Hi Dianne. Thanks very much, almost there.
I understand the procedure, it would do what I want, but I run into an exception: D/NewsRobDefaultExceptionHandler( 1839): Caused by: java.lang.UnsupportedOperationException: Can't convert to color: type=0x2 D/NewsRobDefaultExceptionHandler( 1839): at android.content.res.TypedArray.getColor(TypedArray.java:273) D/NewsRobDefaultExceptionHandler( 1839): at android.graphics.drawable.GradientDrawable.inflate(GradientDrawable.java:647) D/NewsRobDefaultExceptionHandler( 1839): at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:788) D/NewsRobDefaultExceptionHandler( 1839): at android.graphics.drawable.Drawable.createFromXml(Drawable.java:729) D/NewsRobDefaultExceptionHandler( 1839): at android.content.res.Resources.loadDrawable(Resources.java:1690) This happens when using it the way we described here in a drawable xml. However to better understand the error I used it on other attributes and when using it on the background attribute of a View it works. Maybe this approach is incompatible with drawables that are expressed in xml? Btw. Is there any way to get the actual #rgb string for a color from a theme? Cheers, Mariano On Tue, May 11, 2010 at 8:02 AM, Dianne Hackborn <hack...@android.com>wrote: > You need to define an attribute for your value: > > <attr name="myColor" format="color" /> > > Then make a custom theme that supplies a value for it: > > <style name="MyTheme" parent="android:Theme"> > <item name="com.my.package:myColor">#ff808080</item> > </style> > > And now you can reference that value from other XML: > > <shape xmlns:android="http://schemas.android.com/apk/res/android > " > android:shape="rectangle"> > <gradient android:startColor="?com.my.package:myColor" > > android:endColor="#66FFFFFF" > android:angle="270" /> > </shape> > > > Note that "com.my.package" is your manifest's package name. > > Also I just wrote this by hand so I won't guarantee it is completely right. > :} > > On Mon, May 10, 2010 at 11:02 AM, Mariano Kamp <mariano.k...@gmail.com>wrote: > >> Hmmh, also no answer to this question on themes. Maybe the answer cannot >> be given with two lines? So let me explain what I would expect step by step >> and you stop me were I deviate from the Golden Path? I'll try yes/no >> questions. >> >> In the simplest terms I would expect that in every place I can specify a >> color in RGB (#ffff) I could also specify a symbolic name instead. This >> should work like @color/xyz, but with one more level of indirection that >> lets me switch between themes, like dark and light. >> >> Is that possible? >> >> I would expect those themes to be applicable to (a) widgets, (b) drawables >> (see the mentioned example) and (c) when I need to style something myself >> like HTML. Are (a) - (c) possible? >> >> Furthermore I would expect that I could define style keys myself, but I >> got the impression that only keys from the "android" namespace can be used? >> That lead me to believe that you can't define abstract colors, but only >> styles for specific attributes used in the widgets' implementations. >> >> And again, if there is any meaningful documentation I would be happy to >> read it. Just send me the link or name of the book. >> >> >> On Sat, May 8, 2010 at 3:26 PM, Mariano Kamp <mariano.k...@gmail.com>wrote: >> >>> Hi, >>> >>> I have trouble >>> (example<http://groups.google.com/group/android-developers/browse_thread/thread/5b4ce3e49a1b63d2/>) >>> wrapping my head around styles/themes. Can somebody help me or point me to >>> actual documentation? >>> >>> Let's say I have a drawable that I want to use as the background of a >>> layout: >>> >>> <shape xmlns:android="http://schemas.android.com/apk/res/android"; >>> android:shape="rectangle"> >>> <gradient android:startColor="#9F9FA4" android:endColor="#66FFFFFF" >>> android:angle="270" /> >>> </shape> >>> >>> >>> Now I want to have a dark and a light theme. Depending on the chosen theme >>> I want to have a different value for startColor and endColor. How do I do >>> that? I am aware of extending themes, but what do I put into the items? How >>> do I reference those new values then? >>> >>> >>> Cheers, >>> >>> Mariano >>> >>> >> -- >> 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<android-developers%2bunsubscr...@googlegroups.com> >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en >> > > > > -- > 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. > > -- > 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<android-developers%2bunsubscr...@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
