StackOverflow2013

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copied!<ol> <li>Create 3 UiPickerView using Code after the Database read is done</li> <li>Set The values according to the database</li> <li>Set separate Tags (1,2,3) for each UIPicker.Then you can get it again every where. </li> <li>Set the UiPickerView delegates.</li> </ol> <p>You can check out the sample <a href="http://www.iphonesdkarticles.com/2009/01/uipickerview-creating-simple-picker.html" rel="nofollow">here</a></p> <p>Use <strong>[yourPicker selectRow:10 inComponent:0 animated:YES];</strong> to set picker selected value</p> <p><strong>Sample Code to Add UIPicker</strong> </p> <pre><code>-(void)displayPicker{ @try { UIToolbar *pickerToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 200, 44)]; pickerToolbar.barStyle = UIBarStyleBlackOpaque; [pickerToolbar sizeToFit]; NSMutableArray *barItems = [[NSMutableArray alloc] init]; UIBarButtonItem *cancelBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(pickerCancel:)]; cancelBtn.tag = 1; [barItems addObject:cancelBtn]; [cancelBtn release]; cancelBtn = nil; /* Uncomment this line to add label to Timer/Counter. NSString *popUpTitleText = [self getPopUpTitleText:@"My Text"]; UIBarButtonItem *titleBtn = [[UIBarButtonItem alloc] initWithTitle:popUpTitleText style:UIBarButtonItemStylePlain target:nil action:nil]; [barItems addObject:titleBtn]; [titleBtn release]; titleBtn = nil; */ UIBarButtonItem *flexItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil]; flexItem.width = 64; [barItems addObject:flexItem]; [flexItem release]; flexItem = nil; UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDone:)]; doneBtn.tag = 1; [barItems addObject:doneBtn]; [doneBtn release]; doneBtn = nil; [pickerToolbar setItems:barItems animated:YES]; [barItems release]; barItems = nil; CGRect pickerFrame = CGRectMake(0, 40, 0, 216); UIPickerView *pickerView = [[UIPickerView alloc] initWithFrame:pickerFrame]; pickerView.showsSelectionIndicator = YES; pickerView.tag = 1; pickerView.dataSource = self; pickerView.delegate = self; CGRect pickerRect = pickerView.bounds; pickerView.bounds = pickerRect; UIViewController* popoverContent = [[UIViewController alloc] init]; UIView* popoverView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 344)]; popoverView.backgroundColor = [UIColor whiteColor]; pickerView.frame = CGRectMake(0, 44, 200, 216); [pickerView selectRow:1 inComponent:0 animated:YES]; //set your selected (Database) value here. [popoverView addSubview:pickerToolbar]; [popoverView addSubview:pickerView]; popoverContent.view = popoverView; //resize the popover view shown //in the current view to the view's size popoverContent.contentSizeForViewInPopover = CGSizeMake(200, 244); //create a popover controller popoverController.delegate = nil; if (popoverController.popoverVisible == YES) { [popoverController dismissPopoverAnimated:YES]; } [popoverController release]; popoverController = nil; popoverController = [[UIPopoverController alloc] initWithContentViewController:popoverContent]; CGRect popoverRect = [self.view convertRect:yourFrame(CGrect) fromView:[yourView superview]]; popoverRect.origin.y = popoverRect.origin.y + 15; popoverController.delegate = self; popoverRect.size.width = MIN(popoverRect.size.width, 100) ; popoverRect.origin.x = float yourXvalue; [popoverController presentPopoverFromRect:popoverRect inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES]; //release the popover content [popoverView release]; [popoverContent release]; [pickerToolbar release]; [pickerView release]; popoverView = nil; popoverContent = nil; pickerToolbar = nil; pickerView = nil; } @catch (NSException * ex) { NSLog(@"Exception in YourClass Method: displayPicker() Name:%@ Reason:%@",[ex name],[ex reason]); } } </code></pre>

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