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UICollectionView current visible cell index
... especially well when each item in your collection view takes up the whole screen.
Swift version
let visibleRect = CGRect(origin: collectionView.contentOffset, size: collectionView.bounds.size)
let visiblePoint = CGPoint(x: visibleRect.midX, y: visibleRect.midY)
let visibleIndexPath = collect...
Android splash screen image sizes to fit all devices
I have a full screen PNG I want to display on splash. Only one error there, and I have no idea
what size to put in every drawable folder ( ldpi , mdpi , hdpi , and xhdpi ). My application is supposed to run good and beautiful on all phones and tablets. What sizes (in pixels) should I create so th...
Using vagrant to run virtual machines with desktop environment
...rtualBox guest tools before starting the GUI. This will give you a healthy screen resolution, integrated mouse, etc.
$ sudo apt-get install -y xfce4 virtualbox-guest-dkms virtualbox-guest-utils virtualbox-guest-x11
$ sudo VBoxClient-all
Only now should you start the GUI as the vagrant user, with $ s...
How Do You Clear The IRB Console?
How do you clear the IRB console screen?
21 Answers
21
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Read only file system on Android
...adb
as a normal user:
adb shell
su
Grant root permissions on touch screen
mount
list all mount points that we have and we can see, in my case, that /dev/stl12 was mounted on /system as ro (ready only), so we just need do:
mount -o rw,remount /dev/stl12 /system
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Twitter Bootstrap 3: how to use media queries?
...responsive layout where I want to adjust a few font sizes according to the screen size.
How can I use media queries to make this kind of logic?
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Programmatically Request Access to Contacts
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Only black screen appear like app is frozen and when i close app i see alert of permission. Do you have an idea about why it is happening? this alert should be on app not under black screen.
– Yucel Bayram
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Using the scrollwheel in GNU screen
How can I setup GNU screen to allow the mouse's scrollwheel to scroll around in the scrollback buffer? I tried to Google about this, but most hits were on how to allow applications inside screen to use the scrollwheel.
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Bootstrap 3 Navbar Collapse
...It's currently set to "expand" @media (min-width: 768px) which is a "small screen" (ie. a tablet) by Bootstrap 3 terms.
@grid-float-breakpoint: @screen-tablet;
If you want to keep the collapsed a little longer you can adjust it like such:
@grid-float-breakpoint: @screen-desktop; (992px br...
Text size and different android screen sizes
...scussed already 1000 times, but I can't adjust the text size for different screen sizes. I try to use 'sp' as size units in my custom style:
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