[android-developers] Re: ImageButton onClick or onKeyDown?

[Holger]

On Mar 28, 3:02 pm, Paolo  wrote:
> is it possible to use onKeyDown() for an ImageButton instead of
> onClick() to capture the user's click on this imagebutton?
>
> what's the difference?

Difference #1:
Press (->onKeyDown()), hold a while then release (->onClick()).

Difference #2:
Press (->onKeyDown()), drag then release (no onClick()).

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[android-developers] Re: howto extend LinearLayout?

[Holger]

I finally foudn the answer myself. The parameters to layout are
relative to
the parent and should hence not be passed down to the children.

The following works fine:

@Override
protected void onLayout( boolean changed, int l, int t, int r, int b )
{
         int len = getChildCount();
         int w = ((r-l)-(len-1)*PADDING)/len;
         int pos = 0;
         for( int i=0; ihttp://groups.google.com/group/android-developers?hl=en

[android-developers] howto extend LinearLayout?

[Holger]

Hi there,

I'm am trying to learn how to create LayoutGroups. For a start, I
created MyLinearLayout which is supposed to force all children into
same width (yes, there is layout_weight, but that's beside the
point :-)

However, the children won't show up. What am I missing here?

public class MyLinearLayout extends LinearLayout {

public MyLinearLayout(Context context) {
super(context);
}

public MyLinearLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}

private final static int PADDING = 2;

@Override
protected void onLayout( boolean changed, int l, int t, int r, int
b ) {
//super.onLayout( changed, l, t, r, b );
//if( !changed ) return;
int len = getChildCount();
int w = ((r-l)-(len-1)*PADDING)/len;
int pos = l;
for( int i=0; ihttp://groups.google.com/group/android-developers?hl=en

[android-developers] Re: TableLayout, Rotating

[Holger]

While I am at it: How can I enforce equal width on table columns?

Is there a way to do in in layout/*.xml or do I have to render the
content
of my table programatically (getting screen dimensions, and creating
the content of the table calls with computed width)

Regards,
  Holger

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[android-developers] TableLayout, Rotating

[Holger]

Hi there,

I am new to Android development and I stumbled across two questions:

1.) How can I span a TableCell across two rows in order to achieve the
following
Layout (XX shall be one cell)?

1 2 X X 3 4
5 6 X X 7 8
9 0 1 2 3 4

2.) The emulator switches properly from portrait to landscape via
(NumPad+Home) but it does not switch back. Is this a bug in the
emulator? The app has no special code regarding screen changes
beside two layout*/main.xml files. (Android 2.1 in Eclipse Linux/i386)

Regards,
  Holger

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