How to check if imageView fits layout or not?

Question

I've got RelativeLayout, that has 3 Relative Relayouts inside. Second level Relative layout has imageView that is downloaded and may be in different size (height, width). I want to check if imageView fits my layout.

My second level Relative layout looks like this:

<RelativeLayout
    android:id="@+id/tv_show_image_layout"
    android:layout_width="400dp"
    android:layout_height="200dp">

    <ImageView
        android:id="@+id/tvshow_imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:scaleType="matrix"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:src="@drawable/dummy" />

</RelativeLayout>

1) If image is too small, I need to scale him to fit layout height

2) If image is same size as layout, It's ok.

3) If image is too big, I need to add animation to slowly move up and down

For moving animation I use this code and it works fine (if i put hardcoded values):

TranslateAnimation animation = new TranslateAnimation(0.0f, 0.0f,
        -20.0f, 120.0f);          //  new TranslateAnimation(xFrom,xTo, yFrom,yTo)
animation.setDuration(9000);  // animation duration
animation.setRepeatCount(15);  // animation repeat count
animation.setRepeatMode(2);   // repeat animation (left to right, right to left )
//animation.setFillAfter(true);
show_image.startAnimation(animation);  // start animation

But main problem that I can't get correct value of image height to set animation moving ranges.

How should I get this to start animation that moves up/down only in imageView ranges?

Answer 1

Finally, i did what i needed - scaled imageView to fit layout width and started animation to move up/down and show image in this way.

Firstly, xml looks like this. image_layout is child layout at is placed inside other RelativeLayout. It has fixed height (200dp)

<RelativeLayout
    android:id="@+id/image_layout"
    android:layout_width="match_parent"
    android:layout_height="200dp">

    <ImageView
        android:id="@+id/tvshow_imageView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:transformPivotX="0dp"
        android:transformPivotY="0dp"
        android:scaleType="fitXY"
        android:src="@drawable/dummy"/>
</RelativeLayout>

Code looks like this:

    UrlImageViewHelper.setUrlDrawable(show_image, url, R.drawable.dummy, new UrlImageViewCallback() {
        @Override
        public void onLoaded(ImageView imageView, Bitmap loadedBitmap,
                             String url, boolean loadedFromCache) {
            if (!url.equalsIgnoreCase(imageURL)) { 
                show_image.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT));
                int imageViewWidth = dpToPx(imageRelativeLayout.getWidth());
                int imageViewHeight = dpToPx(imageRelativeLayout.getHeight());

                float ratioWidth = (float) imageViewWidth / loadedBitmap.getWidth();
                float animationBounds = loadedBitmap.getHeight() * ratioWidth - imageViewHeight;
                imageView.setScaleX(ratioWidth);
                imageView.setScaleY((ratioWidth));
                if (animationBounds > 0)
                    showImageAnimation(animationBounds);

            }
        }
    });

So I'm downloading image and if download is successful, i scale it to fit and start animation (moving up and down). If download is not successful I show dummy image that I have in drawables. Also it is needed to have dpToPx method to calculate scale ratio.

private int dpToPx(int value) {
    Resources r = InformationFragment.this.getResources();
    return (int) TypedValue.applyDimension(
            TypedValue.COMPLEX_UNIT_DIP,
            value,
            r.getDisplayMetrics()
    );
}

And last method to show animation (need fix on animation speed formula):

private void showImageAnimation(float animationBounds) {
    TranslateAnimation animation = new TranslateAnimation(0.0f, 0.0f,
            0.0f, -animationBounds);
    animation.setDuration((int)animationBounds/20*1000);
    animation.setRepeatCount(Animation.INFINITE);
    animation.setRepeatMode(Animation.REVERSE);     
    show_image.startAnimation(animation);
}