| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.android.test.uibench; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.graphics.Color; |
| import android.graphics.drawable.GradientDrawable; |
| import android.graphics.drawable.InsetDrawable; |
| import androidx.recyclerview.widget.LinearLayoutManager; |
| import androidx.recyclerview.widget.RecyclerView; |
| import android.view.View; |
| import android.view.ViewGroup; |
| |
| import com.android.test.uibench.recyclerview.RvCompatListActivity; |
| |
| import java.util.ArrayList; |
| import java.util.concurrent.TimeUnit; |
| |
| public class SlowNestedRecyclerViewActivity extends RvCompatListActivity { |
| private static final int OUTER_ITEM_COUNT = 100; |
| private static final int INNER_ITEM_COUNT = 20; |
| |
| private static final long INNER_ITEM_CREATE_NS = TimeUnit.MILLISECONDS.toNanos(6); |
| private static final long INNER_ITEM_BIND_NS = TimeUnit.MILLISECONDS.toNanos(1); |
| private static final long INNER_ITEM_ATTACH_NS = TimeUnit.MILLISECONDS.toNanos(1); |
| |
| private static final long OUTER_ITEM_CREATE_NS = TimeUnit.MILLISECONDS.toNanos(3); |
| private static final long OUTER_ITEM_BIND_NS = TimeUnit.MILLISECONDS.toNanos(1); |
| private static final long OUTER_ITEM_ATTACH_NS = TimeUnit.MILLISECONDS.toNanos(1); |
| |
| private SizeData mSizeData; |
| |
| private static class SizeData { |
| final int innerItemWidth; |
| final int innerItemHeight; |
| final int headerHeight; |
| |
| SizeData(Resources resources) { |
| innerItemWidth = (int) (resources.getDisplayMetrics().widthPixels / 3.3f); |
| innerItemHeight = (int) (innerItemWidth * 1.6f); |
| headerHeight = (int) (resources.getDisplayMetrics().heightPixels * 0.5f); |
| } |
| } |
| |
| private SizeData getSizeData(Resources resources) { |
| if (mSizeData == null) { |
| mSizeData = new SizeData(resources); |
| } |
| return mSizeData; |
| } |
| |
| @Override |
| protected RecyclerView.LayoutManager createLayoutManager(Context context) { |
| return new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false); |
| } |
| |
| @Override |
| protected RecyclerView.Adapter createAdapter() { |
| return new OuterAdapter(); |
| } |
| |
| private class InnerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { |
| @Override |
| public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { |
| final long start = System.nanoTime(); |
| |
| final float density = parent.getResources().getDisplayMetrics().density; |
| View view = new View(parent.getContext()) { |
| @Override |
| protected void onAttachedToWindow() { |
| final long start = System.nanoTime(); |
| super.onAttachedToWindow(); |
| while (System.nanoTime() - start < INNER_ITEM_ATTACH_NS); |
| } |
| }; |
| |
| SizeData sizeData = getSizeData(parent.getResources()); |
| view.setMinimumWidth(sizeData.innerItemWidth); |
| view.setMinimumHeight(sizeData.innerItemHeight); |
| |
| GradientDrawable bg = new GradientDrawable(); |
| bg.setCornerRadius(10 * density); |
| bg.setColor(Color.BLACK); |
| final int pad = (int)(10 * density); |
| view.setPadding(pad, pad, pad, pad); |
| view.setBackgroundDrawable(new InsetDrawable(bg, pad)); |
| RecyclerView.ViewHolder holder = new RecyclerView.ViewHolder(view) {}; |
| |
| while (System.nanoTime() - start < INNER_ITEM_CREATE_NS); |
| return holder; |
| } |
| |
| @Override |
| public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { |
| final long start = System.nanoTime(); |
| while (System.nanoTime() - start < INNER_ITEM_BIND_NS); |
| } |
| |
| @Override |
| public int getItemCount() { return INNER_ITEM_COUNT; } |
| } |
| |
| private class OuterAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { |
| static final int TYPE_HEADER = 0; |
| static final int TYPE_RECYCLER = 1; |
| |
| ArrayList<InnerAdapter> mAdapters = new ArrayList<>(); |
| RecyclerView.RecycledViewPool mSharedPool = new RecyclerView.RecycledViewPool(); |
| |
| OuterAdapter() { |
| for (int i = 0; i < OUTER_ITEM_COUNT; i++) { |
| mAdapters.add(new InnerAdapter()); |
| } |
| } |
| |
| @Override |
| public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { |
| SizeData sizeData = getSizeData(parent.getResources()); |
| if (viewType == TYPE_HEADER) { |
| View view = new View(parent.getContext()); |
| view.setMinimumHeight(sizeData.headerHeight); |
| return new RecyclerView.ViewHolder(view) {}; |
| } else { |
| final long start = System.nanoTime(); |
| |
| RecyclerView rv = new RecyclerView(parent.getContext()) { |
| @Override |
| protected void onAttachedToWindow() { |
| final long start = System.nanoTime(); |
| super.onAttachedToWindow(); |
| while (System.nanoTime() - start < OUTER_ITEM_ATTACH_NS); |
| |
| } |
| }; |
| |
| rv.setLayoutParams(new RecyclerView.LayoutParams( |
| ViewGroup.LayoutParams.MATCH_PARENT, sizeData.innerItemHeight)); |
| rv.setLayoutManager(new LinearLayoutManager(parent.getContext(), |
| LinearLayoutManager.HORIZONTAL, false)); |
| rv.setRecycledViewPool(mSharedPool); |
| RecyclerView.ViewHolder holder = new RecyclerView.ViewHolder(rv) {}; |
| |
| while (System.nanoTime() - start < OUTER_ITEM_CREATE_NS); |
| return holder; |
| } |
| } |
| |
| @Override |
| public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { |
| if (getItemViewType(position) == TYPE_RECYCLER) { |
| final long start = System.nanoTime(); |
| ((RecyclerView)holder.itemView).setAdapter(mAdapters.get(position)); |
| while (System.nanoTime() - start < OUTER_ITEM_BIND_NS); |
| } |
| } |
| |
| @Override |
| public int getItemViewType(int position) { |
| return position == 0 ? TYPE_HEADER : TYPE_RECYCLER; |
| } |
| |
| @Override |
| public int getItemCount() { |
| return mAdapters.size(); |
| } |
| } |
| } |