Created
December 4, 2012 23:29
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Creating a dropdown Utility for TableViewCell
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| // | |
| // TweetbotViewController.m | |
| // testingTweetbotCell | |
| // | |
| // Created by Niels Hansen on 12-12-04. | |
| // Copyright (c) 2012 Niels Hansen. All rights reserved. | |
| // | |
| #import "TweetbotViewController.h" | |
| #import "TweetbotInfoCell.h" | |
| @interface TweetbotViewController () { | |
| int selectedUtilityRow; | |
| } | |
| @property (nonatomic, strong) NSMutableArray *tableViewData; | |
| @property (nonatomic, strong) NSIndexPath *selectedIndexPath; | |
| @end | |
| @implementation TweetbotViewController | |
| @synthesize tableViewData = _tableViewData; | |
| @synthesize selectedIndexPath = _selectedIndexPath; | |
| - (id)initWithStyle:(UITableViewStyle)style | |
| { | |
| self = [super initWithStyle:style]; | |
| if (self) { | |
| // Custom initialization | |
| } | |
| return self; | |
| } | |
| - (void)viewDidLoad | |
| { | |
| [super viewDidLoad]; | |
| selectedUtilityRow = -1; | |
| self.tableViewData = [NSMutableArray arrayWithObjects: | |
| @"Cell 0", | |
| @"Cell 1", | |
| @"Cell 2", | |
| @"Cell 3", | |
| @"Cell 4", | |
| @"Cell 5", | |
| @"Cell 6", | |
| @"Cell 7", | |
| @"Cell 8", | |
| nil]; | |
| self.selectedIndexPath = nil; | |
| [self.tableView reloadData]; | |
| } | |
| - (void)didReceiveMemoryWarning | |
| { | |
| [super didReceiveMemoryWarning]; | |
| // Dispose of any resources that can be recreated. | |
| } | |
| #pragma mark - Table view data source | |
| - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView | |
| { | |
| return 1; | |
| } | |
| - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section | |
| { | |
| return self.tableViewData.count; | |
| } | |
| - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath | |
| { | |
| if (indexPath.row == selectedUtilityRow && indexPath.section == self.selectedIndexPath.section) { | |
| TweetbotInfoCell *utilityCell = (TweetbotInfoCell*)[tableView dequeueReusableCellWithIdentifier:@"DropdownCell"]; | |
| utilityCell.textLabel.text = @"Drop Down Cell"; | |
| return utilityCell; | |
| } else { | |
| UITableViewCell *cell; | |
| cell = [tableView dequeueReusableCellWithIdentifier:@"DataCell"]; | |
| if (cell == nil) { | |
| cell = [tableView dequeueReusableCellWithIdentifier:@"DataCell"]; | |
| } | |
| cell.textLabel.text = [self.tableViewData objectAtIndex:indexPath.row]; | |
| return cell; | |
| } | |
| } | |
| /* | |
| // Override to support conditional editing of the table view. | |
| - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath | |
| { | |
| // Return NO if you do not want the specified item to be editable. | |
| return YES; | |
| } | |
| */ | |
| /* | |
| // Override to support editing the table view. | |
| - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath | |
| { | |
| if (editingStyle == UITableViewCellEditingStyleDelete) { | |
| // Delete the row from the data source | |
| [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade]; | |
| } | |
| else if (editingStyle == UITableViewCellEditingStyleInsert) { | |
| // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view | |
| } | |
| } | |
| */ | |
| /* | |
| // Override to support rearranging the table view. | |
| - (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath | |
| { | |
| } | |
| */ | |
| /* | |
| // Override to support conditional rearranging of the table view. | |
| - (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath | |
| { | |
| // Return NO if you do not want the item to be re-orderable. | |
| return YES; | |
| } | |
| */ | |
| #pragma mark - Table view delegate | |
| -(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath { | |
| if (indexPath.row == selectedUtilityRow && self.selectedIndexPath.section == indexPath.section) { | |
| [cell setBackgroundColor:[UIColor purpleColor]]; | |
| } | |
| } | |
| - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath | |
| { | |
| if (indexPath.row == selectedUtilityRow && self.selectedIndexPath.section == indexPath.section) | |
| return 35; | |
| else | |
| return 66; | |
| } | |
| - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath | |
| { | |
| NSIndexPath *dropDownCellIndexPath = [NSIndexPath indexPathForRow:indexPath.row + 1 | |
| inSection:indexPath.section]; | |
| if (!self.selectedIndexPath) { | |
| // Show Drop Down Cell | |
| [self.tableViewData insertObject:@"Drop Down Celler" atIndex:dropDownCellIndexPath.row]; | |
| self.selectedIndexPath = indexPath; | |
| selectedUtilityRow = dropDownCellIndexPath.row; | |
| [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:dropDownCellIndexPath] | |
| withRowAnimation:UITableViewRowAnimationTop]; | |
| } else { | |
| NSIndexPath *currentdropDownCellIndexPath = [NSIndexPath indexPathForRow:self.selectedIndexPath.row + 1 | |
| inSection:self.selectedIndexPath.section]; | |
| if (indexPath.row == self.selectedIndexPath.row) { | |
| // Hide Drop Down Cell | |
| [self.tableViewData removeObjectAtIndex:currentdropDownCellIndexPath.row]; | |
| selectedUtilityRow = -1; | |
| [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:currentdropDownCellIndexPath] | |
| withRowAnimation:UITableViewRowAnimationTop]; | |
| self.selectedIndexPath = nil; | |
| } else if (indexPath.row == currentdropDownCellIndexPath.row) { | |
| // Dropdown Cell Selected - No Action | |
| return; | |
| } else { | |
| // Switch Dropdown Cell Location | |
| [tableView beginUpdates]; | |
| selectedUtilityRow = -1; | |
| // Hide Dropdown Cell | |
| [self.tableViewData removeObjectAtIndex:currentdropDownCellIndexPath.row]; | |
| [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:currentdropDownCellIndexPath] | |
| withRowAnimation:UITableViewRowAnimationAutomatic]; | |
| // Show Dropdown Cell | |
| NSInteger dropDownCellRow = indexPath.row + ((indexPath.row >= currentdropDownCellIndexPath.row) ? 0 : 1); | |
| dropDownCellIndexPath = [NSIndexPath indexPathForRow:dropDownCellRow | |
| inSection:indexPath.section]; | |
| [self.tableViewData insertObject:@"Drop Down Celler 2" atIndex:dropDownCellIndexPath.row]; | |
| [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:dropDownCellIndexPath] | |
| withRowAnimation:UITableViewRowAnimationAutomatic]; | |
| self.selectedIndexPath = [NSIndexPath indexPathForRow:dropDownCellIndexPath.row - 1 | |
| inSection:dropDownCellIndexPath.section]; | |
| selectedUtilityRow = dropDownCellIndexPath.row; | |
| [tableView endUpdates]; | |
| } | |
| } | |
| } | |
| @end |
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