端末によってアニメーションが動かない

現在drawable-hdpi、drawable-xhdpi、drawable-xxhdpiフォルダにそれぞれサイズの異なる画像を置いています。そしてアニメーションを行うのですが、なぜかxxhdpiの端末のみアニメーションが動作し、xhdpiの端末は一枚画像が表示されるだけで、hdpiの端末に至っては画像すら表示されません。なぜなのでしょうか？下記にコードを記します。すみませんが、どなたか分かる方がいればよろしくお願いします。

MainActivity

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState); setContentView(R.layout.activity_animation);

        animationImageView = (ImageView)findViewById(R.id.animation_imageview);
        animationImageView.post(new Runnable() {
            @Override
            public void run() {
                if (getIntent().getStringExtra("animType").equals("normal_animation")) {
                    AnimationConfig animationConfig = new AnimationConfig(activity, activity);
                    animationConfig.setAnimationData(animationImageView, 2000, 2000, 50);
                    animationConfig.setAnimationFrame(R.drawable.slot_01);
                    animationConfig.setAnimationFrame(R.drawable.slot_02);
                    animationConfig.setAnimationFrame(R.drawable.slot_03);
                    animationConfig.setAnimationFrame(R.drawable.slot_04);
                    animationConfig.setAnimationFrame(R.drawable.slot_05);
                    animationConfig.setAnimationFrame(R.drawable.slot_06);
                    animationConfig.setAnimationFrame(R.drawable.slot_07);
                    animationConfig.setAnimationFrame(R.drawable.slot_08);
                    animationConfig.setAnimationFrame(R.drawable.slot_09);
                    animationConfig.setAnimationFrame(R.drawable.slot_10);
                    animationConfig.setAnimationFrame(R.drawable.slot_11);
                    animationConfig.setAnimationFrame(R.drawable.slot_12);
                    animationConfig.setAnimationFrame(R.drawable.slot_13);
                    animationConfig.setAnimationFrame(R.drawable.slot_14);
                    animationConfig.setAnimationFrame(R.drawable.slot_15);
                    animationConfig.startAnimation();
                }
            }
        });
    }

AnimationConfig

public class AnimationConfig {
    private Activity mActivity;
    private Context mContext;
    private int mDuration;
    private int mOffset;
    private int mEachImageShowTime;
    private AnimationSet mAnimationSet;
    private ImageView mAnimationImageView;
    private List<Drawable> mFrameList = new ArrayList<Drawable>();

    public AnimationConfig(Activity activity, Context context) {
        mActivity = activity;
        mContext = context;
    }

    public void setAnimationFrame(int image) {
        mFrameList.add(mContext.getResources().getDrawable(image));
    }

    public void setAnimationData(ImageView imageView, int duration, int offset, int eachImageShowTime) {
        mAnimationImageView = imageView;
        mDuration = duration;
        mOffset = offset;
        mEachImageShowTime = eachImageShowTime;
    }

    public void startAnimation() {
        setFrameAnimation(mAnimationImageView, mEachImageShowTime);
        mAnimationImageView.startAnimation(setFadeAnimation(mDuration, mOffset));
    }

    public AnimationSet setFadeAnimation(int duration, final int offset){
        AlphaAnimation fadeIn = new AlphaAnimation(0, 1);
        final AlphaAnimation fadeOut = new AlphaAnimation(1, 0);
        fadeIn.setDuration(duration);

        fadeIn.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
                fadeOut.setStartOffset(offset);
            }

            @Override
            public void onAnimationEnd(Animation animation) {

            }

            @Override
            public void onAnimationRepeat(Animation animation) {

            }
        });

        fadeOut.setDuration(duration);
        fadeOut.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                mAnimationImageView.setVisibility(View.GONE);
                mAnimationSet.setFillAfter(true);
                screenTransition();
            }

            @Override
            public void onAnimationRepeat(Animation animation) {

            }
        });

        mAnimationSet = new android.view.animation.AnimationSet(false); {
            mAnimationSet.addAnimation(fadeIn);
            mAnimationSet.addAnimation(fadeOut);
        }

        return mAnimationSet;
    }

    public void setFrameAnimation(ImageView imageView, int sec) {
        mAnimationImageView = imageView;
        AnimationDrawable anim = new AnimationDrawable();
        for (Drawable frame:mFrameList) {
            anim.addFrame(frame, sec);
        }
        anim.setOneShot(false);
        imageView.setImageDrawable(anim);
    }
}