No, we can't explain it for you. We might be able to help you figure it out, though. NullPointerException is what you get if the virtual machine encounters (guess what) a null pointer. The most common causes of it are such things as passing a method an argument that has never been initialized, or, more precisely, was initialized to null.
So you need to double check: what did you pass to setContentView? Was it properly initialized? Did you pass it a View? Was the View properly and fully initialized? If you passed it an int, can Android find the resource with that ID? On Dec 23, 9:24 am, Tsolmon Narantsogt <mgltsol...@gmail.com> wrote: > Hello list > > I got a this error . > java.lang.NullPointerException > W/System.err(10127): at > android.app.Activity.setContentView(Activity.java:1622) > W/System.err(10127): at > android.app.ListActivity.ensureList(ListActivity.java:305) > W/System.err(10127): at > android.app.ListActivity.setListAdapter(ListActivity.java:256) > W/System.err(10127): at > com.dynamiclistview.dynamicListView$ListViewAdapter$1$1.onClick(dynamicListView.java:73) > W/System.err(10127): at > com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:158) > W/System.err(10127): at android.os.Handler.dispatchMessage(Handler.java:99) > W/System.err(10127): at android.os.Looper.loop(Looper.java:123) > W/System.err(10127): at > android.app.ActivityThread.main(ActivityThread.java:4363) > W/System.err(10127): at java.lang.reflect.Method.invokeNative(Native > Method) > W/System.err(10127): at java.lang.reflect.Method.invoke(Method.java:521) > W/System.err(10127): at > com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) > W/System.err(10127): at > com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) > W/System.err(10127): at dalvik.system.NativeStart.main(Native Method) > > 72: dynamicListView d = new dynamicListView(); > 73: d.setListAdapter(new ListViewAdapter(con)); > > I dont't understand it . > Can anyone explain me. > -- > Thanks > Tsolmon -- 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
