java.lang.NullPointerException when creating a Switch object

[Александр Страшко]

When creating in extension (with the help of reflection) Switch widget on Android 4.1.1 MIT AI2 Companion fails with error and the message in the debugger java.lang.NullPointerException.

The try block does not catch this error.  Other widgets (Button, RaitingBar, ZoomControls, etc.) are created without any problems.

[Evan Patton]

Which try-catch block are you referring to? Not all versions of Android are going to support all possible widgets. You should also provide a complete stack trace--we don't know if the error at this point is in your code or ours.

Evan

[Александр Страшко]

As an external block, I use try-catch (Exception e), and when I generate an instance of the class, the code

Class _class = Class.forName ("android.widget." + ClassName);
 Constructor _con = _class.getConstructors () [0];

catch (InvocationTargetException e)
catch (java.lang.InstantiationException e)
catch (java.lang.IllegalAccessException e)
catch (java.lang.IllegalArgumentException e)
catch (java.lang.ClassNotFoundException e)

In the other development environment, the same code works on the same device good.

[Moliata]

You are not catching NullPointerException:

catch (InvocationTargetException e)
catch (java.lang.InstantiationException e)
catch (java.lang.IllegalAccessException e)
catch (java.lang.IllegalArgumentException e)
catch (java.lang.ClassNotFoundException e)

You need to also add: catch (java.lang.NullPointerException e)

[Александр Страшко]

added catch (java.lang.NullPointerException e), but Companion has stopped - java.lang.NullPointerException

[Jos Flores]

Instead of catch(NPE) you are better off checking that you don't try
to access a method on something that is Null. For instance in the code
you provided, check that (_class != null) before trying to
_class.getConstructors().
The issue may be somewhere else though, if you have more code than that.

cheers,
José

On 6 October 2017 at 22:22, Александр Страшко <actec...@gmail.com> wrote:
> added catch (java.lang.NullPointerException e), but Companion has stopped -
> java.lang.NullPointerException
>
>

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[Александр Страшко]

I did a little test. 

Empty Toast is shown. If remove comment, then Companion v2.44 stopped.

        String result="";
                try {
                    Switch sw = new Switch(context);
                   
                    if(sw!=null){
                        sw.setText("Test");
                        //container.$form().setContentView(sw);
                    }
                } catch (java.lang.NullPointerException e){
                    result = e.toString();
                } catch (Exception e){
                    result = e.toString();
                }   
               
        Toast.makeText(context, result, Toast.LENGTH_SHORT).show();

[Moliata]

Your code is wrong, that's why you are getting an issue. I you want to add a visible component, there is a lot of work to do. Make a MockSwitch.java, Switch.java by itself.

[Александр Страшко]

Maybe this code is wrong, but it works! 

Try instead of Switch to specify, for example, a ToggleButton or a widget of any other simple type and there will be no problems.

Or do you want to say that the sample code is an undocumented feature? 

I do not particularly need Switch, but when checking the expansion capabilities I was interested in why other widgets are created or processed with exceptions, and on the Switch Companion stopeed, and using two different approaches to its creation.

[Tiziano Conti]

Maybe this is not your case, but just to help: switch is not supported in extensions e.g. compiled with ant because of implemented java version being less than 7.Could be your case?

[Александр Страшко]

Thanks Tiziano Conti

For the interest put ant 1.10.1., but it had no effect.  Interestingly, in ARC Welder (Android 5.0) Switch is created as a text label, but after that the Companion still closes.

[Jos Flores]

Can you provide the full stack trace? Switch is only available in
Level 14+, unless you are using compat libraries; are you?

cheers,
José

[Александр Страшко]

I use android.widget.Switch.

Logs

--------- beginning of /dev/log/system

I/ActivityManager(  301): Process edu.mit.appinventor.aicompanion3 (pid 23161) has died.

W/InputDispatcher(  301): channel '41d25f40 edu.mit.appinventor.aicompanion3/edu.mit.appinventor.aicompanion3.Screen1 (server)' ~ Consumer closed input channel or an error occurred.  events=0x9

E/InputDispatcher(  301): channel '41d25f40 edu.mit.appinventor.aicompanion3/edu.mit.appinventor.aicompanion3.Screen1 (server)' ~ Channel is unrecoverably broken and will be disposed!

W/InputDispatcher(  301): Attempted to unregister already unregistered input channel '41d25f40 edu.mit.appinventor.aicompanion3/edu.mit.appinventor.aicompanion3.Screen1 (server)'

I/WindowManager(  301): WINDOW DIED Window{41d25f40 edu.mit.appinventor.aicompanion3/edu.mit.appinventor.aicompanion3.Screen1 paused=false}

W/WindowManager(  301): Failed looking up window

W/WindowManager(  301): java.lang.IllegalArgumentException: Requested window android.os.BinderProxy@423b68b8 does not exist

W/WindowManager(  301):     at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:7753)

W/WindowManager(  301):     at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:7744)

W/WindowManager(  301):     at com.android.server.wm.WindowState$DeathRecipient.binderDied(WindowState.java:854)

W/WindowManager(  301):     at android.os.BinderProxy.sendDeathNotice(Binder.java:449)

W/WindowManager(  301):     at dalvik.system.NativeStart.run(Native Method)

I/WindowState(  301): WIN DEATH: null

W/InputMethodManagerService(  301): Got RemoteException sending setActive(false) notification to pid 23161 uid 10072

I/ActivityManager(  301): START {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 pkg=edu.mit.appinventor.aicompanion3 cmp=edu.mit.appinventor.aicompanion3/.Screen1 bnds=[16,970][112,1066] u=0} from pid 513

D/ActivityThread(  513): handlePauseActivity set pri:-16

I/dalvikvm(23412): Turning on JNI app bug workarounds for target SDK version 4...

E/ActivityManager(  301): starting process edu.mit.appinventor.aicompanion3

I/ActivityManager(  301): Start proc edu.mit.appinventor.aicompanion3 for activity edu.mit.appinventor.aicompanion3/.Screen1: pid=23412 uid=10072 gids={1028, 1015, 1006, 3002, 3003, 3001}

E/NvCpuService(  116): unable to open /d/tegra_hotplug/core_bias

E/Trace   (23412): error opening trace file: No such file or directory (2)

I/MultiDex(23412): VM with version 1.6.0 does not have multidex support

I/MultiDex(23412): install: doIt = false

E/WindowManager(  301): createScaleUpAnimationLocked transit:8204 duration:500

E/WindowManager(  301): createScaleUpAnimationLocked transit:8204 duration:500

D/MultiDex(23412): Proceeding with installation...

I/MultiDex(23412): MultiDexExtractor.load(/data/app/edu.mit.appinventor.aicompanion3-1.apk, false)

I/MultiDex(23412): loading existing secondary dex files

I/MultiDex(23412): load found 1 secondary dex files

I/MultiDex(23412): install done

I/ReplApplication(23412): ACRA Not Active

D/Form    (23412): Form Screen1 got onCreate

I/Form    (23412): activeForm is now Screen1

D/Form    (23412): deviceDensity = 1.0

I/Form    (23412): compatScalingFactor = 2.5

D/Form    (23412): MULTI: _initialized = false formName = Screen1

D/Form    (23412): MultiDex already installed.

D/Form    (23412): onCreateFinish called 1507473234298

D/Form    (23412): recomputeLayout called

D/Form    (23412): About to create a new ScaledFrameLayout

D/Form    (23412): Sizing(Fixed)

D/Form    (23412): formWidth = 320 formHeight = 492

D/MediaUtil(23412): mediaPath = mooning.png

D/MediaUtil(23412): getBitmapOptions: sampleSize = 1 mediaPath = mooning.png maxWidth = 720 maxHeight = 840 display width = 800 display height = 1232

D/Form    (23412): recomputeLayout called

D/Form    (23412): About to create a new ScaledFrameLayout

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/Form    (23412): Form.Width = 320

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/Form    (23412): Form.Width = 320

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

D/Form    (23412): Form.Width = 320

W/System.err(23412): Form.setChildWidth(): width = -2 parent Width = 320 child = com.google.appinventor.components.runtime.VerticalArrangement@41f4f4c0

D/Form    (23412): Form.Width = 320

W/System.err(23412): Form.setChildWidth(): width = -2 parent Width = 320 child = com.google.appinventor.components.runtime.VerticalArrangement@41f72110

D/Form    (23412): Form.Width = 320

D/MediaUtil(23412): mediaPath = Title.png

D/MediaUtil(23412): getBitmapOptions: sampleSize = 1 mediaPath = Title.png maxWidth = 720 maxHeight = 840 display width = 800 display height = 1232

D/Form    (23412): Form.Width = 320

D/Form    (23412): Form.Width = 320

D/Form    (23412): Form.Width = 320

V/TrashClearDatabaseHelper( 9713): TrashClearDatabaseHelper,openDatabase,begin

D/Form    (23412): Form.Height = 492

D/dalvikvm(23412): GC_CONCURRENT freed 2026K, 21% free 8062K/10183K, paused 6ms+5ms, total 61ms

D/dalvikvm(23412): WAIT_FOR_CONCURRENT_GC blocked 43ms

D/Form    (23412): Form.Width = 320

D/Form    (23412): Form.Width = 320

D/MediaUtil(23412): mediaPath = Instructions.png

D/MediaUtil(23412): getBitmapOptions: sampleSize = 1 mediaPath = Instructions.png maxWidth = 720 maxHeight = 840 display width = 800 display height = 1232

D/Form    (23412): Form.Width = 320

D/Form    (23412): Form.Height = 492

D/Form    (23412): Form.Width = 320

D/Form    (23412): Form.Width = 320

D/Form    (23412): Form.Width = 320

D/Form    (23412): Form.Width = 320

D/Form    (23412): Form.Height = 492

D/MediaUtil(23412): mediaPath = connectwCode.png

D/MediaUtil(23412): getBitmapOptions: sampleSize = 1 mediaPath = connectwCode.png maxWidth = 720 maxHeight = 840 display width = 800 display height = 1232

D/Form    (23412): Form.Height = 492

D/MediaUtil(23412): mediaPath = connectwQR.png

D/MediaUtil(23412): getBitmapOptions: sampleSize = 1 mediaPath = connectwQR.png maxWidth = 720 maxHeight = 840 display width = 800 display height = 1232

D/Form    (23412): Form.Width = 320

D/Form    (23412): Form.Width = 320

D/ReplForm(23412): onCreate

D/ActivityThread(23412): handleResumeActivity now pri:0

D/ActivityThread(23412): handleResumeActivity set pri:-16

I/Form    (23412): Form Screen1 got onResume

D/SizeAdaptiveLayout(  419): com.android.internal.widget.SizeAdaptiveLayout@42469448child view android.widget.LinearLayout@41dc2830 measured out of bounds at 56px clamped to 64px

D/SizeAdaptiveLayout(  419): com.android.internal.widget.SizeAdaptiveLayout@42469448child view android.widget.LinearLayout@41dc2830 measured out of bounds at 56px clamped to 64px

V/TabletStatusBar(  419): setLightsOn(true)

D/Form    (23412): onGlobalLayout(): heightdiff = 25 contentViewTop = 25

D/Form    (23412): keyboard hidden!

D/Form    (23412): Sizing(Fixed)

D/Form    (23412): formWidth = 320 formHeight = 492

D/Form    (23412): ReplayFormOrientation()

D/Form    (23412): Sizing(Fixed)

D/Form    (23412): formWidth = 320 formHeight = 492

D/Form    (23412): ReplayFormOrientation()

D/PhoneStatus(23412): android.os.Build.VERSION.RELEASE = 4.1.1

D/PhoneStatus(23412): android.os.Build.PRODUCT = mx532

D/Form    (23412): Sizing(Fixed)

D/Form    (23412): formWidth = 320 formHeight = 492

D/ReplForm(23412): HandleReturnValues() Called, replResult = null

D/Form    (23412): onGlobalLayout(): heightdiff = 25 contentViewTop = 25

D/Form    (23412): keyboard hidden!

I/TrashClearDatabaseHelper( 9713): openDatabase: mDataVersion = 5

V/TrashClearDatabaseHelper( 9713): TrashClearDatabaseHelper,openDatabase,end

D/TrashClearDatabaseHelper( 9713): getAppType pkg=edu.mit.appinventor.aicompanion3 type=-1

I/ActivityManager(  301): Displayed edu.mit.appinventor.aicompanion3/.Screen1: +995ms

D/Form    (23412): onGlobalLayout(): heightdiff = 25 contentViewTop = 25

D/Form    (23412): keyboard hidden!

D/WifiService(  301): ACTION_BATTERY_CHANGED pluggedType: 1

V/ActivityThread( 2691): Performing receive of Intent { flg=0x14 cmp=com.liquidum.thecleaner/.receiver.StartServiceAlarmReceiver (has extras) } receiver.getPendingResult():ReceiverData{intent=Intent { flg=0x14 cmp=com.liquidum.thecleaner/.receiver.StartServiceAlarmReceiver (has extras) } packageName=com.liquidum.thecleaner resultCode=0 resultData=null resultExtras=null}

D/WifiService(  301): ACTION_BATTERY_CHANGED pluggedType: 1

I/Sensors (  301): **** No Motion ****

I/Sensors (  301): **** Motion ****

D/PhoneStatus(23412): Seed = szoojn

D/PhoneStatus(23412): Code = e6c8a64d977caa8b9dcd61d24a3de3dea71f5e87

I/ReplForm(23412): started AppInvHTTPD

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 0

D/AppInvHTTPD(23412): OPTIONS '/'

D/AppInvHTTPD(23412):   HDR: 'connection' = 'keep-alive'

D/AppInvHTTPD(23412):   HDR: 'host' = '192.168.1.41:8001'

D/AppInvHTTPD(23412):   HDR: 'accept-language' = 'ru-RU,ru;q=0.8,en-US;q=0.5,en;q=0.3'

D/AppInvHTTPD(23412):   HDR: 'accept' = 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'

D/AppInvHTTPD(23412):   HDR: 'access-control-request-method' = 'PUT'

D/AppInvHTTPD(23412):   HDR: 'origin' = 'http://ai2.appinventor.mit.edu'

D/AppInvHTTPD(23412):   HDR: 'user-agent' = 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:56.0) Gecko/20100101 Firefox/56.0'

D/AppInvHTTPD(23412):   HDR: 'accept-encoding' = 'gzip, deflate'

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 1

D/AppInvHTTPD(23412): PUT '/'

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 2

D/AppInvHTTPD(23412): OPTIONS '/'

D/AppInvHTTPD(23412):   HDR: 'connection' = 'keep-alive'

D/AppInvHTTPD(23412):   HDR: 'host' = '192.168.1.41:8001'

D/AppInvHTTPD(23412):   HDR: 'accept-language' = 'ru-RU,ru;q=0.8,en-US;q=0.5,en;q=0.3'

D/AppInvHTTPD(23412):   HDR: 'accept' = 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'

D/AppInvHTTPD(23412):   HDR: 'access-control-request-method' = 'PUT'

D/AppInvHTTPD(23412):   HDR: 'origin' = 'http://ai2.appinventor.mit.edu'

D/AppInvHTTPD(23412):   HDR: 'user-agent' = 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:56.0) Gecko/20100101 Firefox/56.0'

D/AppInvHTTPD(23412):   HDR: 'accept-encoding' = 'gzip, deflate'

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 2

D/AppInvHTTPD(23412): PUT '/'

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 2

D/AppInvHTTPD(23412): POST '/_extensions'

D/ReplForm(23412): Loading component dex /storage/sdcard0/AppInventor/assets/external_comps/vlad/vlad.jar

D/ReplForm(23412): Loading component dex /storage/sdcard0/AppInventor/assets/external_comps/showmethods/showmethods.jar

D/ReplForm(23412): Thread[HTTPD Session,5,biggerstack]

D/ReplForm(23412): Thread[main,5,main]

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 2

D/AppInvHTTPD(23412): GET '/_getversion'

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 2

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 2

D/AppInvHTTPD(23412): POST '/_newblocks'

D/AppInvHTTPD(23412): Incoming Mac = 498bc35ef7e7aa021153ebee8c0cdc4b01bf18fc

D/AppInvHTTPD(23412): Computed Mac = 498bc35ef7e7aa021153ebee8c0cdc4b01bf18fc

D/AppInvHTTPD(23412): Incoming seq = 1

D/AppInvHTTPD(23412): Computed seq = 1

D/AppInvHTTPD(23412): blockid = -2

D/AppInvHTTPD(23412): To Eval: (begin (require <com.google.youngandroid.runtime>) (process-repl-input -2 (begin (clear-current-form)(try-catch (let ((attempt (delay (set-form-name "Screen1")))) (force attempt)) (exception java.lang.Throwable 'notfound))(do-after-form-creation (set-and-coerce-property! 'Screen1 'AppName "StudyExtension" 'text)\u000a (set-and-coerce-property! 'Screen1 'BackgroundColor #x00FFFFFF 'number)\u000a (set-and-coerce-property! 'Screen1 'Title "Screen1" 'text)\u000a)\u000a\u000a(add-component Screen1 com.google.appinventor.components.runtime.Button Button1 \u000a(set-and-coerce-property! 'Button1 'Text "Text for Button1" 'text)\u000a\u000a)\u000a\u000a(add-component Screen1 com.google.appinventor.components.runtime.VerticalArrangement VerticalArrangement1 \u000a(set-and-coerce-property! 'VerticalArrangement1 'BackgroundColor #xFF888888 'number)\u000a\u000a)\u000a\u000a(add-component Screen1 com.google.appinventor.components.runtime.Button Button2 \u000a(set-and-coerce-property! 'Button2 'Text "Text for Button2" 'text)\u000a\u000a)\u000a\u000a(add-component Screen1 showmethods.ShowMethodList ShowMethodList1 \u000a)\u000a(init-runtime)(call-Initialize-of-components 'Screen1 'Button1 'VerticalArrangement1 'Button2 'ShowMethodList1) )))

D/AppInvHTTPD(23412): POST '/_values'

D/dalvikvm(23412): GC_CONCURRENT freed 2813K, 24% free 9386K/12295K, paused 22ms+3ms, total 57ms

D/dalvikvm(23412): WAIT_FOR_CONCURRENT_GC blocked 17ms

D/WifiService(  301): ACTION_BATTERY_CHANGED pluggedType: 1

D/Form    (23412): recomputeLayout called

D/Form    (23412): About to create a new ScaledFrameLayout

D/Form    (23412): Sizing(Fixed)

D/Form    (23412): formWidth = 320 formHeight = 492

W/System.err(23412): Form.clear() About to do moby GC!

D/dalvikvm(23412): WAIT_FOR_CONCURRENT_GC blocked 0ms

D/dalvikvm(23412): GC_EXPLICIT freed 1891K, 29% free 8731K/12295K, paused 2ms+3ms, total 43ms

D/ReplForm(23412): formName is now Screen1

D/HVArrangement(23412): Setting up frameContainer = FrameLayout()

I/Form    (23412): calling Initialize method for Object edu.mit.appinventor.aicompanion3.Screen1@41cb96f0

D/Form    (23412): onGlobalLayout(): heightdiff = 25 contentViewTop = 25

D/Form    (23412): keyboard hidden!

D/Form    (23412): onGlobalLayout(): heightdiff = 25 contentViewTop = 25

D/Form    (23412): keyboard hidden!

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 2

D/AppInvHTTPD(23412): POST '/_values'

D/Form    (23412): Sizing(Fixed)

D/Form    (23412): formWidth = 320 formHeight = 492

D/Form    (23412): ReplayFormOrientation()

D/Form    (23412): Sizing(Fixed)

D/Form    (23412): formWidth = 320 formHeight = 492

D/ReplForm(23412): HandleReturnValues() Called, replResult = null

D/Form    (23412): onGlobalLayout(): heightdiff = 25 contentViewTop = 25

D/Form    (23412): keyboard hidden!

D/Form    (23412): onGlobalLayout(): heightdiff = 25 contentViewTop = 25

D/Form    (23412): keyboard hidden!

I/Sensors (  301): **** No Motion ****

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 2

D/AppInvHTTPD(23412): POST '/_newblocks'

D/AppInvHTTPD(23412): Incoming Mac = ffd159b13e819c1483f0953fb5dabf3a9b0f036b

D/AppInvHTTPD(23412): Computed Mac = ffd159b13e819c1483f0953fb5dabf3a9b0f036b

D/AppInvHTTPD(23412): Incoming seq = 2

D/AppInvHTTPD(23412): Computed seq = 2

D/AppInvHTTPD(23412): blockid = "cte0xAAW{fMV]0pVp*p("

D/AppInvHTTPD(23412): To Eval: (begin (require <com.google.youngandroid.runtime>) (process-repl-input "cte0xAAW{fMV]0pVp*p(" (begin (call-component-method 'ShowMethodList1 'Create1 (*list-for-runtime* "Button"  "Button") '(text text)) )))

D/AndroidRuntime(23412): Shutting down VM

W/dalvikvm(23412): threadid=1: thread exiting with uncaught exception (group=0x4167e318)

E/AndroidRuntime(23412): FATAL EXCEPTION: main

E/AndroidRuntime(23412): java.lang.NullPointerException

E/AndroidRuntime(23412):     at android.text.Layout.getDesiredWidth(Layout.java:67)

E/AndroidRuntime(23412):     at android.widget.Switch.makeLayout(Switch.java:545)

E/AndroidRuntime(23412):     at android.widget.Switch.onMeasure(Switch.java:479)

E/AndroidRuntime(23412):     at android.view.View.measure(View.java:15172)

E/AndroidRuntime(23412):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)

E/AndroidRuntime(23412):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)

E/AndroidRuntime(23412):     at android.view.View.measure(View.java:15172)

E/AndroidRuntime(23412):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:833)

E/AndroidRuntime(23412):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)

E/AndroidRuntime(23412):     at android.view.View.measure(View.java:15172)

E/AndroidRuntime(23412):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)

E/AndroidRuntime(23412):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)

E/AndroidRuntime(23412):     at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2150)

E/AndroidRuntime(23412):     at android.view.View.measure(View.java:15172)

E/AndroidRuntime(23412):     at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1848)

E/AndroidRuntime(23412):     at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1100)

E/AndroidRuntime(23412):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1273)

E/AndroidRuntime(23412):     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)

E/AndroidRuntime(23412):     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4239)

E/AndroidRuntime(23412):     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)

E/AndroidRuntime(23412):     at android.view.Choreographer.doCallbacks(Choreographer.java:555)

E/AndroidRuntime(23412):     at android.view.Choreographer.doFrame(Choreographer.java:525)

E/AndroidRuntime(23412):     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)

E/AndroidRuntime(23412):     at android.os.Handler.handleCallback(Handler.java:615)

E/AndroidRuntime(23412):     at android.os.Handler.dispatchMessage(Handler.java:92)

E/AndroidRuntime(23412):     at android.os.Looper.loop(Looper.java:137)

E/AndroidRuntime(23412):     at android.app.ActivityThread.main(ActivityThread.java:4762)

E/AndroidRuntime(23412):     at java.lang.reflect.Method.invokeNative(Native Method)

E/AndroidRuntime(23412):     at java.lang.reflect.Method.invoke(Method.java:511)

E/AndroidRuntime(23412):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)

E/AndroidRuntime(23412):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)

E/AndroidRuntime(23412):     at dalvik.system.NativeStart.main(Native Method)

W/ActivityManager(  301):   Force finishing activity edu.mit.appinventor.aicompanion3/.Screen1

W/ActivityManager(  301): Activity pause timeout for ActivityRecord{41dacb20 edu.mit.appinventor.aicompanion3/.Screen1}

E/NvCpuService(  116): unable to open /d/tegra_hotplug/core_bias

D/ActivityThread(  513): handleResumeActivity now pri:-16

D/ActivityThread(  513): handleResumeActivity set pri:-16

E/WindowManager(  301):  transit:WindowAnimation_wallpaperOpenEnterAnimation

E/WindowManager(  301):  transit:WindowAnimation_wallpaperOpenExitAnimation

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 2

D/AppInvHTTPD(23412): POST '/_values'

D/AppInvHTTPD(23412): NanoHTTPD: getPoolSize() = 2

I/ActivityManager(  301): No longer want com.android.email (pid 21742): hidden #16