Scale a view and its layered subviews relatively

Question

(This is somewhat a follow-up on Android: How do you scale multiple views together?)

My task is to port an iPhone / iPad app on Android that consists of a simple ima

Answer 1

I lately needed to do something similar, i also had to port a IPad app to android, the screen had many images that had to be in specific locations.

I solved this slightly differently, absolute layout, and run through all the views and set the coordinated and size of each.

//This gets the scale of the screen change:
DisplayMetrics displaymetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
Drawable image = getResources().getDrawable(R.drawable.background_image);
float scaleW = displaymetrics.widthPixels / (float)image.getIntrinsicWidth();
float scaleH = displaymetrics.heightPixels / (float)image.getIntrinsicHeight();

//And this scales each view accordingly:
for(int i = 0; i < mainLayout.getChildCount(); i++)
{
    View v = mainLayout.getChildAt(i);
    v.setLayoutParams(new AbsoluteLayout.LayoutParams(
            Math.round(scaleW * v.getMeasuredWidth()),
            Math.round(scaleH * v.getMeasuredHeight()),
            Math.round(scaleW * ((AbsoluteLayout.LayoutParams)v.getLayoutParams()).x),
            Math.round(scaleH * ((AbsoluteLayout.LayoutParams)v.getLayoutParams()).y)));
}