On 07.01.2017 03:12, Jon Foster wrote: > I've been working on building an app for Android using the FPC's JVM > target. I'm using fpc 3.0.0. I've run into a couple of things that I'm > not sure if they're bugs or I just don't know what I'm doing. I was > using fpc to avoid having to learn Java and have discovered that's not > entirely possible. :-/ > > The first issue I ran into is this: > > procedure Cppp1Activity.onResume; > begin > inherited onResume; > with AAAlertDialog.InnerBuilder(self) do begin > setTitle(R.strings.app_name); > end; > end; > > Cppp1Activity is a descendant of AAActivity. I'm overriding the onResume > method. The problem I ran into was with the AAAlertDialog.InnerBuilder > class. I can create an object of that class without incident. However if > I try to call any of the methods (tried several) I get a "Class Cast" > exception reported in the Android log and the app goes *poof*. I also > tried just chaining the call like > "AAAlertDialog.InnerBuilder(self).setTitle(R.strings.app_name);", and I > tried this in the "Activity.onCreate" method with the same result. And > yes "R.strings.app_name" points to an actual resource and I generated a > "resources.pas" with the "R" class fresh for this test.
Here's what I had done in my Android application way back at Christmas 2011 ( http://lists.lazarus-ide.org/pipermail/lazarus/2011-December/134414.html ): === code begin === function TTrainTypeActivity.onCreateDialog(aID: jint): AADialog; var builder: AAAlertDialog.InnerBuilder; begin case aID of DialogIDDelete: begin builder := AAAlertDialog.InnerBuilder.Create(Self); builder.setMessage(JLString('Are you sure you want to delete train ' + 'type ''' + fDataHelper.NameOfTrainType[fSelectedID] + '''?')); builder.setPositiveButton(JLString('Yes'), Self); builder.setNegativeButton(JLString('No'), Self); Result := builder.create_; end; else Result := Nil; end; end; === code end === I know it's onCreateDialog() and not onResume(), but it should be the same principle. Though doesn't an activity itself already have a setTitle() method? At least that's what I had used in my onCreate()... Regards, Sven _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
