benbaxter

public class PlaybackSeekMetadataDataProvider extends PlaybackSeekDataProvider {
  //…
  public PlaybackSeekMetadataDataProvider(Context context, 
                                          String videoUrl, 
                                          long interval) {
    mContext = context;
    mVideoUrl = videoUrl;

    MediaMetadataRetriever retriever = new MediaMetadataRetriever();
    retriever.setDataSource(mVideoUrl, new HashMap<>());

benbaxter

@Override
public void getThumbnail(int index, final ResultCallback callback) {
  // Step 1. Get position from the index.
   long position = getSeekPositions()[index];

   // Step 2. Retrieve thumbnail in the background to not block the UI thread.
   retrieveThumbnailForPosition(position, index, (bitmap) -> {
       // Step 3. Return the thumbnail to be presented in the UI.
       callback.onThumbnailLoaded(bitmap, index);
   });

benbaxter

@Override
public void getThumbnail(int index, ResultCallback callback) {
   LoadBitmapAsyncTask task = new LoadBitmapAsyncTask(index, callback);
   task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
}

class LoadBitmapAsyncTask extends AsyncTask<Void, Void, Bitmap> {

       final int mIndex;
       final ResultCallback mResultCallback;

benbaxter

@Override
public void getThumbnail(int index, ResultCallback callback) {
  LoadBitmapAsyncTask task = mTasks.get(index);
  if (task == null) {
    task = new LoadBitmapAsyncTask(index, callback);
    mTasks.put(index, task);
    task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
  }
}

benbaxter

@Override
public void reset() {
   for (int i = 0; i < mTasks.size(); i++) {
       LoadBitmapAsyncTask task = mTasks.get(i);
       task.cancel(true);
   }
   mTasks.clear();
}

benbaxter

/*
 * Copyright (C) 2017 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

benbaxter

public abstract class DiffCallback<Value> {

   public abstract boolean areItemsTheSame(@NonNull Value oldItem, 
                                           @NonNull Value newItem);

   public abstract boolean areContentsTheSame(@NonNull Value oldItem,
                                              @NonNull Value newItem);

   @SuppressWarnings("WeakerAccess")
   public Object getChangePayload(@NonNull Value oldItem, @NonNull Value newItem) {

benbaxter

val diffCallback = object : DiffCallback<DummyItem>() {

   override fun areItemsTheSame(oldItem: DummyItem, newItem: DummyItem): Boolean =
           oldItem.id == newItem.id

   override fun areContentsTheSame(oldItem: DummyItem, newItem: DummyItem): Boolean =
           oldItem == newItem
}

itemsAdapter.setItems(randomItems(), diffCallback)

benbaxter

public void setItems(final List itemList, final DiffCallback callback) {
   if (callback == null) {
       // shortcut when DiffCallback is not provided
       mItems.clear();
       mItems.addAll(itemList);
       notifyChanged();
       return;
   }
   //...
}

benbaxter

# This is for ATV only
alias adb-dev-options='adb shell am start -n com.android.tv.settings/.system.development.DevelopmentActivity'
# For mobile use:
#alias adb-dev-options='adb shell am start -n com.android.settings/.DevelopmentSettings'

# Animations
alias animations-off='adb shell settings put global animator_duration_scale 0'
alias animations-slow='adb shell settings put global animator_duration_scale 10'
alias animations-normal='adb shell settings put global animator_duration_scale 1'
alias animations-fast='adb shell settings put global animator_duration_scale 0.5'