On 30.08.2011 22:11, Jonas Maebe wrote:
On 30 Aug 2011, at 21:59, Sven Barth wrote:
I/ActivityManager( 62): Start proc com.example.helloandroid for activity
com.example.helloandroid/.HelloAndroid: pid=375 uid=10034 gids={1015}
W/dalvikvm( 375): VFY: new-instance on interface or abstract class
Lorg/freepascal/android/TTestActivity;
It says that the VM is instantiating an abstract class. Does the TTestActivity.j file contain
"abstract" in the ".class" line near the top? The compiler will automatically
add this keyword if a class contains one or more (possibly inherited) abstract methods (it's
required by the JVM).
Indeed it does. In the .j as well as the disassembled .dex file:
=== part of TTestActivity.j begin ===
.bytecode 49.0
.source androidfpc.pas
.class abstract public org/freepascal/android/TTestActivity
.super android/app/Activity
=== part of TTestActivity.j end ===
=== part of TTestActivity.dex begin ===
.class public abstract org/freepascal/android/TTestActivity
.super android/app/Activity
.source androidfpc.pas
=== part of TTestActivity.dex end ===
I've also found the class that defines the abstract methods. It's four
classes above android.app.Activity in the inheritance tree
(android.common.Context). I yet need to check whether all methods are
overridden correctly by the subclasses (and crosscheck that with the
documentation).
Regards,
Sven
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