froyo | redundant long-term storage system | File Utils library
kandi X-RAY | froyo Summary
kandi X-RAY | froyo Summary
Semi-automated bulk storage management. You give Froyo block devices (hard drives) and it gives you a single redundant filesystem. You may add any size drive to expand it. When a drive goes bad, your data is automatically reshaped in the background across the remaining drives (if space allows). You can replace older, smaller drives with bigger new ones while the filesystem remains online.
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QUESTION
I have a set of 100vh sections with child images and text. I'd like to apply a scroll transform to the text to create a parallax effect that moves the text over the image. I've gotten it to work for a single element using vanilla javascript however, I can't quite get it right to apply the same effect to multiple sections with the same class. As it stands now, the effect is applied to all the divs, regardless of if their parent section is in the viewport.
Can you help me edit the javascript such that the child div with the class scroll only transforms if its parent section is in the viewport?
Thanks,
...ANSWER
Answered 2020-Jan-26 at 16:43Use the IntersectionObserver API to observer if elements are in view, or not. This api monitors elements that you specify and triggers a callback whenever an observed element enters or leaves the viewport. This way you can create a list of elements that are in the viewport.
To help with that create a Set. Sets take any kind of type of value and stores it in a list, like a supercharged array, but only with unique values. So no element will be in there twice.
In the intersectionCallback check if an element leaves the viewport and add it to the set. If it leaves the screen, remove it from the set.
Then instead of looping over each .section loop over the set with the sections that are currently in the view. The contents of this set changes constantly depending on where the scroll position is currently.
In the scroll event callback calculate the position of the section relative to the top of the screen. You'll need to offset each transformation to the section to get the correct position of your parallax elements.
I hope this helps you out.
Let me know if anything here is unclear or if I didn't help you in any way.
Cheers!
AddendumI felt that the performance was a little janky so I looked into the code for improvements. The first one was adding a passive listener to the scroll event listener which tells the listener not to wait for event.preventDefault(). Because it will not wait it will cycle faster to the next time the scroll event is fired.
Then there are the calculations. Each time the scroll event is fired the offset is calculated. But the offset does not change when scrolling, so it would make sense to calculate it first and use it later when needed. The same goes for selecting the target element, that one also stays the same.
So I've added two Map objects that hold a connection between the section and their offset + targets. So now the scroll function will get the previously calculated offset and target based on the current section it is looping over.
All theses additions will significantly improve the scroll performance and make your parallax effects feel smooth. I know it is a lot of code and I don't expect that everything makes sense right away, but if you want I could try to explain what everything does and why/how you use it.
QUESTION
I am receiving this error upon compiling:
error: undefined reference to 'Android::os::Build::VERSION::cls'
I am slowing implementing jni methods to access java code via cpp. I have done a lot of digging trying to locate my specific problem with no solution. There are many undefined references errors posted, but none that are related to my error (correct me if I am wrong). I am trying to create subclasses inside a class. If anyone could explain what is wrong with my code, it would be much appreciated. Code is below.
...ANSWER
Answered 2019-Dec-18 at 12:30Your public: static jclass cls; is a declaration, not a definition.
If you are compiling in C++17 mode you can either change that to
QUESTION
I apologize if this is a repeat, I have looked through many answers but I haven't found one that really hits on what I am trying to do.
I have a dataset that contains duplicate names but doesn't not necessarily have an assigned account number. For example:
...ANSWER
Answered 2019-Nov-22 at 21:55Note stringsAsFactors = F
QUESTION
I and Using google protobuffer to form my json and send as post call to the server but it will return me 400 Bad Request but at a same json i will send to the Postman it will return me valid response but in android it not send me valid response i did not figure out what the actual problem is occurring
...ANSWER
Answered 2019-Oct-17 at 16:40Try doing something like this.
QUESTION
I'm trying to build a Qt application for pairing / connecting bluetooth devices on a Linux device. I'm using the BlueZ API (https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/doc) over D-Bus as descibed in the BlueZ official site (http://www.bluez.org/page/8/).
The general procedure is described in here: https://www.kynetics.com/docs/2018/pairing_agents_bluez/
At the moment, I can use the APIs for pairing/connecting devices without problems.
BUT I cannot figure out how to use the pairing agent.
I'm trying to follow the direction pointed out here: How can i set the bluetooth pin number in linux C/C++
QDBusAbstractAdaptor object does not export implemented dbus interface
I searched a lot on the web and there are tons of code:
https://github.com/sdemario/qt-bluez-demos
https://github.com/KDE/bluez-qt
https://android.googlesource.com/platform/external/bluetooth/bluez/+/froyo-release/test/agent.c
https://github.com/pauloborges/bluez/blob/master/client/agent.c
https://www.linumiz.com/bluetooth-connectdevice-without-scanning/
but, still, I can't understand how this works. There are also a lot of scripts in python out there, but I'm working with C++.
My (pseudo)-code is the following:
...ANSWER
Answered 2019-Sep-13 at 14:14Ok, now it works. The way to do it is explained in QDBusAbstractAdaptor object does not export implemented dbus interface
Details of the implementation are in the last EDIT of this question. The last thing to to is to implement the "Pair" method on the Device1 interface asynchronously with callWithCallback:
QUESTION
thank you for reading my question. I make a floating view and it has an image inside. It is translucent.
I want this floating view just shows its translucent image and doesn't bother me at all.
Pass touches to the view under
I've seen this article and I've done it. OnTouchListener -> OnTouch -> return false. clickable = false, focusable = false.
But the touch event doesn't pass through my floating view. Would it be possible to solve my problem? Thank you. I'm going to really appreciate it if you could give me just one hint.
...ANSWER
Answered 2019-Aug-26 at 15:47That's not possible. Communication between apps is limited and there is no touch events communication.
QUESTION
I have a scenario in which I am pulling some strings on the bases of some search text.
All things are working fine but the data display order(sorting) is not helping much of it.
I am attaching a script here which will illustrate the scenario.
...ANSWER
Answered 2018-Oct-24 at 13:44If I understand your logic correctly, why not just do this:
QUESTION
In this official Android source page (https://source.android.com/setup/start/build-numbers) that contains the code names, API levels and versions numbers some of the versions contain the character x in its version number for example:
- Froyo: the version number is 2.2.x
- Honeycomb: the version number is 3.2.x
So what does x character represents in the version numbers?
...ANSWER
Answered 2018-Oct-24 at 03:18I believe that the "x" stands for all the versions for the specified version. For example, 2.2.x stands for 2.2.1, 2.2.2, and 2.2.3.
QUESTION
Using this repository :https://github.com/dds861/Retrofit2 And Following this tutorial: https://medium.com/@dds861/json-parsing-using-retrofit-and-recycleview-2300d9fdcf15 The code works fine out of the box but it gives me a null pointer exception if i changed the name of the array returned by the JsonResponse Class. This is the response returned by Json:
...ANSWER
Answered 2018-Feb-18 at 10:30You can change the array name in your pojo class but you should keep the serialized name to android.
QUESTION
I'm in trouble, I'm trying to make a SliderLayout inside of a NavigationDrawer. Yesterday it was working as good as possible, but on today's day i opened the android studio, and the slider stopped from working, i didn't change the code, and now, its throws an exception that is NullPointerException and here is what it says: Attempt to invoke virtual method 'void com.daimajia.slider.library.SliderLayout.addSlider(com.daimajia.slider.library.SliderTypes.BaseSliderView)' on a null object reference ;
Here is the code that im using right now:
...ANSWER
Answered 2018-Feb-03 at 10:26but what i do know is that the @id/slider is from "news_content_activity.xml" and im calling the "news_nav_activity.xml"
(that contains "news_content_activity.xml" layout in)
if you mean in contains -> that you use
Specify the ID in the
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