Hello
The getView() call for arrayadapter is blank. Is there a document
which describes how it works?
I have overridden it in order to change the text color of items in a
list view. So far, I can't find any code which works.
I've tried this:
public class MyAdapterT extends ArrayAdapterT {
1:
http://developer.android.com/reference/android/widget/Adapter.html#getView(int,
android.view.View, android.view.ViewGroup)
2:
Yes, you're supposed to call the base class in your case, the ArrayAdapter
will be doing most of the work for you, inflating new or reusing existing
row layouts.
3:
2012/1/5 John Davis davi...@gmail.com
The getView() call for arrayadapter is blank. Is there a document which
describes how it works?
The docs are your friend:
http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/List4.html
I don't know if I am
Hello Kostya,
Thanks for the reply.
On Thu, Jan 5, 2012 at 11:39 AM, Kostya Vasilyev kmans...@gmail.com wrote:
2:
Yes, you're supposed to call the base class in your case, the ArrayAdapter
will be doing most of the work for you, inflating new or reusing existing
row layouts.
Ok. I think I
Hello
I don't have resource id's for the individual row items.
You should, it's your project.
Super. That might help, but this example
http://developer.android.com/resources/tutorials/views/hello-listview.html
does not use id's for the individual list items. How would I do that?
John
--
Just to clarify 2:
I meant calling super.getView from your adapter's getView, assuming it's a
subclass of ArrayAdapter.
Do not call adapter.getView from outside the adapter's code, that's
meaningless.
Now the view ids What layout id do you use to initialize the adapter?
Perhaps
On Thu, Jan 5, 2012 at 10:49 AM, John Davis davi...@gmail.com wrote:
Super. That might help, but this example
http://developer.android.com/resources/tutorials/views/hello-listview.html
does not use id's for the individual list items. How would I do that?
Hello
On Thu, Jan 5, 2012 at 11:53 AM, Kostya Vasilyev kmans...@gmail.com wrote:
Just to clarify 2:
I meant calling super.getView from your adapter's getView, assuming it's a
subclass of ArrayAdapter.
Do not call adapter.getView from outside the adapter's code, that's
meaningless.
That
On Thu, Jan 5, 2012 at 12:04 PM, John Davis davi...@gmail.com wrote:
Now the view ids What layout id do you use to initialize the adapter?
Perhaps android.R.layout.something?
I did :
MyAdapterString adapter = new
MyAdapterString(this,android.R.layout.simple_list_item_1,
On Thu, Jan 5, 2012 at 11:04 AM, John Davis davi...@gmail.com wrote:
Or, is there a way to patch up this code to do what I want?
Yes.
It seems pretty trivial to do.
It is once you get the hang of it.
I don't understand why the hooks do not exist for what i want to do.
They do, but
Aha!
android.R.layout.simple_list_item_1 is defined in the platform, you can
find it under your Android sdk
directory/platforms/platform-version/data/res/layout (that data/res is
very useful to look up things):
The whole layout is a TextView, and its id is @android:id/text1, which,
on the Java
Kostya,
Tip of the hat to you. That worked. It will set all the items to
blue text. I appreciate your help a lot.
Now, is there a simple way to do this selectively? I saw you could
tag items and then look based upon a tag. Perhaps that will work? I
would prefer that the class which creates
Ok, great.
One simple thing you can do is to check the item's position, e.g. set odd
items to blue and even items to red (just to pick an example).
Beyond that, consider creating a proper data item class.
The adapter's getView would then examine the data item at the requested
position and make
On Thu, Jan 5, 2012 at 12:44 PM, Kostya Vasilyev kmans...@gmail.com wrote:
Ok, great.
One simple thing you can do is to check the item's position, e.g. set odd
items to blue and even items to red (just to pick an example).
The only logic which knows the desired color is the main view which
On Thu, Jan 5, 2012 at 12:43 PM, John Davis davi...@gmail.com wrote:
The only logic which knows the desired color is the main view
which populated the list view.
Then pass the information along as you populate your views.
It seems that android can not do what I desire.
More likely, you
Correct.
Since Android is not true Java, you can't call methods of one object from
another object.
An unfortunate limitation that is hopefully fixed some day (version 19.0?
Peppermint Pattie?)
/tongue firmly planted in cheek
You can call some methods of the activity from the adapter, or you
Yes, I would think it is possible, but not in this version. Its
possible to set all line items to the same value. However, its not
possible to set the colors on a case by case value using the provided
api.
This code will set all the line items to blue:
public View getView(int position,
Yes it is possible to set colors on a case by case basis using the provided
API.
It's just that the provided API is not structured the way you expect.
Create a data item class with fields to base the logic on
Extend BaseAdapter
Override getView
Check the data item fields and make the decision
On Thu, Jan 5, 2012 at 1:07 PM, John Davis davi...@gmail.com wrote:
Yes, I would think it is possible, but not in this version. Its possible
to set all line items to the same value. However, its not possible to set
the colors on a case by case value using the provided api.
Yes it is. Please
Sadly I appreciate your help, but I don't think it will work. I've
already done an override of the getview call. The higher level logic
which knows which items can specify the draw color can not communicate
it to the lower level. The code samples, i have seen set all the
colors in a list. I
Hello Treking,
On Thu, Jan 5, 2012 at 2:17 PM, TreKing treking...@gmail.com wrote:
On Thu, Jan 5, 2012 at 1:07 PM, John Davis davi...@gmail.com wrote:
Yes, I would think it is possible, but not in this version. Its possible
to set all line items to the same value. However, its not possible
Please post the full stack trace of your exception.
On Thu, Jan 5, 2012 at 11:28 AM, John Davis davi...@gmail.com wrote:
Hello Treking,
On Thu, Jan 5, 2012 at 2:17 PM, TreKing treking...@gmail.com wrote:
On Thu, Jan 5, 2012 at 1:07 PM, John Davis davi...@gmail.com wrote:
Yes, I would think
On Thu, Jan 5, 2012 at 1:24 PM, John Davis davi...@gmail.com wrote:
The higher level logic which knows which items can specify the draw color
can not communicate it to the lower level.
Yes it can. Unless this is a specific design restriction you've imposed,
there is nothing in the language or
Hello Romain Guy,
How would I post the full stack trace? The logcat output?
John
On Thu, Jan 5, 2012 at 2:30 PM, Romain Guy romain...@android.com wrote:
Please post the full stack trace of your exception.
On Thu, Jan 5, 2012 at 11:28 AM, John Davis davi...@gmail.com wrote:
Hello Treking,
This is from the debug window in the call stack output.
Thread [1 main] (Suspended (exception RuntimeException))
ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord,
Intent) line: 2663
ActivityThread.handleLaunchActivity(ActivityThread$ActivityRecord,
Intent)
This is not the stack trace generated by the exception. Look at the
logs and find the complete stack trace with the type of exception
generated and we'll get a better understanding of what's going on.
On Thu, Jan 5, 2012 at 11:34 AM, John Davis davi...@gmail.com wrote:
This is from the debug
Please allow the exception to continue, then use LogCat to examine the
full stack trace. You will see two stanzas for the stack trace, the
second one prefixed by Caused by:. Your code will appear in the
Caused by: portion of the stack trace.
2012/1/5 John Davis davi...@gmail.com:
This is from
2012/1/5 John Davis davi...@gmail.com
This is from the debug window in the call stack output.
As you were told in your other thread, that is the wrong stack. Look for
Caused by...
-
TreKing
2012/1/5 John Davis davi...@gmail.com
I'm not blaming anyone or the api. I am simply saying it has a bug.
Someone might want to look into it.
Jumping to the conclusion that it is a bug is blaming the API.
It crashed! Can't be my fault! It's a bug!
Did you even debug your issue?
Yes it
That's the debugger's stack trace, not the logcat stack trace.
Press F8 a few times until your device displays the application
stopped unexpectedly.
Then check the logcat panel in Eclipse and post the entire stack trace,
especially the stuff after Caused by:
-- Kostya
5 января 2012 г.
Hello Treking, Kostya, Romain-Guy,
Ok, I removed the breakpoint, ran it, hit F8 until I got logcat
output. I selected all the red/orange text and exported to a textfile.
This is the result. (I hope I am giving you the answer you request)
01-05 14:57:39.163: W/dalvikvm(9183): threadid=1: thread
6 января 2012 г. 0:02 пользователь John Davis davi...@gmail.com написал:
Hello Treking, Kostya, Romain-Guy,
01-05 14:57:39.308: E/AndroidRuntime(9183): Caused by:
java.lang.ClassCastException: java.lang.String
01-05 14:57:39.308: E/AndroidRuntime(9183): at
Well it goes to the adapter, which will return Objects, which you then
must cast to the appropriate type, in your case it's obviously a
String. As RomainGuy (whom you should listen to, right, as he is a
framework engineer) said in the previous thread, you get the actual
views from getChild, this
Then the problem is exactly what others have described earlier in this
thread. Your list adapter contains strings (and you should know what
it contains since you created it) and you attempt to cast one of these
strings into a View.
On Thu, Jan 5, 2012 at 12:02 PM, John Davis davi...@gmail.com
Hello
Ok. So I appreciate the help. Here is the summary:
for (int i=0;icount;i++) {
// If it is the 2nd or 5th item, tag it so that it will be
displayed in blue.
if (i==2 || i==5) {
listCount = adapter.getCount();
On Thu, Jan 5, 2012 at 2:18 PM, John Davis davi...@gmail.com wrote:
Hello
Ok. So I appreciate the help. Here is the summary:
for (int i=0;icount;i++) {
// If it is the 2nd or 5th item, tag it so that it will be
displayed in blue.
if (i==2 || i==5)
Hello Kris,
Yes, that is a good way to put it. Thanks for the info.
John
On Thu, Jan 5, 2012 at 3:37 PM, Kristopher Micinski krismicin...@gmail.com
wrote:
On Thu, Jan 5, 2012 at 2:18 PM, John Davis davi...@gmail.com wrote:
Hello
Ok. So I appreciate the help. Here is the summary:
In fact, the docs page for Adapter:
http://developer.android.com/reference/android/widget/Adapter.html
... says this:
An Adapter object acts as a bridge between an
AdapterViewhttp://developer.android.com/reference/android/widget/AdapterView.html
and
the underlying data for that view. The
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