ClassNotFoundException in Android

Question

Hy!

I get a ClassNotFoundException but don't know why.

Code:

    startActivityForResult(new Intent(Main.this,MView.class),1);



package android.korn.geopictureview;

import com.google.android.maps.*;

public class MView extends MapActivity{

    @Override
    protected void onCreate(android.os.Bundle arg0) {
        super.onCreate(arg0);
        setContentView(R.layout.mapview);
    }



    @Override
    protected boolean isRouteDisplayed() {
        // TODO Auto-generated method stub
        return false;
    }

}

Manifest:

<application android:icon="@drawable/icon" android:label="@string/app_name">
<uses-library android:name="com.google.android.maps" /> 
    <activity android:name=".Main" android:theme="@android:style/Theme.NoTitleBar"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name=".MView"/>
</application>
<uses-permission android:name="android.permission.INTERNET" />

Log:

   05-28 16:00:28.183: ERROR/AndroidRuntime(1925): java.lang.NoClassDefFoundError: android.korn.geopictureview.MView
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at android.korn.geopictureview.Main.onActivityResult(Main.java:49)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at android.app.Activity.dispatchActivityResult(Activity.java:3828)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at android.app.ActivityThread.deliverResults(ActivityThread.java:3325)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at android.app.ActivityThread.handleSendResult(ActivityThread.java:3371)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at android.app.ActivityThread.access$2700(ActivityThread.java:119)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1893)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at android.os.Handler.dispatchMessage(Handler.java:99)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at android.os.Looper.loop(Looper.java:123)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at android.app.ActivityThread.main(ActivityThread.java:4363)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at java.lang.reflect.Method.invokeNative(Native Method)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at java.lang.reflect.Method.invoke(Method.java:521)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at dalvik.system.NativeStart.main(Native Method)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925): Caused by: java.lang.IllegalAccessError: Class ref in pre-verified class resolved to unexpected implementation
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at dalvik.system.DexFile.defineClass(Native Method)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:209)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:203)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
05-28 16:00:28.183: ERROR/AndroidRuntime(1925):     at java.lang.ClassLoader.loadClass(ClassLoader.java:532)

score 0 · Accepted Answer · answered May 28 '11 at 16:19

0

This seems to happen when you have more then one reference to the maps.jar in your project, double check that it is added and referenced only once.

answered May 28 '11 at 16:19

ferostar

7,074
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Then check you are building against Google API. If nothing works, try cleaning your project, because there must be something messed up in your references: check this question: http://stackoverflow.com/questions/3621163/cannot-resolve-mapactivity-class-on-android. – ferostar May 28 '11 at 16:41

ClassNotFoundException in Android

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