I implemented a scrollable TextView, named ScrollTextView before Android 1.1R1 with the marquee feature for TextView. It used android.widget.Scroller and attached TextPaint. Here's the source code: http://bear-polka.blogspot.com/2009/01/scrolltextview-scrolling-textview-for.html
It's glad to see that marquee is supported. However you could not make the TextView scrolling if you only set these 2 attributes, android:ellipsize and android:marqueeRepeatLimit. According to my testing, at least the following 3 attributes shall be set: android:ellipsize="marquee" android:focusable="true" android:singleLine="true" And the TextView shall be focused while running. Moreover, I found 2 limitations in current marquee implementation: 1. Never scroll if the TextView does not get the focuse; 2. The scrolling is odd because the round of scrolling begins from the left side while end at the right side. It looks like the animation is reset. So far, I think my implementation of ScrollTextView is better for the marquee feature. :) On 3月10日, 下午1时55分, soniya <soniy...@gmail.com> wrote: > I am talking about this API Demo: API Demos -> Text -> Marquee > > I tried selecting the text....but it does not move...not even a > millimeter :( > > Am I missing something?? > > On Mar 4, 9:28 pm, Romain Guy <romain...@google.com> wrote: > > > The marquee starts when a TextView gets focused/selected. It is used > > throughout the UI in 1.1, for instance in the list of all apps in > > Home. > > > On Tue, Mar 3, 2009 at 11:00 PM, soniya <soniy...@gmail.com> wrote: > > > > I have downloaded the latest SDK i.e. Android 1.1 but I am not able to > > > run the API demo for Marquee. > > > It does not work ....The text remain static. > > > Do I need to do any setting or something to view that? > > > > On Jan 31, 1:51 am, Romain Guy <romain...@google.com> wrote: > > >> Note that cupcake will have themarqueefeature on TextView. > > > >> On Fri, Jan 30, 2009 at 12:31 PM, Zach Hobbs <ho...@helloandroid.com> > > >> wrote: > > > >> > You can create a custom singleLine TextView and animate it by creating > > >> > a loop > > >> > and calling scrollBy(x,y) incrementing/decrementing the x value. > > > >> > -Zach > > > >> > On Thursday 29 January 2009 7:47:49 pm Rodrigo wrote: > > >> >> HI, > > > >> >> What is the best way to implement scrolling text (with behavior > > >> >> similar to that of HTML tag 'marquee')?? > > > >> >> I've been trying to do this using TextViews + Animations but I'm > > >> >> having troubles primarily because of sizing issues. If my text is long > > >> >> enough that it exceeds the screen width, it won't be drawn completely > > >> >> (it's size will be chopped at screen width). Thus, when I animate it > > >> >> from right to left, only a part of the text will be displayed. This > > >> >> happens if I allow a maximum of 1 line in my TextView, because > > >> >> otherwise it makes the TextView have multiple lines. If I make it > > >> >> horizontally scrollable, the same 'chopped-off' behavior is seen. > > > >> >> I think this happens because the TextView's parent imposes some > > >> >> restrictions on its size. Is there a way to bypass these restrictions > > >> >> so that the TextView is 'drawn' even if parts of it will be off- > > >> >> screen? > > > >> >> If that's not possible, what's an alternative way of implementing this > > >> >> behavior? > > > >> >> Thanks! > > > >> > -- > > > >> > Zach Hobbs > > >> > HelloAndroid.com > > >> > Android OS news, tutorials, downloads > > > >> -- > > >> 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 > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
