2016-09-27 169 views
2

好吧,所以我正在开发一个Android应用程序,并且正在尝试将广告放入其中,但当我尝试编译它时,出现错误“Can not resolve symbol'MobileAds'” 。无法解析符号'MobileAds'

这是我有:

activity_main.java 
import com.google.android.gms.ads.AdRequest; 
import com.google.android.gms.ads.AdView; 

public class MainActivity extends ListActivity { 
private ArrayList<Sound> mSounds = null; 
private SoundAdapter mAdapter = null; 
static MediaPlayer mMediaPlayer = null; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    MobileAds.initialize(getApplicationContext(), "ca-app-pub-Removed"); 

    AdView mAdView = (AdView) findViewById(R.id.adView); 
    AdRequest adRequest = new AdRequest.Builder().build(); 
    mAdView.loadAd(adRequest); 
} 

我的XML:

xmlns:ads="http://schemas.android.com/apk/res-auto" 
<com.google.android.gms.ads.AdView 
    android:id="@+id/adView" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_centerHorizontal="true" 
    android:layout_alignParentBottom="true" 
    ads:adSize="BANNER" 
    ads:adUnitId="@string/banner_ad_unit_id"> 
</com.google.android.gms.ads.AdView> 

而且

<string name="banner_ad_unit_id">ca-app-pub-(removed)</string> 

项目摇篮

dependencies { 
    classpath 'com.android.tools.build:gradle:2.2.0' 
    classpath 'com.google.gms:google-services:3.0.0' 

    // NOTE: Do not place your application dependencies here; they belong 
    // in the individual module build.gradle files 
} 

App Gradle

dependencies { 
compile fileTree(dir: 'libs', include: ['*.jar']) 
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { 
    exclude group: 'com.android.support', module: 'support-annotations' 
}) 
compile 'com.android.support:appcompat-v7:24.2.1' 
compile 'com.google.firebase:firebase-core:9.6.1' 
compile 'com.google.firebase:firebase-ads:9.6.0' 
testCompile 'junit:junit:4.12' 


} 
apply plugin: 'com.google.gms.google-services' 

为什么我会收到此错误消息? 对此的任何帮助表示赞赏。谢谢!

+1

看看'MainActivity'中的'import'语句。你有'MobileAds'导入吗? –

+1

Agh ...大声笑感谢这么多的伴侣! – Freeman

回答

4

对于有这个问题的人:

请确保您有

import com.google.android.gms.ads.MobileAds; 

在MainActivity.java

0

如果你在你活动的进口则一定有Maven的在摇篮项目级别:

maven { 
     url "https://maven.google.com" 
    }