iOS－UIActionSheet的簡單使用和調用系統相簿

實現UIActionSheetDelegate

UIActionSheet *menu = [[UIActionSheet
alloc]

                          
initWithTitle: @""

                          
delegate:self

                          
cancelButtonTitle:@"Cancel"

                          
destructiveButtonTitle:nil

                          
otherButtonTitles:@"圖庫相簿",@"拍照",
nil];

    [menu
showInView:self.view];

# pragma mark UIActionSheet method

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

{

   
if (buttonIndex==0) {

        [self
photoalbumr];//圖庫相簿

    

    }else
if(buttonIndex==1){

         [self
photocamera];//拍照

    }else
if(buttonIndex==2){

    

    }

    

    [actionSheet
release];

}

調用系統的相簿

實現UIImagePickerControllerDelegate

-(void)photoalbumr{

   
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];

        

    }

}

-(void)photocamera{

   
if ([UIImagePickerController
isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

       
UIImagePickerController* imagepicker = [[UIImagePickerController
alloc]
init];

        imagepicker.delegate =
self;

        imagepicker.sourceType =
UIImagePickerControllerSourceTypeCamera;

        imagepicker.modalTransitionStyle =
UIModalTransitionStyleCoverVertical;

        imagepicker.allowsEditing =
YES;

        [self
presentModalViewController:imagepicker
animated:YES];

    }

   
else {

       
UIAlertView *alert = [[UIAlertView
alloc] 

                             
initWithTitle:@"Sorry" 

                             
message:@"裝置不支援拍照功能" 

                             
delegate:nil 

                             
cancelButtonTitle:@"確定" 

                             
otherButtonTitles:nil];

        [alert
show];

        [alert
release];

        

    }

  }

#pragma mark UIImagePicker method

- (void)imagePickerController:(UIImagePickerController *)picker 

        didFinishPickingImage:(UIImage *)image 

                  editingInfo:(NSDictionary *)editingInfo

{  

 
/*將圖片儲存到document下

   
NSArray *paths =
NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,    
NSUserDomainMask, YES);

   
NSString *documentsDirectory = [paths objectAtIndex:0];

   
NSString *savedImagePath = [documentsDirectory
stringByAppendingPathComponent:@"savedImage.png"];

   
NSData *imageData = UIImagePNGRepresentation(image);

    [imageData
writeToFile:savedImagePath atomically:NO];   

     
_imgName=@"savedImage.png";

   
self._imgFilePath=documentsDirectory;

    */

  

    [addPhoto
setBackgroundImage:image forState:UIControlStateNormal];

   

     [picker
dismissModalViewControllerAnimated:YES];

}

// 完成選取

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

{

    [picker
dismissModalViewControllerAnimated:YES];

}