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我是Android的初学者，我试图在webview上展示广告，但我在布局文件中遇到了问题“以下类无法实例化：com.google.android.gms。 ads.AdView”。我遵循了使用谷歌播放服务所涉及的所有步骤。非常感谢您的帮助。Admob + Android WebView问题
MainActivity.Java
package com.test.webviewcode;
import com.test.webviewcode.R;
import com.google.android.gms.ads.*;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.LinearLayout;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdSize;
import com.google.android.gms.ads.AdView;
import android.app.Activity;
public class MainActivity extends Activity {
private AdView adView;
private WebView mWebView;
private static final String AD_UNIT_ID = "xxxxxxxxxxxxxxxxxxxxxxxxx";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView = (WebView) findViewById(R.id.activity_main_webview);
// Enable Javascript
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
mWebView.loadUrl("https://www.google.com/");
// Stop local links and redirects from opening in browser instead of WebView
mWebView.setWebViewClient(new WebViewClient1());
// Create an ad.
adView = new AdView(this);
adView.setAdSize(AdSize.BANNER);
adView.setAdUnitId(AD_UNIT_ID);
LinearLayout Layout = (LinearLayout) findViewById(R.id.adView);
Layout.addView(adView);
AdRequest adRequest = new AdRequest.Builder()
.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
.addTestDevice("yyyyyyyyyyyyyyyyyyyyyyyyyyy")
.build();
adView.loadAd(adRequest);
}
@Override
public void onBackPressed() {
if(mWebView.canGoBack()) {
mWebView.goBack();
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onConfigurationChanged(Configuration newConfig){
super.onConfigurationChanged(newConfig);
}
@Override
public void onResume() {
super.onResume();
if (adView != null) {
adView.resume();
}
}
@Override
public void onPause() {
if (adView != null) {
adView.pause();
}
super.onPause();
}
/** Called before the activity is destroyed. */
@Override
public void onDestroy() {
// Destroy the AdView.
if (adView != null) {
adView.destroy();
}
super.onDestroy();
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<com.google.android.gms.ads.AdView
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="@+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="false"
android:layout_centerHorizontal="true"
ads:adSize="BANNER"
ads:adUnitId="xxxxxxxxxxxxxxxxxx" >
<!--
ads:loadAdOnCreate="true"
ads:refreshInterval="30" >
-->
</com.google.android.gms.ads.AdView>
<LinearLayout
android:layout_alignParentTop="true"
android:layout_above="@id/adView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ProgressBar
android:id="@+id/ProgressBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:indeterminate="false"
android:progress="50"
android:progressDrawable="@drawable/greenprogress" />
<WebView
android:id="@+id/activity_main_webview"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
</RelativeLayout>
Mainfest File
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.webviewcode"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="21" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<meta-data android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"/>
</application>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
我认为AdMob的 – 2014-08-30 07:32:44
纳文的乌尔使用横幅进阶，能不能请您详细阐述，并告诉我，我该如何解决这个问题 – tattva 2014-08-30 07:37:41
.addTestDevice（AdRequest.DEVICE_ID_EMULATOR） .addTestDevice（“yyyyyyyyyyyyyyyyyyyyyyyyyyy”）从删除此两个线路你的代码和没有问题在你的我认为是加载请回你的屏幕我认为你的电子邮件广告 – 2014-08-30 07:42:45