[android-developers] Re: setLayoutParams stops working

Full relevant code:

@Override

protected void onScrollChanged(int l, int t, int oldl, int oldt) {

super.onScrollChanged(l, t, oldl, oldt);

//Log.v("SCROLL", String.valueOf(l));

adjustImageSizes();

}

private void adjustImageSizes(){

int width = getWidth();

int[] views =  { R.id.imageView1, R.id.imageView2, R.id.imageView3, R.id.imageView4, R.id.imageView5 };

for(int r : views){

ImageView iv = (ImageView) findViewById(r);

int[] location = new int[2];

iv.getLocationOnScreen(location);

int imageViewCenter = location[0] + 108 / 2; // This can be calculated for each imageView that is on screen

if(imageViewCenter < 0){

imageViewCenter = 0;

}

if(imageViewCenter > width){

imageViewCenter = width;

}

int scrollerCenter = (getWidth() - getPaddingLeft() - getPaddingRight()) / 2 + getPaddingLeft();

float offset = Math.abs(scrollerCenter - imageViewCenter);

float ratio = ( offset / ( width / 2)  );

// Scale the size.

float scale = .5f + (1.0f - ratio) / 2;

if (scale <= 0) {

scale = 0.1f;

}

int iWidth = (int) (scale * 108 * getResources().getDisplayMetrics().density);

int iHeight = (int) (scale * 56 * getResources().getDisplayMetrics().density);

if(r == R.id.imageView5){

//Log.v("LOCATION", String.valueOf(imageViewCenter) );

//Log.v("OFFSET", String.valueOf(offset));

//Log.v("RATIO", String.valueOf(ratio));

//Log.v("SCALE", String.valueOf(scale));

Log.v("DIMS", String.valueOf(iWidth) + ":" + String.valueOf(iHeight) );

}

LinearLayout.LayoutParams layoutParams = (android.widget.LinearLayout.LayoutParams) iv.getLayoutParams();

layoutParams.height = iHeight;

layoutParams.width = iWidth;

iv.setLayoutParams(layoutParams);

//iv.getLayoutParams().height = iHeight;

//iv.getLayoutParams().width = iWidth;

}

}

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