Added example code to handle selection events from a popover view and

to redirect this events to the originating view controller.

PopoverView/Classes/MainViewController.h

@@ -9,7 +9,7 @@
 #import <UIKit/UIKit.h>
 #import "ViewWithPickerController.h"
 
-@interface MainViewController : UIViewController {
+@interface MainViewController : UIViewController <PopoverPickerDelegate> {
 
 	UIPopoverController *popoverController;
 

PopoverView/Classes/MainViewController.m

@@ -108,6 +108,9 @@ - (void) showPickerPopupAction:(id) sender {
 	//set popover content size
 	viewWithPickerController.contentSizeForViewInPopover = 
 			CGSizeMake(viewWithPickerController.view.frame.size.width, viewWithPickerController.view.frame.size.height);
+
+	//set delegate 
+	viewWithPickerController.delegate = self;
 
 
 	//create a popover controller
@@ -123,6 +126,20 @@ - (void) showPickerPopupAction:(id) sender {
 										  animated:YES];
 }
 
+// Method gets called whenever the selection of an element
+// within the picker view in the popover view occurs.
+- (void) viewWithPickerController:(ViewWithPickerController*) viewWithPickerController didSelectValue:(NSString*) value
+{
+	UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Selection" 
+													message:[NSString stringWithFormat:@"You selected %@!", value]
+												   delegate:nil 
+										  cancelButtonTitle:@"Dismiss" 
+										  otherButtonTitles:nil];
+
+	[alert show];
+	[alert release];
+}
+
 
 // Override to allow orientations other than the default portrait orientation.
 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

PopoverView/Classes/ViewWithPickerController.h

@@ -8,17 +8,34 @@
 
 #import <UIKit/UIKit.h>
 
+//need to declare class
+@class ViewWithPickerController;
+
+
+//A simple protocol to implement delegation
+//for value selection within the picker view
+@protocol PopoverPickerDelegate
+
+@required
+- (void) viewWithPickerController:(ViewWithPickerController*) viewWithPickerController didSelectValue:(NSString*) value;
+
+@end
+
 
 @interface ViewWithPickerController : UIViewController <UIPickerViewDelegate, UIPickerViewDataSource> {
 
 	IBOutlet UIPickerView *pickerView;
 	IBOutlet UILabel *label;
 
+	id<PopoverPickerDelegate> delegate;
+
 }
 
 @property(nonatomic, retain) IBOutlet UIPickerView *pickerView;
 @property(nonatomic, retain) IBOutlet UILabel *label;
 
+@property(nonatomic, assign) id<PopoverPickerDelegate> delegate;
+
 
 
 @end

PopoverView/Classes/ViewWithPickerController.m

@@ -11,7 +11,7 @@
 
 @implementation ViewWithPickerController
 
-@synthesize pickerView, label;
+@synthesize pickerView, label, delegate;
 
 
 #pragma mark -
@@ -38,7 +38,12 @@ - (NSString *)pickerView:(UIPickerView *)picker titleForRow:(NSInteger)row forCo
 
 //handle selection of a row
 - (void)pickerView:(UIPickerView *)picker didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
-	self.label.text = [pickerView.delegate pickerView:picker titleForRow:row forComponent:component];
+	NSString *value = [pickerView.delegate pickerView:picker titleForRow:row forComponent:component];
+	self.label.text = value;
+
+	//notify the delegate about selecting a value
+	if(delegate != nil)
+		[delegate viewWithPickerController:self didSelectValue:value];
 }
 
 

PopoverView/PopoverView.xcodeproj/project.pbxproj

@@ -145,7 +145,14 @@
 			isa = PBXProject;
 			buildConfigurationList = C01FCF4E08A954540054247B /* Build configuration list for PBXProject "PopoverView" */;
 			compatibilityVersion = "Xcode 3.1";
+			developmentRegion = English;
 			hasScannedForEncodings = 1;
+			knownRegions = (
+				English,
+				Japanese,
+				French,
+				German,
+			);
 			mainGroup = 29B97314FDCFA39411CA2CEA /* CustomTemplate */;
 			projectDirPath = "";
 			projectRoot = "";