打开相机时隐藏标签栏

Question

我正在开发基于标签栏的应用程序的每个人。我在屏幕上打开相机以便拍照。但是当相机打开时，我看不到底部的拍照按钮。我的猜测是按钮隐藏在标签栏后面。如果我是对的，那么我需要删除相机屏幕上的标签栏。谁能告诉我如何删除相机屏幕上的标签栏？

我正在使用它来显示相机：

[self presentModalViewController:imagePickerController animated:YES];

我的应用是基于标签栏的，此代码是在与标签栏项目关联的视图控制器中编写的。

if (!imagePickerController) {
imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.delegate = self;

// If our device has a camera, we want to take a picture, otherwise, we just pick from
// photo library
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
    [imagePickerController setSourceType:UIImagePickerControllerSourceTypeCamera];
}else
{
    [imagePickerController setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Attention" message:@"Your device does not support taking photos from camera. Redirecting you to Photos Library instead." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alert show];
}

// image picker needs a delegate so we can respond to its messages
imagePickerController.delegate = self;
}
// Place image picker on the screen
[self presentModalViewController:imagePickerController animated:YES];

Answer 1

从标签栏控制器而不是它包含的视图控制器中显示图像选择器控制器。换句话说：

[self.tabBarController presentModalViewController:imagePickerController animated:YES];

Answer 2

试试这个：

[[[[UIApplication sharedApplication].delegate window] rootViewController] presentModalViewController:picker animated:YES];

Answer 3

/*
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization.
    }
    return self;
}
*/


// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];
    imagePickerController.delegate = self;
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:@"Please choose the category you want your picture to be uploaded in." delegate:self cancelButtonTitle:@"General" otherButtonTitles:@"Fresh Cuts", nil];
    [alert show];
}


/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations.
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Release any cached data, images, etc. that aren't in use.
}

- (void)alertView:(UIAlertView *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
    // the user clicked one of the OK/Cancel buttons
    if (buttonIndex == 0)   //general
    {
        selected_category = 0;
    }
    else                    // fresh cuts
    {
        selected_category = 1;
    }
}


-(IBAction) uploadFromCameraButtonPressed{
    if (!imagePickerController) {
        imagePickerController = [[UIImagePickerController alloc] init];
        imagePickerController.delegate = self;

        // If our device has a camera, we want to take a picture, otherwise, we just pick from
        // photo library
        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
        {
            [imagePickerController setSourceType:UIImagePickerControllerSourceTypeCamera];
        }else
        {
            [imagePickerController setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Attention" message:@"Your device does not support taking photos from camera. Redirecting you to Photos Library instead." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
            [alert show];
        }

        // image picker needs a delegate so we can respond to its messages
        imagePickerController.delegate = self;
    }

    [self presentModalViewController:imagePickerController animated:NO];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
    NSData *imageData = UIImagePNGRepresentation(image);
    NSString *userName = [[NSUserDefaults standardUserDefaults] objectForKey:@"user_email"];

    NSMutableString *imageName = [[[NSMutableString alloc] initWithCapacity:0] autorelease];

    CFUUIDRef theUUID = CFUUIDCreate(kCFAllocatorDefault);
    if (theUUID) {
        [imageName appendString:NSMakeCollectable(CFUUIDCreateString(kCFAllocatorDefault, theUUID))];
        CFRelease(theUUID);
    }
    [imageName appendString:@".png"];

    StatusBO *statusObj = [PhotoBO uploadImageFile:userName imageData:imageData file_name:imageName c_id:self.selected_category];

    if(statusObj.errorOccured == YES){
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:statusObj.errorTitle message:statusObj.errorMessage delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alertView show];
    }else{
    //  UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:statusObj.errorTitle message:statusObj.errorMessage delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
        //[alertView show];
        [self dismissModalViewControllerAnimated:NO];
    }
}


-(IBAction) uploadFromFileButtonPressed{
    imagePickerController = [[UIImagePickerController alloc] init];
    imagePickerController.delegate = self;
    [imagePickerController setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
    [self presentModalViewController:imagePickerController animated:YES];
}


- (void)viewDidUnload {
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

-(IBAction) backButtonPressed{
    [self.view removeFromSuperview];
}

-(IBAction) takePhotoFromCamra{

}


- (void)dealloc {
    [super dealloc];
}


@end

Answer 4

将模态视图的帧大小设置为完整，以便覆盖整个屏幕 - 尺寸 ~ (0,0,320,460)

imagePicker.view.frame = CGRectMake (0,0,320,460);