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                # IOS相機管理 ## 相機簡介 相機是移動設備的共同特點之一,我們能夠使用相機拍攝圖片,并在應用程序里調用它,而且相機的使用很簡單。 ### 實例步驟 1、創建一個簡單的View based application 2、在ViewController.xib中添加一個button (按鈕),并為該按鈕創建IBAction 3、添加一個 image view (圖像視圖),并創建一個名為imageView的IBOutlet 4、ViewController.h文件代碼如下所示: ``` #import <UIKit/UIKit.h> @interface ViewController : UIViewController<UIImagePickerControllerDelegate> { UIImagePickerController *imagePicker; IBOutlet UIImageView *imageView; } - (IBAction)showCamera:(id)sender; @end ``` 5、修改ViewController.m,如下所示: ``` #import "ViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (IBAction)showCamera:(id)sender { imagePicker.allowsEditing = YES; if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]) { imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; } else{ imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; } [self presentModalViewController:imagePicker animated:YES]; } -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage]; if (image == nil) { image = [info objectForKey:UIImagePickerControllerOriginalImage]; } imageView.image = image; } -(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{ [self dismissModalViewControllerAnimated:YES]; } @end ``` ### 輸出 運行該應用程序并單擊顯示相機按鈕時,我們就會獲得下面的輸出 ![camera_Output1](https://box.kancloud.cn/2015-12-13_566ce8a25de77.jpg) 只要拍照之后,就可以通過移動和縮放對圖片進行編輯,如下所示。 ![camera_Output2](https://box.kancloud.cn/2015-12-13_566ce8a26a2a5.jpg)
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