AdRequest Builder 无法解析为类型

Question

我在 http://www.kilobolt.com/unit-4-android-game-development.html. Then I followed this tutorial:https://developers.google.com/mobile-ads-sdk/docs/admob/android/quick-start 使用略微修改的框架版本为 Android 开发了一款游戏，并成功添加了广告，但没有在我的主 activity 上添加广告，因为该框架没有有一个 .xml 主文件 activity（纯 java 代码的表面视图）。但是，我也希望广告出现在主要 activity 上，因为它包含 95% 的游戏内容。我使用在线教程成功地在 surfaceview 上添加了一个测试视图（按钮），但是当我将按钮更改为 AdView 时，出现了这个错误：

"AdRequest.Builder cannot be resolved to a type" 在

AdRequest adRequest = new AdRequest.Builder().build();.

谁能告诉我是什么导致了这个错误？ Eclipse 在同一项目的另一个 activity 中接受了完全相同的代码，但不在此处。我已经进行了必要的导入。

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

.

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    appContext = this.getApplicationContext();
    mainLayout = new FrameLayout(this);
    adLayout = new RelativeLayout(this);

    adView = new AdView(this);
    adView.setAdUnitId("ca-app-pub-3940256099942544/6300978111"); // google test id
    //AdRequest adRequest = new AdRequest.Builder().build();
    adView.setAdSize(AdSize.BANNER);


    RelativeLayout.LayoutParams lp1 = new LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
    RelativeLayout.LayoutParams lp2 = new LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);
    adLayout.setLayoutParams(lp2);
    adLayout.addView(adView);
    lp1.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, RelativeLayout.TRUE);  
    lp1.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
    adView.setLayoutParams(lp1); 

    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

    boolean isPortrait = getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT;
    int frameBufferWidth = isPortrait ? 800 : 1280;
    int frameBufferHeight = isPortrait ? 1280 : 800;
    Bitmap frameBuffer = Bitmap.createBitmap(frameBufferWidth, frameBufferHeight, Config.RGB_565);

    DisplayMetrics metrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(metrics);
    float scaleX = (float) frameBufferWidth / metrics.widthPixels;
    float scaleY = (float) frameBufferHeight / metrics.heightPixels;

    GameScreen.deviceWidth = metrics.widthPixels;
    GameScreen.deviceHeight = metrics.heightPixels;

    prefs = this.getSharedPreferences("AppPrefs", Context.MODE_PRIVATE);
    prefsExist = prefs.contains("showValueAddition");
    loadDefaultSettings();

    renderView = new AndroidFastRenderView(this, frameBuffer);
    graphics = new AndroidGraphics(getAssets(), frameBuffer);
    fileIO = new AndroidFileIO(this);
    audio = new AndroidAudio(this);
    input = new AndroidInput(this, renderView, scaleX, scaleY);
    screen = getInitScreen(prefs);

    mainLayout.addView(renderView);
    mainLayout.addView(adLayout);
    setContentView(mainLayout);
}

感谢任何帮助。

Answer 1

使用这个import com.google.android.gms.ads.AdRequest;

Answer 2

使用这个库

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

AdRequest Builder 无法解析为类型

AdRequest Builder cannot be resolved to a type

android

admob