I'm new to NS.
How NS render UI, eq: If I update text on Label, does NS rerender Label or just update the text.
Thanks
When you update only text attribute, only the Label's text is updated.
{N} Core Module, iOS, and Android runtime are fully open-source, you may review the code on Github.
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In Xamarin forms, for IOS if the picker item has lengthy text, that text is getting truncated. How to change the xamarin ios picker items font size using customrenderer or how to make the text fit without getting truncated?.
There is another alternative solution as well where you can change the alignment of Picker Item(Default is Center). You can make it left.
For adjusting Text and Style there are plenty of renderer solutions on Stack Overlfow.
For your ref, attaching one of those solutions.
Solution.
I have a "cover" image for the top of one of my views that i'd love to be able to blur out as you scroll it out of view as a cool effect.
My state contains a blurRadius property, which i am binding to the blurRadius={this.state.blurRadius} prop on my <Image> component.
I have a <ScrollView> and am monitoring when it's scrolled with onScroll, where i am calling setState({blurRadius: value}) - value being the distance that you've scrolled the view.
I've also set the scrollEventThrottle={30} prop on the scrollview so that i'm receiving the event regularly as the user scrolls.
The issue seems to be that the blurRadius updates but after a significant delay - and only to the maximum value. Am i missing something in order to make the image apply the new blurRadius with every call of setState?
Could it be that the image is just too large?
You should not use setState to set anything as a response to onScroll, as this leads to poor performance. The reason is that the whole view will rerender for every call to setState, which leads to "view thrashing".
Instead, you should use the Animated API, as this 'declares' the animation to the native UI thread, thus avoiding rerenders.
Brent Vatne (from the Expo team) gives a great explanation of Animated as well as a concrete example of animations as a response to onScroll events in ScrollView here
Hope it helps someone :-)
You can try using setNativeProps instead of setState to see if the performance improves. You just need to give your Image a ref.
this.refs.myImage.setNativeProps({ blurRadius: myValue });
Reducing the image size would also help as it would not need to blur as many pixels.
So I have a chart which has a shared tooltip across multiple series. This is a time-based series, with categories of each hour in a day. I'm able to correctly format the labels in the chart just fine.
The issue I have is that I can't seem to change the title of the tooltip. It's always formatted as m/ddd/yyyy. I've tried changing the template, changing the format, etc, but because it's shared those only seem to be applied to the values and not the category title itself.
Is this possible to do? Can I create a custom tooltip instead of using the chart tooltip builder? I've been trying to do this, but have not gotten it to work successfully yet.
It turns out I needed to set the SharedTemplate instead of the Template.
How could we change the Telerik Skin according to the size of the window or the type of the reading revice?
Example: If the user is on a computer, i want to render the "Default" skin but if it is on a mobile device, i want to render the "MetroTouch" skin.
Is there some way to do that dynamically?
Thanks!
Yes, you can detect the device screen size via the Telerik Device Detection framework and set the desired skin according to its dimensions. See these resources for more information:
http://www.telerik.com/help/aspnet-ajax/detection-framework.html
http://www.telerik.com/products/aspnet-ajax/device-detection-framework.aspx
http://demos.telerik.com/responsive-web-design-aspnet/
Is there an event that fires when the Street View has finished loading all the tiles that make up a panorama? Currently if you change the position manually (StreetViewPanorama.setPosition) the transition is rough, and there is no way to tell when the new files have all loaded. As a result, it's not possible to display a loading GIF unless it's given an arbitrary timeout such as 2 or 3 seconds.
Any ideas?
You can see all available events for a panorama here: http://code.google.com/apis/maps/documentation/javascript/reference.html#StreetViewPanorama
Have you tried using the position_changed event?