Kotlin Android Google AdMob横幅广告示例

在本教程中, 我们在Android应用程序中实施Google AdMob标语广告。要将Google AdMob放置在Android应用程序中, 我们需要创建Google广告单元ID。有关创建Google AdMod帐户和生成广告单元ID的完整参考, 请参见Android Google AdMob。
横幅广告是矩形文字或图像广告, 在活动布局中占据一小部分。要在Android应用程序中实现Google AdMob, 请选择Google AdMob广告活动, 然后将广告格式类型选择为横幅。此活动将添加默认的必需库依赖项, “广告视图”显示, Internet权限以及其他必需的代码。
我们还可以将Google AdMob广告放置在其他活动(例如空白活动)上。
在build.gradle文件中添加Google广告依赖项“ com.google.android.gms:play-services-ads:17.0.0”:
build.gradle

dependencies {implementation fileTree(dir: 'libs', include: ['*.jar'])implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"implementation 'com.android.support:appcompat-v7:26.1.0'implementation 'com.android.support.constraint:constraint-layout:1.1.3'implementation 'com.google.android.gms:play-services-ads:17.0.0'testImplementation 'junit:junit:4.12'}

activity_main.xml
在我们要在其中展示广告的布局上添加Google Ads视图。在这里, 我们已经添加了activity_main.xml文件。
要显示横幅广告, 我们需要将com.google.android.gms.ads.AdView元素添加到XML布局中。横幅广告与屏幕底部对齐。
< ?xml version="1.0" encoding="utf-8"?> < RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:ads="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context="example.srcmini.com.kotlinbannerads.MainActivity"> < TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentTop="true"android:layout_centerHorizontal="true"android:layout_marginTop="215dp"android:text="@string/banner_ad_sample"android:textAppearance="@style/Base.TextAppearance.AppCompat.Medium"/> < !-- view for AdMob Banner Ad --> < com.google.android.gms.ads.AdViewandroid:id="@+id/adView"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_centerHorizontal="true"ads:adSize="BANNER"ads:adUnitId="@string/banner_ad_unit_id" /> < /RelativeLayout>

strings.xml
在string.xml文件中添加创建的广告单元ID。
< resources> < string name="app_name"> Kotlin Banner Ads< /string> < string name="banner_ad_sample"> Banner Ad Sample< /string> < !-- -This is an ad unit ID for a banner test ad. Replace with your own banner ad unit id.--> < string name="banner_ad_unit_id"> ca-app-pub-3940256099942544/6300978111< /string> < !--< string name="title_activity_banner"> BannerActivity< /string> --> < /resources>

MainActivity.kt
在MainActivity.kt类中添加以下代码。要在用户界面上加载广告, 请创建AdRequest实例, 然后通过调用AdView.loadAd(AdRequest)在AdView中加载广告。
覆盖AdView监听器onAdFailedToLoad(), onAdLoaded(), onAdOpened(), onAdClicked(), onAdClosed()等。
package example.srcmini.com.kotlinbanneradsimport android.support.v7.app.AppCompatActivityimport android.os.Bundleimport android.view.Viewimport android.widget.Toastimport com.google.android.gms.ads.AdListenerimport com.google.android.gms.ads.AdRequestimport com.google.android.gms.ads.AdViewclass MainActivity : AppCompatActivity() {lateinit var adView : AdViewoverride fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)setContentView(R.layout.activity_main)// Load an ad into the AdMob banner view.adView = findViewById< View> (R.id.adView) as AdViewval adRequest = AdRequest.Builder().build()adView.loadAd(adRequest)adView.adListener = object : AdListener(){override fun onAdFailedToLoad(p0: Int) {super.onAdFailedToLoad(p0)val toastMessage: String = "ad fail to load"Toast.makeText(applicationContext, toastMessage.toString(), Toast.LENGTH_LONG).show()}override fun onAdLoaded() {super.onAdLoaded()val toastMessage: String = "ad loaded"Toast.makeText(applicationContext, toastMessage.toString(), Toast.LENGTH_LONG).show()}override fun onAdOpened() {super.onAdOpened()val toastMessage: String = "ad is open"Toast.makeText(applicationContext, toastMessage.toString(), Toast.LENGTH_LONG).show()}override fun onAdClicked() {super.onAdClicked()val toastMessage: String = "ad is clicked"Toast.makeText(applicationContext, toastMessage.toString(), Toast.LENGTH_LONG).show()}override fun onAdClosed() {super.onAdClosed()val toastMessage: String = "ad is closed"Toast.makeText(applicationContext, toastMessage.toString(), Toast.LENGTH_LONG).show()}override fun onAdImpression() {super.onAdImpression()val toastMessage: String = "ad impression"Toast.makeText(applicationContext, toastMessage.toString(), Toast.LENGTH_LONG).show()}override fun onAdLeftApplication() {super.onAdLeftApplication()val toastMessage: String = "ad left application"Toast.makeText(applicationContext, toastMessage.toString(), Toast.LENGTH_LONG).show()}}}override fun onPause() {if (adView!=null) {adView.pause(); }super.onPause()}override fun onResume() {super.onResume()if (adView != null) {adView.resume(); }}override fun onDestroy() {if (adView != null) {adView.destroy(); }super.onDestroy(); }}

注意:如果你遇到异常java.lang.RuntimeException:无法获取提供程序com.google.android.gms.ads.MobileAdsInitProvider:java.lang.IllegalStateException:然后添加
< meta-dataandroid:name="com.google.android.gms.ads.AD_MANAGER_APP"android:value="http://www.srcmini.com/true"/>

在AndroidManifest文件中。
AndroidManifest.xml
在AndroidManifest.xml文件中添加以下代码
< ?xml version="1.0" encoding="utf-8"?> < manifest xmlns:android="http://schemas.android.com/apk/res/android"package="example.srcmini.com.kotlinbannerads"> < !-- Include required permissions for Google Mobile Ads to run. --> < uses-permission android:name="android.permission.INTERNET" /> < uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> < applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"> < activity android:name=".MainActivity"> < intent-filter> < action android:name="android.intent.action.MAIN" /> < category android:name="android.intent.category.LAUNCHER" /> < /intent-filter> < /activity> < !-- This meta-data tag is required to use Google Play Services. --> < meta-dataandroid:name="com.google.android.gms.version"android:value="http://www.srcmini.com/@integer/google_play_services_version" /> < meta-dataandroid:name="com.google.android.gms.ads.AD_MANAGER_APP"android:value="http://www.srcmini.com/true"/> < activityandroid:name="com.google.android.gms.ads.AdActivity"android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"android:theme="@android:style/Theme.Translucent" /> < /application> < /manifest>

【Kotlin Android Google AdMob横幅广告示例】输出:
Kotlin Android Google AdMob横幅广告示例

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Kotlin Android Google AdMob横幅广告示例

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Kotlin Android Google AdMob横幅广告示例

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Kotlin Android Google AdMob横幅广告示例

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