Iphone 从Apple DateCell模板中删除单元格
以下是我最新的应用程序截图： 现在我想删除单元格“Title”和两个单元格（其他项目1）和（其他项目2）。我怎样才能正确地做到这一点？我总是出错 这里是MyTableViewController.m（由我编辑，之前从下载）Iphone 从Apple DateCell模板中删除单元格,iphone,ios,objective-c,uitableview,Iphone,Ios,Objective C,Uitableview,以下是我最新的应用程序截图： 现在我想删除单元格“Title”和两个单元格（其他项目1）和（其他项目2）。我怎样才能正确地做到这一点？我总是出错 这里是MyTableViewController.m（由我编辑，之前从下载） #导入“MyTableViewController.h” #定义kPickerAnimationDuration 0.40//动画的持续时间，以将日期选择器滑入视图 #定义用于标识日期选择器视图的kDatePickerTag 99//视图标记 #定义kTitleKey@“t
#导入“MyTableViewController.h”
#定义kPickerAnimationDuration 0.40//动画的持续时间，以将日期选择器滑入视图
#定义用于标识日期选择器视图的kDatePickerTag 99//视图标记
#定义kTitleKey@“title”//key以获取数据源项的标题
#定义kDateKey@“date”//key以获取数据源项的日期值
//跟踪哪些行有日期单元格
#定义kDateStartRow 1
#定义kDateEndRow 2
静态NSString*kDateCellID=@“dateCell”；//具有开始或结束日期的单元格
静态NSString*kDatePickerID=@“日期选择器”；//包含日期选择器的单元格
静态NSString*kOtherCell=@“otherCell”；//最后的剩余单元格
#布拉格标记-
@接口MyTableViewController（）
@属性（非原子，强）NSArray*数据数组；
@属性（非原子，强）NSDateFormatter*dateFormatter；
//使用UIDatePicker跟踪哪些indexPath指向单元格
@属性（非原子，强）NSIndexPath*datePickerIndexPath；
@属性（分配）NSInteger pickerCellRowHeight；
@属性（非原子，强）ibuidatepicker*pickerView；
//此按钮仅在显示日期选择器时出现（iOS 6.1.x或更早版本）
@属性（非原子，强）IBuiBarbuttonItem*doneButton；
@结束
#布拉格标记-
@MyTableViewController的实现
/*! 已为此视图控制器加载主视图
*/
-（无效）viewDidLoad
{
[超级视图下载]；
//设置我们的数据源
NSMutableDictionary*itemOne=[{kTitleKey:@“Title”}mutableCopy]；
NSMutableDictionary*itemTwo=[{kTitleKey:@“Startdatum”，
kDateKey:[NSDate]}mutableCopy]；
NSMutableDictionary*itemThree=[@{kTitleKey:@“Enddatum”，
kDateKey:[NSDate]}mutableCopy]；
NSMutableDictionary*itemFour=[@{kTitleKey:@”（其他item1）}mutableCopy]；
NSMutableDictionary*itemFive=[@{kTitleKey:@”（其他项2）}mutableCopy]；
self.dataArray=@[itemOne，itemTwo，itemThree，itemFour，itemFive]；
self.dateFormatter=[[NSDateFormatter alloc]init]；
[self.dateFormatter setDateStyle:NSDateFormatterShortStyle]；//显示短样式日期格式
[self.dateFormatter setTimeStyle:NSDateFormatterShortStyle]；
//获取picker view单元格的高度，因为该单元格是在我们的故事板中预定义的
UITableViewCell*pickerViewCellToCheck=[self.tableView出列重用CellWithIdentifier:kDatePickerID]；
self.pickerCellRowHeight=pickerViewCellToCheck.frame.size.height；
//如果在后台发生本地更改，我们需要得到通知，以便更新日期
//表格视图单元格中的格式
//
[[NSNotificationCenter defaultCenter]添加观察者：self
选择器：@selector（localeChanged:）
名称：NSCurrentLocaleDidChangeNotification
对象：无]；
}
-（无效）解除锁定
{
[[NSNotificationCenter defaultCenter]移除观察者：self
名称：NSCurrentLocaleDidChangeNotification
对象：无]；
}
#pragma标记-区域设置
/*! 响应区域格式或区域设置更改。
*/
-（无效）局部更改：（NSNotification*）notif
{
//用户更改了设置中的区域设置（区域格式），因此我们在此处收到通知
//更新表格视图单元格中的日期格式
//
[self.tableView重载数据]；
}
#pragma标记-实用程序
/*! 返回iOS的主要版本（即，对于iOS 6.1.3，返回6）
*/
NSUInteger设备系统管理器版本（）
{
静态NSUInteger_设备SystemMaxJorVersion=-1；
静态调度一次；
一次发送（一次发送）^{
_DeviceSystemMaxJorVersion=[UIDevice currentDevice]systemVersion]组件由字符串分离：@.“]objectAtIndex:0]intValue]；
});
返回设备系统主版本；
}
#定义嵌入式日期选择器（DeviceSystemMaxJorVersion（）>=7）
/*! 确定给定的indexPath下面是否有一个带有UIDatePicker的单元格。
@param indexPath检查其单元格下面是否有UIDatePicker的indexPath。
*/
-（BOOL）hasPickerForIndexPath:（NSIndexPath*）indexPath
{
BOOL hasDatePicker=否；
NSInteger targetedRow=indexPath.row；
targetDrow++；
UITableViewCell*checkDatePickerCell=
[self.tableView cellforrow索引路径：[nsindepath indexPathForRow:targetedRow目录：2]]；
UIDatePicker*checkDatePicker=（UIDatePicker*）[checkDatePickerCell视图带标记：kDatePickerTag]；
hasDatePicker=（checkDatePicker！=nil）；
返回hasDatePicker；
}
/*! 更新UIDatePicker的值以与其上方单元格的日期匹配。
*/
-（void）updateDatePicker
{
if（self.datePickerIndexPath！=nil）
{
UITableViewCell*associatedDatePickerCell=[self.tableView cellForRowAtIndexPath:self.datePickerIndexPath]；
UIDatePicker*targetedDatePicker=（UIDatePicker*）[关联的DatePickerCell视图和标记：kDatePickerTag]；
if（targetedtapeicker！=nil）
{
//我们在此单元格中找到UIDatePicker，请更新其日期值
//
NSDictionary*itemData=self.dataArray[self.datePickerIndexPath.row-1]；
[TargetedTatePicker setDate:[itemData valueForKey:kDateKey]动画：否]；
}
}
}
/*! 确定UITableViewController的任何单元格中是否有UIDatePicker。
*/
-（BOOL）hasInlineDatePicker
{
返回（self.datePic）
#import "MyTableViewController.h"
#define kPickerAnimationDuration 0.40 // duration for the animation to slide the date picker into view
#define kDatePickerTag 99 // view tag identifiying the date picker view
#define kTitleKey @"title" // key for obtaining the data source item's title
#define kDateKey @"date" // key for obtaining the data source item's date value
// keep track of which rows have date cells
#define kDateStartRow 1
#define kDateEndRow 2
static NSString *kDateCellID = @"dateCell"; // the cells with the start or end date
static NSString *kDatePickerID = @"datePicker"; // the cell containing the date picker
static NSString *kOtherCell = @"otherCell"; // the remaining cells at the end
#pragma mark -
@interface MyTableViewController ()
@property (nonatomic, strong) NSArray *dataArray;
@property (nonatomic, strong) NSDateFormatter *dateFormatter;
// keep track which indexPath points to the cell with UIDatePicker
@property (nonatomic, strong) NSIndexPath *datePickerIndexPath;
@property (assign) NSInteger pickerCellRowHeight;
@property (nonatomic, strong) IBOutlet UIDatePicker *pickerView;
// this button appears only when the date picker is shown (iOS 6.1.x or earlier)
@property (nonatomic, strong) IBOutlet UIBarButtonItem *doneButton;
@end
#pragma mark -
@implementation MyTableViewController
/*! Primary view has been loaded for this view controller
*/
- (void)viewDidLoad
{
[super viewDidLoad];
// setup our data source
NSMutableDictionary *itemOne = [@{ kTitleKey : @"Title" } mutableCopy];
NSMutableDictionary *itemTwo = [@{ kTitleKey : @"Startdatum",
kDateKey : [NSDate date] } mutableCopy];
NSMutableDictionary *itemThree = [@{ kTitleKey : @"Enddatum",
kDateKey : [NSDate date] } mutableCopy];
NSMutableDictionary *itemFour = [@{ kTitleKey : @"(other item1)" } mutableCopy];
NSMutableDictionary *itemFive = [@{ kTitleKey : @"(other item2)" } mutableCopy];
self.dataArray = @[itemOne, itemTwo, itemThree, itemFour, itemFive];
self.dateFormatter = [[NSDateFormatter alloc] init];
[self.dateFormatter setDateStyle:NSDateFormatterShortStyle]; // show short-style date format
[self.dateFormatter setTimeStyle:NSDateFormatterShortStyle];
// obtain the picker view cell's height, works because the cell was pre-defined in our storyboard
UITableViewCell *pickerViewCellToCheck = [self.tableView dequeueReusableCellWithIdentifier:kDatePickerID];
self.pickerCellRowHeight = pickerViewCellToCheck.frame.size.height;
// if the local changes while in the background, we need to be notified so we can update the date
// format in the table view cells
//
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(localeChanged:)
name:NSCurrentLocaleDidChangeNotification
object:nil];
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self
name:NSCurrentLocaleDidChangeNotification
object:nil];
}
#pragma mark - Locale
/*! Responds to region format or locale changes.
*/
- (void)localeChanged:(NSNotification *)notif
{
// the user changed the locale (region format) in Settings, so we are notified here to
// update the date format in the table view cells
//
[self.tableView reloadData];
}
#pragma mark - Utilities
/*! Returns the major version of iOS, (i.e. for iOS 6.1.3 it returns 6)
*/
NSUInteger DeviceSystemMajorVersion()
{
static NSUInteger _deviceSystemMajorVersion = -1;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_deviceSystemMajorVersion = [[[[[UIDevice currentDevice] systemVersion] componentsSeparatedByString:@"."] objectAtIndex:0] intValue];
});
return _deviceSystemMajorVersion;
}
#define EMBEDDED_DATE_PICKER (DeviceSystemMajorVersion() >= 7)
/*! Determines if the given indexPath has a cell below it with a UIDatePicker.
@param indexPath The indexPath to check if its cell has a UIDatePicker below it.
*/
- (BOOL)hasPickerForIndexPath:(NSIndexPath *)indexPath
{
BOOL hasDatePicker = NO;
NSInteger targetedRow = indexPath.row;
targetedRow++;
UITableViewCell *checkDatePickerCell =
[self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:targetedRow inSection:2]];
UIDatePicker *checkDatePicker = (UIDatePicker *)[checkDatePickerCell viewWithTag:kDatePickerTag];
hasDatePicker = (checkDatePicker != nil);
return hasDatePicker;
}
/*! Updates the UIDatePicker's value to match with the date of the cell above it.
*/
- (void)updateDatePicker
{
if (self.datePickerIndexPath != nil)
{
UITableViewCell *associatedDatePickerCell = [self.tableView cellForRowAtIndexPath:self.datePickerIndexPath];
UIDatePicker *targetedDatePicker = (UIDatePicker *)[associatedDatePickerCell viewWithTag:kDatePickerTag];
if (targetedDatePicker != nil)
{
// we found a UIDatePicker in this cell, so update it's date value
//
NSDictionary *itemData = self.dataArray[self.datePickerIndexPath.row - 1];
[targetedDatePicker setDate:[itemData valueForKey:kDateKey] animated:NO];
}
}
}
/*! Determines if the UITableViewController has a UIDatePicker in any of its cells.
*/
- (BOOL)hasInlineDatePicker
{
return (self.datePickerIndexPath != nil);
}
/*! Determines if the given indexPath points to a cell that contains the UIDatePicker.
@param indexPath The indexPath to check if it represents a cell with the UIDatePicker.
*/
- (BOOL)indexPathHasPicker:(NSIndexPath *)indexPath
{
return ([self hasInlineDatePicker] && self.datePickerIndexPath.row == indexPath.row);
}
/*! Determines if the given indexPath points to a cell that contains the start/end dates.
@param indexPath The indexPath to check if it represents start/end date cell.
*/
- (BOOL)indexPathHasDate:(NSIndexPath *)indexPath
{
BOOL hasDate = NO;
if ((indexPath.row == kDateStartRow) ||
(indexPath.row == kDateEndRow || ([self hasInlineDatePicker] && (indexPath.row == kDateEndRow + 1))))
{
hasDate = YES;
}
return hasDate;
}
#pragma mark - UITableViewDataSource
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 3;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return ([self indexPathHasPicker:indexPath] ? self.pickerCellRowHeight : self.tableView.rowHeight);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (section == 2) {
if ([self hasInlineDatePicker])
{
// we have a date picker, so allow for it in the number of rows in this section
NSInteger numRows = self.dataArray.count;
return ++numRows;
}
return self.dataArray.count;
} else {
if (section == 0) {
return 2;
} else {
return 1;
}
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = nil;
if (indexPath.section <= 1) {
static NSString *CellIdentifier = @"Cell";
// Configure the cell...
//UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
if (indexPath.section == 0) {
switch (indexPath.row) {
case 0:
cell.textLabel.text = @"Hausaufgaben";
cell.accessoryType = UITableViewCellAccessoryCheckmark;
break;
case 1:
cell.textLabel.text = @"Prüfung";
break;
default:
break;
}
} else {
UITextField *lblMainLabel = [[UITextField alloc]initWithFrame:CGRectMake(50, 9, 150, 25)];
lblMainLabel.tag = 42;
lblMainLabel.font = [UIFont fontWithName:@"Helvetica-Neue" size:15];
lblMainLabel.textColor = [UIColor blackColor];
lblMainLabel.placeholder = @"Beschreibung";
[cell.contentView addSubview:lblMainLabel];
cell.textLabel.text = @"Mat";
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
} else {
NSString *cellID = kOtherCell;
if ([self indexPathHasPicker:indexPath])
{
// the indexPath is the one containing the inline date picker
cellID = kDatePickerID; // the current/opened date picker cell
}
else if ([self indexPathHasDate:indexPath])
{
// the indexPath is one that contains the date information
cellID = kDateCellID; // the start/end date cells
}
cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (indexPath.row == 0)
{
// we decide here that first cell in the table is not selectable (it's just an indicator)
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
// if we have a date picker open whose cell is above the cell we want to update,
// then we have one more cell than the model allows
//
NSInteger modelRow = indexPath.row;
if (self.datePickerIndexPath != nil && self.datePickerIndexPath.row < indexPath.row)
{
modelRow--;
}
NSDictionary *itemData = self.dataArray[modelRow];
// proceed to configure our cell
if ([cellID isEqualToString:kDateCellID])
{
// we have either start or end date cells, populate their date field
//
cell.textLabel.text = [itemData valueForKey:kTitleKey];
cell.detailTextLabel.text = [self.dateFormatter stringFromDate:[itemData valueForKey:kDateKey]];
}
else if ([cellID isEqualToString:kOtherCell])
{
// this cell is a non-date cell, just assign it's text label
//
cell.textLabel.text = [itemData valueForKey:kTitleKey];
}
}
return cell;
}
/*! Adds or removes a UIDatePicker cell below the given indexPath.
@param indexPath The indexPath to reveal the UIDatePicker.
*/
- (void)toggleDatePickerForSelectedIndexPath:(NSIndexPath *)indexPath
{
[self.tableView beginUpdates];
NSArray *indexPaths = @[[NSIndexPath indexPathForRow:indexPath.row + 1 inSection:2]];
// check if 'indexPath' has an attached date picker below it
if ([self hasPickerForIndexPath:indexPath])
{
// found a picker below it, so remove it
[self.tableView deleteRowsAtIndexPaths:indexPaths
withRowAnimation:UITableViewRowAnimationFade];
}
else
{
// didn't find a picker below it, so we should insert it
[self.tableView insertRowsAtIndexPaths:indexPaths
withRowAnimation:UITableViewRowAnimationFade];
}
[self.tableView endUpdates];
}
/*! Reveals the date picker inline for the given indexPath, called by "didSelectRowAtIndexPath".
@param indexPath The indexPath to reveal the UIDatePicker.
*/
- (void)displayInlineDatePickerForRowAtIndexPath:(NSIndexPath *)indexPath
{
// display the date picker inline with the table content
[self.tableView beginUpdates];
BOOL before = NO; // indicates if the date picker is below "indexPath", help us determine which row to reveal
if ([self hasInlineDatePicker])
{
before = self.datePickerIndexPath.row < indexPath.row;
}
BOOL sameCellClicked = (self.datePickerIndexPath.row - 1 == indexPath.row);
// remove any date picker cell if it exists
if ([self hasInlineDatePicker])
{
[self.tableView deleteRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:self.datePickerIndexPath.row inSection:2]]
withRowAnimation:UITableViewRowAnimationFade];
self.datePickerIndexPath = nil;
}
if (!sameCellClicked)
{
// hide the old date picker and display the new one
NSInteger rowToReveal = (before ? indexPath.row - 1 : indexPath.row);
NSIndexPath *indexPathToReveal = [NSIndexPath indexPathForRow:rowToReveal inSection:2];
[self toggleDatePickerForSelectedIndexPath:indexPathToReveal];
self.datePickerIndexPath = [NSIndexPath indexPathForRow:indexPathToReveal.row + 1 inSection:2];
}
// always deselect the row containing the start or end date
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
[self.tableView endUpdates];
// inform our date picker of the current date to match the current cell
[self updateDatePicker];
}
/*! Reveals the UIDatePicker as an external slide-in view, iOS 6.1.x and earlier, called by "didSelectRowAtIndexPath".
@param indexPath The indexPath used to display the UIDatePicker.
*/
- (void)displayExternalDatePickerForRowAtIndexPath:(NSIndexPath *)indexPath
{
// first update the date picker's date value according to our model
NSDictionary *itemData = self.dataArray[indexPath.row];
[self.pickerView setDate:[itemData valueForKey:kDateKey] animated:YES];
// the date picker might already be showing, so don't add it to our view
if (self.pickerView.superview == nil)
{
CGRect startFrame = self.pickerView.frame;
CGRect endFrame = self.pickerView.frame;
// the start position is below the bottom of the visible frame
startFrame.origin.y = self.view.frame.size.height;
// the end position is slid up by the height of the view
endFrame.origin.y = startFrame.origin.y - endFrame.size.height;
self.pickerView.frame = startFrame;
[self.view addSubview:self.pickerView];
// animate the date picker into view
[UIView animateWithDuration:kPickerAnimationDuration animations: ^{ self.pickerView.frame = endFrame; }
completion:^(BOOL finished) {
// add the "Done" button to the nav bar
self.navigationItem.rightBarButtonItem = self.doneButton;
}];
}
}
#pragma mark - UITableViewDelegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.section == 0) {
if (indexPath.row == 0) {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
UITableViewCell *cell2 = [[self tableView] cellForRowAtIndexPath:[NSIndexPath indexPathForRow:1 inSection:0]];
cell2.accessoryType = UITableViewCellAccessoryNone;
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
}else {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
UITableViewCell *cell2 = [[self tableView] cellForRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]];
cell2.accessoryType = UITableViewCellAccessoryNone;
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
}
}else {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if (cell.reuseIdentifier == kDateCellID)
{
if (EMBEDDED_DATE_PICKER)
[self displayInlineDatePickerForRowAtIndexPath:indexPath];
else
[self displayExternalDatePickerForRowAtIndexPath:indexPath];
}
else
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
}
}
#pragma mark - Actions
/*! User chose to change the date by changing the values inside the UIDatePicker.
@param sender The sender for this action: UIDatePicker.
*/
- (IBAction)dateAction:(id)sender
{
NSIndexPath *targetedCellIndexPath = nil;
if ([self hasInlineDatePicker])
{
// inline date picker: update the cell's date "above" the date picker cell
//
targetedCellIndexPath = [NSIndexPath indexPathForRow:self.datePickerIndexPath.row - 1 inSection:2];
}
else
{
// external date picker: update the current "selected" cell's date
targetedCellIndexPath = [self.tableView indexPathForSelectedRow];
}
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:targetedCellIndexPath];
UIDatePicker *targetedDatePicker = sender;
// update our data model
NSMutableDictionary *itemData = self.dataArray[targetedCellIndexPath.row];
[itemData setValue:targetedDatePicker.date forKey:kDateKey];
// update the cell's date string
cell.detailTextLabel.text = [self.dateFormatter stringFromDate:targetedDatePicker.date];
}
/*! User chose to finish using the UIDatePicker by pressing the "Done" button, (used only for non-inline date picker), iOS 6.1.x or earlier
@param sender The sender for this action: The "Done" UIBarButtonItem
*/
- (IBAction)doneAction:(id)sender
{
CGRect pickerFrame = self.pickerView.frame;
pickerFrame.origin.y = self.view.frame.size.height;
// animate the date picker out of view
[UIView animateWithDuration:kPickerAnimationDuration animations: ^{ self.pickerView.frame = pickerFrame; }
completion:^(BOOL finished) {
[self.pickerView removeFromSuperview];
}];
// remove the "Done" button in the navigation bar
self.navigationItem.rightBarButtonItem = nil;
// deselect the current table cell
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
}
@end
#define kPickerAnimationDuration 0.40 // duration for the animation to slide the date picker into view
#define kDatePickerTag 99 // view tag identifiying the date picker view
#define kTitleKey @"title" // key for obtaining the data source item's title
#define kDateKey @"date" // key for obtaining the data source item's date value
// keep track of which rows have date cells
#define kDateStartRow 2
#define kDateEndRow 3
static NSString *kDateCellID = @"dateCell"; // the cells with the start or end date
static NSString *kDatePickerID = @"datePicker"; // the cell containing the date picker
static NSString *kOtherCell = @"otherCell"; // the remaining cells at the end
#pragma mark -
@interface EditShiftDetailViewController ()
@property (nonatomic, strong) NSArray *dataArray;
@property (nonatomic, strong) NSDateFormatter *dateFormatter;
// keep track which indexPath points to the cell with UIDatePicker
@property (nonatomic, strong) NSIndexPath *datePickerIndexPath;
@property (assign) NSInteger pickerCellRowHeight;
@property (nonatomic, strong) IBOutlet UIDatePicker *pickerView;
// this button appears only when the date picker is shown (iOS 6.1.x or earlier)
@property (nonatomic, strong) IBOutlet UIBarButtonItem *doneButton;
@end
#pragma mark -
@implementation EditShiftDetailViewController
/*! Primary view has been loaded for this view controller
*/
- (void)viewDidLoad
{
[super viewDidLoad];
UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
gestureRecognizer.cancelsTouchesInView = NO;
[self.tableView addGestureRecognizer:gestureRecognizer];
// setup our data source
NSMutableDictionary *itemOne = [@{ kTitleKey : @"Tap a cell to change its value:" } mutableCopy];
NSMutableDictionary *itemTwo = [@{ kTitleKey : @"Shift Name:" } mutableCopy];
NSMutableDictionary *itemThree = [@{ kTitleKey : @"Start Time",
kDateKey : self.currentShift.startTime } mutableCopy];
NSMutableDictionary *itemFour = [@{ kTitleKey : @"End Time",
kDateKey : self.currentShift.endTime } mutableCopy];
NSMutableDictionary *itemFive = [@{ kTitleKey : @"" } mutableCopy] ;
self.dataArray = @[itemOne, itemTwo, itemThree, itemFour, itemFive];
self.dateFormatter = [[NSDateFormatter alloc] init];
[self.dateFormatter setDateStyle:NSDateFormatterNoStyle]; // Don't show date
[self.dateFormatter setTimeStyle:NSDateFormatterShortStyle]; // show short-style time format
// obtain the picker view cell's height, works because the cell was pre-defined in our storyboard
UITableViewCell *pickerViewCellToCheck = [self.tableView dequeueReusableCellWithIdentifier:kDatePickerID];
self.pickerCellRowHeight = pickerViewCellToCheck.frame.size.height;
//self.shiftNameField.text = self.currentShift.shiftName;
self.title = [NSString stringWithFormat:@"%@, %@", self.currentDay.name, self.currentShift.shiftName];
// if the local changes while in the background, we need to be notified so we can update the date
// format in the table view cells
//
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(localeChanged:)
name:NSCurrentLocaleDidChangeNotification
object:nil];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
self.currentShift.startTime = [self.dataArray[2] valueForKey:kDateKey];
self.currentShift.endTime = [self.dataArray[3] valueForKey:kDateKey];
[[MyManager sharedManager] saveChanges];
}
- (void) hideKeyboard
{
[self.view endEditing:YES];
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self
name:NSCurrentLocaleDidChangeNotification
object:nil];
}
#pragma mark - Locale
/*! Responds to region format or locale changes.
*/
- (void)localeChanged:(NSNotification *)notif
{
// the user changed the locale (region format) in Settings, so we are notified here to
// update the date format in the table view cells
//
[self.tableView reloadData];
}
#pragma mark - Utilities
/*! Returns the major version of iOS, (i.e. for iOS 6.1.3 it returns 6)
*/
NSUInteger DeviceSystemMajorVersion()
{
static NSUInteger _deviceSystemMajorVersion = -1;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_deviceSystemMajorVersion = [[[[[UIDevice currentDevice] systemVersion] componentsSeparatedByString:@"."] objectAtIndex:0] intValue];
});
return _deviceSystemMajorVersion;
}
#define EMBEDDED_DATE_PICKER (DeviceSystemMajorVersion() >= 7)
/*! Determines if the given indexPath has a cell below it with a UIDatePicker.
@param indexPath The indexPath to check if its cell has a UIDatePicker below it.
*/
- (BOOL)hasPickerForIndexPath:(NSIndexPath *)indexPath
{
BOOL hasDatePicker = NO;
NSInteger targetedRow = indexPath.row;
targetedRow++;
UITableViewCell *checkDatePickerCell =
[self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:targetedRow inSection:0]];
UIDatePicker *checkDatePicker = (UIDatePicker *)[checkDatePickerCell viewWithTag:kDatePickerTag];
hasDatePicker = (checkDatePicker != nil);
return hasDatePicker;
}
/*! Updates the UIDatePicker's value to match with the date of the cell above it.
*/
- (void)updateDatePicker
{
if (self.datePickerIndexPath != nil)
{
UITableViewCell *associatedDatePickerCell = [self.tableView cellForRowAtIndexPath:self.datePickerIndexPath];
UIDatePicker *targetedDatePicker = (UIDatePicker *)[associatedDatePickerCell viewWithTag:kDatePickerTag];
if (targetedDatePicker != nil)
{
// we found a UIDatePicker in this cell, so update it's date value
//
NSDictionary *itemData = self.dataArray[self.datePickerIndexPath.row - 1];
[targetedDatePicker setDate:[itemData valueForKey:kDateKey] animated:NO];
}
}
}
/*! Determines if the UITableViewController has a UIDatePicker in any of its cells.
*/
- (BOOL)hasInlineDatePicker
{
return (self.datePickerIndexPath != nil);
}
/*! Determines if the given indexPath points to a cell that contains the UIDatePicker.
@param indexPath The indexPath to check if it represents a cell with the UIDatePicker.
*/
- (BOOL)indexPathHasPicker:(NSIndexPath *)indexPath
{
return ([self hasInlineDatePicker] && self.datePickerIndexPath.row == indexPath.row);
}
/*! Determines if the given indexPath points to a cell that contains the start/end dates.
@param indexPath The indexPath to check if it represents start/end date cell.
*/
- (BOOL)indexPathHasShiftName:(NSIndexPath *)indexPath
{
return (indexPath.row == 1);
}
- (BOOL)indexPathHasDate:(NSIndexPath *)indexPath
{
BOOL hasDate = NO;
if ((indexPath.row == kDateStartRow) ||
(indexPath.row == kDateEndRow || ([self hasInlineDatePicker] && (indexPath.row == kDateEndRow + 1))))
{
hasDate = YES;
}
return hasDate;
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
self.currentShift.shiftName = textField.text;
self.title = [NSString stringWithFormat:@"%@, %@", self.currentDay.name, self.currentShift.shiftName];
[self.tableView reloadData];
return YES;
}
#pragma mark - UITableViewDataSource
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return ([self indexPathHasPicker:indexPath] ? self.pickerCellRowHeight : self.tableView.rowHeight);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if ([self hasInlineDatePicker])
{
// we have a date picker, so allow for it in the number of rows in this section
NSInteger numRows = self.dataArray.count;
return ++numRows;
}
return self.dataArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = nil;
NSString *cellID = kOtherCell;
if ([self indexPathHasPicker:indexPath])
{
// the indexPath is the one containing the inline date picker
cellID = kDatePickerID; // the current/opened date picker cell
}
else if ([self indexPathHasDate:indexPath])
{
// the indexPath is one that contains the date information
cellID = kDateCellID; // the start/end date cells
}
else if ([self indexPathHasShiftName:indexPath])
{
cellID = @"shiftNameCell";
}
cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (indexPath.row == 0)
{
// we decide here that first cell in the table is not selectable (it's just an indicator)
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
// if we have a date picker open whose cell is above the cell we want to update,
// then we have one more cell than the model allows
//
NSInteger modelRow = indexPath.row;
if (self.datePickerIndexPath != nil && self.datePickerIndexPath.row < indexPath.row)
{
modelRow--;
}
NSDictionary *itemData = self.dataArray[modelRow];
// proceed to configure our cell
if ([cellID isEqualToString:kDateCellID])
{
// we have either start or end date cells, populate their date field
//
cell.textLabel.text = [itemData valueForKey:kTitleKey];
cell.detailTextLabel.text = [self.dateFormatter stringFromDate:[itemData valueForKey:kDateKey]];
}
else if ([cellID isEqualToString:@"shiftNameCell"])
{
UITextField *txtField = (UITextField *)[cell viewWithTag:8];
txtField.delegate = self;
txtField.enablesReturnKeyAutomatically = YES;
txtField.returnKeyType = UIReturnKeyDone;
txtField.text = self.currentShift.shiftName;
}
else if ([cellID isEqualToString:kOtherCell])
{
// this cell is a non-date cell, just assign it's text label
//
/*if (indexPath.row == 4) {
NSTimeInterval timeInterval = [self.currentShift.endTime timeIntervalSinceDate:self.currentShift.startTime];
NSString *cellText = [self stringFromTimeInterval:timeInterval];
cell.textLabel.text = [NSString stringWithFormat:@"Shift Length %@ hours", cellText];
} else { */
cell.textLabel.text = [itemData valueForKey:kTitleKey];
// }
}
return cell;
}
- (NSString *)stringFromTimeInterval:(NSTimeInterval)interval {
NSInteger ti = (NSInteger)interval;
NSInteger minutes = (ti / 60) % 60;
NSInteger hour = (ti / 3600);
return [NSString stringWithFormat:@"%i:%02i", hour, minutes];
}
/*! Adds or removes a UIDatePicker cell below the given indexPath.
@param indexPath The indexPath to reveal the UIDatePicker.
*/
- (void)toggleDatePickerForSelectedIndexPath:(NSIndexPath *)indexPath
{
[self.tableView beginUpdates];
NSArray *indexPaths = @[[NSIndexPath indexPathForRow:indexPath.row + 1 inSection:0]];
// check if 'indexPath' has an attached date picker below it
if ([self hasPickerForIndexPath:indexPath])
{
// found a picker below it, so remove it
[self.tableView deleteRowsAtIndexPaths:indexPaths
withRowAnimation:UITableViewRowAnimationFade];
}
else
{
// didn't find a picker below it, so we should insert it
[self.tableView insertRowsAtIndexPaths:indexPaths
withRowAnimation:UITableViewRowAnimationFade];
}
[self.tableView endUpdates];
}
/*! Reveals the date picker inline for the given indexPath, called by "didSelectRowAtIndexPath".
@param indexPath The indexPath to reveal the UIDatePicker.
*/
- (void)displayInlineDatePickerForRowAtIndexPath:(NSIndexPath *)indexPath
{
// display the date picker inline with the table content
[self.tableView beginUpdates];
BOOL before = NO; // indicates if the date picker is below "indexPath", help us determine which row to reveal
if ([self hasInlineDatePicker])
{
before = self.datePickerIndexPath.row < indexPath.row;
}
BOOL sameCellClicked = (self.datePickerIndexPath.row - 1 == indexPath.row);
// remove any date picker cell if it exists
if ([self hasInlineDatePicker])
{
[self.tableView deleteRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:self.datePickerIndexPath.row inSection:0]]
withRowAnimation:UITableViewRowAnimationFade];
self.datePickerIndexPath = nil;
}
if (!sameCellClicked)
{
// hide the old date picker and display the new one
NSInteger rowToReveal = (before ? indexPath.row - 1 : indexPath.row);
NSIndexPath *indexPathToReveal = [NSIndexPath indexPathForRow:rowToReveal inSection:0];
[self toggleDatePickerForSelectedIndexPath:indexPathToReveal];
self.datePickerIndexPath = [NSIndexPath indexPathForRow:indexPathToReveal.row + 1 inSection:0];
}
// always deselect the row containing the start or end date
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
[self.tableView endUpdates];
// inform our date picker of the current date to match the current cell
[self updateDatePicker];
}
/*! Reveals the UIDatePicker as an external slide-in view, iOS 6.1.x and earlier, called by "didSelectRowAtIndexPath".
@param indexPath The indexPath used to display the UIDatePicker.
*/
- (void)displayExternalDatePickerForRowAtIndexPath:(NSIndexPath *)indexPath
{
// first update the date picker's date value according to our model
NSDictionary *itemData = self.dataArray[indexPath.row];
[self.pickerView setDatePickerMode:UIDatePickerModeTime];
[self.pickerView setMinuteInterval:5];
[self.pickerView setDate:[itemData valueForKey:kDateKey] animated:YES];
// the date picker might already be showing, so don't add it to our view
if (self.pickerView.superview == nil)
{
CGRect startFrame = self.pickerView.frame;
CGRect endFrame = self.pickerView.frame;
// the start position is below the bottom of the visible frame
startFrame.origin.y = self.view.frame.size.height;
// the end position is slid up by the height of the view
endFrame.origin.y = startFrame.origin.y - endFrame.size.height;
self.pickerView.frame = startFrame;
[self.view addSubview:self.pickerView];
// animate the date picker into view
[UIView animateWithDuration:kPickerAnimationDuration animations: ^{ self.pickerView.frame = endFrame; }
completion:^(BOOL finished) {
// add the "Done" button to the nav bar
self.navigationItem.rightBarButtonItem = self.doneButton;
}];
}
}
#pragma mark - UITableViewDelegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if (cell.reuseIdentifier == kDateCellID)
{
if (EMBEDDED_DATE_PICKER)
[self displayInlineDatePickerForRowAtIndexPath:indexPath];
else
[self displayExternalDatePickerForRowAtIndexPath:indexPath];
}
else
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
}
#pragma mark - Actions
/*! User chose to change the date by changing the values inside the UIDatePicker.
@param sender The sender for this action: UIDatePicker.
*/
- (IBAction)dateAction:(id)sender
{
NSIndexPath *targetedCellIndexPath = nil;
if ([self hasInlineDatePicker])
{
// inline date picker: update the cell's date "above" the date picker cell
//
targetedCellIndexPath = [NSIndexPath indexPathForRow:self.datePickerIndexPath.row - 1 inSection:0];
}
else
{
// external date picker: update the current "selected" cell's date
targetedCellIndexPath = [self.tableView indexPathForSelectedRow];
}
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:targetedCellIndexPath];
UIDatePicker *targetedDatePicker = sender;
// update our data model
NSMutableDictionary *itemData = self.dataArray[targetedCellIndexPath.row];
[itemData setValue:targetedDatePicker.date forKey:kDateKey];
// update the cell's date string
cell.detailTextLabel.text = [self.dateFormatter stringFromDate:targetedDatePicker.date];
[[MyManager sharedManager] saveChanges];
[self.tableView reloadData];
}
/*! User chose to finish using the UIDatePicker by pressing the "Done" button, (used only for non-inline date picker), iOS 6.1.x or earlier
@param sender The sender for this action: The "Done" UIBarButtonItem
*/
- (IBAction)doneAction:(id)sender
{
CGRect pickerFrame = self.pickerView.frame;
pickerFrame.origin.y = self.view.frame.size.height;
// animate the date picker out of view
[UIView animateWithDuration:kPickerAnimationDuration animations: ^{ self.pickerView.frame = pickerFrame; }
completion:^(BOOL finished) {
[self.pickerView removeFromSuperview];
}];
// remove the "Done" button in the navigation bar
self.navigationItem.rightBarButtonItem = nil;
// deselect the current table cell
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
}
@end