Am trying out an example app using UITableView.
The upper (nearly) half of the screen is filled by a UIView which has some components like button, text field, and an image view. The lower half (In IB, its width=320 and height=234 pixels) is filled by a UITableView instance.
Am using custom UITableViewCell objects to be displayed within this UITableView.
This is the size definition of the UITableView instance in IB:
And this is the size definition for the UITableViewCell:
I have defined two types of custom UITableView cells that can be placed in the UITableView (and the decision of which type is decided dynamically based on whether the cell has a picture to be displayed, or not). Cells with picture are bigger and have a different layout than those without. The custom UITableViewCell which has a picture has these size parameters in IB (the height '301' is more than that for the generic UITableViewCell instance '234' specified in the main Storyboard in the screenshot above of the entire screen):
Now, when I run the app and scroll the table view, the table view needs to scroll along the entire screen (i.e. the first half of the screen that has a UIView with she components should also scroll away), just like in the Path app like this:
This is the initial screen in the Path App: (the top half is some fixed UIView and those below in the 2nd half of the screen is the timeline, which is a UITableView)
When you start scrolling the timeline, the upper half also scrolls away:
How can I do this (i.e the top half also scrolls away)?
I tried adding a UIScrollView to the entire screen and put it behind all the other components in the screen, but this didn't help.
Can someone please suggest ? or any pointers?
Make the UITableView take up the entire screen, and add your view that now takes the top half as the headerView of the table view (you can just drag it ontop of it in the interface builder and it should snap right in).
Related
I am trying to achieve a scrolling over a fixed image, as you can see on the picture.
I thought I should use a scrollview but I didn't quite get it how to use it and what to include into the scrollview, since the image and the button on the bottom should be fixed. In addition, the content should only be scrollable, when the text is to long.
I think the best solution here would be using a UITableView inside a UIViewController.
You can then set up the cells to make it look exactly the way you want.
For instance the first cell would just be the image, the second cell would be your title, the third one would be your menu bar, and so on.
This may be really useful if you plan to present dynamically the elements inside your UIViewController (for example if you need to use a database, you may want to animate the insertion of the rows only if the content has be downloaded already)
So using a UIViewController, you can just add the UITableView to it and set it up using contraints so that it fills the entire view. Then you can just add your button on the top of your table view, as a subview of your UIViewController's view (not as a subclass of your table view otherwise your button would end up scrolling too).
And again here you would need to add a few constraints to your button to make it look alright!
Just try it like this and let me know if you have any difficulties in the implementation :)
It is very complex to explain, To understand you must know good autolayout
To achieve that you need two scrollview and little math :)
Suppose your headerview height is 200
As you know when using autolayout we need following view hierarchy
Your view Hierarchy should be
--> Main View
--> ScrollView
--> Container View
-->Your HeaderView (200)
-->Content View (Equal height to UIView)
--> UIView (Your tabs like button , followbutton)
--> ScrollView 2
--> ContainerView
-->Subviews
Scroll view 1 Will used wo scroll the headerview and second scrollview will used to scroll other content of scrollview (Like Tab and text content as shown in picture )
Content View (Equal height to UIView) will allow your content view to give height of 200 extra to scroll bottom and your second scrollview will scroll to top which will allow to scroll your other content too
https://media.giphy.com/media/a2A4AQeAIkAhO/giphy.gif
I'm looking for a clean way to implement a login screen in my iPhone application. I'd like it to appear as a grouped UITableView section with rounded corners and a separator line below between rows (like e.g. the sections in the Settings app). However, I'd like to give it a slightly smaller cornerRadius than the default setting of a UITableView section.
Another thing I'd like to do in that screen is to add a "register as new user" button which causes the whole screen to slide up, presenting the registration screen. There will be a background image that spans both screens vertically and should slide up with together with the content.
I was first thinking to just make a UITableView, set it to grouped, add two sections (one for login and one for registration), add some space between them and disable manual scrolling on the UITableView. However, I found that putting a background image correctly behind a UITableView and to make that scroll together with its content is a bit tricky..
Perhaps I shouldn't be using a UITableView and just write some code myself that can wrap multiple views (each containing a label and a textfield) together into something that appears like a UITableView section? I've been searching around but surprisingly it appears that not too many others are trying to solve this same problem.
Any suggestions would be very welcome!
Sounds like a UITableView is overkill for what you need. I would just create a custom UIViewController and have it handle the layout of all of your subviews as well as any animation you desire.
Just have the parent view take up more space than the device's screen. Then, when you want everything to slide up, animate a change to that view's frame property.
So, I have this UITableView. It's in an iPad application. Some of the cells have an accessory button on the right (the small round arrow). When that is pressed, I present a popover view where the user can select actions related to the table cell that they touched. So far, nothing of this is difficult or exceptional.
But the popover view wants to know where it originates from, so that it can draw the little arrow pointing there. I would naturally like that arrow to point at the table cell the popover relates to.
How can I find out the current on screen coordinates for a certain cell in a table, given that I know it's indexPath?
Use the UITableView method -rectForRowAtIndexPath:. Note that that returns a rect within the table view’s coordinate system—if you need the rect relative to another view within the same window, use the UIView method -convertRect:fromView:.
I have a UITableView as a subview in a ScrollView with other widgets around like a button. I'd like to put the button always at the end of the ScrollView and I'd like to have the UITableView to show dynamically more section. How and where shall I determine the Table size, correctly set it and visualize it?
From Interface Builder it seems that I can only set static size to the TableView (which of course limits the number of sections visible) and stick the button position to the bottom whether a rotation happens.
If you have only few simple controls after the table then I'd suggest putting them to the table itself and get rid of the unhealthy (in my opinion) combination of table view inside scroll view.
You might add the button you are talking about to the table's footer.
It may be done in the Interface Builder (drag-n-drop the button to the bottom of the table view) or in the code ([tableView setTableFooterView:myButton];).
If your button should be smaller that table's width then put it inside UIView and locate as you need.
You can also add table header in a similar way...
In Interface Builder, you have to set the size of the tableview and position the other elements beneath that. I want the tableview to be sized to fit any number of rows and the buttons to be moved down relative to the tableview.
Is it possible to do this without building the whole thing programmatically?
You should embed the buttons within a UIView, and set that UIView as the tableFooterView of the UITableView. You can do this in IB by dragging the view into the bottom of the UITableView. This way the buttons will always be below the last row of the tableview, though I should warn you that if there are more rows than fit on-screen, the buttons won't be visible until you scroll down. If this isn't what you want, then you'll need to do something more complicated (namely, run -layoutSubviews on the UITableView, then ask it for the rect of the last section, and use that to calculate where the buttons should go).