How to change the default transition between activities?

In android the default transition between activities is to slide from left to right.
But with custom animations we can change that.

First create a folder inside the res/drawable folder called “anim”.
Then create a file named “fade.xml” and copy this code into it.

<?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" />

create another file named “hold.xml” in the same place
hold.xml.

<?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" />

activity_animation.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:padding="4dip"
    android:gravity="center_horizontal"
    android:layout_width="fill_parent" android:layout_height="fill_parent">

    <TextView
        android:layout_width="fill_parent" android:layout_height="wrap_content"
        android:layout_weight="0"
        android:paddingBottom="4dip"
        android:text="Sample Animation"/>

    <Button android:id="@+id/fade_animation"
        android:layout_width="wrap_content" android:layout_height="wrap_content"
        android:text="fade In">
        <requestFocus />
    </Button>
</LinearLayout>

Now the main java file.

package pack.coderzheaven;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class ActivityAnimation extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_animation);

        Button button = (Button)findViewById(R.id.fade_animation);
        button.setOnClickListener(mFadeListener);
    }

    private OnClickListener mFadeListener = new OnClickListener() {
        public void onClick(View v) {
            startActivity(new Intent(ActivityAnimation.this, SecondClass.class));
            overridePendingTransition(R.anim.fade, R.anim.hold);
        }
    };
}

package pack.coderzheaven;

import android.app.Activity;
import android.os.Bundle;

public class SecondClass extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Second Class"
    />
</LinearLayout>