Android IMA SDK StrictMode violation

[Adrian Rodriguez]

I see very frequently the following StrictMode violation coming from the IMA SDK v3-3.4.0

E/StrictMode: A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.

                                                                    java.lang.Throwable: Explicit termination method 'close' not called

                                                                        at dalvik.system.CloseGuard.open(CloseGuard.java:180)

                                                                        at java.io.RandomAccessFile.<init>(RandomAccessFile.java:127)

                                                                        at com.android.webview.chromium.WebViewChromiumFactoryProvider.startChromiumLocked(WebViewChromiumFactoryProvider.java:16107)

                                                                        at com.android.webview.chromium.WebViewChromiumFactoryProvider.ensureChromiumStartedLocked(WebViewChromiumFactoryProvider.java:333)

                                                                        at com.android.webview.chromium.WebViewChromiumFactoryProvider.startYourEngines(WebViewChromiumFactoryProvider.java:427)

                                                                        at com.android.webview.chromium.WebViewChromium.init(WebViewChromium.java:162)

                                                                        at android.webkit.WebView.<init>(WebView.java:618)

                                                                        at android.webkit.WebView.<init>(WebView.java:554)

                                                                        at android.webkit.WebView.<init>(WebView.java:537)

                                                                        at android.webkit.WebView.<init>(WebView.java:524)

                                                                        at android.webkit.WebView.<init>(WebView.java:514)

                                                                        at com.google.ads.interactivemedia.v3.impl.ab.<init>(IMASDK:38)

                                                                        at com.google.ads.interactivemedia.v3.impl.aa.<init>(IMASDK:270)

                                                                        at com.google.ads.interactivemedia.v3.impl.h.<init>(IMASDK:288)

                                                                        at com.google.ads.interactivemedia.v3.impl.h.<init>(IMASDK:282)

                                                                        at com.google.ads.interactivemedia.v3.api.ImaSdkFactory.createAdsLoader(IMASDK:53)

[Chris Feldman (IMA SDK Team)]

Hi Adrian,

Thank you for reaching out to IMA SDK Support. I was not able to replicate this behavior in our IMA Sample App for Android with our sample ad tags. Can you please share with me the ad tag that you are using, as well as the specific user steps taken before you see that response?

Regards,

Chris Feldman

IMA SDK Team

[Dave]

Hi Chris,

I'm seeing a similar issue. It looks like it's caused by leaving the Activity while playing content when there is a loaded AdsManager with a future midroll to be played. ContentProgressProvider will be polled indefinitely and the Activity will be leaked as a consequence of it being the enclosing class. Destroying the AdsManager doesn't help.

• Project
• BasicExample
• Libs
• com.google.ads.interactivemedia.v3:interactivemedia:3.7.1
• com.google.android.gms:play-services-ads:10.2.0
• Ad Tag
• "https://pubads.g.doubleclick.net/gampad/ads?sz=640x480&iu=/124319096/external/ad_rule_samples&ciu_szs=300x250&ad_rule=1&impl=s&gdfp_req=1&env=vp&output=vmap&unviewed_position_start=1&cust_params=deployment%3Ddevsite%26sample_ar%3Dpremidpost&cmsid=496&vid=short_onecue&correlator="
• Any VMAP tag with a midroll should work
• Reproduce
• Load AdsManager
• Start playing content
• Leave activity while playing content before midroll gets a chance to play
• ContentProgressProvider will be polled indefinitely
• Activity will be destroyed, but will leak

Thank you,

Dave

[Chris Feldman (IMA SDK Team)]

Hi Dave,

Did you make any changes to the BasicExample? before testing? I'm not seeing this behavior when I turn on StrictMode and play your tag. Please let me know if there's anything else I need to reproduce this behavior.

Regards,

Chris Feldman

IMA SDK Team

[Dave]

Hi Chris,

I've attached the project I used to reproduce.

There are 3 symptoms that I believe are related. The latter 2 are easier to reproduce.

1. The original StrictMode CloseGuard violation
   
2. Indefinite polling of ContentProgressProvider
   
3. Activity leak StrictMode violation

• Steps to reproduce
  
• Enable "Strict Mode".
• Enable "Don't keep activities".
• Start MyActivity.
• Wait until the pre-roll ad completes and content starts playing. You should see "getContentProgress() returns ..." being polled and logged.
• Press back to leave MyActivity while content is playing.
• MyActivity should be destroyed, but finalize won't be called and "getContentProgress()" will be polled and logged indefinitely.
• Repeat and you'll see the StrictMode violation.

I added log statements in "onDestroy()" and "finalize()" for MyActivity and VideoFragment. You'll see that onDestroy() is called, but finalize is not. After starting MyActivity more than once, you can see the StrictMode violation.

03-28 14:11:44.935 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/MyActivity: onDestroy() called

03-28 14:11:44.935 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: onDestroy() called

03-28 14:11:45.107 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp E/StrictMode: class com.google.ads.interactivemedia.v3.samples.videoplayerapp.MyActivity; instances=2; limit=1

                                                                                                   android.os.StrictMode$InstanceCountViolation: class com.google.ads.interactivemedia.v3.samples.videoplayerapp.MyActivity; instances=2; limit=1

                                                                                                       at android.os.StrictMode.setClassInstanceLimit(StrictMode.java:1)

03-28 14:14:07.927 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:08.167 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:08.407 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:08.647 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:08.887 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:09.127 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:09.367 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:09.608 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:09.847 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:10.087 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:10.327 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:10.567 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:10.807 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:11.047 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:11.287 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:11.527 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:11.767 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

03-28 14:14:12.007 758-758/com.google.ads.interactivemedia.v3.samples.videoplayerapp D/VideoFragment: getContentProgress() returned VideoProgressUpdate [currentTime=-0.001, duration=-0.001]

Thanks,

Dave

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[Chris Feldman (IMA SDK Team)]

Hi Dave,

Thank you for providing more information. I will continue to investigate this issue.

Regards,

Chris Feldman

IMA SDK Team

[Dave]

Hi Chris,

Do you have any update on this? Were you able to reproduce the issue?

Thanks,

Dave

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[Chris Feldman (IMA SDK Team)]

Hi Dave,

I was able to reproduce the issue. The team is investigating, and though we don't have an update for you at this time, I will let you know as soon as I have any new information.

Regards,

Chris Feldman

IMA SDK Team

[juant...@gmail.com]

Hello Chris,

We were wondering if there's any update on this. I know you would let OP know but not sure if you meant that you will publicly let us know.

This is a rather severe problem if you work on apps that serve lots of video. Any workarounds would be appreciated.

Thanks,

[Chris Feldman (IMA SDK Team)]

Hi,

Thank you for reaching out about this issue. We are still looking into possible solutions. I will let you know as soon as I have more information.

Regards,

Chris Feldman

IMA SDK Team

[Jin Wang]

I'm seeing the same issue here using version 3.7.4. Is there any update on this? This issue is causing activity leaking which is pretty serious.

[Chris Feldman (IMA SDK Team)]

Hi,

Can you please try testing on the latest version of the SDK? I'm no longer able to reproduce the issue.

Regards,

Chris Feldman
IMA SDK Team

[Jin Wang]

Hey Chris,

Thanks for the reply. I can confirm that IMA SDK v3.8.2 has fixed this issue.

However, since we're using ExoPlayer, the latest version suffers from the issue mentioned here https://github.com/google/ExoPlayer/issues/3911. I know this is a separate issue, but just FYI.

Thanks again.

[Chris Feldman (IMA SDK Team)]

Hi,

Thank you for following up. I'm glad to hear that your issue has been resolved. Regarding the ExoPlayer issue, our team has no control over what version of the SDK their player is using. That being said, I can tell you that our team has resolved the IMA issue that is blocking them from updating. The fix should go live in an upcoming SDK release (release notes).

Regards,

Chris Feldman

IMA SDK Team