How can I trace why users get an "Application Not Responding" in my Android app?

Question

I'm new to Android dev. Since last month, many users have reported that my app has crash "Application Not Responding".

My app is relied heavily on webview, I have check the server side but nothing wrong happens: the request always response less than 100ms.

This is the sample user agent:

Mozilla/5.0 (Linux; Android 11; SOG03 Build/61.0.D.2.179; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/98.0.4758.101 Mobile Safari/537.36

And this is the Google Analytics logs:

  #00  pc 000000000008033c  /apex/com.android.runtime/lib64/bionic/libc.so (syscall+28)
  #00  pc 000000000014c1f4  /apex/com.android.runtime/lib64/libart.so (art::ConditionVariable::WaitHoldingLocks(art::Thread*)+148)
  #00  pc 000000000038784c  /apex/com.android.runtime/lib64/libart.so (art::JNI::NewLocalRef(_JNIEnv*, _jobject*)+436)
  #00  pc 0000000002806fdc  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 00000000020f8f90  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 00000000020f3944  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 00000000020f2c48  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 0000000001ea24d0  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 00000000020f3a0c  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 0000000004706660  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 0000000001ea04d4  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 0000000001ea0d68  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 000000000204d47c  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 000000000204f930  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 0000000001ea6e3c  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 00000000038db4c0  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 00000000038db480  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 00000000033819e8  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 000000000337dce4  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 0000000003c53b90  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 0000000003c53b44  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 0000000003c53acc  /data/app/com.google.android.webview-LmvD2NigrLxQnUwb47Tgqw==/base.apk!libmonochrome.so (???)
  #00  pc 00000000000183d0  /system/lib64/libutils.so (android::Looper::pollInner(int)+832)
  #00  pc 0000000000017ff0  /system/lib64/libutils.so (android::Looper::pollOnce(int, int*, int*, void**)+56)
  #00  pc 000000000013ba08  /system/lib64/libandroid_runtime.so (android::android_os_MessageQueue_nativePollOnce(_JNIEnv*, _jobject*, long, int)+44)
  at android.os.MessageQueue.nativePollOnce (Native method)
  at android.os.MessageQueue.next (MessageQueue.java:339)
  at android.os.Looper.loop (Looper.java:314)
  at android.app.ActivityThread.main (ActivityThread.java:7418)
  at java.lang.reflect.Method.invoke (Native method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:492)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:935)

score -1 · Answer 1 · answered Mar 18 '22 at 07:23

-1

Required Android developer reading: ANRs

HTTP requests should not be performed on the main (UI) thread of an Android app. You need to use concurrency (threading) to perform any work that is slow, which includes web requests, file I/O, database operations, etc.

answered Mar 18 '22 at 07:23

zen_of_kermit

1,404
2
13
19

I'm not making any HTTP request in the app side, this ANR happen when the webview lazy-loading ~10 image – Phúc Hậu Trần Mar 18 '22 at 09:35
Share your code if you want more help. – zen_of_kermit Mar 18 '22 at 17:06
Lol someone is downvoting/brigading all my answers from forever ago. How tragically pathetic. Any help from a moderator? – zen_of_kermit Aug 29 '23 at 20:41

How can I trace why users get an "Application Not Responding" in my Android app?

1 Answers1