用UIImagePickerViewController自定义相机界面

1.设定imagePacker参数

// Transform values for full screen support:
#define CAMERA_TRANSFORM_X 1
// this works for iOS 4.x
#define CAMERA_TRANSFORM_Y 1.24299
 
-(void)viewWillAppear:(BOOL)animated{
    
    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.delegate = self;
 
imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePickerController.showsCameraControls = NO;
imagePickerController.navigationBarHidden = YES;
imagePickerController.wantsFullScreenLayout = YES;
imagePickerController.cameraViewTransform =CGAffineTransformScale(imagePickerController.cameraViewTransform, CAMERA_TRANSFORM_X,CAMERA_TRANSFORM_Y);
    cameraViewController = [[CameraOverlayViewControlleralloc]initWithNibName:@"CameraOverlayViewController" bundle:nil];
    imagePickerController.cameraOverlayView = cameraViewController.view;
    cameraViewController.pickerController = imagePickerController;
    [self presentModalViewController:imagePickerController animated:NO];
release];
}
 
2.代理方法
 
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary
    [picker dismissModalViewControllerAnimated:NO];
    UIImage* image = [info valueForKey:UIImagePickerControllerOriginalImage];
    BeautifyPhotoViewController* beautifyPhotoViewController = [[BeautifyPhotoViewControlleralloc]initWithNibName:@"BeautifyPhotoViewController" bundle:nil];
photoImage
    [self.navigationController pushViewController:beautifyPhotoViewController animated:YES];
release];
}
 
3.overlayView对应的controller
 
#import
 
@interface CameraOverlayViewController ()
 
@end
 
@implementation
 
@synthesize
@synthesize
@synthesize
@synthesize
@synthesize
@synthesize photoBtn;
 
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
       
        [self getAllPhotoImages];
    }
    return self;
}
 
- (void)viewDidLoad
{
    [super viewDidLoad];
    isOneToOne = YES;
    imageArray = [[NSMutableArray alloc]init];
    shadowView = [[ShadowView alloc]initWithRect:CGRectMake(0, 80, 320, 320)];
    [self.view addSubview:shadowView];
    [self.view sendSubviewToBack:shadowView];
    [shadowView release];
   
}
 
- (void)viewDidUnload
{
    [super viewDidUnload];
   
   
}
//闪光灯
-(IBAction)cameraTorchOn:(id)sender{
    if (pickerController.cameraFlashMode ==UIImagePickerControllerCameraFlashModeAuto) {
        pickerController.cameraFlashMode = UIImagePickerControllerCameraFlashModeOn;
else
        pickerController.cameraFlashMode = UIImagePickerControllerCameraFlashModeOff;
    }
}
 
//前后摄像头
- (IBAction)swapFrontAndBackCameras:(id)sender {
    if (pickerController.cameraDevice ==UIImagePickerControllerCameraDeviceRear ) {
        pickerController.cameraDevice = UIImagePickerControllerCameraDeviceFront;
else
        pickerController.cameraDevice = UIImagePickerControllerCameraDeviceRear;
    }
}
//改变拍摄比例
-(IBAction)changeCameraScale:(id)sender{
    if (isOneToOne) {
        [shadowView changeRect:CGRectMake(0, 0, 320, 428)];
        [cameraScaleBtn setImage:[UIImage imageNamed:@"font_-scale43.png"]forState:UIControlStateNormal];
        titleImageView.alpha = 0.2;
        flashModeBtn.alpha = 0.5;
        deviceModeBtn.alpha = 0.5;
isOneToOne = NO;
else
        [shadowView changeRect:CGRectMake(0, 80, 320, 320)];
        [cameraScaleBtn setImage:[UIImage imageNamed:@"font_-scale11.png"]forState:UIControlStateNormal];
        titleImageView.alpha = 1;
        flashModeBtn.alpha = 1;
        deviceModeBtn.alpha = 1;
isOneToOne = YES;  
    }
}
 
- (IBAction)enterPhotoAlbum:(id)sender {
    PhotoAlbumViewController* photoAlbumViewController = [[PhotoAlbumViewControlleralloc]initWithNibName:@"PhotoAlbumViewController" bundle:nil];
self presentModalViewController:photoAlbumViewController animated:YES];
    
}
 
//拍摄照片
-(IBAction)takeThePic:(id)sender{
    [pickerController takePicture];
}
 
-(IBAction)backToHome:(id)sender{
    [pickerController dismissModalViewControllerAnimated:NO];
    [[NSNotificationCenter defaultCenter] postNotificationName:@"backToHome" object:nil];
}
 
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
 
- (void)dealloc
{
    [cameraScaleBtn release];
    [flashModeBtn release];
    [deviceModeBtn release];
    [titleImageView release];
super dealloc];
}
 
-(void)getAllPhotoImages{
    ALAssetsLibraryAccessFailureBlock failureblock = ^(NSError *myerror){
        
        NSLog(@"error occour =%@", [myerror localizedDescription]);
    };
    ALAssetsGroupEnumerationResultsBlock groupEnumerAtion = ^(ALAsset *result, NSUInteger index,BOOL *stop){
if (result!=NULL) {
            if ([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypePhoto]) {
imageArray addObject:result];
UIImage *img=[UIImage imageWithCGImage:result.thumbnail];
                [photoBtn setImage:img forState:UIControlStateNormal];
            }
        }
    };
   
    
ALAssetsGroup* group, BOOL* stop){
        
if (group == nil) {
return;
        }
if (group!=nil) {
enumerateAssetsUsingBlock:groupEnumerAtion];
        }
    };
    ALAssetsLibrary* library = [[ALAssetsLibrary alloc] init];
    
    [library enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos
     
usingBlock:libraryGroupsEnumeration 
     
failureBlock:failureblock];
release];
}
@end