Saving values from a (Float) ArrayList into a Bundle - arrays

Question

I'm writing a game using Surfaceview and have a question relating to saving Data into a Bundle.
Initially, I had an arraylist which stored the Y co-ordinates (in the form of Integers) of sprites that will move only up and down. Declared as:
static ArrayList<Integer> ycoordinates = new ArrayList<Integer>();
I saved them to a Bundle using the following:
myBundle.putIntegerArrayList("myycoordinates", ycoordinates);
And restored them using this:
ycoordinates.addAll(savedState.getIntegerArrayList("ycoordinates"));
This all worked perfectly. However, I've had to change the whole coordinates system so it's based on Delta time to allow my sprites to move at a uniform speed across different screens. This is, again, working perfectly.
However, as a result of this change, I now have to store these values as floats rather than integers.
So, I am declaring as:
static ArrayList<Float> ycoordinates = new ArrayList<Float>();
So that's the background, now my question is, how do I store and restore values from a Float Arraylist? There doesn't seem to be a "putFloatArrayList" or "getFloatArrayList".
(I've used an Arraylist rather than an Array as the number of sprites needs to be dynamic).
Any help would be appreciated.
Many thanks

Answer 1

I've written a couple of simple methods to convert between List and float[]. You can use the Bundle putFloatArray() and getFloatArray on the float[].
import java.util.ArrayList;
import java.util.List;
public class Test {
public static void main(String[] args){
List<Float> in = new ArrayList<Float>();
in.add(3.0f);
in.add(1f);
in.add((float)Math.PI);
List<Float>out = toList(toArray(in));
System.out.println(out);
}
public static float[] toArray(List<Float> in){
float[] result = new float[in.size()];
for(int i=0; i<result.length; i++){
result[i] = in.get(i);
}
return result;
}
public static List<Float> toList(float[] in){
List<Float> result = new ArrayList<Float>(in.length);
for(float f : in){
result.add(f);
}
return result;
}
}