iPhone

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MultiPlatform

CameraViewController.m：源码内容

							//
//  CameraAppDelegate.m
//  Camera
//
//  Created by Jeff LaMarche on 8/8/08.
//  Copyright __MyCompanyName__ 2008. All rights reserved.
//
#import "CameraViewController.h"
@implementation CameraViewController
@synthesize imageView;
@synthesize takePictureButton;
@synthesize selectFromCameraRollButton;
- (void)viewDidLoad {
	if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
		takePictureButton.hidden = YES;
		selectFromCameraRollButton.hidden = YES;
	}
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
	// Return YES for supported orientations
	return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (void)didReceiveMemoryWarning {
	[super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview
	// Release anything that's not essential, such as cached data
}
- (void)dealloc {
	[imageView release];
	[takePictureButton release];
	[selectFromCameraRollButton release];
	[super dealloc];
}
#pragma mark -
- (IBAction)getCameraPicture:(id)sender {
	UIImagePickerController *picker = [[UIImagePickerController alloc] init];
	picker.delegate = self;
	picker.sourceType = (sender == takePictureButton) ? UIImagePickerControllerSourceTypeCamera : UIImagePickerControllerSourceTypeSavedPhotosAlbum;
	picker.allowsImageEditing = YES;
	[self presentModalViewController:picker animated:YES];
	[picker release];
	
}
- (IBAction)selectExistingPicture {
	if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
		UIImagePickerController *picker = [[UIImagePickerController alloc] init];
		picker.delegate = self;
		picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
		[self presentModalViewController:picker animated:YES];
		[picker release];
	}
	else {
		UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error accessing photo library" message:@"Device does not support a photo library" delegate:nil cancelButtonTitle:@"Drat!" otherButtonTitles:nil];
		[alert show];
		[alert release];
	}
}
#pragma mark  -
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo {
	imageView.image = image;
	[picker dismissModalViewControllerAnimated:YES];
	
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
	
	[picker dismissModalViewControllerAnimated:YES];
}
@end

						