Change start of screen animation

Question

I want one of my activites to come from the bottom of the screen when it starts and when it finishes I want it to dissapear back to the bottom. Is it possible to do it? And if yes - any idea how?

Thanks in advance.

Answer 1

I don't know how to change how an activity starts, but to make it close in a certain way, you can override the finish() method and add an animation.

you can call overridePendingTransition after startActivity() to change how the scene changes when you start a new activity.

@Override
    public void finish() {
        super.finish();
        overridePendingTransition(R.anim.slide_in_top, R.anim.slide_out_bottom);
    }

where slide_out_bottom comes in your Res\anim folder and could look like this:

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="@android:integer/config_longAnimTime"
        android:fromYDelta="0"
        android:toYDelta="100%p" />
</set>

This is altered code from a project, so you have to test it.

Answer 2

You should define two animations: enter and exit for your activity

R.anim.enter

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
           android:duration="@android:integer/config_longAnimTime"
           android:fromYDelta="100%p"
           android:toYDelta="0%p"/>

R.anim.exit

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
           android:duration="@android:integer/config_longAnimTime"
           android:fromYDelta="0%p"
           android:toYDelta="100%p"/>

and use this anims in your activity

class TestActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        overridePendingTransition(R.anim.enter, android.R.anim.fade_out)
    }

    override fun finish() {
        super.finish()
        overridePendingTransition(R.anim.exit, android.R.anim.fade_in)
    }

    override fun onBackPressed() {
        finish()
    }
}

Answer 3

you can call overridePendingTransition after startActivity() to change start a new activity animation.

try this line of code

slide_to_left.xml

<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="0" android:toXDelta="-100%p"
           android:interpolator="@android:anim/accelerate_decelerate_interpolator"
           android:duration="@integer/slide_animation_duration"/>

slide_to_right

<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="0" android:toXDelta="100%p"
           android:interpolator="@android:anim/accelerate_decelerate_interpolator"
           android:duration="@integer/slide_animation_duration"/>

MainActivity.java

startActivity(intent); overridePendingTransition(R.anim.slide_from_right, R.anim.slide_to_left);