What I want to achieve is to drag red box view and drop in on the aqua boxview. The aqua box view should then take the place of the redbox view. How can I achieve this in Xamarin Forms ? I have added the following XAML code below. Please someone help me with this.
AFAIK Xamarin.Forms does not support drag-n-drop out of the box, hence you'll have to implement it yourself. It won't be easy, since there are certainly some edge cases to consider, but it's achievable. Basically the steps could be (maybe there are other options)
Add an AbsoluteLayout that wraps your Grid
Add an PanGestureRecognizer
When the pan gesture starts, check if it's on the red BoxView
If so, move the red BoxView to the AbsoluteLayout and remove it from the Grid
Move the red BoxView if the pan is updated
When the users stops the pan, check whether the red BoxView where you'd expect it to be dropped
If so, drop it (whatever that means in the context of your app)
If not, animate it back to its original position, remove it from the AbsoluteLayout and add it to the Grid
If you have tried to implement it and are stuck with a more concrete issue, feel free to ask another question about it.
Related
I have a SectionList which scrolls/swipes vertically. Can I bind a swipe gesture on it, so that it results in swiping a completely separate View which is behind it? Furthermore, is there an example someone could lead me to, in which a swipe gesture on a SectionList is bound to the animation of another object or objects? Here is a good example of what I am trying to achieve:
When the view is scrolled vertically in the example above it causes a menu to animate in from the top. That is close to the desired effect I'm seeking. I'd also love to know how to achieve that rotational animation tied to the horizontal swipe. I'm thinking that I will likely need the Animated API for this kind of behavior. Any tutorials or code examples you have would really help.
I'm essentially making a 'shopping cart' UI and I want it so that when the user hits the 'Add' button, a little tiny box-label appears at the bottom of the screen that says 'Added Item' or something like that.
My question is how to do that with my current set up. I am currently using a nested Grid inside of a Scroll view for the main content of the page. I want the box-label to fade in at the bottom of the screen and stay located at the bottom of the screen ontop of everything else even if you scroll, until the animation fades.
Now i figure it doesn't make sense to add it into the grid since the grid's end will be out of view in the scrolling part of the scroll view, and same for the Scroll View. I am considering nesting the entire scroll view inside of a stack layout but i fear the button will just be located at the end of the stack layout under the scroll view instead of on TOP of the scroll view. How do you recommend I achieve this effect?
I prefer not to use a custom renderer if possible due to my lack of experience in the three separate platforms.
Thanks
Make vertically oriented stack layout. When you need to add you animation add it programmatically to the stack. When it finishes remove it from stack. Your scroll view will not affect animation
I want to have two buttons side by side, and a BoxView, which will stand under the button which is pressed, therefore it must be able to slide from under one button, to another. I tried looking for that but cannot find anything related to Xamarin Forms position animation. How can I do that?
Any resources or advices on doing what I'm trying to do will be welcomed, thanks.
Use LayoutTo(position, duration, easing) method like:
yourBoxView.LayoutTo(new Rectangle(x,y,width,height),500,Easing.Linear)
I have a ContentView with a StackLayout with multiple children sized to the full width of the screen. In other words, if the screen width is 320 and I have five children, the inner StackLayout is resized to 1600.
In this ContentView, I have Next and Previous buttons that when clicked, animate the inner StackLayout's TranslateX property. Basically, I'm creating a carousel by translating the StackLayout within the ContentView. I chose this route because I was having layout issues using a ScrollView and a custom renderer when I would modify that layout of the view (by hiding labels, etc.)
However, I've hit a snag. Content that appears after I set the TranslateX property doesn't receive any tap events. I believe I might have to reset some tappable area, but I'm not even sure where to begin with that. Does anyone have any suggestions?
I posted this same question in Xamarin's Forums, and someone there answered. For anyone looking, the answer is here: https://forums.xamarin.com/discussion/comment/142914/#Comment_142914
If that link stops working at some point in the future for some reason, the relevant answer is:
Hit testing is done based on the actual frame of the control determined by layout, but translation happens after layout. Therefore hit testing does not take translation into account. If you want a view to be touchable then you should update its layout directly rather than using translation.
I'm using Autolayout to set up quite a lot of labels and buttons in a view. One button needs to be exactly betwwen 2 UILabels and I don't know how to accomplish that. I try to get the position on one label, the position of the other, do the math, etc. But since it's using autolayout, it turns out that the frame.origin.x property is always 0.
So any clues on how to do that?
thanks in advance,
One possible way to do this using the designer is to place a container that will fill the space between the two labels. Just drag a View onto the design surface and make sure that you have the following constraints: Top Space to the top label with default value and Bottom Space to the bottom label with default value.
Once you have this container simply place the button as a child of this container and centre the button horizontally and vertically in the container. That should do it.
This could also be done with code. Let me know if sample code is needed.