Android change layout dynamically

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I did this using only one xml layout. I just put an extra RelativeLayout in it that represents my intro screen then I use a fadeOut Animation on it and then call .setVisibility(View.GONE).

This is part of my main.xml layout file

<RelativeLayout
        android:id="@+id/introLayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
      android:background="#FFFFFF"
    >

        <ImageView
        android:id="@+id/logoImg"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:src="https://stackoverflow.com/questions/4570236/@drawable/logo">
        </ImageView>
    </RelativeLayout>

Then inside my activity I have this:

introLayout = (RelativeLayout) findViewById(R.id.introLayout);
Animation fadeOutAnim = AnimationUtils.loadAnimation(MyActivity.this, R.anim.fadeout);
introLayout.startAnimation(fadeOutAnim);
introLayout.setVisibility(View.GONE);

You could make this run after 3 seconds by putting the startAnimation(), and the setVisibility inside of a runnable and using postDelayed() as markus mentioned. Do consider doing some work while this intro layout is on the screen though, so its not just a 3 second delay for the user. Perhaps check to see if the running version of the application is the current version or not.

EDIT:
You’ll need to add the fadout.xml file to /res/anim/ (create the anim directory if it doesn’t exist). Here is an example.

fadeout.xml

<?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="1.0" android:toAlpha="0.0" android:duration="700" 
       android:fillAfter="true"/>

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