I am trying to make a table have a twitter-like background color. Please see: http://cocoacontrols.com/posts/how-to-build-the-twitter-ipad-user-experience
All they do is they use the scrollView Texture background and increase the alpha to 0.8 or so. This darkens it from the default apple shade. In my code, the following line of code works fine in iOS 4.3 and gives me a darker texture indeed. Moving to iOS 5, however, it's no longer darker, or for some reason it's not possible for me to darken the texture to be quite as dark. Is this a known problem?
Thanks!
conversationTable.backgroundColor =
[[UIColor scrollViewTexturedBackgroundColor] colorWithAlphaComponent:0.5];
Try to change the background color of the underlaying view (perhaps the window) to black.
The default window background color is (now?) white and so your code will do exactly the opposite.
self.window.backgroundColor = [UIColor blackColor];
Related
I want to change color of bar buttons to white.
Example:
[UINavigationBar appearance].barTintColor = [UIColor colorWithRed:251/255.0 green:108/255.0 blue:108/255.0 alpha:1.0];
[UINavigationBar appearance].tintColor = [UIColor whiteColor];
[UINavigationBar appearance].titleTextAttributes = #{NSForegroundColorAttributeName: [UIColor whiteColor]};
But, when run on iOS 7.1.1, the buttons is displayed with gray, NOT WHITE.
This problem does not occur on the simulator.
In addition, the same problem occurs UISegmentedControl.
How to use white for tintColor?
I figure out it is caused by your Settings of your iPhone...
I once freak out by this problem too...
Check out your setting at:
General -> Accessibility -> Increase Contrast -> Darken Colors
Make sure you turn off Darken Colors.
You'll find the button turned to pure white again.
To Craig Otis:
It is iPhone's feature, some people don't like pure white, so you don't want to force them use pure white. It is a global setting for all apps. Turning it on/off depends on users themselves.
I just point out what is the trick.
On my IOS application, I have a screen with 2 views : one classic UIView and one openGLES view.
The 3d view is over the 2d and I set a clear background to see the 2d view behind it.
it is displayed as expected on all ios devices but the 3d view is opaque on ios simulator.
On the 3DView I use these lines :
[myOpenGLView setBackgroundColor:[UIColor clearColor]];
[myOpenGLView setOpaque:NO];
And before each render I call :
glClearColor(0.,0.,0.,0.);
glClear(GL_COLOR_BUFFER_BIT);
Does anybody got the same problem ?
It seems that I can't change the opacity of the eaglLayer.
My opengl view is a singleton, when I initialize it I call
eaglLayer.opaque = YES;
and when I use it for the second time (where I need transparency) I change its value NO but the layer is black on simulator and translucent on iOS devices.
On the other hand if I set the opacity to NO directly, I don't have the bug on simulator
I understand that when developing in Xcode 5 with and iOS 7 project, the keyboard that pops up when interacting with a UITextField should be translucent and show through any colors in the background. This is not the case in both my projects. I have a colored & blurred background and I'm hoping for that to transpire through the keyboard; however the keyboard remains the default white/gray.
This is what I have so far as a demo:
UIColor *tintColor = [UIColor colorWithWhite:0.21 alpha:0.4];
UIColor *background = [[UIColor alloc] initWithPatternImage:[[UIImage imageNamed:#"universe.jpg"] applyBlurWithRadius:19
tintColor:tintColor
saturationDeltaFactor:1.8
maskImage:nil]];
self.view.backgroundColor = background;
UITextField *text = [[UITextField alloc] initWithFrame:CGRectMake(200, 200, 300, 60)];
[self.view addSubview:text];
I have even tried to set the keyboard appearance type to both UIKeyboardAppearanceDefault and UIKeyboardAppearanceLight
Can someone please guide/tell me on how can I achieve the keyboard translucent effect? Should this be automatic?
Thanks
EDIT 1:
I have the iPad mini, I have the iPad 3rd generation and the iPad 4th generation both with retina displays.
Running iOS 7.0.2
Your code, setup and example worked fine on my xCode. I tried first only setting the background color to something obvious like red.
self.view.backgroundColor = [UIColor redColor];
This showed through the keyboard. Afterwards I tried an image without a blur effect.
UIImageView* img = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"images.jpeg"]];
img.frame = self.view.frame;
[self.view addSubview:img];
This to showed through, but not as much as the red because the image I used was one similar to a galaxy as you stated, and therefore had a lot of black in it.
Lastly I tried your exact code, using the gaussian blur effect to create a color.
UIColor *tintColor = [UIColor colorWithWhite:0.21 alpha:0.4];
UIColor *background = [[UIColor alloc] initWithPatternImage:[[UIImage imageNamed:#"images.jpeg"] applyBlurWithRadius:19 tintColor:tintColor saturationDeltaFactor:1.8 maskImage:nil]];
self.view.backgroundColor = background;
This to also worked, but it was extreamly hard to notice. The combined affect of dark colors being blurred once by the gaussian and being blurred again by the keyboard made it almost unnoticeable. I suggest you try a similar approach to see if you are actually getting a transparent keyboard, because if the code and info you have given are correct, then it seems like you are and maybe can not see it.
Also the keyboard is only slightly transparent, so if you are expecting a full transparency then that is not the case. This slight transparency gets minimized the more uniform the background color is for instance if you had an all black or white background it would be unnoticeable.
Edit: I confirmed that this is not the case on the iPad running iOS7.0.x I get the standard all grey keyboard, even using standard apps like Safari. It seems that Apple had not optimized the transparency for such large screens and it was causing lag issues. It also seems that this is partially fixed in iOS7.1 and there are more transparent iPad features in iOS7.1, but people are recommending turning them off as they cause the iPad to run slower than normal.
iOS 7.0.3 reduced much of the translucency in navigation bars, toolbars, and the keyboard.
For navigation bars and toolbars, starting in iOS 7.0.3, you can adjust the alpha property of the UIColor set as barTintColor if you want it more translucent.
As far as public APIs go, keyboards in iOS 7, however, still have only these options:
textField.keyboardAppearance = UIKeyboardAppearanceDefault; // the default (same as light)
textField.keyboardAppearance = UIKeyboardAppearanceDark; // dark look (previously UIKeyboardAppearanceAlert)
textField.keyboardAppearance = UIKeyboardAppearanceLight; // light look
So I assume you're not getting the translucency you'd like because you're using iOS 7.0.3 or later. You can verify this by downloading an older version of Xcode and running your app in that version's simulator.
As far as private APIs, the keyboard background is made up of UIKBBackdropView and UIKBBackgroundView. You can take a look at their extracted header files here, but you should not modify these if you're submitting to the App Store. (These modifications are grounds for rejection, and also aren't documented so they could be changed in any iOS update.)
I built a simple app to test to try to find this issue, but I've been unable to replicate it except by setting IPHONEOS_DEPLOYMENT_TARGET to a lower version number like 6.0, then running on iOS 6.0. In all cases, on all iOS 7 devices and simulator, the default keyboard has a translucent blur of the content underneath it.
Perhaps you could share a picture, or a sample project?
I have to set a color to text of UITextField. That colour text will be dynamic and its colour will be get from am Image of One colour(say white, hello, brown image). If i have to do statically then i can do by getting RGB of image. but the images are dynamic.
I am using below code to set the colour text of UItextview
_textView.textColor = [UIColor colorWithPatternImage:Image];
This code is working fine in IOS7 but not working below IOS7
How we can fix this issue?
The code is fine. -[UIColor colorWithPatternImage:] works well below iOS 7. There must be something elsewhere in your code causing the problem.
I'm created a Master Detail app on Xcode 4.x for iPad. I've tried adding a custom background image to the detail part of it which works fine the problem is the background image is appearing pixalated. The image is of size 2048 x 1546 (for the Retina screen on my iPad) and if I view it as a photo on the iPad it doesn't appear pixalated so why does it when it's being used as a background?
The code I'm using to set it is,
UIColor *background = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:#"leather.png"]];
self.view.backgroundColor = background;
The only thing I could think of is because a Master Detail app has the scroll bar at the side but how would I fix that? Or what is the real cause? It appears pixalated or any orientation.
Add an image with the filename "leather#2x.png", otherwise UIImage won't recognize that it's supposed to be a high-resolution image. Alternatively, you may want to use a regular UIImageView instead of a pattern color.