15
Jul
2011
MXML: “true && true” error
Stumbled across this strange error while doing some development. I’ve needed to determine the enable function of a button based on two boolean conditions and as a result created the following bit of code:
<com:Component enabled=”{booleanA && booleanB}”/>
The compiler didn’t like what I’ve put together and threw the following error: The entity name must immediately follow the ‘&’ in the entity reference.
At first I litteraly thought that I’ve forgotten how to code and trivially tried a simple if statement in a <fx:Script> tag – that worked without a problem. I’ve also tried to see if the or ”||” operator worked within the enabled attribute – which it did. My last thought before searching for a solution online was that the latest version of Adobe Flex had a bug in it.
Some of the solution that I’ve discovered are:
- use ;& instead
- use (booleanA) ? (booleanB):false
- use !(!active1 || !active2)
I found the third option to be quite amusing though in general the root cause of the problem is the XML parsing of the MXML code. Once you understand it should be straight forward.
21
Jan
2011
SAP: ABAP: Subroutine does not exist – bug
Scenario: you’re editing your code and when you try to double click on a previously defined subroutine you get a popup stating that it doesn’t exist. You check and confirm that the subroutine is included, the report compiles and runs properly.
Resolution: to fix the problem do the following steps:
- Click Utilities
- Click Update Navigation Index
The report will be regenerated and your problem should be solved.
16
Jan
2011
Adobe Flex: smooth out the images – scaleContent
When you’re dealing with a situation that requires the use of the following image settings:
width="100%"
height="100%"
scaleContent="true"
maintainAspectRatio="true"
You can find your self in a situation where the loaded content will result in a pixelated bitmap. Simply add a complete event handler to your image component and update the contents of the event in the following way:
var lv_btmp:Bitmap = ((event.target as Image).content as Bitmap);
if ( lv_btmp != null )
lv_btmp.smoothing = true;
this will smooth out the image that you have loaded.
14
Dec
2010
ABAP: link company code and controlling area
Quick way to find a controlling area derived from the company code is to use the following BAPI_CONTROLLINGAREA_FIND. Examining further you will see that there is a reference to table TKA02 with parameters of company code and business area.
13
Dec
2010
ABAP: how to switch to a classic screen painter [4.6C]
Simple: select Utilities and navigate to the Screen Painter tab. There you will see a check box corresponding to the desired action.
28
Nov
2010
FLEX: convert HTML format to RichText
If you are working with rich text editors you will run in to a situation where you have to format an HTML string to RichText value.
Following code can accomplish this:
gc_ta_bio.textFlow =
TextConverter.importToFlow( "<h1>Your String</h1>,
TextConverter.TEXT_FIELD_HTML_FORMAT )
Where the MXML control will look something like this:
<s:RichEditableText id="gc_ta_bio" />
22
Nov
2010
SAP: ABAP: ALV grid color scheme
Here’s a list of colors that you can use to color your ALV grid.
To actually use create a field of 4 characters and use ‘CX00′ where X is the number specified above.
22
Nov
2010
SAP: transport classes
If you know how to transport copies of objects then you are half way there. So a quick and easy way to figure out what to put in to your transport [Change Object List] perform the following steps:
- go to SE24
- type in your class name
- click Goto – Object Directory Entry
At this point you should see your object definition entries: R3TR – CLAS – <CLASS NAME>. Grab that and move your transport.
20
Nov
2010
SAP: Generating a Class Actor – CREATE_PERSISTENT
Been playing with the persistent objects and finally figured a part that involves generating a CREATE_PERSISTENT method in the Base agent class.
To do this
- Go to Persistence Representation
- Select Utilities – Generate – Class Agent – Class
- Click the Yes button
That’s all.
18
Oct
2010
Flash Cross-Domain policies
A nice introduction to what the cross-domain policy are all about
