又他妈的是 文件名 一样，一条指令的 时间，

-(void)writeJPGToFile:(IMMessageInfo *)imMessageInfo

{

    NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:imMessageInfo.pic_thumbnail_networkPath]];

    UIImage *mImage = [UIImage imageWithData:imageData];

    mImage = [mImage imageByScalingToDefaultWidth:100.0];

    mImage = [mImage imageByScalingToDefaultSizeAccordingToHeight:100.0];

    imageData = UIImageJPEGRepresentation(mImage, 1);

    NSString *fileName  = [NSString stringWithFormat:@"%.0f",imMessageInfo.messageId];

    NSString *localFilePath = [ChatVoiceRecorderVC getPathByFileName:fileName ofType:@"jpg"];

    [imageData writeToFile:localFilePath atomically:NO];

    imMessageInfo.pic_thumbnail_localPath = localFilePath;

    imMessageInfo.pic_width = mImage.size.width;

    imMessageInfo.pic_height = mImage.size.height;

    

}