/* File: ControlsViewController.m Abstract: The view controller for hosting the UIControls features of this sample. Version: 2.6 Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc. ("Apple") in consideration of your agreement to the following terms, and your use, installation, modification or redistribution of this Apple software constitutes acceptance of these terms. If you do not agree with these terms, please do not use, install, modify or redistribute this Apple software. 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Except as expressly stated in this notice, no other rights or licenses, express or implied, are granted by Apple herein, including but not limited to any patent rights that may be infringed by your derivative works or by other works in which the Apple Software may be incorporated. The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. 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All Rights Reserved. */ #import "ControlsViewController.h" #import "Constants.h" #define kSliderHeight 7.0 #define kProgressIndicatorSize 40.0 #define kUIProgressBarWidth 160.0 #define kUIProgressBarHeight 24.0 #define kViewTag 1 // for tagging our embedded controls for removal at cell recycle time static NSString *kSectionTitleKey = @"sectionTitleKey"; static NSString *kLabelKey = @"labelKey"; static NSString *kSourceKey = @"sourceKey"; static NSString *kViewKey = @"viewKey"; #pragma mark - @implementation ControlsViewController @synthesize dataSourceArray; - (void)dealloc { [switchCtl release]; [sliderCtl release]; [customSlider release]; [pageControl release]; [progressInd release]; [progressBar release]; [dataSourceArray release]; [super dealloc]; } - (void)viewDidLoad { [super viewDidLoad]; self.title = NSLocalizedString(@"ControlsTitle", @""); self.dataSourceArray = [NSArray arrayWithObjects: [NSDictionary dictionaryWithObjectsAndKeys: @"UISwitch", kSectionTitleKey, @"Standard Switch", kLabelKey, @"ControlsViewController.m:\r-(UISwitch *)switchCtl", kSourceKey, self.switchCtl, kViewKey, nil], [NSDictionary dictionaryWithObjectsAndKeys: @"UISlider", kSectionTitleKey, @"Standard Slider", kLabelKey, @"ControlsViewController.m:\r-(UISlider *)sliderCtl", kSourceKey, self.sliderCtl, kViewKey, nil], [NSDictionary dictionaryWithObjectsAndKeys: @"UISlider", kSectionTitleKey, @"Customized Slider", kLabelKey, @"ControlsViewController.m:\r-(UISlider *)customSlider", kSourceKey, self.customSlider, kViewKey, nil], [NSDictionary dictionaryWithObjectsAndKeys: @"UIPageControl", kSectionTitleKey, @"Ten Pages", kLabelKey, @"ControlsViewController.m:\r-(UIPageControl *)pageControl", kSourceKey, self.pageControl, kViewKey, nil], [NSDictionary dictionaryWithObjectsAndKeys: @"UIActivityIndicatorView", kSectionTitleKey, @"Style Gray", kLabelKey, @"ControlsViewController.m:\r-(UIActivityIndicatorView *)progressInd", kSourceKey, self.progressInd, kViewKey, nil], [NSDictionary dictionaryWithObjectsAndKeys: @"UIProgressView", kSectionTitleKey, @"Style Default", kLabelKey, @"ControlsViewController.m:\r-(UIProgressView *)progressBar", kSourceKey, self.progressBar, kViewKey, nil], nil]; } // called after the view controller's view is released and set to nil. // For example, a memory warning which causes the view to be purged. Not invoked as a result of -dealloc. // So release any properties that are loaded in viewDidLoad or can be recreated lazily. // - (void)viewDidUnload { [super viewDidUnload]; // release the controls and set them nil in case they were ever created // note: we can't use "self.xxx = nil" since they are read only properties // [switchCtl release]; switchCtl = nil; [sliderCtl release]; sliderCtl = nil; [customSlider release]; customSlider = nil; [pageControl release]; pageControl = nil; [progressInd release]; progressInd = nil; [progressBar release]; progressBar = nil; self.dataSourceArray = nil; // this will release and set to nil } #pragma mark - #pragma mark UITableViewDataSource - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return [self.dataSourceArray count]; } - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { return [[self.dataSourceArray objectAtIndex: section] valueForKey:kSectionTitleKey]; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return 2; } // to determine specific row height for each cell, override this. // In this example, each row is determined by its subviews that are embedded. // - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { return ([indexPath row] == 0) ? 50.0 : 38.0; } // to determine which UITableViewCell to be used on a given row. // - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = nil; if ([indexPath row] == 0) { static NSString *kDisplayCell_ID = @"DisplayCellID"; cell = [self.tableView dequeueReusableCellWithIdentifier:kDisplayCell_ID]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kDisplayCell_ID] autorelease]; cell.selectionStyle = UITableViewCellSelectionStyleNone; } else { // the cell is being recycled, remove old embedded controls UIView *viewToRemove = nil; viewToRemove = [cell.contentView viewWithTag:kViewTag]; if (viewToRemove) [viewToRemove removeFromSuperview]; } cell.textLabel.text = [[self.dataSourceArray objectAtIndex: indexPath.section] valueForKey:kLabelKey]; UIControl *control = [[self.dataSourceArray objectAtIndex: indexPath.section] valueForKey:kViewKey]; [cell.contentView addSubview:control]; } else { static NSString *kSourceCellID = @"SourceCellID"; cell = [self.tableView dequeueReusableCellWithIdentifier:kSourceCellID]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kSourceCellID] autorelease]; cell.selectionStyle = UITableViewCellSelectionStyleNone; cell.textLabel.opaque = NO; cell.textLabel.textAlignment = UITextAlignmentCenter; cell.textLabel.textColor = [UIColor grayColor]; cell.textLabel.numberOfLines = 2; cell.textLabel.highlightedTextColor = [UIColor blackColor]; cell.textLabel.font = [UIFont systemFontOfSize:12]; } cell.textLabel.text = [[self.dataSourceArray objectAtIndex: indexPath.section] valueForKey:kSourceKey]; } return cell; } - (void)switchAction:(id)sender { // NSLog(@"switchAction: value = %d", [sender isOn]); } - (void)pageAction:(id)sender { // NSLog(@"pageAction: current page = %d", [sender currentPage]); } #pragma mark - #pragma mark Lazy creation of controls - (UISwitch *)switchCtl { if (switchCtl == nil) { CGRect frame = CGRectMake(198.0, 12.0, 94.0, 27.0); switchCtl = [[UISwitch alloc] initWithFrame:frame]; [switchCtl addTarget:self action:@selector(switchAction:) forControlEvents:UIControlEventValueChanged]; // in case the parent view draws with a custom color or gradient, use a transparent color switchCtl.backgroundColor = [UIColor clearColor]; [switchCtl setAccessibilityLabel:NSLocalizedString(@"StandardSwitch", @"")]; switchCtl.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells } return switchCtl; } - (UISlider *)sliderCtl { if (sliderCtl == nil) { CGRect frame = CGRectMake(174.0, 12.0, 120.0, kSliderHeight); sliderCtl = [[UISlider alloc] initWithFrame:frame]; [sliderCtl addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged]; // in case the parent view draws with a custom color or gradient, use a transparent color sliderCtl.backgroundColor = [UIColor clearColor]; sliderCtl.minimumValue = 0.0; sliderCtl.maximumValue = 100.0; sliderCtl.continuous = YES; sliderCtl.value = 50.0; // Add an accessibility label that describes the slider. [sliderCtl setAccessibilityLabel:NSLocalizedString(@"StandardSlider", @"")]; sliderCtl.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells } return sliderCtl; } - (UISlider *)customSlider { if (customSlider == nil) { CGRect frame = CGRectMake(174, 12.0, 120.0, kSliderHeight); customSlider = [[UISlider alloc] initWithFrame:frame]; [customSlider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged]; // in case the parent view draws with a custom color or gradient, use a transparent color customSlider.backgroundColor = [UIColor clearColor]; UIImage *stetchLeftTrack = [[UIImage imageNamed:@"orangeslide.png"] stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0]; UIImage *stetchRightTrack = [[UIImage imageNamed:@"yellowslide.png"] stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0]; [customSlider setThumbImage: [UIImage imageNamed:@"slider_ball.png"] forState:UIControlStateNormal]; [customSlider setMinimumTrackImage:stetchLeftTrack forState:UIControlStateNormal]; [customSlider setMaximumTrackImage:stetchRightTrack forState:UIControlStateNormal]; customSlider.minimumValue = 0.0; customSlider.maximumValue = 100.0; customSlider.continuous = YES; customSlider.value = 50.0; // Add an accessibility label that describes the slider. [customSlider setAccessibilityLabel:NSLocalizedString(@"CustomSlider", @"")]; customSlider.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells } return customSlider; } - (void)sliderAction:(id)sender { } - (UIPageControl *)pageControl { if (pageControl == nil) { CGRect frame = CGRectMake(120.0, 14.0, 178.0, 20.0); pageControl = [[UIPageControl alloc] initWithFrame:frame]; [pageControl addTarget:self action:@selector(pageAction:) forControlEvents:UIControlEventTouchUpInside]; // in case the parent view draws with a custom color or gradient, use a transparent color pageControl.backgroundColor = [UIColor grayColor]; pageControl.numberOfPages = 10; // must be set or control won't draw pageControl.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells } return pageControl; } - (UIActivityIndicatorView *)progressInd { if (progressInd == nil) { CGRect frame = CGRectMake(265.0, 12.0, kProgressIndicatorSize, kProgressIndicatorSize); progressInd = [[UIActivityIndicatorView alloc] initWithFrame:frame]; [progressInd startAnimating]; progressInd.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray; [progressInd sizeToFit]; progressInd.autoresizingMask = (UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin); progressInd.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells } return progressInd; } - (UIProgressView *)progressBar { if (progressBar == nil) { CGRect frame = CGRectMake(126.0, 20.0, kUIProgressBarWidth, kUIProgressBarHeight); progressBar = [[UIProgressView alloc] initWithFrame:frame]; progressBar.progressViewStyle = UIProgressViewStyleDefault; progressBar.progress = 0.5; progressBar.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells } return progressBar; } @end