Question

我正在制作需要访问相机和相机胶卷的通用iOS应用程序。我怎么会这样呢？我还没有显示代码，因为该应用程序主要基于此。

Answer 1

此答案仅适用于物理设备！

访问摄像头：

- (void)takePhoto {

    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.allowsEditing = YES;
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;

    [self presentViewController:picker animated:YES completion:NULL];

}

访问相机胶卷：

- (void)selectPhoto {

    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.allowsEditing = YES;
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

    [self presentViewController:picker animated:YES completion:NULL];


}

实现UIImagePickerController的委托方法：

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

    UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
    self.imageView.image = chosenImage;

    [picker dismissViewControllerAnimated:YES completion:NULL];

}

而且这个：

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {

    [picker dismissViewControllerAnimated:YES completion:NULL];

}

源代码here

Answer 2

您需要在.h文件中声明委托UIImagePickerControllerDelegate

并使用此代码打开相机。

// Pick image from camera

- (IBAction)captureImage:(id)sender
{   
    if (! [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

        UIAlertView *deviceNotFoundAlert = [[UIAlertView alloc] initWithTitle:@"No Device" message:@"Camera is not available"
                                                                 delegate:nil
                                                        cancelButtonTitle:@"Okay"
                                                            otherButtonTitles:nil];
        [deviceNotFoundAlert show];

    } else {

        UIImagePickerController *cameraPicker = [[UIImagePickerController alloc] init];
        cameraPicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        cameraPicker.delegate =self;
        // Show image picker
        [self presentViewController:cameraPicker animated:YES completion:nil];
    }
}

Answer 3

你正在寻找的可能是这个。

这是UIImagePickerController类参考：

https://developer.apple.com/library/ios/documentation/uikit/reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html

这是整体相机编程和一个有用的文档。

https://developer.apple.com/library/ios/documentation/AudioVideo/Conceptual/CameraAndPhotoLib_TopicsForIOS/Articles/PickinganItemfromthePhotoLibrary.html

祝你好运！

如何访问相机＆amp;相机卷Objective-C

3 个答案: