// 獲取布局文件中的WebView實例
WebView webView = findViewById(R.id.webview);
WebSettings webSettings = webView.getSettings();

// 啟用JavaScript以支持基于JS的視頻播放器
webSettings.setJavaScriptEnabled(true);

// 允許訪問文件系統(tǒng)，這對于某些視頻播放情況可能是必要的
webSettings.setAllowFileAccess(true);

// 設(shè)置媒體播放不需要用戶的手勢觸發(fā)，允許自動播放
webSettings.setMediaPlaybackRequiresUserGesture(false);

// 加載包含視頻內(nèi)容的網(wǎng)頁
webView.loadUrl("https://example.com/video-page");

<!-- HTML 示例 -->
<video id="myVideo" controls>
  <source src="movie.mp4" type="video/mp4">
  Your browser does not support the video tag.
</video>

<script type="text/javascript">
  var myVideo = document.getElementById('myVideo');

  // 監(jiān)聽播放事件
  myVideo.addEventListener('play', function() {
    Android.onPlay();
  });

  // 監(jiān)聽暫停事件
  myVideo.addEventListener('pause', function() {
    Android.onPause();
  });
</script>

// 創(chuàng)建一個接口類，供JavaScript調(diào)用
public class WebAppInterface {
    Context mContext;

    /** Instantiate the interface and set the context */
    WebAppInterface(Context c) {
        mContext = c;
    }

    @JavascriptInterface
    public void onPlay() {
        // 當(dāng)視頻開始播放時調(diào)用
        Toast.makeText(mContext, "Video is playing", Toast.LENGTH_SHORT).show();
    }

    @JavascriptInterface
    public void onPause() {
        // 當(dāng)視頻暫停時調(diào)用
        Toast.makeText(mContext, "Video paused", Toast.LENGTH_SHORT).show();
    }
}

// 在Activity中配置WebView以允許JavaScript接口通信
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    WebView webView = findViewById(R.id.webview);
    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);

    // 添加JavaScript接口
    webView.addJavascriptInterface(new WebAppInterface(this), "Android");

    // 加載包含視頻內(nèi)容的網(wǎng)頁
    webView.loadUrl("file:///android_asset/my_video_page.html");
}

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

// 強制WebView使用HTTPS
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    webView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_NEVER_ALLOW);
}

webView.setWebViewClient(new WebViewClient() {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
        String url = request.getUrl().toString();
        
        // 檢查是否為OAuth回調(diào)URL
        if (url.startsWith("https://your-app.com/callback")) {
            // 處理OAuth回調(diào)邏輯，例如提取授權(quán)碼
            handleOAuthCallback(url);
            return true;
        }
        return super.shouldOverrideUrlLoading(view, request);
    }

    private void handleOAuthCallback(String callbackUrl) {
        // 解析授權(quán)碼并交換訪問令牌
        // ...
    }
});

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;

public class EncryptionUtil {

    private static final String ALGORITHM = "AES";
    private static final int KEY_SIZE = 128;

    public static SecretKey generateKey() throws Exception {
        KeyGenerator keyGen = KeyGenerator.getInstance(ALGORITHM);
        keyGen.init(KEY_SIZE);
        return keyGen.generateKey();
    }

    public static String encrypt(String data, SecretKey secretKey) throws Exception {
        Cipher cipher = Cipher.getInstance(ALGORITHM);
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        byte[] encryptedData = cipher.doFinal(data.getBytes());
        return Base64.getEncoder().encodeToString(encryptedData);
    }

    public static String decrypt(String encryptedData, SecretKey secretKey) throws Exception {
        Cipher cipher = Cipher.getInstance(ALGORITHM);
        cipher.init(Cipher.DECRYPT_MODE, secretKey);
        byte[] decodedData = Base64.getDecoder().decode(encryptedData);
        byte[] decryptedData = cipher.doFinal(decodedData);
        return new String(decryptedData);
    }
}

<!-- HTML 示例 -->
<video id="myVideo" controls>
  <source src="movie.mp4" type="video/mp4">
  Your browser does not support the video tag.
</video>

<script type="text/javascript">
  var myVideo = document.getElementById('myVideo');

  // 監(jiān)聽全屏請求事件
  myVideo.addEventListener('fullscreenchange', function() {
      if (!document.fullscreenElement) {
          Android.exitFullscreen();
      } else {
          Android.enterFullscreen();
      }
  });

  // 添加全屏按鈕點擊事件
  document.querySelector('#fullScreenButton').addEventListener('click', function() {
      if (myVideo.requestFullscreen) {
          myVideo.requestFullscreen();
      }
  });
</script>

// Java代碼 - Activity中的方法
public class VideoActivity extends AppCompatActivity {
    private WebView webView;

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

        webView = findViewById(R.id.webview);
        webView.addJavascriptInterface(new WebAppInterface(this), "Android");

        // 設(shè)置WebViewClient以處理全屏變化
        webView.setWebViewClient(new WebViewClient() {
            @Override
            public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
                // 錯誤處理邏輯
                Toast.makeText(VideoActivity.this, "Error loading video", Toast.LENGTH_SHORT).show();
            }
        });
    }

    // 接口類供JavaScript調(diào)用
    public class WebAppInterface {
        Context mContext;

        WebAppInterface(Context c) {
            mContext = c;
        }

        @JavascriptInterface
        public void enterFullscreen() {
            // 進入全屏模式
            getWindow().getDecorView().setSystemUiVisibility(
                    View.SYSTEM_UI_FLAG_FULLSCREEN |
                    View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
                    View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
        }

        @JavascriptInterface
        public void exitFullscreen() {
            // 退出全屏模式
            getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
        }
    }
}

webView.setWebViewClient(new WebViewClient() {
    @Override
    public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
        // 顯示友好的錯誤消息
        Toast.makeText(VideoActivity.this, "Failed to load video: " + error.getDescription(), Toast.LENGTH_LONG).show();

        // 嘗試重新加載頁面
        view.loadUrl(request.getUrl().toString());
    }
});