Using Deep Link causes a "flash" that appears like multiple apps are opening [130362979]

Fixed

Bug

Status Update

No update yet.

Description

br...@gmail.com

created issue #1

Apr 11, 2019 07:16PM

Component used: Navigation
Version used: 2.1.0-alpha02
Devices/Android versions reproduced on: Pixel 3XL, APi 28

When using an implicit deep link to open an app to a destination that is not the root/home destination, the user experiences a weird "flash" on the device, where it appears to open the app, and then open the app again. See the attached animated gif for a demo of the flash effect.

The attached sample app, QueryString can be used to reproduce the issue. The app contains two destination fragments, RootFragment and ChildFragment. In the navigation graph, RootFragment is the start destination, and contains an action to navigate to ChildFragment. Child Fragment also has a <deeplink> with it's URI set to "

bradball.net/child".

To reproduce the "flash" effect:
1. open, build, and install the sample app on a device or emulator
2. Open the app to make sure it's working
3. Close the app (swipe it away from the recents screen).
3. Open a link to

https://bradball.net/child from another app. On an emulator, you can send a text message to the messages app with the URL in the message, and then tap on the link in the messages app.

When you tap on the link in the messages app, you'll see the "flash" of the app opening, and the the app opening again.

QueryString.zip

1.1 MB

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screenflash.gif

3.5 MB

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Comments

il...@google.com <il...@google.com> #2Apr 11, 2019 08:22PM

Assigned to il...@google.com.

A couple of questions:

1. Have you saw crash in real device or only in simulators?
2. Do you use dynamic feature for language ID?

th...@gmail.com <th...@gmail.com> #3Apr 11, 2019 08:43PM

Tested on Android 12 Emulator with custom executor, but cannot repro this issue.

br...@gmail.com <br...@gmail.com> #4Apr 11, 2019 09:24PM

Second crash in the description is from a real device. Experienced it myself on two different Xiaomi phones, plus lots of crashes from users in the Google Play console.
Dynamic features are not used in the application.

As a wild guess, I have downgraded build tools from 31.0.0 to 30.0.3, compileSdk from 31 to 30, and moved all work with Language ID to the service in a separate process (just to be sure that crash can kill secondary process instead of main). This combination is in beta for 2 days by now and I don't see any SIGSEGV crashes.

il...@google.com <il...@google.com> Jun 3, 2019 05:57PM

Reassigned to jb...@google.com.

ap...@google.com <ap...@google.com> #5Jun 3, 2019 09:45PM

Hmm, I feel the crash might be something related to separate/secondary process.

I also changed compileSdk and targetSDK to 31 but still cannot repro this issue.

jb...@google.com <jb...@google.com> #6Jun 3, 2019 09:50PM

Marked as fixed.

On the contrary, there was no separate process before, when crashes started.

In the new build (with the aforementioned changes) I can see SIGSEGV crash, but only one instead of dozens and it has a bit different backtrace:

signal 11 (SIGSEGV), code 1 (SEGV_MAPERR)
liblanguage_id_jni.so (offset 0x11e000)

backtrace:
  #00  pc 000000000003c7c0  /data/app/azagroup.reedy-mF7zTu2bv_ELlbFArwNgqA==/split_config.arm64_v8a.apk!lib/arm64-v8a/liblanguage_id_jni.so (offset 0x11e000)
  #00  pc 000000000003b960  /data/app/azagroup.reedy-mF7zTu2bv_ELlbFArwNgqA==/split_config.arm64_v8a.apk!lib/arm64-v8a/liblanguage_id_jni.so (offset 0x11e000)
  #00  pc 000000000003bb48  /data/app/azagroup.reedy-mF7zTu2bv_ELlbFArwNgqA==/split_config.arm64_v8a.apk!lib/arm64-v8a/liblanguage_id_jni.so (offset 0x11e000)
  #00  pc 000000000003bafc  /data/app/azagroup.reedy-mF7zTu2bv_ELlbFArwNgqA==/split_config.arm64_v8a.apk!lib/arm64-v8a/liblanguage_id_jni.so (offset 0x11e000)
  #00  pc 0000000000036c98  /data/app/azagroup.reedy-mF7zTu2bv_ELlbFArwNgqA==/split_config.arm64_v8a.apk!lib/arm64-v8a/liblanguage_id_jni.so (offset 0x11e000)
  #00  pc 0000000000032714  /data/app/azagroup.reedy-mF7zTu2bv_ELlbFArwNgqA==/split_config.arm64_v8a.apk!lib/arm64-v8a/liblanguage_id_jni.so (offset 0x11e000)
  #00  pc 0000000000031cac  /data/app/azagroup.reedy-mF7zTu2bv_ELlbFArwNgqA==/split_config.arm64_v8a.apk!lib/arm64-v8a/liblanguage_id_jni.so (offset 0x11e000)
  #00  pc 0000000000057438  /data/app/azagroup.reedy-mF7zTu2bv_ELlbFArwNgqA==/oat/arm64/base.odex (offset 0x57000)

Issue 130362979