智慧型橫幅廣告
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導入智慧型橫幅廣告單元，可在螢幕大小不同的裝置上，以直向或橫向顯示與畫面同寬的橫幅廣告。智慧型橫幅廣告可依當下螢幕擺放方向測量裝置寬度，再視結果顯示尺寸相符廣告檢視區塊。
智慧型橫幅廣告可導入三種廣告高度：
| 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，手機上的智慧型橫幅廣告在直向模式的高度為 50 dp，橫向時則為 32 dp。在平板電腦上，無論直向或橫向，廣告高度通常都是 90 dp。
如果圖像廣告不夠大，無法完整覆蓋預定版面，系統會將圖片置中，並填滿左右兩邊的空間。
如要在 XML 中使用智慧型橫幅廣告，請將廣告大小指定為常數 SMART_BANNER，並將 AdView 的寬度設為 match_parent。例如：
<com.google.android.gms.ads.AdView
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.AdView>
如要以程式輔助方式建立智慧型橫幅廣告，請將廣告大小設為 AdSize.SMART_BANNER：
Java
AdView adView = new AdView(this);
adView.setAdSize(AdSize.SMART_BANNER);
Kotlin
val adView = AdView(this)
adView.adSize = AdSize.SMART_BANNER
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上次更新時間：2025-09-02 (世界標準時間)。
[null,null,["上次更新時間：2025-09-02 (世界標準時間)。"],[[["\u003cp\u003eSmart Banners are responsive ad units that adjust their size to fit the width of the device screen across various devices and orientations.\u003c/p\u003e\n"],["\u003cp\u003eThey automatically determine the appropriate ad height (32 dp, 50 dp, or 90 dp) based on the screen height of the device.\u003c/p\u003e\n"],["\u003cp\u003eIt is recommended to use the newer adaptive banners for better performance and user experience.\u003c/p\u003e\n"],["\u003cp\u003eSmart Banners can be easily implemented in XML by setting the \u003ccode\u003eadSize\u003c/code\u003e to \u003ccode\u003eSMART_BANNER\u003c/code\u003e and the \u003ccode\u003eAdView\u003c/code\u003e width to \u003ccode\u003ematch_parent\u003c/code\u003e, or programmatically by using \u003ccode\u003eAdSize.SMART_BANNER\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,["Select platform: [Android](/admob/android/banner/smart \"View this page for the Android platform docs.\") [iOS](/admob/ios/banner/smart \"View this page for the iOS platform docs.\") [Unity](/admob/unity/banner/smart \"View this page for the Unity platform docs.\")\n\n\u003cbr /\u003e\n\n| Try the newer [adaptive banners](/admob/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.AdView\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.AdView\u003e\n```\n\nTo create a Smart Banner programmatically, use `AdSize.SMART_BANNER` as the ad\nsize: \n\nJava \n\n```java\nAdView adView = new AdView(this);\nadView.setAdSize(AdSize.SMART_BANNER);\n```\n\nKotlin \n\n```kotlin\nval adView = AdView(this)\nadView.adSize = AdSize.SMART_BANNER\n```"]]