An error occurred while downloading the file in the 2G network;

(Offset = is. Read (buffer, 0, 1024 ))! =-1 & downloadtaskinfo. getstatus () = downloadtaskinfo. download_loading

The above is the input stream download judgment, the file size is obtained normally, it is strange that only 1024 bytes are returned in the second 424 bytes, and then 3rd loops are stuck, no exception thrown, the stream is not over either;

The problem is solved;

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It seems that because mobile 2G shields the zip package, the backend technology is changed to OK;