Am 17.02.2012 10:23, schrieb Felipe Monteiro de Carvalho:
On Fri, Feb 17, 2012 at 9:11 AM,<[email protected]> wrote:
Android uses XML files to specify the layout. This is the recommended way by
Google. You can build the GUI in code as well, but then you're pretty much
in uncharted territory.
It is pretty trivial to build the UI without XML. I never used the XML
part while programming for Android. For example (in pseudo-code):
procedure TMyActivity.OnCreate;
var
layout: TAbsoluteLayout;
params: TAbsoluteLayout_LayoutParams;
tv: TTextView;
et: TTextView;
btn: TButton;
ClickCount: Integer = 0;
begin
// Prepares the UI of the program
layout := TAbsoluteLayout.Create;
tv := TTextView.Create;
tv.setText('The first Pascal Android application =)');
params := TAbsoluteLayout_LayoutParams.Create(320, 300, 0, 120);
layout.addView(tv, params);
params.Free;
et := TEditText.Create;
et.setText('edit me please');
params := TAbsoluteLayout_LayoutParams.Create(320, 50, 0, 0);
layout.addView(et, params);
params.Free;
btn := TButton.Create;
btn.setText('Go!');
btn.setOnClickListener(@buttonClickCallback);
params := TAbsoluteLayout_LayoutParams.Create(320, 50, 0, 60);
layout.addView(btn, params);
params.Free;
Activity.setContentView(layout);
end;
This part is rather easy, but it gets more interesting when using menus
or the views for items in list views.
Also the XML layouts allows for a more clean seperation of layout and
code ;)
Regards,
Sven
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