- SDWebImage
: CGBitmapCon - Failed to connect to github.com
- Error Domain=NSURLErrorDomain C
- SDWebImage Error Domain=NSURLErr
- SDWebimage Error Domain=NSURLErr
- Ios SDWebimage Error Domain=NSUR
- SDWebImage 报错Error Domain=NSURLE
- Pod SDWebImage/WebP 失败, Error in
- iOS -SDWebImage 图片不显示问题（webp和png
- SDWebImage源码学习(一) --- SDWebImage
问题：SDWebImage IOS 9 无法成功抓取png格式图片
```
an 13 01:05:54Dota2Heros[6498] : CGContextDrawImage: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
Jan 13 01:05:54Dota2Heros[6498] : CGBitmapContextCreateImage: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
2016-01-13 01:05:54.656 Dota2Heros[6498:383059] http://cdn.dota2.com/apps/dota2/images/abilities/drow_ranger_marksmanship_hp1.png
Jan 13 01:05:54Dota2Heros[6498] : CGBitmapContextCreate: unsupported parameter combination: set CGBITMAP_CONTEXT_LOG_ERRORS environmental variable to see the details
Jan 13 01:05:54Dota2Heros[6498] : CGContextDrawImage: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
Jan 13 01:05:54Dota2Heros[6498] : CGBitmapContextCreateImage: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
```
解决方法：iOS SDWebImage can not load PNG image · Issue #1335 · rs/SDWebImage · GitHub
ios学习中, 感谢 @mythodela!
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