Question

我创建了一个仅使用活动和扩展View的游戏，问题是我不知道如何在我的活动中设置我的Admob，因为如果我不在我的sentContentView中放置一个布局，则说它为null。我已经尝试在活动中创建一个布局，它没有工作，我也尝试在xml中添加我的视图，也没有工作。我不知道如何解决这个问题。我的菜单活动：

 @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Menu menu = new Menu(this);
    menu.setKeepScreenOn(true);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    getSupportActionBar().hide();
    setContentView(menu);
    MobileAds.initialize(this, "ad_id_banner");
    mAdView = (AdView) this.findViewById(R.id.adView);
    AdRequest adRequest = new AdRequest.Builder().build();
    mAdView.loadAd(adRequest);

我的菜单视图（我只会放置构造函数）：

public class Menu extends View {

private Bitmap titleGraphic;
private Bitmap playButtonUp;
private Bitmap playButtonDown;
private Bitmap InstruButtonUp;
private Bitmap InstruButtonDown;
private Bitmap background;
private Bitmap back;
private boolean playButtonPressed;
private boolean instruButtonPressed;
private int screenW;
private int screenH;
private Context myContext;

public Menu (Context context){
    super(context);
    myContext = context;
    titleGraphic = BitmapFactory.decodeResource(getResources(),R.drawable.title_graphic);
    playButtonUp = BitmapFactory.decodeResource(getResources(),R.drawable.play_button_up);
    playButtonDown = BitmapFactory.decodeResource(getResources(),R.drawable.play_button_down);
    InstruButtonUp = BitmapFactory.decodeResource(getResources(),R.drawable.instru_button_up);
    InstruButtonDown = BitmapFactory.decodeResource(getResources(),R.drawable.instru_button_down);
    back = BitmapFactory.decodeResource(myContext.getResources(),R.drawable.frontbackground);

}
@Override
public void onSizeChanged(int w, int h, int oldw, int oldh)
{
    super.onSizeChanged(w,h,oldw,oldh);
    screenW = w;
    screenH = h;
    background = Bitmap.createScaledBitmap(back,screenW,screenH,true);
}

在这里，我为AdMob创建了一个XML：

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.acimutstudios.puzzle.MainActivity">

    <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_centerHorizontal="true"
        android:layout_alignParentBottom="true"
        ads:adSize="BANNER"
        ads:adUnitId="ca-app-pub-3940256099942544/5224354917">
    </com.google.android.gms.ads.AdView>
</RelativeLayout>

logCat错误消息：

FATAL EXCEPTION: main
              Process: com.acimutstudios.puzzle, PID: 6885
              java.lang.RuntimeException: Unable to start activity ComponentInfo{com.acimutstudios.puzzle/com.acimutstudios.puzzle.MenuActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.ads.AdView.loadAd(com.google.android.gms.ads.AdRequest)' on a null object reference
                  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
                  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
                  at android.app.ActivityThread.-wrap12(ActivityThread.java)
                  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
                  at android.os.Handler.dispatchMessage(Handler.java:102)
                  at android.os.Looper.loop(Looper.java:154)
                  at android.app.ActivityThread.main(ActivityThread.java:6119)
                  at java.lang.reflect.Method.invoke(Native Method)
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
               Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.ads.AdView.loadAd(com.google.android.gms.ads.AdRequest)' on a null object reference
                  at com.acimutstudios.puzzle.MenuActivity.onCreate(MenuActivity.java:37)
                  at android.app.Activity.performCreate(Activity.java:6679)

如何在没有xml文件的情况下在我的活动中使用Admob

0 个答案: