2014/10/15 下午 10:13:13

iphone Programming Glossary: redrawn

How would I tint an image programatically on the iPhone?

http://stackoverflow.com/questions/1117211/how-would-i-tint-an-image-programatically-on-the-iphone

you would restrict the actual drawing to only the area passed in to drawRect but since the background image has to be redrawn each time the color changes it's likely the whole thing will need refreshing. To use it create an instance of the object..

Removing text shadow in UITableViewCell when it's selected

http://stackoverflow.com/questions/1184014/removing-text-shadow-in-uitableviewcell-when-its-selected

in tableView cellForRowAtIndexPath before setting the shadow but this obviously doesn't work since the cell is not redrawn after a selection. I also tried overriding the tableView willDisplayCell forRowAtIndexPath delegate method as Kevin suggested..

MKMapView Off Screen Annotation Image Incorrect

http://stackoverflow.com/questions/13869635/mkmapview-off-screen-annotation-image-incorrect

to post but includes a zoom in the annotation images that were previously drawn have changed icons. The map is not redrawn and the annotations are not re added in that process. When I pinch back out on the map the images are different they have..

Saving and restoring CGContext

http://stackoverflow.com/questions/1446446/saving-and-restoring-cgcontext

you by the CALayer that backs your UIView on the iPhone . If all you are doing is moving your view around it won't be redrawn. It will only be drawn if you manually tell it to do so. If you do have to update part of the drawing I recommend splitting..

setNeedsLayout and setNeedsDisplay

http://stackoverflow.com/questions/14506968/setneedslayout-and-setneedsdisplay

Why isn't the UIPickerView widthForComponent delegate method called everytime the view appears?

http://stackoverflow.com/questions/1622839/why-isnt-the-uipickerview-widthforcomponent-delegate-method-called-everytime-th

the appropriate Brassiere data in each component. The component widths are 55 55 55. Scenario #2 Component widths not redrawn 1.1 You select the Belt clothing item and the UIPickerView is drawn with 3 components with the appropriate Belt data in.. share improve this question It turns out that if you reset the picker's delegate the component widths are redrawn each time a selection is made. The modified code looks like this void viewWillAppear BOOL animated .... self.PopulatePickerArray..

Drawing incrementally in a UIView (iPhone)

http://stackoverflow.com/questions/1798414/drawing-incrementally-in-a-uiview-iphone

I have understood so far every time I draw something in the drawRect of a UIView the whole context is erased and then redrawn. So I have to do something like this to draw a series of dots Method A drawing everything on every call void drawRect CGRect..

How can I change the background image for my NavigationBar on a per page basis?

http://stackoverflow.com/questions/3483921/how-can-i-change-the-background-image-for-my-navigationbar-on-a-per-page-basis

your viewWillAppear methods. Then modify your drawRect function above to reference that state. To cause the bar to be redrawn call myNavigationBar setNeedsDisplay when you update the state. This will cause drawRect to be invoked. share improve this..

MKOverlay View is blurred

http://stackoverflow.com/questions/4117182/mkoverlay-view-is-blurred

small on a tile. Then the map is zoomed and not all the image tiles are in the boundingMapRect tiles so they are not redrawn in the correct scale and the scaled down version is zoomed. At least that's what I think happens. Hope this helps. share..

How do I reset after a UIScrollView zoom?

http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom

operation it sets the transform of the content view to whatever the overall scale factor is. Since you've manually redrawn your view at the last scale factor it compounds the scaling which is what you're seeing. As a workaround I use a UIView.. By doing this the transforms sent to the content view are adjusted based on the scale at which the view was last redrawn. When the pinch zooming is done the transform is reset to a scale of 1.0 by bypassing the adjustment in the normal setTransform..

How to Draw a line pixel by pixel using objective C

http://stackoverflow.com/questions/5514410/how-to-draw-a-line-pixel-by-pixel-using-objective-c

c x2 y2 x x2 y y2 CGContextStrokePath c Do not call setNeedsDisplay in your drawRect it causes the view to be redrawn immediately afterwards over and over again. Also try to avoid global variables. For examples there's no need to cache x..

Update UITableViewCell without reload

http://stackoverflow.com/questions/5577401/update-uitableviewcell-without-reload

having is that after I delete a row the indexPath's of the other rows are incorrect as the other rows have not been redrawn. The only way I can find to redraw the table is to call reload but this messes up the animation. I figure this kind of problem..

Embed Google Maps on page without overriding iPhone scroll behavior

http://stackoverflow.com/questions/7534888/embed-google-maps-on-page-without-overriding-iphone-scroll-behavior

to treat the map as a static image that I can scroll past but still allow the zoom buttons and allow the map to be redrawn with directions through a select field I have coded so a literal static image is not a solution. I found this post that..

Custom UIPageControl view, replacing dots with “Page X of Y”

http://stackoverflow.com/questions/865296/custom-uipagecontrol-view-replacing-dots-with-page-x-of-y

alloc initWithArray self.subviews for UIView view in self.subviews view removeFromSuperview make sure the view is redrawn not scaled when the device is rotated self.contentMode UIViewContentModeRedraw void dealloc originalSubviews release super.. kSpacing you must override the setCurrentPage and setNumberOfPages methods to ensure that your control is redrawn when its values change void setCurrentPage NSInteger iPage super setCurrentPage iPage self setNeedsDisplay void setNumberOfPages..