I have an application where I regularly use a UIDatePicker inside a table view. Therefore, I made custom DatePickerTableViewCell class, which used to work (a couple of years ago, I don't know the exact date). Now that I'm testing everything again on iOS 14, the date picker does not react on my gestures intended to scroll the wheels. Instead, the table view seems to steal the scroll gesture. Even if I don't set the preferred style to 'Wheels', I can't interact with the date picker.
To reproduce it, you need a table view controller with enough cells to make it scrollable (which cells doesn't matter):
#implementation TableViewController
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 20;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return indexPath.row == 0 ? 216 : tableView.rowHeight;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row > 0)
return [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
return [[DatePickerTableViewCell alloc] initWithFrame:CGRectMake(0, 0, 320, 216)];
}
#end
and of course the DatePickerTableViewCell class itself:
#interface DatePickerTableViewCell () {
UIDatePicker *datePicker;
}
#end
#implementation DatePickerTableViewCell
- (id)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake((frame.size.width - 320) / 2, 0, 320, 216)];
datePicker.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleBottomMargin
| UIViewAutoresizingFlexibleRightMargin;
datePicker.datePickerMode = UIDatePickerModeDate;
if (#available(iOS 13.4, *)) {
datePicker.preferredDatePickerStyle = UIDatePickerStyleWheels;
}
[self addSubview:datePicker];
}
return self;
}
#end
The date picker shows, but I'm not able to interact with it:
You're adding the UIDatePicker as a subview of the UITableViewCell subclass rather than as a subview of the UITableViewCellContentView so it's a sibling rather than child of the content view. My guess is the touches are being absorbed by the content view or the content view isn't being instantiated properly since it's never used.
The structure of your cell as it currently stands:
DatePickerTableViewCell
-- DatePicker
-- UITableViewCellContentView
Switching this line:
[self addSubview:datePicker];
to this:
[self.contentView addSubview:datePicker];
within the DatePickerTableViewCell's - (id)initWithFrame:(CGRect)frame should allow the DatePicker to scroll properly and the structure will be:
DatePickerTableViewCell
-- UITableViewCellContentView
---- DatePicker
Related
Hi i am new for ios and in my app i have created one UITableView and i have set background image for UITableViewcell but image not filling the whole width of screen as like below screen. Why this problem is occuring?
I mean UITableViewCell left and right sides gap is coming images is not filling whole cell width.
please help me someone
my code:-
#import "TableViewController.h"
#interface TableViewController ()
{
UITableView * tableList;
TableCell * Cell;
}
#end
#implementation TableViewController
- (void)viewDidLoad {
[super viewDidLoad];
tableList = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, [[UIScreen mainScreen]bounds].size.width, [[UIScreen mainScreen]bounds].size.height) style:UITableViewStylePlain];
tableList.delegate = self;
tableList.dataSource = self;
tableList.separatorStyle = UITableViewCellSeparatorStyleNone;
[self.view addSubview:tableList];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 10;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *simpleTableIdentifier = #"MyCell";
Cell = (TableCell *)[tableList dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (Cell == nil)
{
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"TableCell" owner:self options:nil];
Cell = [nib objectAtIndex:0];
}
//UIImageView *imageBackground = [[UIImageView alloc] init];
if (indexPath.row == 0) {
Cell.backGroundImage.image = [UIImage imageNamed:#"cell_top.png"];
} else if (indexPath.row == 9) {
Cell.backGroundImage.image = [UIImage imageNamed:#"cell_bottom.png"];
} else {
Cell.backGroundImage.image = [UIImage imageNamed:#"cell_middle.png"];
}
//imageBackground.contentMode = UIViewContentModeScaleToFill;
//Cell.backgroundView = imageBackground;
return Cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
return 44.0;
}
-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{
if ([cell respondsToSelector:#selector(setSeparatorInset:)]) {
[cell setSeparatorInset:UIEdgeInsetsZero];
}
if ([cell respondsToSelector:#selector(setPreservesSuperviewLayoutMargins:)]) {
[cell setPreservesSuperviewLayoutMargins:NO];
}
if ([cell respondsToSelector:#selector(setLayoutMargins:)]) {
[cell setLayoutMargins:UIEdgeInsetsZero];
}
}
#end
Try to set the layoutMargins property of the cells and the UITableView to UIEdgeInsetsZero.
- (void) viewDidLayoutSubviews {
[super viewDidLayoutSubviews];
tableList.layoutMargins = UIEdgeInsetsZero;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
[...]
Cell.layoutMargins = UIEdgeInsetsZero;
return Cell;
}
Also check for the contentMode of the UIImageview.
Cell.backGroundImage.contentMode = UIViewContentModeScaleAspectFill;
try set contentInset on Left = 0
self.tableView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
Use Debug View Hierarchy to figure out UITableView, UITableViewCell or UIImage is not filling the whole width of screen
http://www.raywenderlich.com/98356/view-debugging-in-xcode-6
Please check your "TableCell" in the storyboard. Did you select custom insets option for your custom cell?
Rather than setting up your table view with code, you want to do this in a storyboard. Then you'll want to use auto layout to connect constraints from the table view to the view controller's view. There are lots of tutorials available to teach you how to do this. Learning this will make things much easier in the long run.
Change the name of your tableList property to tableView. That will make more sense to other developers (including yourself in the future), since that's what it is (a UITableView instance).
Your cell is named Cell with a capital C, but you don't want to name properties with capital letters. Also, it doesn't need to be a class property the way it's being used. Remove it from the #interface section.
Coding Guidelines for Cocoa
Remove the -numberOfSectionsInTableView: method. The default is 1, so you don't need code to return the default value.
Instead of -dequeueReusableCellWithIdentifier:, use -dequeueReusableCellWithIdentifier:forIndexPath:. Then you won't need to follow it with a test to see if a cell was returned (it always will be). You'll need to register your nib with -registerNib:forCellReuseIdentifier:. Or better yet, just design it in the storyboard.
It appears that your custom table view cell has a UIImageView named backGroundImage. That should be added as a subview to the cell's backgroundView property (which you'll need to create - the view, not the property, which is already part of UITableViewCell). Set the image view's autoresizingMask so it will resize with the backgroundView:
- (void)awakeFromNib
{
[super awakeFromNib];
self.backgroundView = [[UIView alloc] initWithFrame:self.bounds];
self.backGroundImage.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
self.backGroundImage.frame = self.backgroundView.bounds;
[self.backgroundView addSubview:self.backGroundImage];
}
Remove the -tableView:heightForRowAtIndexPath: method. You only want to use this if you return different values. The default row height is 44.0, so you don't need to do anything else.
I am new in ios development .I have searched many tutorials that are using framework for data-grid with License key.I want to show data like this table at given link . How i can use uicollection view to display tabular data like in link ?
In code in gridview.h file is :
import
#interface GridViewCell : UITableViewCell
#property (nonatomic, strong) UIButton *column1;
#property (nonatomic, strong) UIButton *column2;
#property (nonatomic, strong) UIButton *column3;
#end
The code in gridview.m file is :
//
// GridViewCell.m
// SQLite3DBSample
//
// Created by Dezine House on 22/12/2014.
// Copyright (c) 2014 Bilal ARSLAN. All rights reserved.
//
#define CELL_WIDTH 100
#define CELL_HEIGHT 80
#import "GridViewCell.h"
#implementation GridViewCell
#synthesize column1, column2, column3;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Initialization code
column1 = [[UIButton alloc] initWithFrame:CGRectMake(5, 5, CELL_WIDTH, CELL_HEIGHT)];
[self addSubview:column1];
column2 = [[UIButton alloc] initWithFrame:CGRectMake(CELL_WIDTH+ 10, 5, CELL_WIDTH, CELL_HEIGHT)];
[self addSubview:column2];
column3 = [[UIButton alloc] initWithFrame:CGRectMake(CELL_WIDTH + CELL_WIDTH + 15, 5, CELL_WIDTH, CELL_HEIGHT)];
[self addSubview:column3];
}
return self;
}
- (void)awakeFromNib
{
// Initialization code
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
GridViewCell *cell = (GridViewCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[GridViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
[cell.column1 setBackgroundColor:[UIColor blackColor]];
[cell.column2 setBackgroundColor:[UIColor blackColor]];
[cell.column3 setBackgroundColor:[UIColor blackColor]];
return cell;
}
#end
For creating the grid of n X m use the collectionView delegates
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
return n;
}
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{
return m;
}
Then for creating them of specific size use the delegate method of CollectionView which returns the layout for each cell in collectionView
-(CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{
//for bigger cell
if (indexPath.row == 0) {
return CGSizeMake(120, 44);
}
//for smaller ones
else{
return CGSizeMake(44, 44);
}
}
Hope you know how to use collectionView in ios
I've been working on doing something like this and while I'm not finished tinkering with it, it isn't that hard to do. It may be cleanest to subclass the UICollectionViewCell and the UICollectionViewFlowLayout, but I've not found it necessary as yet. My biggest problem thus far is getting cell borders to look like I want them to. I envision that it may be necessary to subclass one or both of these but thus far it isn't requiring that much code in my VC so I've not done it yet.
In addition to the usual UICollectionView data source/delegate, you want to add UICollectionViewDelegateFlowLayout. In my case, I made each section in my data correspond with a row in the table and each "row" in the indexPath to coincide with a column in the table. It seems to work. Then, implement the following method to give you the size of the cell for each column in a section (looking at the indexPath.row value to determine which column you're working with):
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
In your cellForItemAtIndexPath for my application it was simple enough to compute the column number as follows (my table has six columns):
NSInteger col = indexPath.row % 6;
So, col==0 is the first column, col==5 is the sixth column. Then, create a label to put in the cell:
UILabel *label = [[UILabel alloc] initWithFrame:cell.bounds;
Fill in the label as required and add it as a subview of the cell's content view.
I have a good deal of tweaking to do, but it is reasonably close after just a couple hours of looking around.
I have a tableViewCell in a TableView that gets big if you click on it and if you click it again it goes back to its original size.
What I'd like it to do is, display a datePicker when its big but every time I try to simply add a datePicker in my code it is at the bottom of the tableView and not inside the big cell.
This is my code for adding the datePicker when the cell gets big.
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
if (indexPath.row == 0) {
return 150.0;
}
else if ([self cellIsSelected:indexPath] && indexPath.row == 1 ){
[_dateLabel removeFromSuperview]; //just the label of the cell
// Add the picker
UIDatePicker *pickerView = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 0, 350, 200)];
pickerView.datePickerMode = UIDatePickerModeDate;
[_cell addSubview:pickerView];
return kCellHeight * 4.0;
}
else if (![self cellIsSelected:indexPath]) {
[_myPicker removeFromSuperview];
}
return kCellHeight;
}
How do I add a UIDatePicker to a TableViewCell?
Please take a look at this answer on SO, as it may help you further.
Just remember to set the delegates:
#interface YourTableViewViewController : UITableViewController <UIPickerViewDataSource, UIPickerViewDelegate>
And make sure you return values from these methods:
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return <NUM_OF_SECTIONS>;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return <NUM_OF_ROWS_IN_SECTION>;
}
For the rest, it is self-explanatory there.
I have a uitableview with a tablefooterview. I would like use cell separators within the tableview but would like to get rid of the full screen width separator placed by default between the tableview and the tablefooterview. I have tried
if ([cell respondsToSelector:#selector(setLayoutMargins:)]) {
[cell setLayoutMargins:UIEdgeInsetsZero];
}
and
cell.separatorInset = UIEdgeInsetsMake(0, cell.bounds.size.width, 0, 0);
but neither works
Have a look at this sample implementation.
You can see here that UITableView with plain style does in fact loose the last separator if a footerView is set.
(Orange view is the footerView and there is no separator above him)
Of course in Grouped tableView this does not work as discussed in comments under your question.
https://gist.github.com/bartekchlebek/2b05b5ddcc3efec3f514
#import "ViewController.h"
#interface ViewController () <UITableViewDataSource>
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
UITableView *tableView = [[UITableView alloc] initWithFrame:self.view.bounds
style:UITableViewStylePlain];
tableView.dataSource = self;
tableView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
UIView *footerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 40)];
footerView.backgroundColor = [UIColor orangeColor];
tableView.tableFooterView = footerView;
[self.view addSubview:tableView];
}
#pragma mark - UITableViewDataSource
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"ID"];
cell.textLabel.text = [NSString stringWithFormat:#"Row: %#", #(indexPath.row)];
return cell;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 20;
}
#end
Edit:
I have found that a much simpler way to avoid the gap between the last section and the table footer is to implement heightForFooterInSection and return a very small value that is not 0. This will result in nothing being visible.
For some reason, returning 0 doesn't suppress the rendering of section footers in a grouped-style table view, and it will try to render a 1-point footer. There is other discussion on StackOverflow about this.
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
return CGFLOAT_MIN;
}
I was able to accomplish this in what feels like a slightly hacky way, but it seems to work fine.
My hack is simply to place the actual footer view you want inside of a wrapper view, with a frame position of (0, -1).
Let's say you have a table footer view that you want to use, a class called MyTableFooterView.
In that case you can do something like this:
//This is the view we will actually add as the table footer
//We make it one point shorter since the content will be shifted up
//one point out of its frame
CGRect footerFrame = CGRectMake(0, 0, self.tableView.width, myFooterHeight-1);
UIView* tableFooterWrapper = [[UIView alloc] initWithFrame:footerFrame];
//This is the view that we are trying to use as a table footer.
//We place it 1 point up inside the wrapper so it overlaps that pesky 1-point separator.
CGRect contentFrame = CGRectMake(0, -1, self.tableView.width, myFooterHeight);
UIView* footerContent = [[MyTableFooterView alloc] initWithFrame:contentFrame];
//Make sure the footer expands width for to other screen sizes
footerContent.autoresizingMask = UIViewAutoresizingFlexibleWidth;
[tableFooterWrapper addSubview:footerContent];
self.tableView.tableFooterView = tableFooterWrapper;
This works reliably for me. It's possible that there's a more idiomatic way, but I haven't come across one yet.
Use following code
tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
I added Tableview on xib file(you can see on image).tableview is loading well . But last cell is out of screen so when I Swipe Up last index is showing. When I get off my hand, last cell is not appear. I don't change any height of tableview . Why not fixed to my screen ?
I am using reveal menu like facebook in this project : https://github.com/mikefrederick/MFSideMenu
Also You can see problem on movie.
https://www.dropbox.com/s/usfwdhl5w9znkl6/IMG_0006.MOV
viewcontroller.h
#property(nonatomic,retain)IBOutlet UITableView * tableview;
viewcontroller.m
-(void)viewDidAppear:(BOOL)animated
{
self.tableview.backgroundColor=[UIColor colorWithRed:(28/255.0) green:(28/255.0) blue:(28/255.0) alpha:1];
[self.tableview setSeparatorColor:[UIColor blackColor]];
}
- (void)viewDidLoad
{
[super viewDidLoad];
if ([self respondsToSelector:#selector(edgesForExtendedLayout)])
self.edgesForExtendedLayout = UIRectEdgeNone;
}
#pragma mark -
#pragma mark - UITableViewDataSource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 2;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (section==0)
{
return 5;
}
if (section==1)
{
return 3;
}
return 0;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text =#"exampleCell";
NSLog(#"cell.contentView.bounds.size.width %1.0f",cell.contentView.bounds.size.width);
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
if(section == 1)
return 40;
return 0;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
self.tableview.layer.cornerRadius = 10.0f;
tableView.layer.borderWidth = 2.0;
tableView.layer.borderColor = [UIColor redColor].CGColor;
return 60;
}
#pragma mark UITableViewDelegate
- (void)tableView: (UITableView*)tableView
willDisplayCell: (UITableViewCell*)cell
forRowAtIndexPath: (NSIndexPath*)indexPath
{
cell.backgroundColor =[UIColor colorWithRed:(41/255.0) green:(41/255.0) blue:(41/255.0) alpha:1];
cell.textLabel.backgroundColor = [UIColor clearColor];
cell.detailTextLabel.backgroundColor = [UIColor clearColor];
if([indexPath row] == ((NSIndexPath*)[[tableView indexPathsForVisibleRows] lastObject]).row){
//end of loading
//for example [activityIndicator stopAnimating];
}
}
- (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 30)];
[headerView setBackgroundColor:[UIColor colorWithRed:(112/255.0) green:(112/255.0) blue:(112/255.0) alpha:1]];
UILabel *titleLabel = [ [UILabel alloc] initWithFrame:CGRectMake(20, 0, 300, 44)];
titleLabel.text = #"MÜŞTERİ ALANI";
titleLabel.textColor = [UIColor whiteColor];
titleLabel.backgroundColor = [UIColor clearColor];
[headerView addSubview:titleLabel];
return headerView;
}
In your video, this menu appears to be a slide out menu, presumably using some third party slide out menu controller library. So this view controller is contained within some container view from that. It is possible that the slide out menu controller isn't properly sizing your view controller to fit its container view.
One solution would be to check any example apps that come with the slide out controller you're using to see if they suffer from the bug and report this to the developer if it is the case. This would be good because other developers would benefit from the improvements. In fact it's possible the slide out controller you're using has fixed this bug with a newer version already that you don't have yet.
Another solution, assuming there's an example app that doesn't suffer from this, is to see how it is adding its slide out menu and see if you're failing to do something that they're doing.
Lastly, if there's no example app or you can't figure out why theirs is working differently, try adding the following to your view controller's viewDidAppear: method:
self.view.frame = self.view.superview.bounds;
This assumes that the container view they create is properly sized.
Your problem seems to be in your xib.
You have to set the size of your View to "Freeform" then add autosizing constraints on your view like you did on your tableView.
first you should select the CELL, not the TABLE VIEW. Next, go to the attribute inspector and click the separator, and you should select the custom inserts. Lastly you can adjust the separator line according to your wish. Hope this will help you and others. Thanks for the question too.