Fresco's custom BitmapMemoryCacheParamsSupplier for Lollipop devices

LollipopBitmapMemoryCacheParamsSupplier.java

public class LollipopBitmapMemoryCacheParamsSupplier implements Supplier<MemoryCacheParams> {

    private ActivityManager activityManager;

    public LollipopBitmapMemoryCacheParamsSupplier(ActivityManager activityManager) {
        this.activityManager = activityManager;
    }

    @Override
    public MemoryCacheParams get() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            return new MemoryCacheParams(getMaxCacheSize(), 1, 1, 1, 1);
        } else {
            return new MemoryCacheParams(
                    getMaxCacheSize(),
                    256,
                    Integer.MAX_VALUE,
                    Integer.MAX_VALUE,
                    Integer.MAX_VALUE);
        }
    }

    private int getMaxCacheSize() {
        final int maxMemory =
                Math.min(activityManager.getMemoryClass() * ByteConstants.MB, Integer.MAX_VALUE);

        if (maxMemory < 32 * ByteConstants.MB) {
            return 4 * ByteConstants.MB;
        } else if (maxMemory < 64 * ByteConstants.MB) {
            return 6 * ByteConstants.MB;
        } else {
            if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.GINGERBREAD) {
                return 8 * ByteConstants.MB;
            } else {
                return maxMemory / 4;
            }
        }
    }

}