android-animation

问题 I am trying to play a set of animations sequentially using the Animator set. Everything is working except for the alpha animation( set1 ). It is changing from 0.25f to 1 but it is not fading throughout the animation and at the end of the set1 animation it is changing from 0.25 to 1 and not taking in consideration the setDuration (as a result I am not getting the fade in effect). So I don't have the fade in effect... When I do this animation by itself the fade in effect is there....Any ideas?

问题 I am using the new KitKat Transitions API on Android. I have created two Scene objects using two layouts. I animate from Scene 1 to Scene 2 inside a Fragment . I want to automatically move back to the previous Scene when the user presses the back button. Is there some kind of built-in backstack mechanism when using Transitions , or do I have to roll my own? It is easy enough to call TransitionManager.go(scene1) , but I really do not want to implement an onBackPressed() listener in all my

问题 I'm developing an Android application to read "electric meters". The user enters the counter - the application calculates the consumption and sends it to a server. The representation of the counter should look like a old electricity meters old electricity meter I've already integrated the counter-numbers as images. I will have an animation that if the user enters a number (keyboard) then the relevant section begins to rotate to the correct number position. For example: The user enters the

问题 I have a RecyclerView with Expandable Child Views, when the child ViewGroup is clicked it inflates an amount of views animating the ViewGroup height from 0 to the measured viewgroup height, like the following gif: The problem is: I'm calling smoothScrollToPosition on recyclerView, it smooth scroll to the view position, but it considers the current view height, which is still not expanded, in the above gif i'm touching on the under view of the recyclerview, which dont scroll to position

问题 I have a RecyclerView with Expandable Child Views, when the child ViewGroup is clicked it inflates an amount of views animating the ViewGroup height from 0 to the measured viewgroup height, like the following gif: The problem is: I'm calling smoothScrollToPosition on recyclerView, it smooth scroll to the view position, but it considers the current view height, which is still not expanded, in the above gif i'm touching on the under view of the recyclerview, which dont scroll to position

问题 when i touch whereever in the screen that point will be glow(nothing but like a flash or glittering) for some time. how to do that? any example or idea?? i have to implement to put buttons on it. exactly when i touch the screen it will glow some time and then the button will appear on the point where i touched. 回答1: Your going to have to create a custom view and override ontouchevent and draw. Here's a very simple example. you can reference a custom view in an xml layout if you use the

问题 I'd like to animate the transition between two fragments which is performed thanks to FragmentTransaction.replace() . I'd like to specify my custom animation in a XML file. What is the difference between calling FragmentTransaction.setCustomAnimations() and FragmentTransaction.setTransitionStyle() ? Thanks. 回答1: setCustomAnimations(int, int, int, int) allows you to specify your animation resources directly. If you use setTransitionStyle(int), on the other hand, you'll have to specify them by

问题 I have some png sequences in Android, that I need to animation their x and y postion translation from the top to the bottom of the screen. While the animation is occurring, I need the objects to receive click events. I understand this doesn't work really well in Android version before 3.0, since the display of the object is in a different place than the actual object so you don't get the click events mid-animation (which is what I need) since you aren't clicking on the object, only on the

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . These two terms occur in many places but what exactly do they mean in the context of Android animations? 回答1: The pivotX and pivotY is the central point of the animation. So for example if you want to do Zoom In animation you can use this <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . These two terms occur in many places but what exactly do they mean in the context of Android animations? 回答1: The pivotX and pivotY is the central point of the animation. So for example if you want to do Zoom In animation you can use this <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas