Caches a Parcelable (e.g. a Bitmap) in Parcel memory (i.e. off the heap)

CachedParcelable.java

package io.github.ncruces.utils;

import android.graphics.Bitmap;
import android.os.BadParcelableException;
import android.os.Parcel;
import android.os.Parcelable;

public final class CachedParcelable<T extends Parcelable> implements AutoCloseable {
    private final Parcelable.Creator<T> creator;
    private Parcel cache;

    public CachedParcelable(Parcelable.Creator<T> creator) {
        this.creator = creator;
    }

    public synchronized T get() {
        if (cache == null) return null;
        try {
            cache.setDataPosition(0);
            return creator.createFromParcel(cache);
        } catch (BadParcelableException e) {
            //
        } catch (RuntimeException e) {
            if (creator != Bitmap.CREATOR) throw e;
        }
        return null;
    }

    public synchronized void put(T value) {
        if (cache != null) cache.recycle();
        if (value == null) {
            cache = null;
            return;
        }
        try {
            cache = Parcel.obtain();
            value.writeToParcel(cache, 0);
        } catch (RuntimeException e) {
            if (creator != Bitmap.CREATOR) throw e;
        }
    }

    @Override
    public synchronized void close() {
        if (cache != null) {
            cache.recycle();
            cache = null;
        }
    }
}