I have a navigation bar on the top of my screen. Is there a way to draw a small green circle? I'd like to be able to enable/disable it.
Use CGContext to draw a circle at a specified spot
Watch http://www.youtube.com/watch?v=7aMb8xEx660 , Demo starts at minute 53
Demo Source: http://www.stanford.edu/class/cs193p/cgi-bin/drupal/system/files/sample_code/Happiness_0.zip
Lecture PDF: http://www.stanford.edu/class/cs193p/cgi-bin/drupal/system/files/lectures/Lecture%205.pdf
Sorry for not answering the option to enable/disable it. I don't really know how to do that.
Maybe you can use a view which you put that circle on, and then you can load/unload it whenever you want :)
Related
I need to create a pop up view looks same as Alertview blur and white transparency (with dark black blackground) , Can any one give me some solution, I tried External libraries RTAlertview, LMAlertview but both looks little difference from Default one.
Thanks!
i want to achieve this functionality..!
On navigation change the bottom arrow should animate to left or right button selected.
i know only one way i can achieve this functionality by changing the complete background with bottom home selected to videos selected ..
so that i will have four complete background images with homeselected ,videos selected,etc
is their any better way to achieve this..
There are lots of custom views at Cocoa Controls
Here is search result
Here is some related
SDSegmentedControl
One more
RS3DSegmentedControl
Use them according to your need.
I am updating my app to iOS 7 and wanted to improve the UI. I want to create a see through background like Control Center. So basically I have a button, which I would like to have a see through and "blurred" background like control center. Thanks!
There's nothing to stop you using a UIToolbar.
Create a UIView as a base view with clear background, add a UIToolbar anchored to it's edges so it fills the view and then add your other controls to your base view above the toolbar.
It'll look for example like this:
The blurring effect is not available as a public API. There are third party implementations available, such as FXBlurView, which I can recommend.
You shouldn't really be using a toolbar. It's called toolbar for a reason.
One way to go would be to take a snapshot image of your background and blur it (you can use UIImage+ImageEffects category included in Apple samples to achieve consistent effect).
You can then just crop the image to desired frame and use it as a background of your button.
Are you looking to have a 'dynamic' blur effect (like in Control Center)? It's still doable, but it makes things more complicated.
You can also create blur effects with GUPImage Framework here is a full tutorial about it iOS blur effect tutorial. The tutorial also explains why you shouldn't use toolbar for blur effect creation
I need the back arrow toolbar bar button item.
In identifier of bar button item, there is play, refresh, reload, and stop.
I need the image of play, but flipped 180 degrees.
Is there a way to flip the image with code? If not, where can I find this image?
here's a simple work around:
declare your button with "initWithTitle" and set the title to #"◀" (it's just a unicode symbol).
Use #"▶" for the forward button to make it consistent.
I tried it and it worked for me.
Do a Google search for play button vector graphic. Make the one you want the image of the button. Should still be able to tell the button to maintain it's bar button style.
One straightforward option is to draw a white triangle of the appropriate size and orientation in an image editor, stick it in an image view, and then use that image view for a bar button item's custom view.
I wouldn't try to use the UIBarButtonSystemItemPlay image. I don't know if manipulating system images is expressly proscribed, but Apple generally doesn't smile on misuse of system items. When you get right down to it, it's just a white triangle, so it'd be hard to tell the difference between drawing your own or reversing theirs. That just seems like all the more reason to draw your own.
I am building a simple app that displays a grid, similar to a guitar neck, and I wanted to draw oval buttons at each intersection of the grid, and attach behaviors to it, like tapping once for sound. Pretty straight forward stuff...
My question is about the use of class for the buttons.
I am able to draw some good looking buttons with UIBezierPath/bezierPathWithOvalInRect:
and now I want interactivity. I read in this forum from one developer that he used a button underneath an image to capture user interaction. I have tried that but I cannot fade out the button all together, as interaction is removed altogether.
Is it possible to draw rounded buttons with UIButton from interface builder?
What is best practice for something simple like drawing rounded buttons and capturing user interaction?
you can try layer.cornerRadius using the QuartzCore framework.
Or, just use an image as a custom button.