Question

在iPhone应用程序中，我想从Camera＆amp; amp;通过编程方式保存到照片库。在iPhone模拟器中可以吗？所以请告诉我你的任何链接或材料。

提前致谢

Answer 1

您可以使用uiimagepickercontroller来实现此目的。首先，导入MobileCoreServices.framework。然后拿起相机：

if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        NSArray *media = [UIImagePickerController
                          availableMediaTypesForSourceType: UIImagePickerControllerSourceTypeCamera];

        if ([media containsObject:(NSString*)kUTTypeImage] == YES) {
            UIImagePickerController *picker = [[UIImagePickerController alloc] init];
            picker.sourceType = UIImagePickerControllerSourceTypeCamera;
            //picker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
            [picker setMediaTypes:[NSArray arrayWithObject:(NSString *)kUTTypeImage]];

            picker.delegate = self;
            [self presentModalViewController:picker animated:YES];
            //[picker release];

        }
        else {
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Unsupported!"
                                                            message:@"Camera does not support photo capturing."
                                                           delegate:nil
                                                  cancelButtonTitle:@"OK"
                                                  otherButtonTitles:nil];
            [alert show];
            [alert release];
        }

    }
    else {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Unavailable!"
                                                        message:@"This device does not have a camera."
                                                       delegate:nil
                                              cancelButtonTitle:@"OK"
                                              otherButtonTitles:nil];
        [alert show];
        [alert release];
    }

然后，通过实现uiimagepickercontrollerdelegate和保存功能来保存照片：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    NSLog(@"Media Info: %@", info);
    NSString *mediaType = [info valueForKey:UIImagePickerControllerMediaType];

    if([mediaType isEqualToString:(NSString*)kUTTypeImage]) {
        UIImage *photoTaken = [info objectForKey:@"UIImagePickerControllerOriginalImage"];

        //Save Photo to library only if it wasnt already saved i.e. its just been taken
        if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {
            UIImageWriteToSavedPhotosAlbum(photoTaken, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
        }


    }

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

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo {
    UIAlertView *alert;
    //NSLog(@"Image:%@", image);
    if (error) {
        alert = [[UIAlertView alloc] initWithTitle:@"Error!"
                                           message:[error localizedDescription]
                                          delegate:nil
                                 cancelButtonTitle:@"OK"
                                 otherButtonTitles:nil];
        [alert show];
        [alert release];
    }

}

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

有关图片的更多信息：didFinishSaving ....可以在这里找到

http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIKitFunctionReference/Reference/reference.html

另请看这篇文章

https://stackoverflow.com/questions/1282830/uiimagepickercontroller-uiimage-memory-and-more

Answer 2

在模拟器中无法实现。您必须使用该设备。

Answer 3

我希望你意识到模拟器没有摄像头.....所以我想那是不可能的。您绝对可以使用设备....您可以使用UIImagePickerController来捕获图像。

Answer 4

以编程方式拍摄照片需要3个先决条件：

设备需要通过

进行相机检查

 if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])

需要隐藏相机控件（选择器是UIImagePickerController）
```
picker.showsCameraControls = NO;
```
使用UIImagePickerController中的takePicture

[picker takePicture];

旁注，因为它确实让我误解了几分钟，takePicture方法也驳回了这个观点。

此处还发布了更完整的答案Other Stack answer

如何从相机和相机拍照通过编程方式保存在照片库中？

4 个答案: