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POJar-file issue with ADT r17
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  1. POJar-file issue with ADT r17
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    copied!<p>I seem to have a tricky problem since the latest ADT update to release 17.</p> <p>I have made a simple application to illustrate my problem, I don't know if I'm doing anything wrong. The main Activity of my application is inheriting from FragmentActivity in the support package and somehow the application crashes at launch.</p> <p>To illustrate, I made a sample project.</p> <p>First of all, here is the code of my dummy class, DummyProjectActivity, very simple:</p> <pre><code>public class DummyProjectActivity extends FragmentActivity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } } </code></pre> <p>Then, there is the manifest:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="be.emich.labs" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-sdk android:minSdkVersion="8" /&gt; &lt;application android:icon="@drawable/ic_launcher" android:label="@string/app_name" &gt; &lt;activity android:name=".DummyProjectActivity" android:label="@string/app_name" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre> <p>The .jar file is imported correctly in the project and I am getting this stack trace:</p> <pre><code>E/AndroidRuntime(11509): FATAL EXCEPTION: main E/AndroidRuntime(11509): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{be.emich.labs/be.emich.labs.DummyProjectActivity}: java.lang.ClassNotFoundException: be.emich.labs.DummyProjectActivity E/AndroidRuntime(11509): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1879) E/AndroidRuntime(11509): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980) E/AndroidRuntime(11509): at android.app.ActivityThread.access$600(ActivityThread.java:122) E/AndroidRuntime(11509): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146) E/AndroidRuntime(11509): at android.os.Handler.dispatchMessage(Handler.java:99) E/AndroidRuntime(11509): at android.os.Looper.loop(Looper.java:137) E/AndroidRuntime(11509): at android.app.ActivityThread.main(ActivityThread.java:4340) E/AndroidRuntime(11509): at java.lang.reflect.Method.invokeNative(Native Method) E/AndroidRuntime(11509): at java.lang.reflect.Method.invoke(Method.java:511) E/AndroidRuntime(11509): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) E/AndroidRuntime(11509): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) E/AndroidRuntime(11509): at dalvik.system.NativeStart.main(Native Method) E/AndroidRuntime(11509): Caused by: java.lang.ClassNotFoundException: be.emich.labs.DummyProjectActivity E/AndroidRuntime(11509): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61) E/AndroidRuntime(11509): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) E/AndroidRuntime(11509): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) E/AndroidRuntime(11509): at android.app.Instrumentation.newActivity(Instrumentation.java:1023) E/AndroidRuntime(11509): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1870) E/AndroidRuntime(11509): ... 11 more </code></pre> <p>What am I doing wrong here? Could this be a bug in the latest dev tools?</p> <p>I am encountering the problem in every project that uses FragmentActivity from the compatibility library. I don't get what could be wrong. Anyone else having this problem? Help would be greatly appreciated. I'm not having the problem with an Activity that inherits from FragmentActivity. I have uninstalled/reinstalled the application. Done various "clean project". Restarted Eclipse.</p> <p>UPDATE: The issue is apparently not linked to the compatibility package but the way ADT r17 handles linking of jar files. Jars to be included should be put into the libs/ folder and ADT will link them automatically. Otherwise they will be missing from the APK and make the app crash whenever the code from the jarfile is invoked.</p>
 

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