update flash method
update flash method

protosphere/LLSimpleCamera,BirdCage-AU/LLSimpleCamera,ywzw2013/LLSimpleCamera,JustineKay/LLSimpleCamera,hapiben/llsimplecamera,Adorkable-forkable/LLSimpleCamera,lisbakke/LLSimpleCamera,omergul123/LLSimpleCamera,csjlengxiang/LLSimpleCamera,SergioChan/LLSimpleCamera,leonereveel/LLSimpleCamera,xswm1123/LLSimpleCamera,swissmanu/LLSimpleCamera