//  Created by 张茫原 on 13-1-23. //  Copyright (c) 2013年 张茫原. All rights reserved. //   #import <UIKit/UIKit.h> //调用闪光灯调用框架 #import <AVFoundation/AVFoundation.h>   @interface CameraViewController : UIViewController<UINavigationControllerDelegate, UIImagePickerControllerDelegate> {     AVCaptureSession * _AVSession;//调用闪光灯的时候创建的类 }   @property(nonatomic,retain)AVCaptureSession * AVSession;   @end

//打开相机 -(void)addCarema {     //判断是否可以打开相机，模拟器此功能无法使用     if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {                  UIImagePickerController * picker = [[UIImagePickerController alloc]init];         picker.delegate = self;         picker.allowsEditing = YES;  //是否可编辑         //摄像头         picker.sourceType = UIImagePickerControllerSourceTypeCamera;         [self presentModalViewController:picker animated:YES];         [picker release];     }else{         //如果没有提示用户         UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"你没有摄像头" delegate:nil cancelButtonTitle:@"Drat!" otherButtonTitles:nil];         [alert show];     } }

//拍摄完成后要执行的方法 -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {     //得到图片     UIImage * image = [info objectForKey:UIImagePickerControllerOriginalImage];     //图片存入相册     UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);     [self dismissModalViewControllerAnimated:YES]; } //点击Cancel按钮后执行方法 -(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {     [self dismissModalViewControllerAnimated:YES]; }

-(void)openPicLibrary {     //相册是可以用模拟器打开的     if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {         UIImagePickerController * picker = [[UIImagePickerController alloc]init];         picker.delegate = self;         picker.allowsEditing = YES;//是否可以编辑         //打开相册选择照片         picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;         [self presentModalViewController:picker  animated:YES];         [picker release];     }else{         UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"你没有摄像头" delegate:nil cancelButtonTitle:@"Drat!" otherButtonTitles:nil];         [alert show];     } } //选中图片进入的代理方法 -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo {     [self dismissModalViewControllerAnimated:YES]; }

-(void)openFlashlight {     AVCaptureDevice * device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];     if (device.torchMode == AVCaptureTorchModeOff) {         //Create an AV session         AVCaptureSession * session = [[AVCaptureSession alloc]init];         // Create device input and add to current session         AVCaptureDeviceInput * input = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil];         [session addInput:input];         // Create video output and add to current session         AVCaptureVideoDataOutput * output = [[AVCaptureVideoDataOutput alloc]init];         [session addOutput:output];         // Start session configuration         [session beginConfiguration];         [device lockForConfiguration:nil];         // Set torch to on         [device setTorchMode:AVCaptureTorchModeOn];         [device unlockForConfiguration];         [session commitConfiguration];         // Start the session         [session startRunning];         // Keep the session around         [self setAVSession:self.AVSession];         [output release];     } } -(void)closeFlashlight {     [self.AVSession stopRunning];     [self.AVSession release]; }