HorizontalPicker

Introduction

LAUPickerView is an horizontal spinning-wheel picker control view for iOS.

It is similar to UIPickerView, but the user interface provided consists of columns instead of rows. It also follows the same semantics used for the data source and delegate methods. Please read the Overview section for more details about usage.

Requirements

• iOS 9.0 or later
• Suported devices: iPhone/iPad (*)

How to use LAUPickerView in your project

Swift Package Manager

TODO

1. Use LAUPickerView in your project:

import LAUPickerView

Overview Tutorial

1. Add the LAUPickerView to an existing UIView (ie. inside UIViewController's viewDidLoad method).

LAUPickerView * pickerView = [[LAUPickerView alloc] initWithFrame:self.view.frame];
pickerView.dataSource = self; // LAUPickerViewDataSource protocol
pickerView.delegate = self;   // LAUPickerViewDelegate protocol
[self.view addSubview:pickerView];

2. Implement the LAUPickerViewDataSource protocol:

- (NSInteger)numberOfComponentsInPickerView:(LAUPickerView *)pickerView
{
    // return the number of components needed
}

- (NSInteger)pickerView:(LAUPickerView *)pickerView numberOfColumnsInComponent:(NSInteger)component
{
    // return the number of columns for each component
}

3. Implement the LAUPickerViewDelegate protocol:

- (NSString *)pickerView:(LAUPickerView *)pickerView titleForColumn:(NSInteger)column forComponent:(NSInteger)component
{
    // return the title for the specific column-component pair
}

- (void)pickerView:(LAUPickerView *)pickerView didSelectColumn:(NSInteger)column inComponent:(NSInteger)component
{
    // called when a new, different column is selected following a user touch-based input
}

4. Additionally you can change the selected column position to left, center or right.

pickerView.selectionAlignment = LAPickerSelectionAlignmentLeft; // Change selected column position to left

Examples

LAUPickerViewOverview

The LAUPickerViewOverview is a single-view example showing the LAUPickerView and UIPickerView side-by-side. The selection is linked, so changing the selected column in the LAUPickerView will trigger the UIPickerView to change to the corresponding row.

Roadmap

• Improve layout and autoresize constraints
• Fix click sound loudness
• Fix click sound while scrolling
• Improve selected to unselected state animation
• Implement 3D transform similar to UIPickerView