求教各位高手,这段代码是做什么用的,拜托大概加点注释,
比如是做什么用的,用什么类什么方法,选到的文件保存在哪里 这样的,小弟拜谢了!!
#import "CameraViewController.h"
@implementation CameraViewController
@synthesize imageView;
@synthesize takePictureButton;
@synthesize selectFromCameraRollButton;
- (void)viewDidLoad {
if (![UIImagePickerController isSourceTypeAvailable:
UIImagePickerControllerSourceTypeCamera]) {
takePictureButton.hidden = YES;
selectFromCameraRollButton.hidden = YES;
}
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.imageView = nil;
self.takePictureButton = nil;
self.selectFromCameraRollButton = nil;
[super viewDidUnload];
}
- (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.allowsImageEditing = YES;
picker.sourceType = (sender == takePictureButton) ?
UIImagePickerControllerSourceTypeCamera :
UIImagePickerControllerSourceTypeSavedPhotosAlbum;
[self presentModalViewController:picker animated:YES];
[picker release];
}
- (IBAction)selectExistingPicture {
if ([UIImagePickerController isSourceTypeAvailable:
UIImagePickerControllerSourceTypePhotoLibrary]) {
UIImagePickerController *picker =
[[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsImageEditing = YES;
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
------解决方案--------------------
建议楼主直接编译运行，然后哪行不明白注释哪行，或者单步执行~~
这样必看注释有效果而且记忆深刻
------解决方案--------------------
不懂的地方，google下吧