Question

long time listener, first time caller…

I am creating a splash screen derived from Activity called SplashBase that is placed inside a shared project. The layout is the following:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:id="@+id/linlytSplash"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
>
   <ImageView
      android:id="@+id/imgvwSplash"
      android:src="@drawable/splashscreen"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
   ></ImageView>

   <LinearLayout
      android:id="@+id/linlytProgress"
      android:orientation="horizontal"
      android:layout_width="wrap_content"
      android:layout_height="fill_parent"
      android:layout_gravity="center"
      android:gravity="center"
   >
      <ProgressBar
         android:id="@+id/progbarProgress"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginRight="5dp"
      ></ProgressBar>
      <TextView
         android:id="@+id/txtvwProgress"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dip"
         android:gravity="center_vertical"
         android:text="@string/loading_ellipsis"
         android:textStyle="bold"
      ></TextView>

   </LinearLayout>

</LinearLayout>

I am loading the animations like this :

  Animation animation = AnimationUtils.loadAnimation(this, R.anim.splashscreen_anim);
  animation.setAnimationListener(new AnimationListener() {
     public void onAnimationEnd(Animation animation) {
        // Advance to the next screen.
        if (null != m_intentToLaunch) {
           startActivity(m_intentToLaunch);
        }

        finish();
     }
  });

  animation.setStartTime(AnimationUtils.currentAnimationTimeMillis() + 1000);

I have a derived class called Splash which lives in my main project.

I’ve had this splash screen for a long time now, the animation has always worked. My ImageView is shown for 2 seconds, and then animates and disappears before calling finish() and loading the next Activity.

I am now adding a ProgressBar which only be shown for the first second (not exactly, but it’s clearer if I explain it that way). For some reason, after I hide the ProgressBar, the animation no longer works on the ImageView. When I call

findViewById(R.id.linlytProgress).setVisibility(View.INVISIBLE);

the animation no longer works. In order to test I have placed the following calls:

findViewById(R.id.txtvwProgress).setVisibility(View.INVISIBLE);

and then

findViewById(R.id.progbarProgress).setVisibility(View.INVISIBLE);

When I hide only the TextView, things work as expected. When I hide the ProgressBar, boom, my ImageView no longer animates. I’m at a loss.

Answer 1

I finally found the answer to my own question. The view needed to be invalidated.

findViewById(R.id.imgvwSplash).invalidate();

et voila! It works exactly as expected, and so far on every platform that I tried it on.

Thanks to everyone who took a look at the question.

-I_Artist