android-animation

问题 I have a ListView(main list) of categories. Each category in this list has a list of subcategories(multiple levels). When any of the main list item is clicked, the same list is repopulated with the subcategory list of the selected item. I want to apply animation to this functionality i.e. when main list item is clicked, the list traverses to the left out of the screen and at the same time the same list with repopulated data comes in from right. So can anyone tell me please if it is possible

问题 is it possible to apply GIF on background of button.I have tried by the following code by taking the reference from this. And my code is below. public class GIFView extends View { Movie movie, movie1; InputStream is = null, is1 = null; long moviestart; public GIFView(Context context) { super(context); is = context.getResources().openRawResource(+R.drawable.cloudinary_animation);// avoid error ( “Expected resource of type raw”)by + movie = Movie.decodeStream(is); } @Override protected void

问题 I have been researching for the same since two days. Here is what i want to achieve. I havent ever tried much animations in android so please clear my approach wherever required. I will have two pages/screens (one visible at a time) Now when I am on page1, on swiping right to left page 2 will be displayed (achieving this is not that difficult) But here is my problem : when I am scrolling to page2 i would like to animate/translate/slide an image from page1 to page2 (without touching the image)

问题 I would like to make a textView disappear after a define amount of time succeeding a change of the text. I am not sure what the best way to proceed is. The problem of using Thread.sleep(2000); , is that it would obviously make the whole UI thread sleep. Using Thread.sleep(2000); inside an AsyncTask seems wrong. In addition, it would lead to problems if the user leave the Activity that needs to be updated by the AsyncTask . There must be a cleaner way to implement that. If you know any: feel

问题 a few days ago, I had a problem with updating an Action Bar menu icon based on the result of an AsyncTask : Updating Action Bar Menu Item due to AsyncTask result without delay Now I realized that this problem is not at all related to an AsyncTask or an Action Bar . The problem occurs as well if I want to change a TextView or any other View . After some time of trial and error I realized that the problem is caused by overridePendingTransition which I use in the Activity which calls the second

问题 a few days ago, I had a problem with updating an Action Bar menu icon based on the result of an AsyncTask : Updating Action Bar Menu Item due to AsyncTask result without delay Now I realized that this problem is not at all related to an AsyncTask or an Action Bar . The problem occurs as well if I want to change a TextView or any other View . After some time of trial and error I realized that the problem is caused by overridePendingTransition which I use in the Activity which calls the second

问题 How can i keep an animation alive while the transitions between activities are occurring? Suppose that i have two activities A and B. Activity B has a "slide in" transition over the activity A. I want to keep a button rotating in my activity A while the transition of B is occurring. My button stop the rotating animation when the Activity B starts the slide over the activity A. I guess it happens because the android switch the UI Thread process to the new activity that is coming and stop what

问题 What i want is that each animation, from the code below, to start with a delay, like a sequence. So i have this code: public void setAnimation(){ View view; String animation = prefs.getString("animations", "Scale"); String interpolator = prefs.getString("interpolators", "Bounce"); Animation animate = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.scale_in); for(int i=0; i<gridView.getChildCount(); i++){ view = gridView.getChildAt(i); view.startAnimation(animate); } } because

问题 Here's a demo of what a page curl animation looks like: http://www.youtube.com/watch?v=aVZHN_o45sg There are a couple of page curl animation libraries: https://github.com/harism/android_page_curl https://github.com/MysticTreeGames/android-page-curl They are meant to work with Bitmap Drawables and not necessarily ViewGroups. If was wondering if anyone has come up with a similar page curl transition for ViewPagers. 回答1: Not a straight way..but, How about creating the bitmap of view group by

问题 Attempting to animate the Android Ring Shape to produce an effect similiar to the shown sequence of images. I have found the Shape Drawable type of Ring. <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="ring" android:innerRadius="75dp" android:thickness="25dp" android:useLevel="false"> Along with the ArcShape(startAngle, sweepAngle) method. ShapeDrawable shape = new ShapeDrawable(new ArcShape(0, 360)); shape.setIntrinsicHeight(100); shape.setIntrinsicWidth(100)