Canvas INSIDE of a Layout???

by Ryan Detwiler » Tue, 09 Nov 2010 02:23:42 GMT


Sponsored Links
 Hellooo.. I need to have a dynamically updateable canvas inside of a
layout. I would prefer having some sort of method to draw to an
imageview, which is displayed in red on the screenshot. It's intended
to be a graph that updates every 5 times/second or so. Any ideas??
I've been searching for hours and can't seem to find some sort of
concrete example. they all make the entire screen a canvas, which
doesn't allow for layouts. Please help, and thanks in advance! :)

 http://i220.photobucket.com/albums/dd15/memphetic/CanvasExample.png 

--



Canvas INSIDE of a Layout???

by Stephen Jungels » Tue, 09 Nov 2010 03:01:38 GMT


 This would be an example of creating a custom component.  It's covered
very well in the docs:
 http://developer.android.com/guide/topics/ui/custom-components.html 

The requirement for timed updates can be filled by your activity
calling invalidate() on the custom view when needed.

--SJ



>


Sponsored Links


Other Threads

1. Problem playing video

hi all
I'm getting crash signatures when trying to play a .3gp or .mp4 file.

here is that

INFO/DEBUG(494): pid: 606, tid: 644  >>> org.apache.android <<<
INFO/DEBUG(494): signal 11 (SIGSEGV), fault addr 00000050
INFO/DEBUG(494):  r0 0011d2c0  r1 00000000  r2 00004b64  r3 42c8de88
INFO/DEBUG(494):  r4 00000000  r5 001603b8  r6 00161e60  r7 00000224
INFO/DEBUG(494):  r8 00004b64  r9 42c8de88  10 00002340  fp 00003124
INFO/DEBUG(494):  ip 00000001  sp 42c8de28  lr afe0e448  pc a7393e98
cpsr 00000010
INFO/DEBUG(494):          #01  pc a7393e98  /system/lib/libpv.so
INFO/DEBUG(494):          #01  lr afe0e448  /system/lib/libc.so
INFO/DEBUG(494): stack:
INFO/DEBUG(494):     42c8de00  a747f650  /system/lib/libpv.so
INFO/DEBUG(494):     42c8de04  00161e60  [heap]



can any one help me to sort out this problem
my code is similar to the videoplayer.java code published

thanx in advance

--~--~---------~--~----~------------~-------~--~----~

2. Write PNG to PIcture Directory (FileOutputStream)

Hello all,
How can I write an image so that it shows up under 'Pictures'?

I've got a FileOutputStream like this:
--Mypic is a valid bitmap.

try {

                 FileOutputStream stream = super.openFileOutput("picture.png",
MODE_PRIVATE);


             Mypic.compress(CompressFormat.PNG, 100, stream);
             stream.flush();
             stream.close();
     }catch(Exception e) {Log.e("MyLog", e.toString());  }

Any help is appreciated.

Josh Beck
--~--~---------~--~----~------------~-------~--~----~

3. :: wat is the limit for the size of the .apk file

4. Not able to enter full phone functionality when no SIM - why?

5. Hi... Issue while accessing the content provider

6. .getSelectedItemId() always selecting 0 when using the touch screen

7. Deleting old email's