My talk about Android and the problem that I've had with the platform, at IT-Huset Stockholm 2010-04-22.

1. Hello World!

6. Photo: http://www.flickr.com/photos/toms/279820923/

8. Copy protection bug
02-04 08:55:19.262 E/AndroidRuntime( 5918): Uncaught handler: thread
main exiting due to uncaught exception
02-04 08:55:19.292 E/AndroidRuntime( 5918): java.lang.RuntimeException:
Unable to start activity ComponentInfo{com.markupartist.
sthlmtraveling/com.markupartist.sthlmtraveling.StartActivity}: java.lang.
RuntimeException: Unable to start activity ComponentInfo{com.
markupartist.sthlmtraveling/com.markupartist.sthlmtraveling.
PlannerActivity}: android.database.sqlite.SQLiteException: unable to open
database file
http://groups.google.com/group/android-
developers/browse_thread/thread/3c26247d7a0540d1

9. try {
mHistoryDbAdapter = new HistoryDbAdapter(this).open();
} catch (Exception e) {
showDialog(DIALOG_REINSTALL_APP);
return;
}

11. Missing applications from Market
"Har en 1.6 baserad lur och hittar inte sthlm
traveling på market.
Vet du varför. Hittar den med min 1.5 lur"
http://groups.google.com/group/android-
developers/browse_thread/thread/fd299f64638391e1
http://www.swedroid.se/forum/showthread.php?t=8247

12. java.lang.ClassCastException: android.graphics.drawable.BitmapDrawable
at com.google.android.maps.MyLocationOverlay.getLocationDot(MyLocationOverlay.java:180)
at com.google.android.maps.MyLocationOverlay.drawMyLocation(MyLocationOverlay.java:561)
at com.google.android.maps.MyLocationOverlay.draw(MyLocationOverlay.java:511)
at com.google.android.maps.OverlayBundle.draw(OverlayBundle.java:45)
at com.google.android.maps.MapView.onDraw(MapView.java:471) Spica
at android.view.View.draw(View.java:5838)
at android.view.ViewGroup.drawChild(ViewGroup.java:1486)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1228)
at android.view.ViewGroup.drawChild(ViewGroup.java:1484)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1228)
at android.view.View.draw(View.java:5841)
at android.widget.FrameLayout.draw(FrameLayout.java:352)
at android.view.ViewGroup.drawChild(ViewGroup.java:1486)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1228)
at android.view.ViewGroup.drawChild(ViewGroup.java:1484)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1228)
at android.view.View.draw(View.java:5841)
at android.widget.FrameLayout.draw(FrameLayout.java:352)
at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1898)
at android.view.ViewRoot.draw(ViewRoot.java:1217)
at android.view.ViewRoot.performTraversals(ViewRoot.java:1030)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1482)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:3948)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
at dalvik.system.NativeStart.main(Native Method)

13. /**
* From the Android Developers group.
* http://groups.google.com/group/android-developers/msg/6cb65da690614662
*
* This class is a workaround for the MyLocationOverlay, that crashes on
* some devices, in my case I got reports from a Spica device.
*/
public class FixedMyLocationOverlay extends MyLocationOverlay {
private boolean bugged = false;
private Paint accuracyPaint;
private Point center;
private Point left;
private Drawable drawable;
private int width;
private int height;
public FixedMyLocationOverlay(Context context, MapView mapView) {
super(context, mapView);
}
@Override
protected void drawMyLocation(Canvas canvas, MapView mapView,
Location lastFix, GeoPoint myLoc, long when) {
if (!bugged) {
try {
super.drawMyLocation(canvas, mapView, lastFix, myLoc, when);
} catch (Exception e) {
bugged = true;
}
}
if (bugged) {
if (drawable == null) {

14. Force Locale
Resources res = getResources();
DisplayMetrics dm = res.getDisplayMetrics();
Configuration conf = res.getConfiguration();
conf.locale = new Locale("sv", "SE");
res.updateConfiguration(conf, dm);

15. Force locale for an application, bug in
2.0? - Kaj Bjurman
"No, changing the application's locale like this is not supported,
and will not entirely work. It shouldn't cause an activity to
restart though... actually I can't imagine how this would cause
an activity to restart, since this method is much lower-level than
the activity. Maybe the process is crashing for some reason in
this call? "
Dianne Hackborn
Android framework engineer
http://groups.google.com/group/android-
developers/browse_thread/thread/cb1dec87804d416/51780ca
c36e4fcf4

16. AndroidManifest.xml
<activity android:name=".SearchDeparturesActivity"
android:label="@string/departures"
android:configChanges="locale" />

17. Photo: http://www.flickr.com/photos/travel_aficionado/4531677728/

18. android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@464ff8a0 is no
at android.view.ViewRoot.setView(ViewRoot.java:472)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
at android.view.Window$LocalWindowManager.addView(Window.java:424)
at android.app.Dialog.show(Dialog.java:239)
at android.app.Activity.showDialog(Activity.java:2528)
at com.markupartist.sthlmtraveling.DeviationsActivity$GetDeviationsTask.onPostExecute(DeviationsActivity.java:338)
at com.markupartist.sthlmtraveling.DeviationsActivity$GetDeviationsTask.onPostExecute(DeviationsActivity.java:1)
at android.os.AsyncTask.finish(AsyncTask.java:417)
at android.os.AsyncTask.access$300(AsyncTask.java:127)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4595)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
at dalvik.system.NativeStart.main(Native Method)

19. AsyncTask
protected void onSaveInstanceState(Bundle outState) { ... }
private void saveGetDetailsTask(Bundle outState) {
final GetDetailsTask task = mGetDetailsTask;
if (task != null && task.getStatus() != AsyncTask.Status.FINISHED) {
task.cancel(true);
mGetDetailsTask = null;
outState.putBoolean(STATE_GET_DETAILS_IN_PROGRESS, true);
}
}
protected void onRestoreInstanceState(Bundle savedInstanceState) { ... }
private void restoreGetDetailsTask(Bundle savedInstanceState) {
if (savedInstanceState.getBoolean(STATE_GET_DETAILS_IN_PROGRESS)) {
mGetDetailsTask = new GetDetailsTask();
mGetDetailsTask.execute(mRoute);
}
}
protected void onDestroy() { ... }
private void onCancelGetDetailsTask() {
if (mGetDetailsTask != null
&& mGetDetailsTask.getStatus() == AsyncTask.Status.RUNNING) {
mGetDetailsTask.cancel(true);
mGetDetailsTask = null;
}
}
private class GetDetailsTask extends AsyncTask<Route, Void, ArrayList<String>> { ... }

20. Photo: http://www.flickr.com/photos/laurapadgett/2807617588/sizes/l/

22. androidzoom.com

23. Photo: http://www.flickr.com/photos/library_mistress/1248479255/

24. iphone

25. Crash Reporter
Since the admin console lacks crash reports consider
implementing a reporter yourself. There's several out there.
http://androidblogger.blogspot.com/2010/03/crash-reporter-for-
android-slight.html
http://code.google.com/p/android-remote-stacktrace/

26. Hackathon
1/5, 2010, 9:00 - 21:00