阴影

//shadowColor阴影颜色

View.layer.shadowColor = [UIColor blackColor].CGColor;

//shadowOffset阴影偏移,x向右偏移4，y向下偏移4，默认(0, -3),这个跟shadowRadius配合使用

View.layer.shadowOffset = CGSizeMake(4,4);

//阴影透明度，默认0

View.layer.shadowOpacity = 0.8

//阴影半径，默认3

View.layer.shadowRadius = 4;

iOS 8 WkWebView 网页的配置和前进，后退，js 交互和进度条的加载

http://blog.csdn.net/zhoushuangjian511/article/details/50380657

把系统文件包放在的位置

Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

修改navigationbar右侧按钮离屏幕边缘位置

http://www.cnblogs.com/Apologize/p/5764852.html