IOS  开发获取本地图片路径及上传

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NSString *path_document=NSHomeDirectory();
//设置存储文件路径！！！！！！文件路径的名字一定要区分开
  NSString *imagePath=[path_document stringByAppendingString:[NSString stringWithFormat:@"/Documents/%@%@%@.png",_shopObj.shopPicture,_shopObj.shopColor,self.shopObj.shopName]];
//写入文件
  [UIImagePNGRepresentation(img) writeToFile:imagePath atomically:YES];
//将地址存储到自己设置的Model模型中
  self.shopObj.shopPicture=imagePath;

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NSString *path_document=NSHomeDirectory();
  NSString *imagePath=[path_document stringByAppendingString:[NSString stringWithFormat:@"/Documents/%@%@%@.png",_shopObj.shopPicture,_shopObj.shopColor,self.shopObj.shopName]];
  UIImage *img=[UIImage imageWithContentsOfFile:imagePath];
  cell.imgV.image=img;

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NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDir = [paths objectAtIndex:0];

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NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *cachesDir = [paths objectAtIndex:0];

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NSString *tmpDir = NSTemporaryDirectory();