首先需要一個Nav，在FirstAppAppDelegate.m里添加：

-?(BOOL)application:(UIApplication?*)application?didFinishLaunchingWithOptions:(NSDictionary?*)launchOptions
{
????//...
????ImageViewController?*imgTab?=?[[ImageViewController?alloc]?init];
????UINavigationController?*navImg?=?[[UINavigationController?alloc]?initWithRootViewController:imgTab];//添加
????
????NSArray?*tabArray?=?[[NSArray?alloc]?initWithObjects:navImg,?tableTab,?btnTab,?textTab,?navigation,?nil];//修改
????[navImg?release];//添加
????//...
}

進入ImageViewController.h文件，添加委托，并創建imageView變量：

@interface?ImageViewController?:?UIViewController<UIImagePickerControllerDelegate,?UINavigationControllerDelegate>{
????UIImageView?*imageView;
}//UIImagePickerControllerDelegate繼承至UINavigationControllerDelegate

ImageViewController.m的- viewDidLoad略做修改，并添加相機按鈕：//直接使用UIBarButtonSystemItemCamera了 -?(void)viewDidLoad
{
????imageView?=?[[UIImageView?alloc]?initWithFrame:CGRectMake(50.0,?50.0,?48.0,?48.0)];
????imageView.image?=?[UIImage?imageNamed:@"China.gif"];
????imageView.contentMode?=?UIViewContentModeScaleAspectFit;
????[self.view?addSubview:imageView];
????[imageView?release];
????????
????UIBarButtonItem?*imgRightBtn?=?[[UIBarButtonItem?alloc]?initWithBarButtonSystemItem:UIBarButtonSystemItemCamera?target:self?action:@selector(openCamera:)];
????[[self?navigationItem]?setRightBarButtonItem:imgRightBtn];
}

實現按鈕事件：

-?(void)openCamera:(id)sender
{
????UIImagePickerController?*imagePicker?=?[[UIImagePickerController?alloc]?init];//initWithRootViewController:
????if?([UIImagePickerController?isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])?{
????????[imagePicker?setSourceType:UIImagePickerControllerSourceTypeCamera];
????}else?{
????????[imagePicker?setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
????}
????[imagePicker?setDelegate:self];
????[self?presentModalViewController:imagePicker?animated:YES];
????[imagePicker?release];
}

?此處代碼：

? ?? isSourceTypeAvailable判定此設備是否支持相機，不然從圖片目錄獲取圖片。

? ?? UIImagePickerController實例以模態展示，需要presentModalViewController它。

? ?? souceType分別代表：Camera（打開相機），PhotoLibrary（打開相冊），SavedPhotoAlbums（最近拍攝）

?

圖片選擇完成，則觸發委托事件：

-?(void)imagePickerController:(UIImagePickerController?*)picker?didFinishPickingMediaWithInfo:(NSDictionary?*)info
{
????UIImage?*image?=?[info?objectForKey:UIImagePickerControllerOriginalImage];
????[imageView?setImage:image];
????
????[self?dismissModalViewControllerAnimated:YES];
}

?如果關閉了界面，則取消操作，觸發：

imagePickerControllerDidCancel:

可以工作了，此處的一個問題就是當拍攝圖片過大，內存警告回收資源，圖片則不會顯示。通過保存圖片等操作解決，后面說。

?

求指點！

轉載于:https://www.cnblogs.com/maxfong/archive/2012/05/04/2482847.html

總結

以上是生活随笔為你收集整理的FirstApp，iphone开发学习总结7，相机的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。