IOS相机管理

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 <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