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OverridePendingTransition is not working strangely

I'm a beginnner in Xamarin Android programming as well as in Android programming in general. I successfully run the following code with expected effect:
//in the context of the main Activity
StartActivity(someIntent);
OverridePendingTransition(Android.Resource.Animation.SlideInLeft,
Android.Resource.Animation.SlideOutRight);
Now I would like to create my own animations for sliding from left and sliding out from right using XML declaration. I put my XML files under the anim folder with names slideInLeft.xml and slideOutRight.xml respectively. Here are the files' content:
slideInLeft.xml:
<?xml version="1.0" encoding="utf-8" ?>
<translate xmlns:android="http://schemes.android.com/apk/res/android"
android:duration="300"
android:fromXDelta="-100%"
android:toXDelta="0%">
</translate>
slideOutRight.xml:
<?xml version="1.0" encoding="utf-8" ?>
<translate xmlns:android="http://schemes.android.com/apk/res/android"
android:duration="350"
android:fromXDelta="0%"
android:toXDelta="100%">
</translate>
Now the code is just simply changed to this:
//in the context of the main Activity
StartActivity(someIntent);
OverridePendingTransition(Resource.Animation.SlideInLeft,
Resource.Animation.SlideOutRight);
But the animation is not working, the new Activity is just shown after a short of delay (looks like being equal the duration of sliding in which is 300ms).
This is confusing me. I don't know why and how to make this work.

Try changing your xml files to:
slideInLeft
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="-100%p" android:toXDelta="0"
android:duration="350"/>
</set>
AND
slideOutRight
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="0" android:toXDelta="100%p"
android:duration="350"/>
</set>
This should work.

You try to set duration more longer to see the transition :)
slideInLeft.xml:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false" >
<translate android:duration="5000"
android:fromXDelta="-100%"
android:toXDelta="0%"/>
<alpha android:duration="5000"
android:fromAlpha="0.0"
android:toAlpha="1.0" />
</set>
slideOutRight.xml:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false" >
<translate android:duration="5000"
android:fromXDelta="0%"
android:toXDelta="100%"/>
<alpha android:duration="5000"
android:fromAlpha="1.0"
android:toAlpha="0.0" />
</set>

Zoom in animation between activities

I am creating an Android application. I want to open the new activity with zoom in transition. I have some buttons in my current activity. When I click one button new activity will open from the button's position. I try to use the following code. But no transition will appear. I am using the following xml and java codes.
zoom_in.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<scale
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="800"
android:fromXScale="1"
android:fromYScale="1"
android:pivotX="70%"
android:pivotY="70%"
android:toXScale="3"
android:toYScale="3" >
</scale>
</set>
and zoom_out.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<scale
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="800"
android:fromXScale="1.0"
android:fromYScale="1.0"
android:pivotX="70%"
android:pivotY="70%"
android:toXScale="0.5"
android:toYScale="0.5" >
</scale>
</set>
And in my java code I call it like
overridePendingTransition(R.anim.zoom_in,R.anim.zoom_out);
With these code no effect will appear. Could someone please help me to finds out what is the issue?

Try to add the attribute: android:fillAfter="true"
Like this:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true" >
<scale
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="1000"
android:fromXScale="1"
android:fromYScale="1"
android:pivotX="50%"
android:pivotY="50%"
android:toXScale="3"
android:toYScale="3" >
</scale>
</set>

place both animation xml files zoom_in.xml and zoom_out.xml in res/anim
directory and start animation like this :
overridePendingTransition(R.anim.zoom_in,R.anim.zoom_out);

Animate View and keep visible after animation

I have two indicators, each need to be invisible to start. I want them to be visible after animating in, how do i do this? Right now they animate in then disappear, here is the code:
indicator.setVisibility(View.INVISIBLE);
indicator2.setVisibility(View.INVISIBLE);
Animation fadeInAnimation = AnimationUtils.loadAnimation(getActivity(), R.anim.fade_in_view);
indicator.startAnimation(fadeInAnimation);
indicator2.startAnimation(fadeInAnimation);
My xml is:
<?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="1500"
android:repeatCount="0" />
</set>

Try doing this: fadeInAnimation.setFillAfter(true)
or
<?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="1500"
android:repeatCount="0"
android:fillAfter="true"/>
</set>

Center view during simple scale animation

I'm trying to do a scale in/out animation for activity/framgent transition
here are the two animations :
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="500"
android:interpolator="#android:anim/accelerate_decelerate_interpolator" >
<scale
android:fromXScale="80%"
android:fromYScale="80%"
android:toXScale="80%"
android:toYScale="80%" />
<alpha
android:fromAlpha="1.0"
android:toAlpha="0.5" />
</set>
-
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="500"
android:interpolator="#android:anim/accelerate_decelerate_interpolator" >
<translate
android:fromXDelta="100%"
android:fromYDelta="0"
android:toXDelta="0"
android:toYDelta="0" />
</set>
Use it like that :
overridePendingTransition(R.anim.slide_in_right, R.anim.slide_to_behind);
The problem is that the activity doesn't scale down in the center of the screen, it stick to the top/left of the screen
Any idea what wm i missing ? Or doing wrong ?

Add a pivot to your scale animation. Add this on your xml:
android:pivotX="50%"
android:pivotY="50%"
Your scale should look like:
<scale
android:fromXScale="100%"
android:fromYScale="100%"
android:pivotX="50%"
android:pivotY="50%"
android:toXScale="80%"
android:toYScale="80%" />

Animations appear, rotate and disappear

I want to do a multiple animations on my image (appear -> rotate -> disappear). I've got this code:
fade_in.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true"
android:shareInterpolator="false" >
<alpha
android:duration="1"
android:fromAlpha="0"
android:toAlpha="100" />
</set>
fade_out.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true"
android:shareInterpolator="false" >
<alpha
android:duration="1"
android:fromAlpha="100"
android:toAlpha="0" />
</set>
image_rotate.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true"
android:shareInterpolator="false" >
<rotate
android:duration="2500"
android:pivotX="50%"
android:pivotY="50%"
android:toDegrees="120" />
</set>
Also in my java code:
animRotate= AnimationUtils.loadAnimation(context, R.anim.image_rotate);
animRotate.setDuration((long) duration);
fade_in = AnimationUtils.loadAnimation(context, R.anim.fade_in);
fade_out = AnimationUtils.loadAnimation(context, R.anim.fade_out);
AnimationSet s = new AnimationSet(false);
s.addAnimation(fade_in);
s.addAnimation(animRotate);
s.addAnimation(fade_out);
image.startAnimation(s);
but unfortunately it doesn't work correctly...

you have severals errors in your animation xml files:
the duration property is in milliseconds, so 1ms is way too short for a noticeable fade in/fade out animation
the alpha property is a float between 0 et 1, 100 is way too much.
you don't need a set in your xml files if there is only one animation : just add the alpha or rotate tag as a root
So, you should have now these files:
fade_in.xml
<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="1000"
android:fromAlpha="0"
android:toAlpha="1" />
fade_out.xml
<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="1000"
android:fromAlpha="1"
android:toAlpha="0" />
image_rotate.xml
<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="2500"
android:pivotX="50%"
android:pivotY="50%"
android:toDegrees="120" />
Then, in your code, you need a add an offset between each animation. Otherwise, all the animations will be triggered at the same time. Moreover, the fillAfter flag must be set on the root animation object (here, your AnimationSet)
Animation animRotate= AnimationUtils.loadAnimation(context, R.anim.image_rotate);
Animation fade_in = AnimationUtils.loadAnimation(context, R.anim.fade_in);
Animation fade_out = AnimationUtils.loadAnimation(context, R.anim.fade_out);
AnimationSet s = new AnimationSet(false);
s.addAnimation(fade_in);
animRotate.setDuration((long) duration);
animRotate.setStartOffset(fade_in.getDuration());
s.addAnimation(animRotate);
fade_out.setStartOffset(fade_in.getDuration() + animRotate.getDuration());
s.addAnimation(fade_out);
s.setFillAfter(true);
image.startAnimation(s);