feat: add full screen support based on expo-av implementation

android/src/main/java/com/brentvatne/exoplayer/FullScreenPlayerView.java

@@ -0,0 +1,71 @@
+package com.brentvatne.exoplayer;
+
+import android.app.Dialog;
+import android.content.Context;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+import android.widget.ImageButton;
+
+import com.google.android.exoplayer2.ui.PlayerControlView;
+
+public class FullScreenPlayerView extends Dialog {
+  private final PlayerControlView playerControlView;
+  private final ExoPlayerView exoPlayerView;
+  private ViewGroup parent;
+  private final FrameLayout containerView;
+
+  public FullScreenPlayerView(Context context, ExoPlayerView exoPlayerView, PlayerControlView playerControlView) {
+    super(context, android.R.style.Theme_Black_NoTitleBar_Fullscreen);
+    this.playerControlView = playerControlView;
+    this.exoPlayerView = exoPlayerView;
+    containerView = new FrameLayout(context);
+    setContentView(containerView, generateDefaultLayoutParams());
+  }
+
+  @Override
+  protected void onStart() {
+    parent = (FrameLayout)(exoPlayerView.getParent());
+
+    parent.removeView(exoPlayerView);
+    containerView.addView(exoPlayerView, generateDefaultLayoutParams());
+
+    if (playerControlView != null) {
+      ImageButton imageButton = playerControlView.findViewById(com.brentvatne.react.R.id.exo_fullscreen);
+      imageButton.setBackgroundResource(com.google.android.exoplayer2.ui.R.drawable.exo_icon_fullscreen_exit);
+      imageButton.setContentDescription(getContext().getString(com.google.android.exoplayer2.ui.R.string.exo_controls_fullscreen_exit_description));
+      parent.removeView(playerControlView);
+      containerView.addView(playerControlView, generateDefaultLayoutParams());
+
+    }
+
+    super.onStart();
+  }
+
+  @Override
+  protected void onStop() {
+    containerView.removeView(exoPlayerView);
+    parent.addView(exoPlayerView, generateDefaultLayoutParams());
+
+    if (playerControlView != null) {
+      ImageButton imageButton = playerControlView.findViewById(com.brentvatne.react.R.id.exo_fullscreen);
+      imageButton.setBackgroundResource(com.google.android.exoplayer2.ui.R.drawable.exo_icon_fullscreen_enter);
+      imageButton.setContentDescription(getContext().getString(com.google.android.exoplayer2.ui.R.string.exo_controls_fullscreen_enter_description));
+      containerView.removeView(playerControlView);
+      parent.addView(playerControlView, generateDefaultLayoutParams());
+    }
+
+    parent.requestLayout();
+    parent = null;
+
+    super.onStop();
+  }
+
+  private FrameLayout.LayoutParams generateDefaultLayoutParams() {
+    FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(
+        FrameLayout.LayoutParams.MATCH_PARENT,
+        FrameLayout.LayoutParams.MATCH_PARENT
+    );
+    layoutParams.setMargins(0, 0, 0, 0);
+    return layoutParams;
+  }
+}

android/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java

@@ -140,6 +140,7 @@ class ReactExoplayerView extends FrameLayout implements
     private Player.Listener eventListener;
 
     private ExoPlayerView exoPlayerView;
+    private FullScreenPlayerView fullScreenPlayerView;
 
     private DataSource.Factory mediaDataSourceFactory;
     private ExoPlayer player;
@@ -399,6 +400,10 @@ class ReactExoplayerView extends FrameLayout implements
             }
         });
 
+        //Handling the fullScreenButton click event
+        ImageButton fullScreenButton = playerControlView.findViewById(R.id.exo_fullscreen);
+        fullScreenButton.setOnClickListener(v -> setFullscreen(!isFullscreen));
+
         // Invoking onPlaybackStateChanged and onPlayWhenReadyChanged events for Player
         eventListener = new Player.Listener() {
             @Override
@@ -664,6 +669,7 @@ class ReactExoplayerView extends FrameLayout implements
         setControls(controls);
         applyModifiers();
         startBufferCheckTimer();
+        fullScreenPlayerView = new FullScreenPlayerView(getContext(), exoPlayerView, playerControlView);
     }
 
     private DrmSessionManager buildDrmSessionManager(UUID uuid, String licenseUrl, String[] keyRequestPropertiesArray) throws UnsupportedDrmException {
@@ -1770,14 +1776,15 @@ class ReactExoplayerView extends FrameLayout implements
                         | SYSTEM_UI_FLAG_FULLSCREEN;
             }
             eventEmitter.fullscreenWillPresent();
-            decorView.setSystemUiVisibility(uiOptions);
+            fullScreenPlayerView.show();
             eventEmitter.fullscreenDidPresent();
         } else {
             uiOptions = View.SYSTEM_UI_FLAG_VISIBLE;
             eventEmitter.fullscreenWillDismiss();
-            decorView.setSystemUiVisibility(uiOptions);
+            fullScreenPlayerView.dismiss();
             eventEmitter.fullscreenDidDismiss();
         }
+        post(() -> decorView.setSystemUiVisibility(uiOptions));
     }
 
     public void setUseTextureView(boolean useTextureView) {

android/src/main/res/layout/exo_player_control_view.xml

@@ -71,6 +71,14 @@
             android:paddingRight="4dp"
             android:includeFontPadding="false"
             android:textColor="#FFBEBEBE"/>
+
+        <ImageButton
+            android:id="@id/exo_fullscreen"
+            style="@style/ExoMediaButton.FullScreen"
+            android:layout_width="30dp"
+            android:layout_height="30dp"
+            android:layout_margin="4dp"
+            android:scaleType="fitCenter" />
     </LinearLayout>
 
 </LinearLayout>

android/src/main/res/values/styles.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="ExoMediaButton.FullScreen">
+        <item name="android:src">@drawable/exo_icon_fullscreen_enter</item>
+        <item name="android:contentDescription">@string/exo_controls_fullscreen_enter_description</item>
+    </style>
+</resources>