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
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。
