App Showing App Keeps Stopping when testing it after downloading the apk file

[iamwsumit (Sumit Kumar)]

@Anwita_Divya

closing in my phone

Mine also.

Have you tried that i said here​

@iamwsumit

can you try to reduce the animation duration that is 2000 in your blocks. Try to set it 1000 or lesser as the clock interval is 1500 then try again.

[Anu10 (Anu)]

@Jinx Second screen was not opening for me !!! Did it opened for you ?

[Jinx]

@Anu10

Second screen was not opening for me !!! Did it opened for you ?

Wait i send recording

[Jinx]

[Anwita_Divya]

I did what you said but it is still not working

[Jinx]

@Anu10 @Anwita_Divya @iamwsumit See this Video

[Anwita_Divya]

But there are some things on Screen2 and it is not blank

[Jinx]

That video is from android 7

[Jinx]

I don’t know what happened to my English today i am sorry

[Jinx]

Ok This means error is still there

[iamwsumit (Sumit Kumar)]

Just checked the logs of the apk. Looks like the error is not in Screen1. As I can see in the logs, Screen2 is opened

In this image you can also see that a Card View log is present it means card view is created on screen2.

But the problem is here

     java.lang.RuntimeException: Unable to start activity ComponentInfo{io.kodular.anwitamed.Sketchy/io.kodular.anwitamed.Sketchy.Screen2}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.Dialog.setCancelable(boolean)' on a null object reference
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3550)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3710)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2139)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at android.os.Handler.dispatchMessage(Handler.java:106)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at android.os.Looper.loop(Looper.java:236)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at android.app.ActivityThread.main(ActivityThread.java:8047)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at java.lang.reflect.Method.invoke(Native Method)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:600)
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:967)
06-27 18:25:53.997 12785 12785 E AndroidRuntime: Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.Dialog.setCancelable(boolean)' on a null object reference
06-27 18:25:53.997 12785 12785 E AndroidRuntime:        at com.varsha.CustomDialog.CustomDialog.DialogCancelable(Unknown Source:6)

Looks like you have done something wrong in Screen2 with a dialog extension by @varsha .
May you post your screen2 blocks ?

[bodymindpower (Anke)]

@Anwita_Divya Post the aia or a test aia (that reproduces this issue).

[Tekwizer (ArnaV Bhardwaj)]

@iamwsumit

logs of the apk

how did you that ?

[iamwsumit (Sumit Kumar)]

@Tekwizer

how did you that

A guide is published on MIT community by @Taifun

Capturing Device Logs using adb logcat

[bodymindpower (Anke)]

@Tekwizer

how did you that ?

… and / or here:

Apk File Doesn't Work

you do not provide any useful information… to find out more about the Runtime Error, you can use Logcat I normally use Eclipse and Logcat there, but if you have installed the App Inventor Software (see also Installing and Running the Emulator in AI2 | Explore MIT App Inventor), you already have everything you need to use logcat… How to use Logcat connect your device using USB with your computer in File Manager go to the App Inventor directory, which is C:\Program Files\App Inventor or…

[Jinx]

@Anwita_Divya As said by @iamwsumit there must be problem on screen 2 that’s why the app is closing as you can see my video [Post 26] the screen 1 works perfectly but as i was on emulator so that app didn’t closed and result nothing was loaded on screen 2 and also thanks @iamwsumit and @bodymindpower to provide two different or similar guides this helped me a lot as i am still a learner and want to learn more and more about softwares

[Still-learning (1-2-3-4...)]

How much time you set in designer page for clock? Set it as 2000 and try

[Anwita_Divya]

Yes, it was due to that extensionn. I removed that extension and now it is working fine. Thank You for the help!

[Jinx]

I also said this nice job @iamwsumit Post by Aditya