overridefunonCreate(savedInstanceState:Bundle?){super.onCreate(savedInstanceState)valbackgroundScope=CoroutineScope(Dispatchers.IO)backgroundScope.launch{// Initialize Google Mobile Ads SDK on a background thread.MobileAds.initialize(this@MainActivity){}// Set app volume to be half of current device volume.MobileAds.setAppVolume(0.5f)}}
Java
@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);newThread(()->{// Initialize Google Mobile Ads SDK on a background thread.MobileAds.initialize(this,initializationStatus->{});// Set app volume to be half of current device volume.MobileAds.setAppVolume(0.5f);}).start();}
valsharedPrefs=PreferenceManager.getDefaultSharedPreferences(context)// Set the value to 0 to enable limited ads.sharedPrefs.edit().putInt("gad_has_consent_for_cookies",0).apply()
Java
Contextactivity=getActivity();SharedPreferencessharedPreferences=PreferenceManager.getDefaultSharedPreferences(activity);// Set the value to 0 to enable limited ads.sharedPreferences.edit().putInt("gad_has_consent_for_cookies",0).apply();
[null,null,["最終更新日 2025-08-31 UTC。"],[[["\u003cp\u003eThe \u003ccode\u003eMobileAds\u003c/code\u003e class provides global settings for the Google Mobile Ads SDK, including video ad volume and consent for cookies.\u003c/p\u003e\n"],["\u003cp\u003eYou can control video ad volume by setting the app volume relative to the device volume using \u003ccode\u003eMobileAds.setAppVolume()\u003c/code\u003e and muting with \u003ccode\u003eMobileAds.setAppMuted()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eIf your app has special requirements for cookies, you can enable limited ads by setting the \u003ccode\u003egad_has_consent_for_cookies\u003c/code\u003e SharedPreference to 0.\u003c/p\u003e\n"],["\u003cp\u003eNative ads have separate video options and do not support custom volume control.\u003c/p\u003e\n"]]],["The `MobileAds` class manages the Google Mobile Ads SDK settings. Apps can adjust video ad volume by using `setAppVolume()`, with values from 0.0 (silent) to 1.0 (device volume), ensuring video ads respect app volume. `setAppMuted()` mutes the app volume. For limited ads (LTD), setting the `gad_has_consent_for_cookies` preference to 0 enables them. The SDK default volume is 1, and the app is not muted initially. Native ads have distinct volume controls, via `VideoOptions`.\n"],null,["# Global Settings\n\nSelect platform: [Android](/admob/android/global-settings \"View this page for the Android platform docs.\") [iOS](/admob/ios/global-settings \"View this page for the iOS platform docs.\") [Unity](/admob/unity/global-settings \"View this page for the Unity platform docs.\")\n\n\u003cbr /\u003e\n\nThe `MobileAds` class provides global settings for\n\nGoogle Mobile Ads SDK\n\n.\n\nVideo ad volume control\n-----------------------\n\nIf your app has its own volume controls (such as custom music or sound effect\nvolumes), disclosing app volume to\n\nGoogle Mobile Ads SDK\n\nallows video ads to\nrespect app volume settings. This ensures users receive video ads with the\nexpected audio volume.\n\nThe device volume, controlled through volume buttons or OS-level volume slider,\ndetermines the volume for device audio output. However, apps can independently\nadjust volume levels relative to the device volume to tailor the audio\nexperience. For app open, banner, interstitial, rewarded, and rewarded\ninterstitial ad formats, you can report the relative app volume to the SDK\nthrough the static `setAppVolume()` method. Valid ad volume values range from\n`0.0` (silent) to `1.0` (current device volume). Here's an example of how to\nreport the relative app volume to the SDK: \n\n### Kotlin\n\n override fun onCreate(savedInstanceState: Bundle?) {\n super.onCreate(savedInstanceState)\n\n val backgroundScope = CoroutineScope(Dispatchers.IO)\n backgroundScope.launch {\n // Initialize \n \n Google Mobile Ads SDK\n \n on a background thread.\n MobileAds.initialize(this@MainActivity) {}\n \n // Set app volume to be half of current device volume.\n MobileAds.setAppVolume(0.5f)\n }\n }\n\n### Java\n\n @Override\n protected void onCreate(Bundle savedInstanceState) {\n super.onCreate(savedInstanceState);\n\n new Thread(\n () -\u003e {\n // Initialize \n \n Google Mobile Ads SDK\n \n on a background thread.\n MobileAds.initialize(this, initializationStatus -\u003e {});\n \n // Set app volume to be half of current device volume.\n MobileAds.setAppVolume(0.5f);\n })\n .start();\n }\n\nTo inform the SDK that the app volume has muted, use the `setAppMuted()`\nmethod: \n\n### Kotlin\n\n MobileAds.setAppMuted(true)\n\n### Java\n\n MobileAds.setAppMuted(true);\n\nBy default, the app volume is set to `1` (the current device volume), and the\napp is not muted.\n| **Note:** Video ads that are ineligible to be shown with muted audio are not returned for ad requests made when the app volume is reported as muted or set to a value of `0`. This may restrict a subset of the broader video ads pool from serving.\n\n### Native ads\n\nSee\n[`VideoOptions`](/admob/android/native/video-ads#videooptions)\nfor instructions on how to control the mute settings. Custom volume control is\nnot supported for native ads.\n\nConsent for cookies\n-------------------\n\nIf your app has special requirements, you can set the optional\n[`SharedPreferences`](//developer.android.com/reference/android/content/SharedPreferences)\n`gad_has_consent_for_cookies`. The SDK will enable\n\n[limited ads (LTD)](//support.google.com/admob/answer/10105530)\n\nwhen the `gad_has_consent_for_cookies` preference is set to zero. \n\n### Kotlin\n\n val sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context)\n // Set the value to 0 to enable limited ads.\n sharedPrefs.edit().putInt(\"gad_has_consent_for_cookies\", 0).apply()\n\n### Java\n\n Context activity = getActivity();\n SharedPreferences sharedPreferences =\n PreferenceManager.getDefaultSharedPreferences(activity);\n // Set the value to 0 to enable limited ads.\n sharedPreferences.edit().putInt(\"gad_has_consent_for_cookies\", 0).apply();"]]