How do I Change the default animation when changing activity?

Hello I have an application which I can touch to scroll across several screens like the Android Homescreen app.

I have now managed to add a button on each page which changes f开发者_运维百科rom this to a new activity, but the scrolling is left to right and I want it to scroll down when the button is clicked but I can't figure out how to do it.

(This is probably a very noob question - sorry for that.)

Here is my main.java file

public class main extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Button onebutton = (Button)findViewById(R.id.soundsone);
        onebutton.setOnClickListener(new OnClickListener() {

    public void onClick(View v) {
        Intent i = new Intent(main.this, series1button.class);
        startActivity(i);

    }
});


        Button twobutton = (Button)findViewById(R.id.soundstwo);
        twobutton.setOnClickListener(new OnClickListener() {

    public void onClick(View v) {
        Intent i = new Intent(main.this, series2button.class);
        startActivity(i);

    }
});  
        Button threebutton = (Button)findViewById(R.id.soundsthree);
        threebutton.setOnClickListener(new OnClickListener() {

    public void onClick(View v) {
        Intent i = new Intent(main.this, series3button.class);
        startActivity(i);

    }
});        Button fourbutton = (Button)findViewById(R.id.soundsfour);
        fourbutton.setOnClickListener(new OnClickListener() {

    public void onClick(View v) {
        Intent i = new Intent(main.this, series4button.class);
        startActivity(i);

    }
});        Button fivebutton = (Button)findViewById(R.id.soundsfive);
        fivebutton.setOnClickListener(new OnClickListener() {

    public void onClick(View v) {
        Intent i = new Intent(main.this, series5button.class);
        startActivity(i);

    }
});        Button sixbutton = (Button)findViewById(R.id.soundssix);
        sixbutton.setOnClickListener(new OnClickListener() {

    public void onClick(View v) {
        Intent i = new Intent(main.this, series6button.class);
        startActivity(i);

    }
});        Button sevenbutton = (Button)findViewById(R.id.soundsseven);
        sevenbutton.setOnClickListener(new OnClickListener() {

    public void onClick(View v) {
        Intent i = new Intent(main.this, series7button.class);
        startActivity(i);

    }
});        Button eightbutton = (Button)findViewById(R.id.soundseight);
        eightbutton.setOnClickListener(new OnClickListener() {

    public void onClick(View v) {
        Intent i = new Intent(main.this, series8button.class);
        startActivity(i);

    }
});
    }
}

You may refer to the example in apidemos's directory, which uses overridePendingTransition to show custom animation. Also another post related to this topic: Can I change the Android startActivity() transition animation?

You can do it with Android theme API see my answer here How to override the enter activity animation if it is stated by launcher

Here is a good sample. Its great and smooth.I tried. One of answers : Activity transition in Android