Implement UIPickerView horizontally? - iphone

Question

The default scroll setting for a UIPickerView is set to vertical. Is it possible to implement a UIPickerView horizontally?
If so, could you please show me a sample or direct me where to helpful documentation?

Answer 1

you can use CPPickerView .. A custom, configurable, horizontal version of UIPickerView (based on the spinning-wheel or slot-machine metaphor), with an included table cell implementation. Originally intended for condensing the space/rows needed for a multi-option setting.

Answer 2

IN .h File
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController <UIPickerViewDelegate> {
IBOutlet UIPickerView *pickerView;
NSMutableArray *itemArray;
IBOutlet UILabel *myLabel;
}
#property (nonatomic, retain) UIPickerView *pickerView;
#property (nonatomic, retain) UILabel *myLabel;
#end
IN .XIB File
drag and drop UIPickerView And One UILable
Also connect BOTH the “delegate” and “Referencing Outlet” to the FileOwner.
IN .M File
#import "ViewController.h"
#implementation ViewController
#synthesize pickerView, myLabel;
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.pickerView.delegate = self;
self.pickerView.showsSelectionIndicator =YES;
self.pickerView.backgroundColor = [UIColor blackColor];
CGAffineTransform rotate = CGAffineTransformMakeRotation(M_PI_2);
rotate = CGAffineTransformScale(rotate, 0.1, 0.8);
[self.pickerView setTransform:rotate];
self.pickerView.center = CGPointMake(160,75);
UILabel *theview[20];
CGAffineTransform rotateItem = CGAffineTransformMakeRotation(-M_PI_2);
rotateItem = CGAffineTransformScale(rotateItem, 1, 10);
for (int i=0;i<20;i++) {
theview[i] = [[UILabel alloc] init];
theview[i].text = [NSString stringWithFormat:#"%d",i];
theview[i].textColor = [UIColor blackColor];
theview[i].frame = CGRectMake(0,0, 100, 100);
theview[i].backgroundColor = [UIColor clearColor];
theview[i].textAlignment = NSTextAlignmentCenter; //UITextAlignmentCenter is deprecated.
theview[i].shadowColor = [UIColor whiteColor];
theview[i].shadowOffset = CGSizeMake(-1,-1);
theview[i].adjustsFontSizeToFitWidth = YES;
UIFont *myFont = [UIFont fontWithName:#"Georgia" size:15];
[theview[i] setFont:myFont];
theview[i].transform = rotateItem;
}
itemArray = [[NSMutableArray alloc] init];
for (int j=0;j<20;j++) {
[itemArray addObject:theview[j]];
}
}
#pragma mark -
#pragma mark Picker View Methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)thePickerView {
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)thePickerView numberOfRowsInComponent:(NSInteger)component {
return [itemArray count];
}
- (UIView *)pickerView:(UIPickerView *)thePickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view
{
return [itemArray objectAtIndex:row];
}
- (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
myLabel.text = [NSString stringWithFormat:#"SELECTED: %d", row+1];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
#end