistent with the system of the Gaussian blur using system uitoolbar. Don't need screenshot so the background can be changed dynamically Key Technology Using uitoolbar system to realize fuzzy effect. Therefore, the fuzzy real effect completely and system control center effect, support dynamic background, so the final fuzzy effect and the other on the screen screenshots and fuzzy processing effect is completely different