AdView的旗帜错误

Question

我使用的是AdMob的旗帜在我的应用程序，但是当我运行它，我得到了一个错误，波纹管：

12-17 12:32:19.098: E/Trace(1244): error opening trace file: No such file or directory (2) 
12-17 12:32:19.727: D/dalvikvm(1244): GC_FOR_ALLOC freed 55K, 3% free 8039K/8259K, paused 60ms, total 63ms 
12-17 12:32:19.907: I/dalvikvm-heap(1244): Grow heap (frag case) to 19.900MB for 12582928-byte allocation 
12-17 12:32:20.008: D/dalvikvm(1244): GC_CONCURRENT freed 1K, 2% free 20326K/20615K, paused 30ms+19ms, total 97ms 
12-17 12:32:21.677: W/Ads(1244): No Google Analytics: Library Incompatible. 
12-17 12:32:21.697: D/AndroidRuntime(1244): Shutting down VM 
12-17 12:32:21.697: W/dalvikvm(1244): threadid=1: thread exiting with uncaught exception (group=0x40a13300) 
12-17 12:32:21.727: E/AndroidRuntime(1244): FATAL EXCEPTION: main 
12-17 12:32:21.727: E/AndroidRuntime(1244): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.app.antiwal7amel/com.app.antiwal7amel.MenuActivity}: java.lang.NullPointerException 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at android.app.ActivityThread.access$600(ActivityThread.java:130) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at android.os.Handler.dispatchMessage(Handler.java:99) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at android.os.Looper.loop(Looper.java:137) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at android.app.ActivityThread.main(ActivityThread.java:4745) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at java.lang.reflect.Method.invokeNative(Native Method) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at java.lang.reflect.Method.invoke(Method.java:511) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at dalvik.system.NativeStart.main(Native Method) 
12-17 12:32:21.727: E/AndroidRuntime(1244): Caused by: java.lang.NullPointerException 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at com.app.antiwal7amel.MenuActivity.onCreate(MenuActivity.java:44) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at android.app.Activity.performCreate(Activity.java:5008) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) 
12-17 12:32:21.727: E/AndroidRuntime(1244):  ... 11 more 

我使用它作为波纹管：

public class MenuActivity extends Activity { 
    AdView adView ; 
    @Override 

    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     AdView ad = (AdView) findViewById(R.id.adView); 
AdRequest request = new AdRequest(); 
ad.loadAd(request); 

而且我的舱单里面还有：

<activity android:name="com.google.ads.AdActivity" 
       android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"></activity> 

但是我不知道问题在哪里！我GOOGLE了很多没有解决方案

Answer 1

如果问题位于ad.loadAd(request);这可能是一个问题，您的activity_main布局中不存在id adView。

或者也许AdRequest的初始化有问题。也许你可以检查为什么这些元素之一是null。因为当你知道其中哪些是null时，你可以尝试解决问题。