iPhone相机和图像选择器

Question

我发现了很多关于使用UIImagePickerController让用户从照片应用程序的数据中选择他们想要的图像的信息。我想知道如何在3.0上创建相同的效果，因为它看起来好像很多旧的代码工作了。另外，我希望用户能够从相同的弹出窗口中拍摄新照片。

感谢您的帮助！

Answer 1

工作在3.0，与以前相同;我不相信有任何改变。我刚分配/初始化一个的UIImagePickerController，并将它传递给presentModalViewController，像这样：

- (void) chooseImageFromLibrary { 
    if(![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) return; 

    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init]; 
    imagePickerController.delegate = self; 
    imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
    imagePickerController.allowsImageEditing = YES; 
    [self presentModalViewController:imagePickerController animated:YES]; 
} 

- (void) chooseImageFromCamera { 
    if(![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) return; 

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

实现委托方法，太：

- (void)imagePickerController:(UIImagePickerController *)picker 
     didFinishPickingImage:(UIImage *)image 
        editingInfo:(NSDictionary *)editingInfo { 
    // Do something with the image here. 

    [[picker parentViewController] dismissModalViewControllerAnimated:YES]; 
} 

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { 
    [[picker parentViewController] dismissModalViewControllerAnimated:YES]; 
}