Develop Reference

Android Animation From Middle Of The Screen to Top And Out Of View?

I have been trying to find the answer but, have had no success. I need the XML for the animation if the Activity is currently on in the middle of the screen, and for it to slide up and out of view.
Any help would be greatly appretiated!

if I understand what you want correctly, I think you should try something like:
<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="500"
android:fromYDelta="0%"
android:toYDelta="100%" />

Seamless left to right activity transition animation in Android

I have two activities and I want that when the user touches a button on the first activity, the new activity slides in from the left and moves to the right while the first activity does the same, it moves to the right and slides out, so it would give an effect in which the new activity pushes the old one to the right and replaces it.
In order to do that, I have written the following XMLs:
In animation
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:fromXDelta="-100%"
android:toXDelta="0"
android:duration="1250" />
</set>
Out animation
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:fromXDelta="0"
android:toXDelta="-100%"
android:duration="1250" />
</set>
I call the overridePendingTransition(R.anim.anim_in,R.anim.anim_out); function in the onCreate method of the new activity. In the resulting effect, the new activity moves from the left to right correctly, but the first, older activity moves into the opposite direction; it moves to the left. I want to revert the moving direction of this first activity. How can I do that, is there a XML property which serves to this purpose?

Change
android:toXDelta="-100%"
to
android:toXDelta="100%"
in the out animation.

Android, make an animation text scroll up on the screen like first part of Star Wars

I'm trying to create an animation in my android app.
I want the animation like the credits of Star Wars the movie, where a text goes up gradually. If there is another way to do it than I'd like to know.

Try this :
Put this piece of code in an xml file in res/anim/animationfile.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#android:anim/linear_interpolator" >
<translate
android:duration="5000" ---> set your time here
android:fromYDelta="-100%p"
android:toYDelta="100%p" /> </set>
Now to set the animation, do this :
Animation translatebu= AnimationUtils.loadAnimation(this, R.anim.animationfile);
tv.setText("Some text view.");
tv.startAnimation(translatebu);
This is how you do it roughly.

here is a very good example of animation for u
http://android-er.blogspot.com/2012/02/various-effect-of-interpolator-in.html

Android fade in , fade out animation issue

I'm trying to customize the animation between two activities by fading out the splashscreen and fading in the main activity.
I trying two solutions, one with fade_in.xml and fade_out.xml where controlling alphas (0-1 , 1-0) and calling everything with overridePendingTransaction(fade_in, fade_out) and one with fade and hold like ni api demo (api/app/animation/fade);
The main problem is that the splashscreen (first animation ) is losing its alpha while sliding to the right as well and the second activity is appearing as wanted.
How is possible to lock the splashscreen to its original position and just making it fading out?
fade
<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#android:anim/accelerate_interpolator"
android:fromAlpha="0.0" android:toAlpha="1.0"
android:duration="#android:integer/config_longAnimTime" />
hold
<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#android:anim/accelerate_interpolator"
android:fromXDelta="0" android:toXDelta="0"
android:duration="#android:integer/config_longAnimTime" />
overridePendingTransition(R.anim.fade, R.anim.hold);

You can use the callback for .fadeOut().

Using fade in animation for a view

I want to have a View that initially is invisible and when I press a button, it becomes visible with a fade in animation. I'm using the AlphaAnimation for the fading effect. The problem is that if I make the view invisible the animation can't be seen.

Suppose you have an ImageView named imageView and an animation file your_fade_in_anim.xml inside your res\anim\ folder:
ImageView imageView = (ImageView) findViewById(R.id.imageView);
Animation fadeInAnimation = AnimationUtils.loadAnimation(this, R.anim.your_fade_in_anim);
// Now Set your animation
imageView.startAnimation(fadeInAnimation);
Your XML
<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha
android:fromAlpha="0.0"
android:toAlpha="1.0"
android:interpolator="#android:anim/accelerate_interpolator"
android:duration="[duration (in milliseconds)]"
android:repeatCount="infinite" />
</set>
Replace the brackets with your actual duration.

Provide an AnimationListener to the Animation and make the View visible as soon as the Animation starts.
http://developer.android.com/reference/android/view/animation/Animation.AnimationListener.html

Instead of the infinite repeat count and hiding/viewing your View, I suggest to just not repeat the animation and initially start with the alpha channel set to maximum. Then you can use:
<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha
android:fromAlpha="0.0"
android:toAlpha="1.0"
android:interpolator="#android:anim/accelerate_interpolator"
android:duration="[duration (in milliseconds)]"
android:repeatCount="0" />
</set>
And you're done. No need for a Listener, hiding or showing. Just as simple.