androidannotations + mopub空指針異常

Question

做了任何一個使用androidannotations + mopub？我在運行時收到空指針異常。 似乎無法找到視圖。這裏的列表和堆棧跟蹤

Settings.java

package com.nbrk.rates; 

import android.os.Bundle; 
import android.support.v4.app.NavUtils; 
import com.actionbarsherlock.app.SherlockPreferenceActivity; 
import com.googlecode.androidannotations.annotations.*; 
import com.mopub.mobileads.MoPubView; 

/** 
* Created with IntelliJ IDEA. 
* User: rpagyc 
* Date: 17.12.12 
* Time: 3:12 
* To change this template use File | Settings | File Templates. 
*/ 
@EActivity(R.layout.admob_preference) 
public class Settings extends SherlockPreferenceActivity { 

    @ViewById(R.id.adview) 
    MoPubView adview; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     addPreferencesFromResource(R.xml.app_prefs_cat1); 
    } 

    @AfterViews 
    public void init() { 
     getSupportActionBar().setDisplayHomeAsUpEnabled(true); 

     adview.setAdUnitId("d1124826a1664353bd0c723561b1be34"); 
     adview.loadAd(); 
    } 
} 

admob_preference.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
       android:orientation="vertical" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent" 
       android:gravity="center"> 
    <com.mopub.mobileads.MoPubView 
      android:id="@+id/adview" 
      android:layout_width="fill_parent" 
      android:layout_height="50dp" 
      /> 
    <ListView android:id="@android:id/list" 
       android:layout_width="fill_parent" 
       android:layout_height="fill_parent"/> 
</LinearLayout> 

堆棧跟蹤

08-16 05:36:10.954: ERROR/AndroidRuntime(2190): FATAL EXCEPTION: main 
     java.lang.RuntimeException: Unable to start activity ComponentInfo{com.nbrk.rates/com.nbrk.rates.Settings_}: java.lang.NullPointerException 
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 
     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
     at android.app.ActivityThread.access$600(ActivityThread.java:141) 
     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
     at android.os.Handler.dispatchMessage(Handler.java:99) 
     at android.os.Looper.loop(Looper.java:137) 
     at android.app.ActivityThread.main(ActivityThread.java:5039) 
     at java.lang.reflect.Method.invokeNative(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:511) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
     at dalvik.system.NativeStart.main(Native Method) 
     Caused by: java.lang.NullPointerException 
     at com.nbrk.rates.Settings.init(Settings.java:34) 
     at com.nbrk.rates.Settings_.afterSetContentView_(Settings_.java:34) 
     at com.nbrk.rates.Settings_.setContentView(Settings_.java:40) 
     at android.preference.PreferenceActivity.onCreate(PreferenceActivity.java:510) 
     at com.nbrk.rates.Settings.onCreate(Settings.java:25) 
     at com.nbrk.rates.Settings_.onCreate(Settings_.java:26) 
     at android.app.Activity.performCreate(Activity.java:5104) 
     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
     ... 11 more 

Answer 1

你確定你執行的代碼是跟上時代的？第34行似乎是}。