No, it means your variable lv is null. On Mon, Aug 2, 2010 at 4:43 PM, Victoria Busse <victoriasarabu...@gmail.com> wrote: > The Logcat says that there is a 08-02 22:33:45.704: > ERROR/AndroidRuntime(6918): java.lang.NullPointerException > 08-02 22:33:45.704: > ERROR/AndroidRuntime(6918): at > com.mobilevideoeditor.moved.EditorView.onClick(EditorView.java:82), which > is lv.setAdapter(new ArrayAdapter<String>(this, > R.layout.specialeffectsview, specialEffects)); but this would mean that > R.layout.specialeffectsview doesn't exist, or? And it definitely does (below > is the code I use for the specialeffectsview.xml) > <?xml version="1.0" encoding="utf-8"?> > <LinearLayout android:id="@+id/view_special_effects_list" > android:layout_width="fill_parent" > android:layout_height="fill_parent" > xmlns:android="http://schemas.android.com/apk/res/android";> > <ListView android:id="@+id/special_effects_list" > android:layout_height="wrap_content" > android:layout_width="fill_parent"></ListView> > </LinearLayout> > > > This is the entire logcat output: > 08-02 22:33:45.694: ERROR/AndroidRuntime(6918): Uncaught handler: thread > main exiting due to uncaught exception > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): > java.lang.NullPointerException > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > com.mobilevideoeditor.moved.EditorView.onClick(EditorView.java:82) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.view.View.performClick(View.java:2364) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.view.View.onTouchEvent(View.java:4179) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.view.View.dispatchTouchEvent(View.java:3709) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:924) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:924) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:924) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:924) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:924) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1695) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1116) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.app.Activity.dispatchTouchEvent(Activity.java:2068) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1679) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.view.ViewRoot.handleMessage(ViewRoot.java:1724) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.os.Handler.dispatchMessage(Handler.java:99) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.os.Looper.loop(Looper.java:123) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > android.app.ActivityThread.main(ActivityThread.java:4603) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > java.lang.reflect.Method.invokeNative(Native Method) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > java.lang.reflect.Method.invoke(Method.java:521) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) > 08-02 22:33:45.704: ERROR/AndroidRuntime(6918): at > dalvik.system.NativeStart.main(Native Method) > > On Mon, Aug 2, 2010 at 9:30 PM, Mark Murphy <mmur...@commonsware.com> wrote: >> >> If your error report is accurate, you are not setting lv to a value, >> and so it is null. >> >> On Mon, Aug 2, 2010 at 4:25 PM, kivy <victoriasarabu...@gmail.com> wrote: >> > Hi >> > >> > I am trying to populate a ViewFlipper with a ListView when a certain >> > button is clicked...but I only get a NullPointerException for >> > lv.setAdapter(new ArrayAdapter<String>(this, >> > R.layout.specialeffectsview, specialEffects)); >> > >> > To be honest I don't really know how to do this, I just learned about >> > the ViewFlipper today and I haven't fully understood how to use it >> > yet. If anyone could help me find how what I have done wrong, that >> > would be great. >> > >> > Thanks in advance. >> > >> > Here is the code I use: >> > >> > public void onClick(View v){ >> > if (v == btnExposure){ >> > >> > mFlipper.setDisplayedChild(0); >> > >> > } >> > else if (v == btnProperties){ >> > mFlipper.setDisplayedChild(1); >> > } >> > >> > else if (v == btnSpecialEffects){ >> > mFlipper.setDisplayedChild(2); >> > String[] specialEffects = >> > getResources().getStringArray(R.array.special_effects_array); >> > lv.setAdapter(new ArrayAdapter<String>(this, >> > R.layout.specialeffectsview, specialEffects)); >> > lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE); >> > } >> > >> > } >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups "Android Developers" group. >> > To post to this group, send email to android-developers@googlegroups.com >> > To unsubscribe from this group, send email to >> > android-developers+unsubscr...@googlegroups.com >> > For more options, visit this group at >> > http://groups.google.com/group/android-developers?hl=en >> > >> >> >> >> -- >> Mark Murphy (a Commons Guy) >> http://commonsware.com | http://github.com/commonsguy >> http://commonsware.com/blog | http://twitter.com/commonsguy >> >> _Android Programming Tutorials_ Version 2.9 Available! >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to android-developers@googlegroups.com >> To unsubscribe from this group, send email to >> android-developers+unsubscr...@googlegroups.com >> 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 android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en
-- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy _Android Programming Tutorials_ Version 2.9 Available! -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
