[android-developers] Re: Textview Autoscroll?
Are you not using Eclipse and ADT? If not, you should. Eclipse should automatically switch to the debugger view when you start an app in debug mode (right click your project and Debug As Android Application). From there use the WindowsViewBreakpoint and using the ! icon set a breakpoint on the java.lang.NullPointerException. Eclipse will then show you the exact line of code where the exception occurs. HTH R/ On Tue, Sep 15, 2009 at 8:29 PM, Johnnyr jreyn...@gmail.com wrote: Nevermind! I figured out what was causing my crash. I forgot to declare the scrollview: scrollview=(ScrollView)findViewById(R.id.scrollview); it would be nice if I knew how to use the debugger =( On Sep 15, 5:34 pm, Johnnyr jreyn...@gmail.com wrote: Thank you for the reply. Unfortunatley, that code seems to throw an error. scrollview.scrollTo(0, outputBox.getHeight()); scrollview is my scrollbox, outputBox is my textview. From the debugger, it looks like: Thread exiting due to uncaught exception java.lang.NullpointerException Any ideas? This is my xml for my layout: ?xml version=1.0 encoding=utf-8? RelativeLayout xmlns:android=http://schemas.android.com/apk/res/ android android:orientation=vertical android:layout_width=fill_parent android:layout_height=fill_parent ScrollView android:id=@+id/scrollview android:layout_width=wrap_content android:layout_height=200px TextView android:id=@+id/output android:layout_height=wrap_content android:layout_width=wrap_content android:textStyle=bold android:layout_marginLeft=10px android:text=This is a test Sentence. android:layout_marginBottom=0px android:layout_gravity=left / /ScrollView /RelativeLayout Thanks! On Sep 15, 4:55 pm, Raphael r...@android.com wrote: someTextView.setText(someText); scrollViewWrappingTheTextView.scrollTo(0, someTextView.getHeight()); R/ On Tue, Sep 15, 2009 at 4:35 PM, Johnnyr jreyn...@gmail.com wrote: Hi guys, I'm trying to get a text view, that is a child of a scrollview, to automatically scroll to the bottom when something new is appended to it. Right now I'm at a loss as to how to do this. Any ideas? --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
[android-developers] Re: Textview Autoscroll?
someTextView.setText(someText); scrollViewWrappingTheTextView.scrollTo(0, someTextView.getHeight()); R/ On Tue, Sep 15, 2009 at 4:35 PM, Johnnyr jreyn...@gmail.com wrote: Hi guys, I'm trying to get a text view, that is a child of a scrollview, to automatically scroll to the bottom when something new is appended to it. Right now I'm at a loss as to how to do this. Any ideas? --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
[android-developers] Re: Textview Autoscroll?
Thank you for the reply. Unfortunatley, that code seems to throw an error. scrollview.scrollTo(0, outputBox.getHeight()); scrollview is my scrollbox, outputBox is my textview. From the debugger, it looks like: Thread exiting due to uncaught exception java.lang.NullpointerException Any ideas? This is my xml for my layout: ?xml version=1.0 encoding=utf-8? RelativeLayout xmlns:android=http://schemas.android.com/apk/res/ android android:orientation=vertical android:layout_width=fill_parent android:layout_height=fill_parent ScrollView android:id=@+id/scrollview android:layout_width=wrap_content android:layout_height=200px TextView android:id=@+id/output android:layout_height=wrap_content android:layout_width=wrap_content android:textStyle=bold android:layout_marginLeft=10px android:text=This is a test Sentence. android:layout_marginBottom=0px android:layout_gravity=left / /ScrollView /RelativeLayout Thanks! On Sep 15, 4:55 pm, Raphael r...@android.com wrote: someTextView.setText(someText); scrollViewWrappingTheTextView.scrollTo(0, someTextView.getHeight()); R/ On Tue, Sep 15, 2009 at 4:35 PM, Johnnyr jreyn...@gmail.com wrote: Hi guys, I'm trying to get a text view, that is a child of a scrollview, to automatically scroll to the bottom when something new is appended to it. Right now I'm at a loss as to how to do this. Any ideas? --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
[android-developers] Re: Textview Autoscroll?
Nevermind! I figured out what was causing my crash. I forgot to declare the scrollview: scrollview=(ScrollView)findViewById(R.id.scrollview); it would be nice if I knew how to use the debugger =( On Sep 15, 5:34 pm, Johnnyr jreyn...@gmail.com wrote: Thank you for the reply. Unfortunatley, that code seems to throw an error. scrollview.scrollTo(0, outputBox.getHeight()); scrollview is my scrollbox, outputBox is my textview. From the debugger, it looks like: Thread exiting due to uncaught exception java.lang.NullpointerException Any ideas? This is my xml for my layout: ?xml version=1.0 encoding=utf-8? RelativeLayout xmlns:android=http://schemas.android.com/apk/res/ android android:orientation=vertical android:layout_width=fill_parent android:layout_height=fill_parent ScrollView android:id=@+id/scrollview android:layout_width=wrap_content android:layout_height=200px TextView android:id=@+id/output android:layout_height=wrap_content android:layout_width=wrap_content android:textStyle=bold android:layout_marginLeft=10px android:text=This is a test Sentence. android:layout_marginBottom=0px android:layout_gravity=left / /ScrollView /RelativeLayout Thanks! On Sep 15, 4:55 pm, Raphael r...@android.com wrote: someTextView.setText(someText); scrollViewWrappingTheTextView.scrollTo(0, someTextView.getHeight()); R/ On Tue, Sep 15, 2009 at 4:35 PM, Johnnyr jreyn...@gmail.com wrote: Hi guys, I'm trying to get a text view, that is a child of a scrollview, to automatically scroll to the bottom when something new is appended to it. Right now I'm at a loss as to how to do this. Any ideas? --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
