[jira] [Created] (WEEX-239) add more interface for downloadImage

[xingZhang (JIRA)]

xingZhang created WEEX-239:
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             Summary: add more interface for downloadImage
                 Key: WEEX-239
                 URL: https://issues.apache.org/jira/browse/WEEX-239
             Project: Weex
          Issue Type: Improvement
          Components: iOS
            Reporter: xingZhang
            Assignee: xingZhang


add more interface for downloadImage, you can obtain more information while 
downloading image



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