IOS相机管理

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相机简介

相机是移动设备的共同特点之一，我们能够使用相机拍摄图片，并在应用程序里调用它，而且相机的使用很简单。

实例步骤

1、创建一个简单的View based application

2、在ViewController.xib中添加一个button （按钮），并为该按钮创建IBAction

3、添加一个 image view （图像视图），并创建一个名为imageView的IBOutlet

4、ViewController.h文件代码如下所示：

#import @interface ViewController : UIViewController{ 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

输出

运行该应用程序并单击显示相机按钮时，我们就会获得下面的输出

只要拍照之后，就可以通过移动和缩放对图片进行编辑，如下所示。