Re: [xmlvm-users] Maths

[Wolfgang K. <wol...@xm...>]

The problem is that right now there is no Objective C wrapper for
java.lang.CharSequence. How did you (Java) compile your code? Did you
compile it against the regular Android SDK? That might cause the problem
since the original setText() expects a CharSequence. Try compiling it
against XMLVM's compatibility library instead.

-- Wolfgang


Joseph Rukshan Fonseka wrote:
> So how come the code below fails for me? It gives me this error:
> It seems to want to use java_lang_CharSequence.h, how can I avoid this?
>
> com_home_imageviewer_ImageViewer.m:8:35: error:
> java_lang_CharSequence.h: No such file or directory
> com_home_imageviewer_ImageViewer.m: In function
> ‘-[com_home_imageviewer_ImageViewer onCreate___android_os_Bundle:]’:
> com_home_imageviewer_ImageViewer.m:132: warning:
> ‘android_widget_Button’ may not respond to
> ‘-setText___java_lang_CharSequence:’
> com_home_imageviewer_ImageViewer.m:132: warning: (Messages without a
> matching method signature
> com_home_imageviewer_ImageViewer.m:132: warning: will be assumed to
> return ‘id’ and accept
> com_home_imageviewer_ImageViewer.m:132: warning: ‘...’ as arguments.)
> make: *** [obj/com_home_imageviewer_ImageViewer.o] Error 1
>
>
> public class ImageViewer extends Activity {
>     /** Called when the activity is first created. */
>     @SuppressWarnings("deprecation")
> @Override
>     public void onCreate(Bundle savedInstanceState) {
>         super.onCreate(savedInstanceState);
>
>         
>
>         AbsoluteLayout layout = new AbsoluteLayout(this);
>         layout.setLayoutParams(new
> LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
>         ImageView viewer = new ImageView(this);    
>         viewer.setImageResource(R.drawable.cat);
>         layout.addView(viewer, new
> AbsoluteLayout.LayoutParams(AbsoluteLayout.LayoutParams.WRAP_CONTENT,
> AbsoluteLayout.LayoutParams.WRAP_CONTENT, 0, 100));
>         Button text = new Button(this);
>         layout.addView(text, new
> AbsoluteLayout.LayoutParams(AbsoluteLayout.LayoutParams.WRAP_CONTENT,
> AbsoluteLayout.LayoutParams.WRAP_CONTENT, 0, 0));
>         setContentView(layout);
>
>         
>
>         text.setText("fffff"));
>     }
> }
>
>
> On 12/10/2009, at 10:05 PM, Wolfgang Korn wrote:
>
>> Currently our Android compativility library only has a method
>> TextView.setText(String). With respect to the allowed input types
>> this less flexible than the original Android method but it works.
>> Since java.lang.String implements java.lang.CharSequence code using
>> this method compiles with our compat lib as well as with the regular
>> Android SDK.
>>
>> -- Wolfgang
>>
>> Joseph Rukshan Fonseka wrote:
>>> Thanks that worked. How does one use the TextView.setText()  thats
>>> already defined in the TextWidget? 
>>>
>>> When it cross compiles to iphone I get this error, I understand that
>>> is because android's setText takes a CharSequence. But just
>>> wondering how the setText in compat library can be called.
>>>
>>> com_home_imageviewer_ImageViewer.m:9:35: error:
>>> java_lang_CharSequence.h: No such file or directory
>>> com_home_imageviewer_ImageViewer.m: In function
>>> ‘-[com_home_imageviewer_ImageViewer onCreate___android_os_Bundle:]’:
>>> com_home_imageviewer_ImageViewer.m:164: warning:
>>> ‘android_widget_Button’ may not respond to
>>> ‘-setText___java_lang_CharSequence:’
>>> com_home_imageviewer_ImageViewer.m:164: warning: (Messages without a
>>> matching method signature
>>> com_home_imageviewer_ImageViewer.m:164: warning: will be assumed to
>>> return ‘id’ and accept
>>> com_home_imageviewer_ImageViewer.m:164: warning: ‘...’ as arguments.)
>>> make: *** [obj/com_home_imageviewer_ImageViewer.o] Error 1
>>>
>>>
>>>
>>> On 12/10/2009, at 12:55 AM, Wolfgang Korn wrote:
>>>
>>>> It seems that the pop2 instruction is used to clean up the stack
>>>> here. Your code computes minimum and maximum of two values but
>>>> simply ignores the computed value. To remove this computation
>>>> result pop2 seems to be used. Until we implement the missing
>>>> instruction you can simply assign the results from the calls to
>>>> Math.min and Math.max to variables. In my case this removed the
>>>> pop2 from the class file.
>>>>
>>>> One last thing: Could you please upload a patch file for your
>>>> additions to Math.m/h to our review site
>>>> (http://xmlvm-reviews.appspot.com/) or create a patch and send that
>>>> instead of sending the whole files? This makes it easier to merge
>>>> in case if concurrent modifications.
>>>>
>>>> -- Wolfgang
>>>>
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>>
>
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