Revert "Remove usages of deprecated setSystemUiVisibility()"

shell/platform/android/io/flutter/app/FlutterActivityDelegate.java

@@ -24,9 +24,9 @@
 import android.view.ViewGroup;
 import android.view.Window;
 import android.view.WindowManager.LayoutParams;
-import androidx.core.view.WindowCompat;
 import io.flutter.Log;
 import io.flutter.plugin.common.PluginRegistry;
+import io.flutter.plugin.platform.PlatformPlugin;
 import io.flutter.util.Preconditions;
 import io.flutter.view.FlutterMain;
 import io.flutter.view.FlutterNativeView;
@@ -141,7 +141,7 @@ public void onCreate(Bundle savedInstanceState) {
       Window window = activity.getWindow();
       window.addFlags(LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
       window.setStatusBarColor(0x40000000);
-      WindowCompat.setDecorFitsSystemWindows(window, false);
+      window.getDecorView().setSystemUiVisibility(PlatformPlugin.DEFAULT_SYSTEM_UI);
     }
 
     String[] args = getArgsFromIntent(activity.getIntent());

shell/platform/android/io/flutter/embedding/android/FlutterActivity.java

@@ -38,7 +38,6 @@
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 import androidx.core.content.res.ResourcesCompat;
-import androidx.core.view.WindowCompat;
 import androidx.lifecycle.Lifecycle;
 import androidx.lifecycle.LifecycleOwner;
 import androidx.lifecycle.LifecycleRegistry;
@@ -582,7 +581,7 @@ private void configureStatusBarForFullscreenFlutterExperience() {
       Window window = getWindow();
       window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
       window.setStatusBarColor(0x40000000);
-      WindowCompat.setDecorFitsSystemWindows(window, false);
+      window.getDecorView().setSystemUiVisibility(PlatformPlugin.DEFAULT_SYSTEM_UI);
     }
   }
 

shell/platform/android/io/flutter/embedding/android/FlutterFragmentActivity.java

@@ -38,14 +38,14 @@
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 import androidx.core.content.res.ResourcesCompat;
-import androidx.core.view.WindowCompat;
 import androidx.fragment.app.FragmentActivity;
 import androidx.fragment.app.FragmentManager;
 import io.flutter.Log;
 import io.flutter.embedding.android.FlutterActivityLaunchConfigs.BackgroundMode;
 import io.flutter.embedding.engine.FlutterEngine;
 import io.flutter.embedding.engine.FlutterShellArgs;
 import io.flutter.embedding.engine.plugins.util.GeneratedPluginRegister;
+import io.flutter.plugin.platform.PlatformPlugin;
 
 /**
  * A Flutter {@code Activity} that is based upon {@link FragmentActivity}.
@@ -493,7 +493,7 @@ private void configureStatusBarForFullscreenFlutterExperience() {
       Window window = getWindow();
       window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
       window.setStatusBarColor(0x40000000);
-      WindowCompat.setDecorFitsSystemWindows(window, false);
+      window.getDecorView().setSystemUiVisibility(PlatformPlugin.DEFAULT_SYSTEM_UI);
     }
   }
 

shell/platform/android/io/flutter/plugin/platform/PlatformPlugin.java

@@ -20,8 +20,6 @@
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
-import androidx.core.view.WindowCompat;
-import androidx.core.view.WindowInsetsCompat;
 import androidx.core.view.WindowInsetsControllerCompat;
 import io.flutter.Log;
 import io.flutter.embedding.engine.systemchannels.PlatformChannel;
@@ -30,13 +28,14 @@
 
 /** Android implementation of the platform plugin. */
 public class PlatformPlugin {
+  public static final int DEFAULT_SYSTEM_UI =
+      View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
 
   private final Activity activity;
   private final PlatformChannel platformChannel;
   private final PlatformPluginDelegate platformPluginDelegate;
   private PlatformChannel.SystemChromeStyle currentTheme;
-  private PlatformChannel.SystemUiMode currentSystemUiMode;
-  private List<PlatformChannel.SystemUiOverlay> currentOverlays;
+  private int mEnabledOverlays;
   private static final String TAG = "PlatformPlugin";
 
   /**
@@ -142,7 +141,7 @@ public PlatformPlugin(
     this.platformChannel.setPlatformMessageHandler(mPlatformMessageHandler);
     this.platformPluginDelegate = delegate;
 
-    currentSystemUiMode = PlatformChannel.SystemUiMode.EDGE_TO_EDGE;
+    mEnabledOverlays = DEFAULT_SYSTEM_UI;
   }
 
   /**
@@ -241,98 +240,105 @@ public void onSystemUiVisibilityChange(int visibility) {
   private void setSystemChromeEnabledSystemUIMode(PlatformChannel.SystemUiMode systemUiMode) {
     int enabledOverlays;
 
-    Window window = activity.getWindow();
-    View view = window.getDecorView();
-    WindowInsetsControllerCompat windowInsetsControllerCompat =
-        new WindowInsetsControllerCompat(window, view);
-
-    if (systemUiMode == PlatformChannel.SystemUiMode.LEAN_BACK) {
+    if (systemUiMode == PlatformChannel.SystemUiMode.LEAN_BACK
+        && Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
       // LEAN BACK
-      // Available starting at SDK 20, due to the backwards compatibility provided by the
-      // WindowInsetsControllerCompat class for setting the behavior of system bars.
+      // Available starting at SDK 16
       // Should not show overlays, tap to reveal overlays, needs onChange callback
       // When the overlays come in on tap, the app does not receive the gesture and does not know
       // the system overlay has changed. The overlays cannot be dismissed, so adding the callback
       // support will allow users to restore the system ui and dismiss the overlays.
       // Not compatible with top/bottom overlays enabled.
-      windowInsetsControllerCompat.setSystemBarsBehavior(
-          WindowInsetsControllerCompat.BEHAVIOR_SHOW_BARS_BY_TOUCH);
-      windowInsetsControllerCompat.hide(WindowInsetsCompat.Type.systemBars());
-      WindowCompat.setDecorFitsSystemWindows(window, false);
-    } else if (systemUiMode == PlatformChannel.SystemUiMode.IMMERSIVE) {
+      enabledOverlays =
+          View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+              | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+              | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+              | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+              | View.SYSTEM_UI_FLAG_FULLSCREEN;
+    } else if (systemUiMode == PlatformChannel.SystemUiMode.IMMERSIVE
+        && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
       // IMMERSIVE
-      // Available starting at SDK 20, due to the backwards compatibility provided by the
-      // WindowInsetsControllerCompat class for setting the behavior of system bars.
+      // Available starting at 19
       // Should not show overlays, swipe from edges to reveal overlays, needs onChange callback
       // When the overlays come in on swipe, the app does not receive the gesture and does not know
       // the system overlay has changed. The overlays cannot be dismissed, so adding callback
       // support will allow users to restore the system ui and dismiss the overlays.
       // Not compatible with top/bottom overlays enabled.
-      windowInsetsControllerCompat.setSystemBarsBehavior(
-          WindowInsetsControllerCompat.BEHAVIOR_SHOW_BARS_BY_SWIPE);
-      windowInsetsControllerCompat.hide(WindowInsetsCompat.Type.systemBars());
-      WindowCompat.setDecorFitsSystemWindows(window, false);
-    } else if (systemUiMode == PlatformChannel.SystemUiMode.IMMERSIVE_STICKY) {
+      enabledOverlays =
+          View.SYSTEM_UI_FLAG_IMMERSIVE
+              | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+              | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+              | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+              | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+              | View.SYSTEM_UI_FLAG_FULLSCREEN;
+    } else if (systemUiMode == PlatformChannel.SystemUiMode.IMMERSIVE_STICKY
+        && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
       // STICKY IMMERSIVE
-      // Available starting at SDK 20, due to the backwards compatibility provided by the
-      // WindowInsetsControllerCompat class for setting the behavior of system bars.
+      // Available starting at 19
       // Should not show overlays, swipe from edges to reveal overlays. The app will also receive
       // the swipe gesture. The overlays cannot be dismissed, so adding callback support will
       // allow users to restore the system ui and dismiss the overlays.
       // Not compatible with top/bottom overlays enabled.
-      windowInsetsControllerCompat.setSystemBarsBehavior(
-          WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
-      windowInsetsControllerCompat.hide(WindowInsetsCompat.Type.systemBars());
-      WindowCompat.setDecorFitsSystemWindows(window, false);
+      enabledOverlays =
+          View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+              | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+              | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+              | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+              | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+              | View.SYSTEM_UI_FLAG_FULLSCREEN;
     } else if (systemUiMode == PlatformChannel.SystemUiMode.EDGE_TO_EDGE
         && Build.VERSION.SDK_INT >= 29) {
       // EDGE TO EDGE
-      // Available starting at SDK 29. See issue for context:
-      // https://github.com/flutter/flutter/issues/89774.
-      // Will apply a translucent body scrim behind 2/3 button navigation bars
+      // Available starting at 29
+      // SDK 29 and up will apply a translucent body scrim behind 2/3 button navigation bars
       // to ensure contrast with buttons on the nav and status bars, unless the contrast is not
       // enforced in the overlay styling.
-      WindowCompat.setDecorFitsSystemWindows(window, false);
+      enabledOverlays =
+          View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+              | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+              | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
     } else {
       // When none of the conditions are matched, return without updating the system UI overlays.
       return;
     }
-    currentSystemUiMode = systemUiMode;
+
+    mEnabledOverlays = enabledOverlays;
+    updateSystemUiOverlays();
   }
 
   private void setSystemChromeEnabledSystemUIOverlays(
       List<PlatformChannel.SystemUiOverlay> overlaysToShow) {
-    Window window = activity.getWindow();
-    View view = window.getDecorView();
-    WindowInsetsControllerCompat windowInsetsControllerCompat =
-        new WindowInsetsControllerCompat(window, view);
-
     // Start by assuming we want to hide all system overlays (like an immersive
     // game).
-    windowInsetsControllerCompat.hide(WindowInsetsCompat.Type.systemBars());
-    WindowCompat.setDecorFitsSystemWindows(window, false);
-
-    // We apply sticky immersive mode if desired. Available starting at SDK 20.
-    if (overlaysToShow.size() == 0) {
-      currentSystemUiMode = PlatformChannel.SystemUiMode.IMMERSIVE_STICKY;
-
-      windowInsetsControllerCompat.setSystemBarsBehavior(
-          WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
+    int enabledOverlays =
+        DEFAULT_SYSTEM_UI
+            | View.SYSTEM_UI_FLAG_FULLSCREEN
+            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
+
+    // The SYSTEM_UI_FLAG_IMMERSIVE_STICKY flag was introduced in API 19, so we
+    // apply it
+    // if desired, and if the current Android version is 19 or greater.
+    if (overlaysToShow.size() == 0 && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+      enabledOverlays |= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
     }
 
     // Re-add any desired system overlays.
     for (int i = 0; i < overlaysToShow.size(); ++i) {
       PlatformChannel.SystemUiOverlay overlayToShow = overlaysToShow.get(i);
       switch (overlayToShow) {
         case TOP_OVERLAYS:
-          windowInsetsControllerCompat.show(WindowInsetsCompat.Type.statusBars());
+          enabledOverlays &= ~View.SYSTEM_UI_FLAG_FULLSCREEN;
           break;
         case BOTTOM_OVERLAYS:
-          windowInsetsControllerCompat.show(WindowInsetsCompat.Type.navigationBars());
+          enabledOverlays &= ~View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
+          enabledOverlays &= ~View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
           break;
       }
     }
-    currentOverlays = overlaysToShow;
+
+    mEnabledOverlays = enabledOverlays;
+    updateSystemUiOverlays();
   }
 
   /**
@@ -344,11 +350,8 @@ private void setSystemChromeEnabledSystemUIOverlays(
    * PlatformPlugin}.
    */
   public void updateSystemUiOverlays() {
-    setSystemChromeEnabledSystemUIMode(currentSystemUiMode);
-
-    if (currentOverlays != null) {
-      setSystemChromeEnabledSystemUIOverlays(currentOverlays);
-    } else if (currentTheme != null) {
+    activity.getWindow().getDecorView().setSystemUiVisibility(mEnabledOverlays);
+    if (currentTheme != null) {
       setSystemChromeSystemUIOverlayStyle(currentTheme);
     }
   }