Dynamic scale animation on replacing Fragment

Question

I want to replace a fragment with animation but it has to be dynamic every time, i.e. it will start from the point where I will click on the screen but fragmentTransaction.setCustomAnimations method uses the predefined animation defined in anim folder like this:

fragmentTransaction.setCustomAnimations(R.anim.bounce, R.anim.bounce);

I create object of ScaleAnimation to meet my need like this:

ScaleAnimation animation = new ScaleAnimation(fromX,ToX,fromY,toY,pivitX,pivotY);
animation.setDuration(500);

fragmentTransaction.setCustomAnimations method does not accept scaleAnimation it only accepts int. So how to attain dynamic animation while replacing fragment.

Answer 1

You can create custom animation sets and use them.

Create an .xml file and put it in 'res/anim' folder and then use its resource id in code:

fragmentTransaction.setCustomAnimations(R.anim.your_animation, R.anim.your_animation);

Here is and example of the animation:

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

<translate
    android:duration="@android:integer/config_shortAnimTime"
    android:fromXDelta="0"
    android:fromYDelta="0"
    android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:toXDelta="-10%p"
    android:toYDelta="1%p"/>

<scale
    android:duration="@android:integer/config_shortAnimTime"
    android:fromXScale="1.0"
    android:fromYScale="1.0"
    android:toXScale="0.98"
    android:toYScale="0.98"/>

<translate
    android:duration="@android:integer/config_shortAnimTime"
    android:fromXDelta="-10%p"
    android:fromYDelta="1%p"
    android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:startOffset="@android:integer/config_shortAnimTime"
    android:toXDelta="100%p"
    android:toYDelta="5%p"/>

<scale
    android:duration="@android:integer/config_shortAnimTime"
    android:fromXScale="0.98"
    android:fromYScale="0.98"
    android:startOffset="@android:integer/config_shortAnimTime"
    android:toXScale="0.9"
    android:toYScale="0.9"/>
</set>