Nascondi le barre del sistema per la modalità immersiva
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Alcuni contenuti offrono un'esperienza ottimale a schermo intero, senza indicatori nella
barra di stato o nella barra di navigazione. Alcuni esempi sono video, giochi, gallerie di immagini, libri e slide di presentazioni. Questa modalità è chiamata
modalità immersiva. Questa pagina mostra come coinvolgere maggiormente gli utenti con
i contenuti a schermo intero.
Figura 1. Esempio di modalità immersiva.
La modalità immersiva aiuta gli utenti a evitare uscite accidentali durante una partita e
offre un'esperienza immersiva per godersi immagini, video e libri.
Tuttavia, tieni presente la frequenza con cui gli utenti entrano e escono dalle app per controllare le notifiche,
per eseguire ricerche improvvisate o per intraprendere altre azioni. Poiché la modalità immersiva
impedisce agli utenti di accedere facilmente alla navigazione del sistema, utilizzala solo
quando il vantaggio per l'esperienza utente va oltre il semplice utilizzo di spazio
aggiuntivo sullo schermo.
Usa WindowInsetsControllerCompat.hide()
per nascondere le barre di sistema e WindowInsetsControllerCompat.show()
per visualizzarle di nuovo.
Il seguente snippet mostra un esempio di configurazione di un pulsante per nascondere e mostrare
le barre di sistema.
Kotlin
override fun onCreate(savedInstanceState: Bundle?) {
...
val windowInsetsController =
WindowCompat.getInsetsController(window, window.decorView)
// Configure the behavior of the hidden system bars.
windowInsetsController.systemBarsBehavior =
WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
// Add a listener to update the behavior of the toggle fullscreen button when
// the system bars are hidden or revealed.
ViewCompat.setOnApplyWindowInsetsListener(window.decorView) { view, windowInsets ->
// You can hide the caption bar even when the other system bars are visible.
// To account for this, explicitly check the visibility of navigationBars()
// and statusBars() rather than checking the visibility of systemBars().
if (windowInsets.isVisible(WindowInsetsCompat.Type.navigationBars())
|| windowInsets.isVisible(WindowInsetsCompat.Type.statusBars())) {
binding.toggleFullscreenButton.setOnClickListener {
// Hide both the status bar and the navigation bar.
windowInsetsController.hide(WindowInsetsCompat.Type.systemBars())
}
} else {
binding.toggleFullscreenButton.setOnClickListener {
// Show both the status bar and the navigation bar.
windowInsetsController.show(WindowInsetsCompat.Type.systemBars())
}
}
ViewCompat.onApplyWindowInsets(view, windowInsets)
}
}
Java
@Override
protected void onCreate(Bundle savedInstanceState) {
...
WindowInsetsControllerCompat windowInsetsController =
WindowCompat.getInsetsController(getWindow(), getWindow().getDecorView());
// Configure the behavior of the hidden system bars.
windowInsetsController.setSystemBarsBehavior(
WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
);
// Add a listener to update the behavior of the toggle fullscreen button when
// the system bars are hidden or revealed.
ViewCompat.setOnApplyWindowInsetsListener(
getWindow().getDecorView(),
(view, windowInsets) -> {
// You can hide the caption bar even when the other system bars are visible.
// To account for this, explicitly check the visibility of navigationBars()
// and statusBars() rather than checking the visibility of systemBars().
if (windowInsets.isVisible(WindowInsetsCompat.Type.navigationBars())
|| windowInsets.isVisible(WindowInsetsCompat.Type.statusBars())) {
binding.toggleFullscreenButton.setOnClickListener(v -> {
// Hide both the status bar and the navigation bar.
windowInsetsController.hide(WindowInsetsCompat.Type.systemBars());
});
} else {
binding.toggleFullscreenButton.setOnClickListener(v -> {
// Show both the status bar and the navigation bar.
windowInsetsController.show(WindowInsetsCompat.Type.systemBars());
});
}
return ViewCompat.onApplyWindowInsets(view, windowInsets);
});
}
Se vuoi, puoi specificare il tipo di barre di sistema da nascondere e determinare
il loro comportamento quando un utente interagisce con loro.
Specifica le barre di sistema da nascondere
Per specificare il tipo di barre di sistema da nascondere, trasmetti uno dei seguenti parametri
a WindowInsetsControllerCompat.hide()
.
Specificare il comportamento delle barre di sistema nascoste
Utilizza WindowInsetsControllerCompat.setSystemBarsBehavior()
per specificare il comportamento delle barre di sistema nascoste quando l'utente interagisce con loro.
I campioni di contenuti e codice in questa pagina sono soggetti alle licenze descritte nella Licenza per i contenuti. Java e OpenJDK sono marchi o marchi registrati di Oracle e/o delle sue società consociate.
Ultimo aggiornamento 2025-08-27 UTC.
[null,null,["Ultimo aggiornamento 2025-08-27 UTC."],[],[],null,["Some content is best experienced in fullscreen without any indicators on the\nstatus bar or the navigation bar. Some examples are videos, games, image\ngalleries, books, and presentation slides. This is referred to as\n*immersive mode*. This page shows how you can engage users more deeply with\ncontent in fullscreen. \n**Figure 1.** Example of immersive mode.\n\nImmersive mode helps users avoid accidental exits during a game and\ndelivers an immersive experience for enjoying images, videos, and books.\nHowever, be mindful of how often users jump in and out of apps to check notifications,\nto conduct impromptu searches, or to take other actions. Because immersive mode\ncauses users to lose easy access to system navigation, use immersive mode only\nwhen the benefit to the user experience goes beyond simply using extra screen\nspace.\n\nUse [`WindowInsetsControllerCompat.hide()`](/reference/androidx/core/view/WindowInsetsControllerCompat#hide(int))\nto hide the system bars and [`WindowInsetsControllerCompat.show()`](/reference/androidx/core/view/WindowInsetsControllerCompat#show(int))\nto bring them back.\n\nThe following snippet shows an example of configuring a button to hide and show\nthe system bars. \n\nKotlin \n\n```kotlin\noverride fun onCreate(savedInstanceState: Bundle?) {\n ...\n\n val windowInsetsController =\n WindowCompat.getInsetsController(window, window.decorView)\n // Configure the behavior of the hidden system bars.\n windowInsetsController.systemBarsBehavior =\n WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE\n\n // Add a listener to update the behavior of the toggle fullscreen button when\n // the system bars are hidden or revealed.\n ViewCompat.setOnApplyWindowInsetsListener(window.decorView) { view, windowInsets -\u003e\n // You can hide the caption bar even when the other system bars are visible.\n // To account for this, explicitly check the visibility of navigationBars()\n // and statusBars() rather than checking the visibility of systemBars().\n if (windowInsets.isVisible(WindowInsetsCompat.Type.navigationBars())\n || windowInsets.isVisible(WindowInsetsCompat.Type.statusBars())) {\n binding.toggleFullscreenButton.setOnClickListener {\n // Hide both the status bar and the navigation bar.\n windowInsetsController.hide(WindowInsetsCompat.Type.systemBars())\n }\n } else {\n binding.toggleFullscreenButton.setOnClickListener {\n // Show both the status bar and the navigation bar.\n windowInsetsController.show(WindowInsetsCompat.Type.systemBars())\n }\n }\n ViewCompat.onApplyWindowInsets(view, windowInsets)\n }\n}\n```\n\nJava \n\n```java\n@Override\nprotected void onCreate(Bundle savedInstanceState) {\n ...\n\n WindowInsetsControllerCompat windowInsetsController =\n WindowCompat.getInsetsController(getWindow(), getWindow().getDecorView());\n // Configure the behavior of the hidden system bars.\n windowInsetsController.setSystemBarsBehavior(\n WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE\n );\n\n // Add a listener to update the behavior of the toggle fullscreen button when\n // the system bars are hidden or revealed.\n ViewCompat.setOnApplyWindowInsetsListener(\n getWindow().getDecorView(),\n (view, windowInsets) -\u003e {\n // You can hide the caption bar even when the other system bars are visible.\n // To account for this, explicitly check the visibility of navigationBars()\n // and statusBars() rather than checking the visibility of systemBars().\n if (windowInsets.isVisible(WindowInsetsCompat.Type.navigationBars())\n || windowInsets.isVisible(WindowInsetsCompat.Type.statusBars())) {\n binding.toggleFullscreenButton.setOnClickListener(v -\u003e {\n // Hide both the status bar and the navigation bar.\n windowInsetsController.hide(WindowInsetsCompat.Type.systemBars());\n });\n } else {\n binding.toggleFullscreenButton.setOnClickListener(v -\u003e {\n // Show both the status bar and the navigation bar.\n windowInsetsController.show(WindowInsetsCompat.Type.systemBars());\n });\n }\n return ViewCompat.onApplyWindowInsets(view, windowInsets);\n });\n}\n```\n\nOptionally, you can specify the type of system bars to hide and determine\ntheir behavior when a user interacts with them.\n\nSpecify which system bars to hide\n\nTo specify the type of system bars to hide, pass one of the following parameters\nto `WindowInsetsControllerCompat.hide()`.\n\n- Use [`WindowInsetsCompat.Type.systemBars()`](/reference/kotlin/androidx/core/view/WindowInsetsCompat.Type#systembars) to\n hide both system bars.\n\n- Use [`WindowInsetsCompat.Type.statusBars()`](/reference/kotlin/androidx/core/view/WindowInsetsCompat.Type#statusbars) to\n hide only the status bar.\n\n- Use [`WindowInsetsCompat.Type.navigationBars()`](/reference/kotlin/androidx/core/view/WindowInsetsCompat.Type#navigationbars) to\n hide only the navigation bar.\n\nSpecify behavior of hidden system bars\n\nUse [`WindowInsetsControllerCompat.setSystemBarsBehavior()`](/reference/androidx/core/view/WindowInsetsControllerCompat#setSystemBarsBehavior(int))\nto specify how hidden system bars behave when the user interacts with them.\n\n- Use [`WindowInsetsControllerCompat.BEHAVIOR_SHOW_BARS_BY_TOUCH`](/reference/androidx/core/view/WindowInsetsControllerCompat#BEHAVIOR_SHOW_BARS_BY_TOUCH())\n to reveal hidden system bars on *any* user interactions on the corresponding\n display.\n\n- Use [`WindowInsetsControllerCompat.BEHAVIOR_SHOW_BARS_BY_SWIPE`](/reference/androidx/core/view/WindowInsetsControllerCompat#BEHAVIOR_SHOW_BARS_BY_SWIPE())\n to reveal hidden system bars on any system gestures, such as swiping from\n the edge of the screen where the bar is hidden from.\n\n- Use [`WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE`](/reference/androidx/core/view/WindowInsetsControllerCompat#BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE())\n to temporarily reveal hidden system bars with system gestures, such as\n swiping from the edge of the screen where the bar is hidden from. These\n transient system bars overlay your app's content, might have some degree of\n transparency, and are automatically hidden after a short timeout."]]