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How to play YouTube videos in WebView on Amazon Fire TV?

I want to play YouTube videos on WebView for Amazon Fire TV.

There is currently no official API for playing YouTube videos in Fire OS ( link ), so I tried to get it to work with Android WebView. In the documentation

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I wrote a class to play YouTube videos on Fire TV, and is also working on a kindling fire. As you know, Youtube does not have an official api, and we need to resort to using web views for this. The class I inserted here contains a lot of material besides webviews that may interest you, so I’ll explain. First of all, you will find that the YouTube web view will continue to play when you leave your activity, if you do not report it to stop. Therefore, people who offer solutions to other people should use the onPause and pauseTimers methods to shut the video down. But there is an unpleasant problem that Amazon is imposing on us, and that audio and video resources do not apply to the rest of the operating system (this is not a problem with Google Android Lolipop, i.e. Nexus Player).When resources are stored in your application, the main video will not play, and amazon will not allow your application in the store. They know well that we need to use webviews for youtube, so they gave us some advice:

: Android WebView HTML ?
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package com.ohiovr.modules.youtube;


import android.app.Activity;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.graphics.Point;
import android.media.AudioManager;
import android.os.Bundle;
import android.os.SystemClock;
import android.util.Log;
import android.view.Display;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import java.util.Timer;
import java.util.TimerTask;



public class youtubeKindleWebView extends Activity {


    String StringYoutubeUrl;
    WebView webView;

    AFChangeListener hocusFocus;
    private String videoBlanker = "http://ohiovr.com/church_files/blank.mp4";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_generic_web_view);

        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

        webView = (WebView) findViewById(R.id.webView);
        WebSettings webSettings = webView.getSettings();
        webSettings.setBuiltInZoomControls(true);
        webSettings.setJavaScriptEnabled(true);
        webSettings.setAppCacheEnabled(false);
        webSettings.setLoadWithOverviewMode(true);
        webSettings.setUseWideViewPort(true);
        //I used this line in an old and now not used live stream implimentation. It works so I didn't remove it. But you may 
        //want to see if it is nessisary:
        webSettings.setUserAgentString("Mozilla/5.0(iPhone;U;CPUiPhoneOS4_0likeMacOSX;en-us)AppleWebKit/532.9(KHTML,likeGecko)Version/4.0.5Mobile/8A293Safari/6531.22.7");


        webView.setWebViewClient(new Callback()); 
        webView.setWebChromeClient(new WebChromeClient());


    }

    class AFChangeListener implements AudioManager.OnAudioFocusChangeListener {
        @Override
        public void onAudioFocusChange(int focusChange) {
            if (focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT) {
                // mp.pause();
            } else if (focusChange == AudioManager.AUDIOFOCUS_GAIN) {
                //  mp.start();
            } else if (focusChange == AudioManager.AUDIOFOCUS_LOSS) {
                //  mp.stop();
            }
        }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        boolean handled = false;

        switch (keyCode) {
            case KeyEvent.KEYCODE_DPAD_CENTER:
                forceAClick();
                break;
            case KeyEvent.KEYCODE_BUTTON_A:
                // ... handle selections
                handled = true;
                break;
            case KeyEvent.KEYCODE_DPAD_LEFT:
                // ... handle left action
                handled = true;
                break;
            case KeyEvent.KEYCODE_DPAD_RIGHT:
                // ... handle right action
                handled = true;
                break;
        }
        return handled || super.onKeyDown(keyCode, event);
    }


    public void forceAClick() {

        Timer timer = new Timer();
        timer.schedule(new TimerTask() {
            @Override
            public void run() {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Display display = getWindowManager().getDefaultDisplay();
                        Point size = new Point();
                        display.getSize(size);
                        int width = size.x;
                        int height = size.y;


                        // Obtain MotionEvent object
                        long downTime = SystemClock.uptimeMillis();
                        long eventTime = SystemClock.uptimeMillis() + 100;
                        float x = width / 2;
                        float y = height / 2;
                        // List of meta states found here: developer.android.com/reference/android/view/KeyEvent.html#getMetaState()
                        int metaState = 0;
                        MotionEvent motionEvent = MotionEvent.obtain(
                                downTime,
                                eventTime,
                                MotionEvent.ACTION_DOWN,
                                x,
                                y,
                                metaState
                        );

                        webView.setOnTouchListener(new View.OnTouchListener() {
                            @Override
                            public boolean onTouch(View v, MotionEvent event) {
                                Log.d("on touch", "touched down");
                                return false;
                            }
                        });

                        webView.dispatchTouchEvent(motionEvent);
                    }
                });
            }
        }, 1);

        timer.schedule(new TimerTask() {
            @Override
            public void run() {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Display display = getWindowManager().getDefaultDisplay();
                        Point size = new Point();
                        display.getSize(size);
                        int width = size.x;
                        int height = size.y;


                        // Obtain MotionEvent object
                        long downTime = SystemClock.uptimeMillis();
                        long eventTime = SystemClock.uptimeMillis() + 100;
                        float x = width / 2;
                        float y = height / 2;
                        // List of meta states found here: developer.android.com/reference/android/view/KeyEvent.html#getMetaState()
                        int metaState = 0;
                        MotionEvent motionEvent = MotionEvent.obtain(
                                downTime,
                                eventTime,
                                MotionEvent.ACTION_UP,
                                x,
                                y,
                                metaState
                        );

                        webView.setOnTouchListener(new View.OnTouchListener() {
                            @Override
                            public boolean onTouch(View v, MotionEvent event) {
                                Log.d("on touch", "touched up");
                                return false;
                            }
                        });

                        webView.dispatchTouchEvent(motionEvent);


                    }
                });
            }
        }, 120);


        AudioManager am = (AudioManager) this.getSystemService(Context.AUDIO_SERVICE);
// Request audio focus for playback
        hocusFocus = new AFChangeListener();
        int result = am.requestAudioFocus(hocusFocus, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
    }


    @Override
    public void onResume() {
        super.onResume();
        webView.onResume();
        webView.resumeTimers();
        StringYoutubeUrl = "https://www.youtube.com/embed/" + getIntent().getStringExtra("youtubeID");
        webView.loadUrl(StringYoutubeUrl);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

    }


    private class Callback extends WebViewClient {  //this is important for some reason. don't remove!
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            return (false);
        }
    }


    @Override
    protected void onPause() {
        super.onPause();

        webView.loadUrl(videoBlanker);
        webView.pauseTimers();
        webView.onPause();
    }



    /*
    Q: Can I use an Android WebView and the <video> HTML tag for video playback?
    A:
    Yes, with limitations. Hardware media resources are not currently released by the system when your app pauses or stops. To work around this issue implement your onStop() method to explicitly kill the process for your app:

    https://developer.amazon.com/public/solutions/devices/fire-tv/docs/amazon-fire-tv-sdk-frequently-asked-questions
    public void onStop() {
        super.onStop();
        android.os.Process.killProcess(android.os.Process.myPid());
    }
    This issue may also cause instability in the user experience and navigation for your app. The VisualOn SDK is the recommended method for media playback on the device.
    */

    @Override
    protected void onStop() {
        super.onStop();
        // the fascinating part of the next line is that it doesn't kill the application, only this intent
        /////////////  android.os.Process.killProcess(android.os.Process.myPid());
        //no no no! Amazon advice is bad. It causes a ton of problems.
        //the original problem was that the webview video view frankenhybrid wouldn't release the
        //hardware when the user left the video player.
        //the only and correct solution is to load a very short quiet clip into the webview
        //when the user leaves
        //see onPause for my implementation

    }


}
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, , -, , , . OP:

https://github.com/kslazarev/android-youtube-player

, . . , .

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