A few days ago, I posted a question about the selected typeface
affecting the TextView marquee scroll. It turns out that problem is
also due to my calling the function from the TextView's onDraw()
rather than the ListAdapter's getView(). After I moved the setTypeface
() call from onDraw() to getView(), my application's ListView was able
to marquee scroll italicized text.
Best regards,
Greg
On Sep 1, 1:47 pm, greg <sep...@eduneer.com> wrote:
> Thanks! Moving the setPadding() into getView() works perfectly. I
> guess I hadn't read enough custom view examples to realize that it is
> typical for getView() to modify the view. In fact, I didn't even know
> it was possible.
>
> Thanks again,
> Greg
>
> On Sep 1, 12:50 pm, Dianne Hackborn <hack...@android.com> wrote:
>
> > Then set it in getView(). It's a typical pattern to fiddle with views in
> > getView() to have the exact layout appropriate for the data being displayed
> > -- that's kind-of a main point of getView().
>
> > On Tue, Sep 1, 2009 at 9:30 AM, greg <sep...@eduneer.com> wrote:
>
> > > The required indentation is variable, not known until the row data is
> > > retrieved during the ListAdapter's getView(). I'm not looking for a
> > > way to re-layout the view (which setPadding() apparently does), just a
> > > simple way to indent text within a TextView. I think the approach of
> > > pre-padding the text with spaces will work ... although I'm curious
> > > about how my hierarchy line drawing in the indentation will be
> > > affected by marquee scrolling text.
>
> > > On Sep 1, 11:33 am, Romain Guy <romain...@google.com> wrote:
> > > > You can call setPadding(), but just don't call it from onDraw(). Why
> > > > do you want to call it from onDraw()? It has to be called only once.
>
> > > > On Tue, Sep 1, 2009 at 7:40 AM, greg<sep...@eduneer.com> wrote:
>
> > > > > Wise Guy. :*)
>
> > > > > If there is no easy method to add left indentation without causing an
> > > > > onDraw()loop, I'll pre-pad the char buffer with spaces and use setText
> > > > > (char[] text, int start, int len) to select the correct amount of left
> > > > > spacing. I thought I might be overlooking a simpler approach.
>
> > > > > By the way, in spite of my initial ignorance of Java and Eclipse and
> > > > > Android, developing an Android application has been a pleasure. (Now,
> > > > > I'm only partially ignorant ... which I suppose is the best anyone can
> > > > > hope for in any situation. :*) Writing system software for new
> > > > > hardware displaying a new UI employed by new developers is a rather
> > > > > bold venture. Congratulations on pulling it off so well.
>
> > > > > Best regards,
> > > > > Greg Sepesi
>
> > > > > On Sep 1, 2:17 am, Romain Guy <romain...@google.com> wrote:
> > > > >> Don't set the padding in onDraw() :)
>
> > > > >> On Mon, Aug 31, 2009 at 10:32 PM, greg<sep...@eduneer.com> wrote:
>
> > > > >> > My application uses a ListView to display a custom TextView as a
> > > tree
> > > > >> > view, with the text indented according to the item's depth in the
> > > > >> > tree. In that indentation, a line drawing denotes the hierarchy.
> > > > >> > I
> > > > >> > tried to use the setPadding() within onDraw() to indent the text,
> > > but
> > > > >> > that is causing a seemingly endless onDraw()loop... perhaps due to
> > > > >> > layout recalculations. Is there another easy method of adding left
> > > > >> > indentation to text that doesn't cause this drawingloopproblem?
>
> > > > >> > My onDraw() and row layout XML are as follows:
>
> > > > >> > @Override
> > > > >> > protected void onDraw(Canvas canvas) {
>
> > > > >> > // some canvas.drawPath() drawn lines denoting tree hierarchy
>
> > > > >> > // unsuccessful attempt at indenting text according to mLineDepth
> > > > >> > (set in ListAdapter)
> > > > >> > setPadding(mLineDepth * PIXELS_PER_DEPTH_LAYER +
> > > > >> > PIXELS_OFFSET_TO_NAME,0,0,0);
>
> > > > >> > super.onDraw(canvas);
> > > > >> > }
>
> > > > >> > - - -
>
> > > > >> > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/
> > > > >> > android"
> > > > >> > android:orientation="horizontal"
> > > > >> > android:layout_width="fill_parent"
> > > > >> > android:layout_height="fill_parent">
>
> > > > >> > <view
> > > > >> > class="com.mycom.myapp.TClass$MyUnderlinedTextView"
> > > > >> > android:id="@+id/tlist_utext"
> > > > >> > android:layout_weight="1"
> > > > >> > android:layout_width="0dip"
> > > > >> > android:layout_height="fill_parent"
> > > > >> > android:textSize="22dip"
> > > > >> > android:singleLine="true"
> > > > >> > android:ellipsize="marquee"
> > > > >> > android:background="@android:color/transparent" />
>
> > > > >> > <ImageView android:id="@+id/icon"
> > > > >> > android:layout_width="48dip"
> > > > >> > android:layout_height="48dip" />
>
> > > > >> > </LinearLayout>
>
> > > > >> > - - -
>
> > > > >> > Best regards,
> > > > >> > Greg
>
> > > > >> --
> > > > >> Romain Guy
> > > > >> Android framework engineer
> > > > >> romain...@android.com
>
> > > > >> Note: please don't send private questions to me, as I don't have time
> > > > >> to provide private support. All such questions should be posted on
> > > > >> public forums, where I and others can see and answer them
>
> > > > --
> > > > Romain Guy
> > > > Android framework engineer
> > > > romain...@android.com
>
> > > > Note: please don't send private questions to me, as I don't have time
> > > > to provide private support. All such questions should be posted on
> > > > public forums, where I and others can see and answer them
>
> > --
> > Dianne Hackborn
> > Android framework engineer
> > hack...@android.com
>
> > Note: please don't send private questions to me, as I don't have time to
> > provide private support, and so won't reply to such e-mails. All such
> > questions should be posted on public forums, where I and others can see and
> > answer them.
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