UIImageWriteToSavedPhotosAlbum问题

Question

我尝试使用按钮拍照后从相机保存照片。

这是我的代码：

-(IBAction)savePhoto{

    UIImageWriteToSavedPhotosAlbum(img.image, nil, nil);    

}

-(IBAction)takePic {

    ipc = [[UIImagePickerController alloc]init];
    ipc.delegate = self;
    ipc.sourceType = UIImagePickerControllerSourceTypeCamera; 
    [self presentModalViewController:ipc animated:YES];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

    img.image = [info objectForKey:UIImagePickerControllerOriginalImage];

    [[picker parentViewController]dismissModalViewControllerAnimated:YES];
    [picker release];
}

但我不知道为什么不保存任何东西！

Answer 1

我怀疑你的图像在保存前已经发布了：

img.image = [info objectForKey:UIImagePickerControllerOriginalImage];

上面的行返回一个自动释放的对象。我建议您保留下图所示的图像，然后在保存图像时将其释放。

img.image = [[info objectForKey:UIImagePickerControllerOriginalImage] retain];

Answer 2

检索图片后，在[self savePhoto]内致电-imagePickerController:didFinishPickingMediaWithInfo:。