i am using frame animation to display set of images one after the other and it works fine , except that the transition between the images is not good .I need smooth transition like ,the first image fades out and the next image fades in.How to achieve such transition in the frame animation.Thanks in advance.
As a workaround you may increase a number of frames in your animation by adding faded images to simulate smooth transition.
Related
I'm building an app where I want to swipe images as though they were photos on a stack. In other words, if I swipe the top image I want it to animate moving in the direction of the swipe and have the next image underneath it visible the whole time. To accomplish this, I'm using a FrameLayout and two ImageView containers. I'm just alternating which one is on top. Meanwhile, as soon as a swipe occurs, the next image is loaded into the ImageView at the back using setBackground(drawable). My problem is that the ImageView at the back doesn't update it's image until I call bringToFront() on it, which means that as the top ImageView is animating, the image underneath is incorrect until the animation completes, at which point it abruptly changes to the correct image. I've tried calling invalidate() on the rear ImageView after setBackground(drawable) but this doesn't work. Anyone have any ideas on how I can get the image to update while it's behind?
UPDATE: Turns out I'm just not very on it today. I was updating the wrong ImageView and because the image loading was being done off the network, there was just enough lag to make me think it was happening after the animation completed.
Sounds to me like you wanna do something like an Image Slider.
There are great libraries existing for this purpose, this one for example:
https://github.com/daimajia/AndroidImageSlider
If you don't wanna use this, here are some tips:
Images on ImageViews are set with setImageDrawable(Drawable)
When your animation starts, set the new Image to your ImageView behind and slide the visible one away.
When the visible ImageViewhas slided away, set it's visibility to GONEand move it behind the second ImageView
Do this for every time a new image is loaded.
This should actually work.
You need a "ViewPager"
https://developer.android.com/training/animation/screen-slide.html
It has all the necessary handles to accommodate "N" number of images - also supports multiple swipe animations - default handlers - efficient memory management - prefetching - you are all in for a feast with this !!
Just make sure you get the "ImageView" in the layout of the "pages" you wish to develop on the "ViewPager".
I have used the code here to animate changing image of an ImageView. But it converts the first image to a white screen and then fade the white screen into the final image (no matter if I use background for ImageView or not).
the same effect is appeared when using slide_out_right and slide_in_left.
Question:
How can I directly go from current Image to a new Image using a custom Animation?
I know that it is possible when using ImageSwitcher but I wanne do it in an ImageView
TransitionDrawable is not the solution because it is applicable only for fade. I wanna use translate or any custom animation.
thanks for any help
Edit:
I think I got the answere, but I am not sure if it an efficient solution:
the white screen is because I am animating the whole ImageView. when it goes out the display what appeared is the Layout background which is white.
To solve the problem, I used two ImageViews and copy the current Image to one and the new image to the another one. animation_in is applied to the imageview containing new image and animation_out to the other one.
I am animating two image views both having the width of the screen. As soon as the first image starts translating in the x direction right(moving off the screen) the second image appears at the far left of the screen filling the gap of the first image. They continue to move in a infinite cycle. It gives the impression of a rolling scenery.
Everything works perfectly except the line where two images meet. That line flicks. I synchronized the
translation of the images by setStartDelay() method. I also tried using AnimationListener. But that merging line of the two images always flicks.
How to solve this issue or what is the best way to do this animation?
I'm trying to create a stacked image gallery, this is a gallery on which all the pictures are overlaying each other in a stack(or pile), for example: a card pile, and the user would be able to see and touch just the upper image and to flip/throw it out of the screen(with translate animation). After throwing the first picture the user will see the second picture that was hidden underneath the first one and so on.
I didn't find a similar gallery in other apps except to "weheartpics" (for Iphone off course)
The line of solution that I'm following now is to create a FrameLayout, adding some overlaying pictures on it, to delete the upper picture when the user touch it(instead of throw it out of screen).
Use StackView, available on API Level 11 and higher.
Why not use a ViewPager and flip through your images from left to right? You can then utilize FragmentStatePagerAdapter to prefetch and cache your images as use flips through these
All right - here's another way:
Add ViewSwitcher with 2 ImageViews
Since you can't use drag and drop library look for some alternatives but generally you want implement dragging the top image. Hopefully that will expose the hidden image but if not you will have to swap images when the drag starts
Implement gesture performed listener to listen for the flick events on the top image
When image is flicked away:
a. Swap image views in ViewSwitcher (if not swapped already for the drag-n-drop)
b. Pre-load next image into hidden ImageView
Otherwise return top image into original location (don't load anything into hidden ImageView)
Ok, the solution for that problem was to use frameLayout and to add to it imageView from the code. It's easy to apply animations on the images and to remove/add them after the animation begins.
I've been doing the following for the last three days without any success.
Suppose I have one image. I have set that image invisible in my XML layout. Now I want to make it visible through animation. Suppose translate animation.
Suppose there is point A and point B. On point B I have already set the image invisible. From point A I want a translate animation effect. And when it completes, the image B becomes visible.
Please help me.
try using ViewFlipper (or ViewAnimator) setting your ImageView as children and defining animation effect for transition