null pointer exception with a lib

icefairy333 · Jun 12, 2012

this is the code in java for wrap a sdk jar:

B4X:

package ice;


import cn.domob.android.ads.DomobAdListener;
import cn.domob.android.ads.DomobAdView;
import android.util.Log;
import anywheresoftware.b4a.*;
import anywheresoftware.b4a.BA.Author;
import anywheresoftware.b4a.BA.DependsOn;
import anywheresoftware.b4a.BA.Events;
import anywheresoftware.b4a.BA.Permissions;
import anywheresoftware.b4a.BA.ShortName;
import anywheresoftware.b4a.BA.Version;
import anywheresoftware.b4a.objects.ViewWrapper;

@ShortName("AdView_domob")
@Version(1.01F)
@Author("IceFairy")
@DependsOn(values="domobsdk3.0")
@Events(values={"onReceivedFreshAd","onLandingPageOpening","onLandingPageClose","onFailedToReceiveFreshAd"})
@Permissions(values = {"android.permission.INTERNET","android.permission.READ_PHONE_STATE","android.permission.ACCESS_NETWORK_STATE","android.permission.ACCESS_COARSE_LOCATION","android.permission.WRITE_EXTERNAL_STORAGE"})

public class domobad extends ViewWrapper<DomobAdView> {
   public static String ScreenSize_300X250=DomobAdView.INLINE_SIZE_300X250;
   public static String ScreenSize_320X50=DomobAdView.INLINE_SIZE_320X50;
   public static String ScreenSize_600X500=DomobAdView.INLINE_SIZE_600X500;
   public static String ScreenSize_600X94=DomobAdView.INLINE_SIZE_600X94;
   public static String ScreenSize_728X90=DomobAdView.INLINE_SIZE_728X90;
   /**
    * 
    * @param EventName
    * @param publisherID Android public debud Publisher ID:56OJyM1ouMGoaSnvCK 
    * @param size ScreenSize_600X94 or other size string with "320X240"
    * @param autoRefresh Boolean value
    */
public void Initialize(final BA ba,String EventName,String publisherID,String size) {
   Log.i("B4A","initialize");
   setObject(new DomobAdView(ba.activity, publisherID, size));
   super.Initialize(ba, EventName);
     final String eN = EventName.toLowerCase(BA.cul);
     ((DomobAdView)getObject()).setOnAdListener(new DomobAdListener() {
      
      @Override
      public void onReceivedFreshAd(DomobAdView adview) {
         // TODO Auto-generated method stub
         ba.raiseEvent(((DomobAdView)getObject()), eN+"onReceivedFreshAd", new Object[0]);
         
         Log.i("B4A","onReceivedFreshAd");
      }
      
      @Override
      public void onLandingPageOpening() {
         // TODO Auto-generated method stub
         ba.raiseEvent(((DomobAdView)getObject()), eN+"onLandingPageOpening", new Object[0]);
         Log.i("B4A","onLandingPageOpening");
      }
      
      @Override
      public void onLandingPageClose() {
         // TODO Auto-generated method stub
         ba.raiseEvent(((DomobAdView)getObject()), eN+"onLandingPageClose", new Object[0]);
         Log.i("B4A","onLandingPageClose");
      }
      
      @Override
      public void onFailedToReceiveFreshAd(DomobAdView adview) {
         // TODO Auto-generated method stub
         ba.raiseEvent(((DomobAdView)getObject()), eN+"onFailedToReceiveFreshAd", new Object[0]);
         Log.i("B4A","onFailedToReceiveFreshAd");
      }
   });
    return;
   
}
/**
 * 
 * @param key set the keywords for request ads
 */
public void SetKeyWords(String key) {
   ((DomobAdView)getObject()).setKeyword(key);
   return;
}
/**
 * 
 * @param sex "male" or "female"
 */
public void SetSex(String sex) {
   ((DomobAdView)getObject()).setUserGender(sex);
   return;
   
}
public void requestRefreshAd() {
   ((DomobAdView)getObject()).requestRefreshAd();
   return;
}
public void requestAdForAggregationPlatform() {
   ((DomobAdView)getObject()).requestAdForAggregationPlatform();
   return;
   
}
}

this is the xml:

B4X:

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <doclet-version-NOT-library-version>1.02</doclet-version-NOT-library-version>
    <class>
        <name>ice.domobad</name>
        <shortname>AdView_domob</shortname>
        <objectwrapper>cn.domob.android.ads.DomobAdView</objectwrapper>
        <owner>process</owner>
        <event>onReceivedFreshAd</event>
        <event>onLandingPageOpening</event>
        <event>onLandingPageClose</event>
        <event>onFailedToReceiveFreshAd</event>
        <permission>android.permission.INTERNET</permission>
        <permission>android.permission.READ_PHONE_STATE</permission>
        <permission>android.permission.ACCESS_NETWORK_STATE</permission>
        <permission>android.permission.ACCESS_COARSE_LOCATION</permission>
        <permission>android.permission.WRITE_EXTERNAL_STORAGE</permission>
        <method>
            <name>Initialize</name>
            <comment>
ba: 
EventName: 
publisherID: Android public debud Publisher ID:56OJyM1ouMGoaSnvCK
size: ScreenSize_600X94 or other size string with "320X240"
autoRefresh: Boolean value</comment>
            <returntype>void</returntype>
            <parameter>
                <name>ba</name>
                <type>anywheresoftware.b4a.BA</type>
            </parameter>
            <parameter>
                <name>EventName</name>
                <type>java.lang.String</type>
            </parameter>
            <parameter>
                <name>publisherID</name>
                <type>java.lang.String</type>
            </parameter>
            <parameter>
                <name>size</name>
                <type>java.lang.String</type>
            </parameter>
        </method>
        <method>
            <name>RequestFocus</name>
            <comment></comment>
            <returntype>boolean</returntype>
        </method>
        <method>
            <name>BringToFront</name>
            <comment></comment>
            <returntype>void</returntype>
        </method>
        <method>
            <name>buildNativeView</name>
            <comment></comment>
            <returntype>T</returntype>
            <parameter>
                <name>arg0</name>
                <type>android.content.Context</type>
            </parameter>
            <parameter>
                <name>arg1</name>
                <type>java.lang.Class</type>
            </parameter>
            <parameter>
                <name>arg2</name>
                <type>java.util.HashMap</type>
            </parameter>
            <parameter>
                <name>arg3</name>
                <type>boolean</type>
            </parameter>
        </method>
        <method>
            <name>RemoveView</name>
            <comment></comment>
            <returntype>void</returntype>
        </method>
        <method>
            <name>SetBackgroundImage</name>
            <comment></comment>
            <returntype>void</returntype>
            <parameter>
                <name>arg0</name>
                <type>android.graphics.Bitmap</type>
            </parameter>
        </method>
        <method>
            <name>SetSex</name>
            <comment>
sex: "male" or "female"</comment>
            <returntype>void</returntype>
            <parameter>
                <name>sex</name>
                <type>java.lang.String</type>
            </parameter>
        </method>
        <method>
            <name>SetLayout</name>
            <comment></comment>
            <returntype>void</returntype>
            <parameter>
                <name>arg0</name>
                <type>int</type>
            </parameter>
            <parameter>
                <name>arg1</name>
                <type>int</type>
            </parameter>
            <parameter>
                <name>arg2</name>
                <type>int</type>
            </parameter>
            <parameter>
                <name>arg3</name>
                <type>int</type>
            </parameter>
        </method>
        <method>
            <name>Invalidate</name>
            <comment></comment>
            <returntype>void</returntype>
        </method>
        <method>
            <name>SetKeyWords</name>
            <comment>
key: set the keywords for request ads</comment>
            <returntype>void</returntype>
            <parameter>
                <name>key</name>
                <type>java.lang.String</type>
            </parameter>
        </method>
        <method>
            <name>Invalidate3</name>
            <comment></comment>
            <returntype>void</returntype>
            <parameter>
                <name>arg0</name>
                <type>int</type>
            </parameter>
            <parameter>
                <name>arg1</name>
                <type>int</type>
            </parameter>
            <parameter>
                <name>arg2</name>
                <type>int</type>
            </parameter>
            <parameter>
                <name>arg3</name>
                <type>int</type>
            </parameter>
        </method>
        <method>
            <name>requestAdForAggregationPlatform</name>
            <comment></comment>
            <returntype>void</returntype>
        </method>
        <method>
            <name>Invalidate2</name>
            <comment></comment>
            <returntype>void</returntype>
            <parameter>
                <name>arg0</name>
                <type>android.graphics.Rect</type>
            </parameter>
        </method>
        <method>
            <name>requestRefreshAd</name>
            <comment></comment>
            <returntype>void</returntype>
        </method>
        <method>
            <name>SendToBack</name>
            <comment></comment>
            <returntype>void</returntype>
        </method>
        <method>
            <name>IsInitialized</name>
            <comment></comment>
            <returntype>boolean</returntype>
        </method>
        <property>
            <name>Enabled</name>
            <returntype>boolean</returntype>
            <parameter>
                <name>arg0</name>
                <type>boolean</type>
            </parameter>
            <comment></comment>
        </property>
        <property>
            <name>Top</name>
            <returntype>int</returntype>
            <parameter>
                <name>arg0</name>
                <type>int</type>
            </parameter>
            <comment></comment>
        </property>
        <property>
            <name>Visible</name>
            <returntype>boolean</returntype>
            <parameter>
                <name>arg0</name>
                <type>boolean</type>
            </parameter>
            <comment></comment>
        </property>
        <property>
            <name>Tag</name>
            <returntype>java.lang.Object</returntype>
            <parameter>
                <name>arg0</name>
                <type>java.lang.Object</type>
            </parameter>
            <comment></comment>
        </property>
        <property>
            <name>Height</name>
            <returntype>int</returntype>
            <parameter>
                <name>arg0</name>
                <type>int</type>
            </parameter>
            <comment></comment>
        </property>
        <property>
            <name>Background</name>
            <returntype>android.graphics.drawable.Drawable</returntype>
            <parameter>
                <name>arg0</name>
                <type>android.graphics.drawable.Drawable</type>
            </parameter>
            <comment></comment>
        </property>
        <property>
            <name>Width</name>
            <returntype>int</returntype>
            <parameter>
                <name>arg0</name>
                <type>int</type>
            </parameter>
            <comment></comment>
        </property>
        <property>
            <name>Left</name>
            <returntype>int</returntype>
            <parameter>
                <name>arg0</name>
                <type>int</type>
            </parameter>
            <comment></comment>
        </property>
        <property>
            <name>Color</name>
            <parameter>
                <name>arg0</name>
                <type>int</type>
            </parameter>
            <comment></comment>
        </property>
        <field>
            <name>ScreenSize_600X94</name>
            <comment></comment>
            <returntype>java.lang.String</returntype>
        </field>
        <field>
            <name>ScreenSize_300X250</name>
            <comment></comment>
            <returntype>java.lang.String</returntype>
        </field>
        <field>
            <name>ScreenSize_600X500</name>
            <comment></comment>
            <returntype>java.lang.String</returntype>
        </field>
        <field>
            <name>ScreenSize_320X50</name>
            <comment></comment>
            <returntype>java.lang.String</returntype>
        </field>
        <field>
            <name>ScreenSize_728X90</name>
            <comment></comment>
            <returntype>java.lang.String</returntype>
        </field>
    </class>
    <version>1.01</version>
    <author>IceFairy</author>
    <dependsOn>domobsdk3.0</dependsOn>
</root>

and this is the b4a code for call it:

B4X:

'Activity module
Sub Process_Globals
   'These global variables will be declared once when the application starts.
   'These variables can be accessed from all modules.

End Sub

Sub Globals
   'These global variables will be redeclared each time the activity is created.
   'These variables can only be accessed from this module.
   Dim adv As AdView_domob
End Sub

Sub Activity_Create(FirstTime As Boolean)
Activity.LoadLayout("1")
Log(Activity.Width&"X"&Activity.Height)
adv.Initialize("adv","56OJyM1ouMGoaSnvCK","540X884")
adv.SetKeyWords("game")
Activity.AddView(adv,1,1,Activity.Width,100)
End Sub
Sub adv_onFailedToReceiveFreshAd
   Log("加载广告错误")
End Sub
Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub

this is the error log:

B4X:

** Activity (main) Create, isFirst = true **


540X884


initialize


dInitialize (B4A line: 17)


adv.Initialize("adv","56OJyM1ouMGoaSnvCK","540X884")

java.lang.NullPointerException
   at android.view.ViewConfiguration.get(ViewConfiguration.java:232)
   at android.view.View.<init>(View.java:1878)
   at android.view.View.<init>(View.java:1921)
   at android.view.View.<init>(View.java:1899)
   at android.view.ViewGroup.<init>(ViewGroup.java:286)
   at android.widget.RelativeLayout.<init>(RelativeLayout.java:173)
   at cn.domob.android.ads.DomobAdView.<init>(SourceFile)
   at cn.domob.android.ads.DomobAdView.<init>(SourceFile)
   at ice.domobad.Initialize(domobad.java:39)
   at ice.domob.main._activity_create(main.java:220)
   at java.lang.reflect.Method.invokeNative(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:507)
   at anywheresoftware.b4a.BA.raiseEvent2(BA.java:145)
   at ice.domob.main.afterFirstLayout(main.java:84)
   at ice.domob.main.access$100(main.java:16)
   at ice.domob.main$WaitForLayout.run(main.java:72)
   at android.os.Handler.handleCallback(Handler.java:587)


   at android.os.Handler.dispatchMessage(Handler.java:92)
   at android.os.Looper.loop(Looper.java:130)
   at android.app.ActivityThread.main(ActivityThread.java:3859)
   at java.lang.reflect.Method.invokeNative(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:507)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
   at dalvik.system.NativeStart.main(Native Method)
java.lang.NullPointerException

where is wrong please??

:sign0085:

Erel · Jun 12, 2012

You should add @ActivityObject to the class.

icefairy333 · Jun 12, 2012

I add it here:

B4X:

@DependsOn(values="domobsdk3.0")
@Events(values={"onReceivedFreshAd","onLandingPageOpening","onLandingPageClose","onFailedToReceiveFreshAd"})
@Permissions(values = {"android.permission.INTERNET","android.permission.READ_PHONE_STATE","android.permission.ACCESS_NETWORK_STATE","android.permission.ACCESS_COARSE_LOCATION","android.permission.WRITE_EXTERNAL_STORAGE"})
@ActivityObject
public class domobad extends ViewWrapper<DomobAdView> {
   public static String ScreenSize_300X250=DomobAdView.INLINE_SIZE_300X250;
   public static String ScreenSize_320X50=DomobAdView.INLINE_SIZE_320X50;
   public static String ScreenSize_600X500=DomobAdView.INLINE_SIZE_600X500;
   public static String ScreenSize_600X94=DomobAdView.INLINE_SIZE_600X94;
   public static String ScreenSize_728X90=DomobAdView.INLINE_SIZE_728X90;
   private static DomobAdView adv1;

still Error....:sign0161:

Erel · Jun 13, 2012

Make sure that have you recreated the XML file and refreshed the libraries list.

If it still doesn't work, please upload the library and your wrapper.

icefairy333 · Jun 13, 2012

thanks!
this is the zip::icon_clap:

Erel · Jun 13, 2012

domobsdk3.0 includes asset files. You will need to copy those files to the project Files folder.

icefairy333 · Jun 13, 2012

Thanks a lot!This error has been killed!but still with another error,I will test by myself.

null pointer exception with a lib

icefairy333

Active Member

Erel

B4X founder

icefairy333

Active Member

Erel

B4X founder

icefairy333

Active Member

Erel

B4X founder

icefairy333

Active Member

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