我有一个UIImageView
,它的图片是通过UIImagePicker
设置的
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
[picker dismissViewControllerAnimated:YES completion:nil];
self.gImage.image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
}
我“尝试”将这个图像转换为NSData
并与Core Data一起保存:
NSData *imageData = UIImagePNGRepresentation(self.gImage.image);
NSString *savedData = [[NSString alloc]initWithData:imageData encoding:NSUTF8StringEncoding];
//am is a pointer to my entities class. imageData is just a NSString attribute
am.imageData = savedData;
NSError *error;
if (![self.managedObjectContext save:&error]) {
//Handle Error
} else {
[self dismissViewControllerAnimated:YES completion:nil];
}
然后我尝试在另一个文件中加载图片:
self.cell.gImage.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:self.myEntity.imageData]]];
我不明白为什么这不起作用。任何帮助都将不胜感激!