I've recently updated Android SDK & Eclipse ADT plugin to latest version. Now when i try to run a pre-existing Android project, the LogCat shows a ClassNotFoundException
.
I tried to create a new device but the problem still exists.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.myapp.MainActivity"
android:label="@string/app_name"
android:windowSoftInputMode="stateHidden" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
05-17 13:09:56.357: E/AndroidRuntime(969): FATAL EXCEPTION: main
05-17 13:09:56.357: E/AndroidRuntime(969): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.myapp/com.example.myapp.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.example.myapp.MainActivity" on path: /data/app/com.example.myapp-1.apk
05-17 13:09:56.357: E/AndroidRuntime(969): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
05-17 13:09:56.357: E/AndroidRuntime(969): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
05-17 13:09:56.357: E/AndroidRuntime(969): at android.app.ActivityThread.access$600(ActivityThread.java:141)
05-17 13:09:56.357: E/AndroidRuntime(969): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
05-17 13:09:56.357: E/AndroidRuntime(969): at android.os.Handler.dispatchMessage(Handler.java:99)
05-17 13:09:56.357: E/AndroidRuntime(969): at android.os.Looper.loop(Looper.java:137)
05-17 13:09:56.357: E/AndroidRuntime(969): at android.app.ActivityThread.main(ActivityThread.java:5041)
05-17 13:09:56.357: E/AndroidRuntime(969): at java.lang.reflect.Method.invokeNative(Native Method)
05-17 13:09:56.357: E/AndroidRuntime(969): at java.lang.reflect.Method.invoke(Method.java:511)
05-17 13:09:56.357: E/AndroidRuntime(969): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-17 13:09:56.357: E/AndroidRuntime(969): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-17 13:09:56.357: E/AndroidRuntime(969): at dalvik.system.NativeStart.main(Native Method)
05-17 13:09:56.357: E/AndroidRuntime(969): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.myapp.MainActivity" on path: /data/app/com.example.myapp-1.apk
05-17 13:09:56.357: E/AndroidRuntime(969): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
05-17 13:09:56.357: E/AndroidRuntime(969): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
05-17 13:09:56.357: E/AndroidRuntime(969): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
05-17 13:09:56.357: E/AndroidRuntime(969): at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
05-17 13:09:56.357: E/AndroidRuntime(969): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
05-17 13:09:56.357: E/AndroidRuntime(969): ... 11 more
I noticed that the new APK file is called myapp-1.apk, while it was usually called myapp.apk. Can someone tell me how to fix?
Try going to Project -> Properties -> Java Build Path -> Order & Export and ensure Android Private Libraries are checked for your project and for all other library projects you are using. Clean all projects afterwards and see what happens.
I know I'm very late to post a reply here. The workaround mentioned by Krauxe didn't help me. My project has two library projects and two jars. I found a solution posted by "laaptu" in the page Libraries do not get added to APK anymore after upgrade to ADT 22.
I have the Eclipse ADT bundle and additional to the @Krauxe's answer, updating the Eclipse .project file as below worked for me:
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>RedbeaconPro</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.android.ide.eclipse.adt.ApkBuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
<nature>org.eclipse.jdt.core.javanature</nature>
</natures>
</projectDescription>
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