如何通过单击iphone sdk标签栏中的标签打开相机？

Question

如何通过单击标签栏应用程序中的标签打开相机，我还想自定义该相机控制器？我见过很多这样的应用程序，它们还有额外的功能，比如instagram这也像这样使用pinterest这是另一个picplz我已经用谷歌搜索了一些链接，但我没有得到完美的结果尝试通过- (void)viewWillAppear:(BOOL)animated 打开摄像头，但它无法完美运行，任何人都可以指导我创建像上面某些应用程序那样的摄像头视图吗？

我见过这个苹果example. 用于自定义相机视图我见过this.

嘿，有人有答案吗？

Answer 1

试试这个代码 sn-p。

UIImagePickerController *picker = [[UIImagePickerController alloc] init]; 
picker.delegate = self; 
picker.allowsEditing = YES;
if (([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])) 
{
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;
    [self presentModalViewController: picker animated:YES]; 
}
else
{
        // Put alert no camer found
}
[picker release];

Answer 2

- (IBAction)buttonTap:(id)sender
{
    UIActionSheet * theActionSheet;

    if(![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
    {
        theActionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:NSLocalizedString(@"Cancel", nil) destructiveButtonTitle:NSLocalizedString(@"Choose existing photo", nil) otherButtonTitles:nil, nil, nil];
        self.actionSheet = theActionSheet;
    }
    else
     {
         theActionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:NSLocalizedString(@"Cancel", nil) destructiveButtonTitle:NSLocalizedString(@"Take photo", nil) otherButtonTitles:NSLocalizedString(@"Choose existing photo", nil), nil, nil];
         self.actionSheet = theActionSheet;
     }
     self.actionSheet.tag = 100;
     self.actionSheet.actionSheetStyle = UIActionSheetStyleDefault;
     [self.actionSheet showInView:self.view.window];    // show from our table view (pops up in the middle of the table)
     [theActionSheet release];      
}