image存本地

1 //3.从上下文中取出绘制好的图片2      UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();3      4      NSData *data = UIImagePNGRepresentation(newImage);5      6      NSString *path = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"abc.png"];7      NSLog(@"%@", path);8      [data writeToFile:path atomically:YES];