[android-developers] Re: Question about parcelable object
Thanks again Kostya.
I don't understand why my List of Restaurant objects is a LinkedList,
since I define it as
private ListRestaurant restaurants = new
ArrayListRestaurant();
in my RestaurantList class...
Anyway, I tried your fix, but I'm still messed with types:
-first, I had to cast restaurantList.getRestaurants().toArray() to
(Restaurant[]), because it returns an Object[]:
Restaurant[] restArray =
(Restaurant[])restaurantList.getRestaurants().toArray();
outState.putParcelableArray(restoList,restArray);
-and even with that, I get an error when executing putParcelableArray:
07-06 16:09:30.066: ERROR/AndroidRuntime(930):
java.lang.RuntimeException: Unable to pause activity
{org.digitalfarm.atable/org.digitalfarm.atable.Atable}:
java.lang.ClassCastException: [Ljava.lang.Object;
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2840)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2797)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.handlePauseActivity(ActivityThread.java:
2780)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.access$2000(ActivityThread.java:112)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1699)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.os.Handler.dispatchMessage(Handler.java:99)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.os.Looper.loop(Looper.java:123)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.main(ActivityThread.java:3948)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
java.lang.reflect.Method.invokeNative(Native Method)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
java.lang.reflect.Method.invoke(Method.java:521)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:782)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
dalvik.system.NativeStart.main(Native Method)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): Caused by:
java.lang.ClassCastException: [Ljava.lang.Object;
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.Activity.performSaveInstanceState(Activity.java:1008)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:
1256)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2822)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): ... 12 more
Julien
On Jul 5, 10:17 pm, Kostya Vasilyev kmans...@gmail.com wrote:
Jul,
This is the heart of the problem in logcat:
07-05 19:34:28.647: ERROR/AndroidRuntime(808): Caused by:
java.lang.ClassCastException: java.util.LinkedList
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
My guess is that
gson.fromJson
creates a LinkedListRestaurant, then it blows at line Atable.java:254.
I am guessing it's the line saying:
outState.putParcelableArrayList(restoList,
(ArrayListRestaurant)restaurantList.getRestaurants());
and the immediate cause is the cast from LinkedListRestaurant to
ArrayListRestaurant, which are unrelated classes.
To fix this, you can change the above code to read:
Restaurant[] restArray = restaurantList.getRestaurants().toArray();
outState.putParcelableArray(restoList,restArray);
-- Kostya
05.07.2010 21:42, jul пишет:
Is it the right way to do it? The writeToParcel method of my
Restaurant object is never called...
The error seems to be in
outState.putParcelableArrayList(restoList,
(ArrayListRestaurant)restaurantList.getRestaurants());
and I get in my LogCat:
07-05 19:34:13.846: WARN/ActivityManager(563): Activity pause timeout
for HistoryRecord{436950f8 {org.digitalfarm.atable/
org.digitalfarm.atable.Atable}}
07-05 19:34:28.336: DEBUG/AndroidRuntime(808): Shutting down VM
07-05 19:34:28.336: WARN/dalvikvm(808): threadid=3: thread exiting
with uncaught exception (group=0x4000fe70)
07-05 19:34:28.336: ERROR/AndroidRuntime(808): Uncaught handler:
thread main exiting due to uncaught exception
07-05 19:34:28.637: DEBUG/dalvikvm(808): GC freed 3337 objects /
259288 bytes in 94ms
07-05 19:34:28.647: ERROR/AndroidRuntime(808):
java.lang.RuntimeException: Unable to pause activity
{org.digitalfarm.atable/org.digitalfarm.atable.Atable}:
java.lang.ClassCastException: java.util.LinkedList
07-05 19:34:28.647:
Re: [android-developers] Re: Question about parcelable object
Jul,
What is the code around line 254 in Atable.java?
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
And, what does restaurantList.getRestaurants() really return, when
called from onSaveInstanceState ?
-- Kostya
06.07.2010 18:19, jul пишет:
Thanks again Kostya.
I don't understand why my List of Restaurant objects is a LinkedList,
since I define it as
private ListRestaurant restaurants = new
ArrayListRestaurant();
in my RestaurantList class...
Anyway, I tried your fix, but I'm still messed with types:
-first, I had to cast restaurantList.getRestaurants().toArray() to
(Restaurant[]), because it returns an Object[]:
Restaurant[] restArray =
(Restaurant[])restaurantList.getRestaurants().toArray();
outState.putParcelableArray(restoList,restArray);
-and even with that, I get an error when executing putParcelableArray:
07-06 16:09:30.066: ERROR/AndroidRuntime(930):
java.lang.RuntimeException: Unable to pause activity
{org.digitalfarm.atable/org.digitalfarm.atable.Atable}:
java.lang.ClassCastException: [Ljava.lang.Object;
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2840)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2797)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.handlePauseActivity(ActivityThread.java:
2780)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.access$2000(ActivityThread.java:112)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1699)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.os.Handler.dispatchMessage(Handler.java:99)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.os.Looper.loop(Looper.java:123)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.main(ActivityThread.java:3948)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
java.lang.reflect.Method.invokeNative(Native Method)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
java.lang.reflect.Method.invoke(Method.java:521)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:782)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
dalvik.system.NativeStart.main(Native Method)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): Caused by:
java.lang.ClassCastException: [Ljava.lang.Object;
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.Activity.performSaveInstanceState(Activity.java:1008)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:
1256)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2822)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): ... 12 more
Julien
On Jul 5, 10:17 pm, Kostya Vasilyevkmans...@gmail.com wrote:
Jul,
This is the heart of the problem in logcat:
07-05 19:34:28.647: ERROR/AndroidRuntime(808): Caused by:
java.lang.ClassCastException: java.util.LinkedList
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
My guess is that
gson.fromJson
creates a LinkedListRestaurant, then it blows at line Atable.java:254.
I am guessing it's the line saying:
outState.putParcelableArrayList(restoList,
(ArrayListRestaurant)restaurantList.getRestaurants());
and the immediate cause is the cast from LinkedListRestaurant to
ArrayListRestaurant, which are unrelated classes.
To fix this, you can change the above code to read:
Restaurant[] restArray = restaurantList.getRestaurants().toArray();
outState.putParcelableArray(restoList,restArray);
-- Kostya
05.07.2010 21:42, jul пишет:
Is it the right way to do it? The writeToParcel method of my
Restaurant object is never called...
The error seems to be in
outState.putParcelableArrayList(restoList,
(ArrayListRestaurant)restaurantList.getRestaurants());
and I get in my LogCat:
07-05 19:34:13.846: WARN/ActivityManager(563): Activity pause timeout
for HistoryRecord{436950f8 {org.digitalfarm.atable/
org.digitalfarm.atable.Atable}}
07-05 19:34:28.336: DEBUG/AndroidRuntime(808): Shutting down VM
07-05 19:34:28.336: WARN/dalvikvm(808): threadid=3: thread exiting
with uncaught exception (group=0x4000fe70)
07-05 19:34:28.336: ERROR/AndroidRuntime(808): Uncaught handler:
thread main exiting due to
[android-developers] Re: Question about parcelable object
The type returned by restaurantList.getRestaurants() is LinkedList (I
still don't understand why. I expect ArrayList, as you can see in my
RestaurantList class definition in previous post).
It now works if I create an ArrayList from the LinkedList.
ArrayListRestaurant restArray = new
ArrayListRestaurant(restaurantList.getRestaurants());
outState.putParcelableArrayList(restoList, restArray);
I'm now going to investigate why gson creates a LinkedList instead of
an ArrayList...
Thanks again for your time, it helped a lot.
Julien
On Jul 6, 4:38 pm, Kostya Vasilyev kmans...@gmail.com wrote:
Jul,
What is the code around line 254 in Atable.java?
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
And, what does restaurantList.getRestaurants() really return, when
called from onSaveInstanceState ?
-- Kostya
06.07.2010 18:19, jul пишет:
Thanks again Kostya.
I don't understand why my List of Restaurant objects is a LinkedList,
since I define it as
private ListRestaurant restaurants = new
ArrayListRestaurant();
in my RestaurantList class...
Anyway, I tried your fix, but I'm still messed with types:
-first, I had to cast restaurantList.getRestaurants().toArray() to
(Restaurant[]), because it returns an Object[]:
Restaurant[] restArray =
(Restaurant[])restaurantList.getRestaurants().toArray();
outState.putParcelableArray(restoList,restArray);
-and even with that, I get an error when executing putParcelableArray:
07-06 16:09:30.066: ERROR/AndroidRuntime(930):
java.lang.RuntimeException: Unable to pause activity
{org.digitalfarm.atable/org.digitalfarm.atable.Atable}:
java.lang.ClassCastException: [Ljava.lang.Object;
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2840)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2797)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.handlePauseActivity(ActivityThread.java:
2780)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.access$2000(ActivityThread.java:112)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1699)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.os.Handler.dispatchMessage(Handler.java:99)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.os.Looper.loop(Looper.java:123)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.main(ActivityThread.java:3948)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
java.lang.reflect.Method.invokeNative(Native Method)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
java.lang.reflect.Method.invoke(Method.java:521)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:782)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
dalvik.system.NativeStart.main(Native Method)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): Caused by:
java.lang.ClassCastException: [Ljava.lang.Object;
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.Activity.performSaveInstanceState(Activity.java:1008)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:
1256)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2822)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): ... 12 more
Julien
On Jul 5, 10:17 pm, Kostya Vasilyevkmans...@gmail.com wrote:
Jul,
This is the heart of the problem in logcat:
07-05 19:34:28.647: ERROR/AndroidRuntime(808): Caused by:
java.lang.ClassCastException: java.util.LinkedList
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
My guess is that
gson.fromJson
creates a LinkedListRestaurant, then it blows at line Atable.java:254.
I am guessing it's the line saying:
outState.putParcelableArrayList(restoList,
(ArrayListRestaurant)restaurantList.getRestaurants());
and the immediate cause is the cast from LinkedListRestaurant to
ArrayListRestaurant, which are unrelated classes.
To fix this, you can change the above code to read:
Restaurant[] restArray = restaurantList.getRestaurants().toArray();
outState.putParcelableArray(restoList,restArray);
-- Kostya
Re: [android-developers] Re: Question about parcelable object
Jul,
The definition in your class only says that the restaurant list is a
ListRestaurant.
List is an interface:
http://java.sun.com/j2se/1.4.2/docs/api/java/util/List.html
Actual implementations are, among others, ArrayList and LinkedList. The
only thing they have in common is that they both implement the same
interface: List.
You can assign any actual implementation in one place (in RestaurantList
field initializer), but it doesn't mean that all other places
automagically use the same actual implementation, they are free to use
any other, as long as it's a ListRestaurant
And it appears that gson.fromJson does exactly that - returns a
ListRestaurant, which is actually a LinkListRestaurant.
-- Kostya
06.07.2010 19:11, jul пишет:
The type returned by restaurantList.getRestaurants() is LinkedList (I
still don't understand why. I expect ArrayList, as you can see in my
RestaurantList class definition in previous post).
It now works if I create an ArrayList from the LinkedList.
ArrayListRestaurant restArray = new
ArrayListRestaurant(restaurantList.getRestaurants());
outState.putParcelableArrayList(restoList, restArray);
I'm now going to investigate why gson creates a LinkedList instead of
an ArrayList...
Thanks again for your time, it helped a lot.
Julien
On Jul 6, 4:38 pm, Kostya Vasilyevkmans...@gmail.com wrote:
Jul,
What is the code around line 254 in Atable.java?
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
And, what does restaurantList.getRestaurants() really return, when
called from onSaveInstanceState ?
-- Kostya
06.07.2010 18:19, jul пишет:
Thanks again Kostya.
I don't understand why my List of Restaurant objects is a LinkedList,
since I define it as
private ListRestaurantrestaurants = new
ArrayListRestaurant();
in my RestaurantList class...
Anyway, I tried your fix, but I'm still messed with types:
-first, I had to cast restaurantList.getRestaurants().toArray() to
(Restaurant[]), because it returns an Object[]:
Restaurant[] restArray =
(Restaurant[])restaurantList.getRestaurants().toArray();
outState.putParcelableArray(restoList,restArray);
-and even with that, I get an error when executing putParcelableArray:
07-06 16:09:30.066: ERROR/AndroidRuntime(930):
java.lang.RuntimeException: Unable to pause activity
{org.digitalfarm.atable/org.digitalfarm.atable.Atable}:
java.lang.ClassCastException: [Ljava.lang.Object;
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2840)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2797)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.handlePauseActivity(ActivityThread.java:
2780)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.access$2000(ActivityThread.java:112)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1699)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.os.Handler.dispatchMessage(Handler.java:99)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.os.Looper.loop(Looper.java:123)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.main(ActivityThread.java:3948)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
java.lang.reflect.Method.invokeNative(Native Method)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
java.lang.reflect.Method.invoke(Method.java:521)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:782)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
dalvik.system.NativeStart.main(Native Method)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): Caused by:
java.lang.ClassCastException: [Ljava.lang.Object;
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.Activity.performSaveInstanceState(Activity.java:1008)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:
1256)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2822)
07-06 16:09:30.066: ERROR/AndroidRuntime(930): ... 12 more
Julien
On Jul 5, 10:17 pm, Kostya Vasilyevkmans...@gmail.comwrote:
Jul,
This is the heart of the problem in logcat:
07-05
[android-developers] Re: Question about parcelable object
Is it the right way to do it? The writeToParcel method of my
Restaurant object is never called...
The error seems to be in
outState.putParcelableArrayList(restoList,
(ArrayListRestaurant)restaurantList.getRestaurants());
and I get in my LogCat:
07-05 19:34:13.846: WARN/ActivityManager(563): Activity pause timeout
for HistoryRecord{436950f8 {org.digitalfarm.atable/
org.digitalfarm.atable.Atable}}
07-05 19:34:28.336: DEBUG/AndroidRuntime(808): Shutting down VM
07-05 19:34:28.336: WARN/dalvikvm(808): threadid=3: thread exiting
with uncaught exception (group=0x4000fe70)
07-05 19:34:28.336: ERROR/AndroidRuntime(808): Uncaught handler:
thread main exiting due to uncaught exception
07-05 19:34:28.637: DEBUG/dalvikvm(808): GC freed 3337 objects /
259288 bytes in 94ms
07-05 19:34:28.647: ERROR/AndroidRuntime(808):
java.lang.RuntimeException: Unable to pause activity
{org.digitalfarm.atable/org.digitalfarm.atable.Atable}:
java.lang.ClassCastException: java.util.LinkedList
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2840)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2797)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.handlePauseActivity(ActivityThread.java:
2780)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.access$2000(ActivityThread.java:112)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1699)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.os.Handler.dispatchMessage(Handler.java:99)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.os.Looper.loop(Looper.java:123)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.main(ActivityThread.java:3948)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
java.lang.reflect.Method.invokeNative(Native Method)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
java.lang.reflect.Method.invoke(Method.java:521)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:782)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
dalvik.system.NativeStart.main(Native Method)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): Caused by:
java.lang.ClassCastException: java.util.LinkedList
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.Activity.performSaveInstanceState(Activity.java:1008)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:
1256)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2822)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): ... 12 more
thanks for your help
On Jul 5, 6:31 pm, Kostya Vasilyev kmans...@gmail.com wrote:
Jul,
Parcelable implementation looks good, except for the questionable cast
to ArrayListRestaurant, but that shouldn't have any effect.
What error are you getting, exactly?
-- Kostya
05.07.2010 20:20, jul пишет:
Hi,
I want to save a list of Parcelable Restaurant objects on
onSaveInstanceState. I created a Restaurant class extending Parcelable
and a RestaurantList object, both shown below. In my main activity I
fill my RestauranList directly from json internet data using GSON:
restaurantList = gson.fromJson(r, RestaurantList.class);
Now, when I want to save the List of Restaurant objects using
protected void onSaveInstanceState(Bundle outState) {
if (restaurantList != null ) {
outState.putParcelableArrayList(restoList,
(ArrayListRestaurant)restaurantList.getRestaurants());
}
super.onSaveInstanceState(outState);
}
I get an error, I guess because Parcelable data are not written. How
should I do it? Do I have to create an array of Parcel objects in my
main activity and fill it by calling writeToParcel for each of the
Restaurant objects?
thanks for any suggestion
Julien
**RestaurantList
class**
public class RestaurantList {
private ListRestaurant restaurants = new
ArrayListRestaurant();
public int getSize() {
return restaurants.size();
}
public ListRestaurant getRestaurants() {
return this.restaurants;
}
public Restaurant getRestaurant(int i) {
return this.restaurants.get(i);
}
public void setRestaurants(ListRestaurant restaurants) {
Re: [android-developers] Re: Question about parcelable object
Jul,
This is the heart of the problem in logcat:
07-05 19:34:28.647: ERROR/AndroidRuntime(808): Caused by:
java.lang.ClassCastException: java.util.LinkedList
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
My guess is that
gson.fromJson
creates a LinkedListRestaurant, then it blows at line Atable.java:254.
I am guessing it's the line saying:
outState.putParcelableArrayList(restoList,
(ArrayListRestaurant)restaurantList.getRestaurants());
and the immediate cause is the cast from LinkedListRestaurant to
ArrayListRestaurant, which are unrelated classes.
To fix this, you can change the above code to read:
Restaurant[] restArray = restaurantList.getRestaurants().toArray();
outState.putParcelableArray(restoList,restArray);
-- Kostya
05.07.2010 21:42, jul пишет:
Is it the right way to do it? The writeToParcel method of my
Restaurant object is never called...
The error seems to be in
outState.putParcelableArrayList(restoList,
(ArrayListRestaurant)restaurantList.getRestaurants());
and I get in my LogCat:
07-05 19:34:13.846: WARN/ActivityManager(563): Activity pause timeout
for HistoryRecord{436950f8 {org.digitalfarm.atable/
org.digitalfarm.atable.Atable}}
07-05 19:34:28.336: DEBUG/AndroidRuntime(808): Shutting down VM
07-05 19:34:28.336: WARN/dalvikvm(808): threadid=3: thread exiting
with uncaught exception (group=0x4000fe70)
07-05 19:34:28.336: ERROR/AndroidRuntime(808): Uncaught handler:
thread main exiting due to uncaught exception
07-05 19:34:28.637: DEBUG/dalvikvm(808): GC freed 3337 objects /
259288 bytes in 94ms
07-05 19:34:28.647: ERROR/AndroidRuntime(808):
java.lang.RuntimeException: Unable to pause activity
{org.digitalfarm.atable/org.digitalfarm.atable.Atable}:
java.lang.ClassCastException: java.util.LinkedList
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2840)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2797)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.handlePauseActivity(ActivityThread.java:
2780)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.access$2000(ActivityThread.java:112)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1699)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.os.Handler.dispatchMessage(Handler.java:99)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.os.Looper.loop(Looper.java:123)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.main(ActivityThread.java:3948)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
java.lang.reflect.Method.invokeNative(Native Method)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
java.lang.reflect.Method.invoke(Method.java:521)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:782)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
dalvik.system.NativeStart.main(Native Method)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): Caused by:
java.lang.ClassCastException: java.util.LinkedList
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
org.digitalfarm.atable.Atable.onSaveInstanceState(Atable.java:254)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.Activity.performSaveInstanceState(Activity.java:1008)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:
1256)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:
2822)
07-05 19:34:28.647: ERROR/AndroidRuntime(808): ... 12 more
thanks for your help
On Jul 5, 6:31 pm, Kostya Vasilyevkmans...@gmail.com wrote:
Jul,
Parcelable implementation looks good, except for the questionable cast
to ArrayListRestaurant, but that shouldn't have any effect.
What error are you getting, exactly?
-- Kostya
05.07.2010 20:20, jul пишет:
Hi,
I want to save a list of Parcelable Restaurant objects on
onSaveInstanceState. I created a Restaurant class extending Parcelable
and a RestaurantList object, both shown below. In my main activity I
fill my RestauranList directly from json internet data using GSON:
restaurantList = gson.fromJson(r, RestaurantList.class);
Now, when I want to save the List of Restaurant objects using
protected void onSaveInstanceState(Bundle outState) {
if (restaurantList != null ) {
outState.putParcelableArrayList(restoList,
