iOS-View Gradient

////YVIEWGRADIENT.M//AoleYou20170907////Created by XY IOS on 2018/4/25.//Copyright 2018-Chen Shiyu. All rights reserved.//#import "YViewGradient.h"@implementationyviewgradient/** Button Gradient @param viewid button*/+(void) Changealphawithviewid: (UIButton *) viewid{Cagradientlayer*_gradlayer =[Cagradientlayer layer]; Nsarray*colors =[Nsarray arraywithobjects: (ID) [[Uicolor Colorwithwhite:0Alpha1] Cgcolor], (ID) [[Uicolor Colorwithwhite:0Alpha0.8] Cgcolor], (ID) [[Uicolor Colorwithwhite:0Alpha0.6] Cgcolor], nil];    [_gradlayer setcolors:colors]; //gradient start and end points, point represents vectors[_gradlayer Setstartpoint:cgpointmake (1.0f,0.0f)]; [_gradlayer Setendpoint:cgpointmake (0.0f,0.0f)];    [_gradlayer SetFrame:viewid.bounds]; [Viewid.layer Setmask:_gradlayer];}@end

iOS-View Gradient