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public class HorizontalRecycleViewHolder extends RecyclerView.ViewHolder {

    private RecyclerView mHorizontalRecyclerView;
    private HorizontalRecyclerViewAdapter mHorizontalRecyclerViewAdapter;

    public HorizontalRecycleViewHolder(View itemView) {
        super(itemView);

        // RecyclerView
        mHorizontalRecyclerView = itemView.findViewById(R.id.horizontal_recycler_view);

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List<Instance> list;
// ↓
ArrayList<Instance> list;

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public class ExoPlayerActivity extends FragmentActivity implements TextureView.SurfaceTextureListener {
    private ExoPlayerActivityBinding binding;
    private SimpleExoPlayer simpleExoPlayer;
    // Apple sample HLS
    private static final String videoUrl = "http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8";
    private Timer playerTimer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

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// Scale Focusが当たった時やTapした時など
// XとYの大きさが100msかけて大きくなる
textView.animate().scaleX(2f).scaleY(2f).setDuration(1000);

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ViewConfiguration.get(context).hasPermanentMenuKey()

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recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);

        int totalCount = recyclerView.getAdapter().getItemCount(); //合計のアイテム数
        int childCount = recyclerView.getChildCount(); // RecyclerViewに表示されてるアイテム数
        RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();

        if (layoutManager instanceof GridLayoutManager) { // GridLayoutManager

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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

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alertDialog.getButton(AlertDialog.BUTTON_NEGATIVE).setEnabled(true); // NegativeButtonを有効に
alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(true); // PoitiveButtonを有効に

alertDialog.getButton(AlertDialog.BUTTON_NEGATIVE).setEnabled(false); // NegativeButtonを無効に
alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(false); // PoitiveButtonを無効に

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public class CircleView extends View {
    private Paint paint;

    public CircleView(Context context, AttributeSet attrs) {
        super(context, attrs);
        paint = new Paint();
    }

    public CircleView(Context context) {
        super(context);

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public class CustomReceiver extends ParsePushBroadcastReceiver {

    @Override
    protected void onPushReceive(Context context, Intent intent) {
        JSONObject pushData = null;
        try {
            pushData = new JSONObject(intent.getStringExtra(KEY_PUSH_DATA));
            Log.d("pushData", pushData.toString());
            String url = pushData.getString("url");
            Uri uri = Uri.parse(url);