智慧型橫幅廣告
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智慧型橫幅廣告是一種廣告單元，可針對不同裝置的任何螢幕大小，以任一方向顯示螢幕寬度的橫幅廣告。智慧型橫幅廣告會偵測裝置在目前螢幕方向的寬度，並建立該大小的廣告檢視畫面。
智慧型橫幅廣告會導入三種廣告高度：
| 廣告高度 |
螢幕高度 |
| 32 dp |
≤ 400 dp |
| 50 dp |
> 400 dp 且 ≤ 720 dp |
| 90 dp |
> 720 dp |
一般來說，手機上的智慧橫幅在直向模式下高度為 50 dp，在橫向模式下則為 32 dp。在平板電腦上，無論螢幕是縱向或橫向，廣告高度通常為 90 dp。
如果圖片廣告不夠大，無法佔滿分配到的空間，系統會將圖片置中，並填滿兩側的空間。
如要在 XML 中使用智慧型橫幅廣告，請為廣告大小指定 SMART_BANNER 常數，並將 AdView 的寬度設為 match_parent。例如：
<com.google.android.gms.ads.admanager.AdManagerAdView
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
ads:adSize="SMART_BANNER"
ads:adUnitId="ca-app-pub-3940256099942544/6300978111">
</com.google.android.gms.ads.admanager.AdManagerAdView>
如要透過程式輔助方式建立智慧橫幅，請使用 AdSize.SMART_BANNER 做為廣告尺寸：
Java
AdManagerAdView adView = new AdManagerAdView(this);
adView.setAdSizes(AdSize.SMART_BANNER);
Kotlin
val adView = AdManagerAdView(this)
adView.adSizes = AdSize.SMART_BANNER
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上次更新時間：2025-08-31 (世界標準時間)。
[null,null,["上次更新時間：2025-08-31 (世界標準時間)。"],[[["\u003cp\u003eSmart Banners are responsive ad units that automatically adjust their size to fit the width of the device screen.\u003c/p\u003e\n"],["\u003cp\u003eSmart Banners have three possible ad heights (32dp, 50dp, 90dp) depending on the screen height of the device.\u003c/p\u003e\n"],["\u003cp\u003eWhen using Smart Banners, specify \u003ccode\u003eSMART_BANNER\u003c/code\u003e as the \u003ccode\u003eadSize\u003c/code\u003e and set the \u003ccode\u003eAdView\u003c/code\u003e width to \u003ccode\u003ematch_parent\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eConsider using newer adaptive banners instead of Smart Banners for enhanced functionality.\u003c/p\u003e\n"]]],["Smart Banners display screen-width ads, adapting to device size and orientation. They use three ad heights: 32 dp (≤ 400 dp screen height), 50 dp (\u003e 400 dp and ≤ 720 dp), and 90 dp (\u003e 720 dp). To implement in XML, set `adSize` to `SMART_BANNER` and `AdView` width to `match_parent`. Programmatically, utilize `AdSize.SMART_BANNER`. Image ads are centered when smaller than the space. The content suggests using adaptive banners instead.\n"],null,["Select platform: [Android](/ad-manager/mobile-ads-sdk/android/banner/smart \"View this page for the Android platform docs.\") [iOS](/ad-manager/mobile-ads-sdk/ios/banner/smart \"View this page for the iOS platform docs.\") [Unity](/ad-manager/mobile-ads-sdk/unity/banner/smart \"View this page for the Unity platform docs.\")\n\n\u003cbr /\u003e\n\n| Try the newer [adaptive banners](/ad-manager/mobile-ads-sdk/android/banner/anchored-adaptive) instead.\n\nSmart Banners are ad units that render screen-width banner ads on any screen\nsize across different devices in either orientation. Smart Banners detect the\nwidth of the device in its current orientation and create the ad view that size.\n\nThree ad heights are implemented in smart banners:\n\n| Ad height | Screen height |\n|-----------|------------------------|\n| 32 dp | ≤ 400 dp |\n| 50 dp | \\\u003e 400 dp and ≤ 720 dp |\n| 90 dp | \\\u003e 720 dp |\n\nTypically, Smart Banners on phones have a height of 50 dp in portrait and 32 dp\nin landscape. On tablets, height is normally 90 dp in both orientations.\n\nWhen an image ad isn't large enough to take up the entire allotted space, the\nimage will be centered, and the space on either side will be filled in.\n\nTo use Smart Banners in XML, specify the constant `SMART_BANNER` for the ad\nsize and set the width of the `AdView` to `match_parent`. For example: \n\n```scdoc\n\u003ccom.google.android.gms.ads.admanager.AdManagerAdView\n xmlns:ads=\"http://schemas.android.com/apk/res-auto\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"wrap_content\"\n ads:adSize=\"SMART_BANNER\"\n ads:adUnitId=\"ca-app-pub-3940256099942544/6300978111\"\u003e\n\u003c/com.google.android.gms.ads.admanager.AdManagerAdView\u003e\n```\n\nTo create a Smart Banner programmatically, use `AdSize.SMART_BANNER` as the ad\nsize: \n\nJava \n\n```java\nAdManagerAdView adView = new AdManagerAdView(this);\nadView.setAdSizes(AdSize.SMART_BANNER);\n```\n\nKotlin \n\n```kotlin\nval adView = AdManagerAdView(this)\nadView.adSizes = AdSize.SMART_BANNER\n```"]]
