Have tried it but could not solve it Share the code if anyone wants to be nice and look at it.
Here are two projects https://dl.dropbox.com/u/36779/library_project.zip Puzzle is an open source project I tried to get to work as a library and can be downloaded here: http://code.google.com/p/androidsoft.../trunk/puzzle/ The project "Navigation" has a class with one button. The puzzle project will open when you click on it. Den onsdagen den 8:e augusti 2012 kl. 17:17:14 UTC+2 skrev Kostya Vasilyev: > > You've got a crash: > > 08-08 12:44:31.607: E/AndroidRuntime(780): Caused by: > java.lang.NullPointerException > 08-08 12:44:31.607: E/AndroidRuntime(780): at org.androidsoft.games.puzzle. > kids.AbstractMainActivity.onCreate(AbstractMainActivity.java:81) > > Set a breakpoint in AbstractMainActivity onCreate, figure out what is > null, and fix it. > > -- K > > > Want to start a standalone android project with a button in another >> project. First made a simple main app with a button that was referring to >> another project with Hello World with "is Library in Preferences". All >> according >> http://developer.android.com/tools/projects/projects-eclipse.html#SettingUpLibraryProjectand >> it worked without problems. >> >> Did the same thing with an open soruce project (puzzle) >> http://code.google.com/p/androidsoft/source/browse/#svn%2Ftrunk%2Fpuzzlebut >> get an error message in LogCat and my appa crashes when I click the >> button in my main app. >> >> Guess I may have missed something in AndroidManifest.xml According to the >> documentation it says >> >> Declaring library components in the manifest file: You must declare any >> <activity>, <service>, <receiver>, <provider>, and so on, as well as >> <permission>, <uses-library>. >> >> I can compile puzzle as their own project without any problems. If the >> puzzle is a library will not work. >> >> >> My main app with a button that will start the second project >> >> public class AppActivity extends Activity { >> >> Button button; >> >> @Override >> public void onCreate(Bundle savedInstanceState) { >> super.onCreate(savedInstanceState); >> setContentView(R.layout.main); >> addListenerOnButton(); >> } >> >> public void addListenerOnButton() { >> >> final Context context = this; >> >> button = (Button) findViewById(R.id.button1); >> >> button.setOnClickListener(new OnClickListener() { >> >> @Override >> public void onClick(View arg0) { >> >> Intent intent = new Intent(context, >> org.androidsoft.games.puzzle.kids.MainActivity.class); >> startActivity(intent); >> >> } >> >> }); >> >> } >> >> } >> >> AndroidManifest.xml in my main app with >> android:name="org.androidsoft.games.puzzle.kids.MainActivity >> >> <?xml version="1.0" encoding="utf-8"?> >> <manifest xmlns:android="http://schemas.android.com/apk/res/android"; >> package="com.mkyong.android" >> android:versionCode="1" >> android:versionName="1.0" > >> >> <uses-sdk android:minSdkVersion="10" /> >> >> <application >> android:icon="@drawable/ic_launcher" >> android:label="@string/app_name" > >> <activity >> android:label="@string/app_name" >> android:name=".AppActivity" > >> <intent-filter > >> <action android:name="android.intent.action.MAIN" /> >> <category android:name="android.intent.category.LAUNCHER" /> >> </intent-filter> >> </activity> >> <activity >> android:name="org.androidsoft.games.puzzle.kids.MainActivity"> >> </activity> >> </application> >> >> </manifest> >> >> >> AndroidManifest.xml in puzzle that I want to use as a library >> http://code.google.com/p/androidsoft/source/browse/trunk/puzzle/AndroidManifest.xml >> >> LogCat error >> >> >> 08-08 12:44:31.607: E/AndroidRuntime(780): FATAL EXCEPTION: main >> 08-08 12:44:31.607: E/AndroidRuntime(780): java.lang.RuntimeException: >> Unable to start activity >> ComponentInfo{com.mkyong.android/org.androidsoft.games.puzzle.kids.MainActivity}: >> >> java.lang.NullPointerException >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> android.app.ActivityThread.access$600(ActivityThread.java:130) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> android.os.Handler.dispatchMessage(Handler.java:99) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> android.os.Looper.loop(Looper.java:137) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> android.app.ActivityThread.main(ActivityThread.java:4745) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> java.lang.reflect.Method.invokeNative(Native Method) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> java.lang.reflect.Method.invoke(Method.java:511) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> dalvik.system.NativeStart.main(Native Method) >> 08-08 12:44:31.607: E/AndroidRuntime(780): Caused by: >> java.lang.NullPointerException >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> org.androidsoft.games.puzzle.kids.AbstractMainActivity.onCreate(AbstractMainActivity.java:81) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> org.androidsoft.games.puzzle.kids.MainActivity.onCreate(MainActivity.java:57) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> android.app.Activity.performCreate(Activity.java:5008) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) >> 08-08 12:44:31.607: E/AndroidRuntime(780): at >> android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) >> 08-08 12:44:31.607: E/AndroidRuntime(780): ... 11 more >> >> >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to >> [email protected]<javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en > > > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
