2014/10/15 下午 10:10:01

iphone Programming Glossary: heights

How to measure the distance covered by iphone during free fall?

http://stackoverflow.com/questions/1073608/how-to-measure-the-distance-covered-by-iphone-during-free-fall

Newton laws they ignore air drag Iphone rotation etc. Use empirical approach instead. Let the device fall from several heights like 1m 2m 5m 10m 30m... Repeat several times for each height. In each fall measure time. Approximate results by spline...

iOS 6 apps - how to deal with iPhone 5 screen size? [duplicate]

http://stackoverflow.com/questions/12396545/ios-6-apps-how-to-deal-with-iphone-5-screen-size

layout for displaying content then your best bet would be to re imagine the content so that it can accommodate varying heights. If that's not a possibility then the only remaining option is to have two UIs pre iPhone 5 and iPhone 5 . If that sounds..

iOS overflow-x (or position absolute) makes scrolling choppy?

http://stackoverflow.com/questions/12845892/ios-overflow-x-or-position-absolute-makes-scrolling-choppy

ideas how to fix that UPDATE webkit overflow scrolling touch seems to work fine as long no javascript is changing any heights. See the following example. What I'm doing here is updating the height of the body to the contents height of the second..

Tricks for improving iPhone UITableView scrolling performance?

http://stackoverflow.com/questions/1352479/tricks-for-improving-iphone-uitableview-scrolling-performance

UITableView scrolling performance I have a uitableview that loads fairly large images in each cell and the cell heights vary depending on the size of the image. Scrolling performance is decent but can sometimes be jerky. I found these tips..

2 different types of custom UITableViewCells in UITableView

http://stackoverflow.com/questions/1405688/2-different-types-of-custom-uitableviewcells-in-uitableview

subviews objectAtIndex 0 setTag 111 cell.feed item return cell return nil the the two types of cells have different heights which is set correctly. could someone point me in the right direction on how to make the type A custom cell to appear only..

How can I do variable height table cells on the iPhone properly?

http://stackoverflow.com/questions/1443335/how-can-i-do-variable-height-table-cells-on-the-iphone-properly

each cell needs to be by calling sizing methods such as sizeWithFont constrainedToSize on its data. I then add up the heights allow for some padding and store the result with the data. Then when my UITableViewDelegate receives the tableview heightForRowAtIndexPath.. feel it can be done better. So for this to work I had to maintain two parts of code one that would calculate the cell heights and one that would actually draw the cells when the time comes. If anything about the model item changed I had to update.. then the table view goes screwwy. The cells are the perfect height but their x position is that of cells of fixed heights. Notice how the bottom cell is the correct size it's just overlapping the previous cell and the previous cell overlaps its..

How do I scroll a UITableView to a section that contains no rows?

http://stackoverflow.com/questions/159821/how-do-i-scroll-a-uitableview-to-a-section-that-contains-no-rows

empty UITableCell in that's 0 pixels high and scroll to that. But it's my understanding that having cells of varying heights is really bad for scrolling performance. Still I'll try it anyway maybe the performance hit won't be too bad. Update Since..

UITableViewCell expand on click

http://stackoverflow.com/questions/4635338/uitableviewcell-expand-on-click

beginUpdates plus endUpdates self.tableView beginUpdates self.tableView endUpdates Changes to the tableview cells' heights will automatically be calculated with heightForRowAtIndexPath and the changes will be animated too. In fact instead of a..

Iphone - when to calculate heightForRowAtIndexPath for a tableview when each cell height is dynamic?

http://stackoverflow.com/questions/4823197/iphone-when-to-calculate-heightforrowatindexpath-for-a-tableview-when-each-cel

The most obvious first idea is to calculate the height for each cell by calculating and then summing the heights of each view inside the cell inside of cellForRowAtIndexPath and store that final total height for later retrieval. This.. a cell height without creating the views themselves . But usually this is easy to do. For example if your row heights vary in size because they hold varying amounts of text you can use one of the sizeWithFont methods on the relevant string..

How to change UIPickerView height

http://stackoverflow.com/questions/573979/how-to-change-uipickerview-height

e.g smallerPicker UIPickerView alloc initWithFrame CGRectMake 0.0 0.0 320.0 120.0 You will discover that at various heights and widths there are visual glitches. Obviously these glitches would either need to be worked around somehow or choose another..

How to add spacing between UITableViewCell

http://stackoverflow.com/questions/6216839/how-to-add-spacing-between-uitableviewcell

hard coded values for demonstration purposes First I needed to set the heightForRowAtIndexPath to allow for different heights on the UITableViewCell. CGFloat tableView UITableView tableView heightForRowAtIndexPath NSIndexPath indexPath NSString text..

how to display UIActivityIndicatorView BEFORE rotation begins

http://stackoverflow.com/questions/7041261/how-to-display-uiactivityindicatorview-before-rotation-begins

case I kind of do want to block the main thread to do my lifting. In the app I have a tableView all of whose heights need to be recalculated. When which is not a very common use case or I wouldn't even be considering this approach there.. is not a very common use case or I wouldn't even be considering this approach there are very many rows all the new heights are calculated and then cached during a tableView reloadData . If I farm the lifting off and let the rotate proceed then..

How to disable scrolling in UITableView table when the content fits on the screen

http://stackoverflow.com/questions/7410845/how-to-disable-scrolling-in-uitableview-table-when-the-content-fits-on-the-scree

of the object you can see this in Interface Builder displayed on the screen whereas table.contentSize.height is the heights of the header the footer and the height of every cell added together. iphone ios uitableview scrolling share improve..

Is it important to design iPhone App layouts flexible?

http://stackoverflow.com/questions/852881/is-it-important-to-design-iphone-app-layouts-flexible

it important to design iPhone App layouts flexible I am wondering if I would run into troubles when setting the heights of my views in the neb with fixed values. Example The height of the Status Bar is known. It's 20 units. So when making a.. pattern iphone cocoa touch uikit share improve this question I would steer clear of hard coding values for the heights of the status bar tool bar etc into your program. You present some good examples of how these values are dynamic and can..