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DataPickerViewController.m
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DataPickerViewController.m
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/* * Copyright 2014-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#import "DataPickerViewController.h"
@interface DataPickerViewController ()
@property UILabel *pickerDisplay;
@property NSArray *pickerData;
@property UIPickerView *picker;
@end
static NSString * const PICKER_DEFAULT_DISPLAY = @"Submit";
static NSInteger const PICKER_COMPONENT_NUMBER = 1;
/**
* The data picker controller
*/
@implementation DataPickerViewController
- (void)viewDidLoad {
[super viewDidLoad];
_pickerDisplay = [[UILabel alloc] initWithFrame:
CGRectMake(0, [self getTopPositionRounded] + [self getSmallWidthPadding], [self getWidthMinusSmallPadding], 0)];
_pickerData = [[NSArray alloc] initWithObjects:@"Selection 1",@"Selection 2",@"Selection 3",@"Selection 4",@"Selection 5", nil];
_pickerDisplay.text = PICKER_DEFAULT_DISPLAY;
_pickerDisplay.font = [UIFont largeFont];
[_pickerDisplay sizeToFit];
_pickerDisplay.textAlignment = NSTextAlignmentCenter;
[self centerViewByWidth:_pickerDisplay];
_picker = [[UIPickerView alloc] initWithFrame:CGRectZero];
[_picker sizeToFit];
[self putView:_picker belowView:_pickerDisplay withPadding:self.view.frame.size.height/20];
_picker.dataSource = self;
_picker.delegate = self;
[self.view addSubview:_picker];
[self.view addSubview:_pickerDisplay];
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
return PICKER_COMPONENT_NUMBER;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{
return (NSInteger)_pickerData.count;
}
-(NSString*)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{
return [_pickerData objectAtIndex:row];
}
/**
* Event when the data picker row is selected
*
* Sets the display to the row's text
*
* @param pickerView the picker view
* @param row the row selected
* @param component the component
*/
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{
_pickerDisplay.text = [_pickerData objectAtIndex:row];
[_pickerDisplay sizeToFit];
[self centerViewByWidth:_pickerDisplay];
}
@end