wordpress-mobile / wordpress-mobile/WordPress-Android

NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.endsWith(java.lang.String)' on a null ...

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[Type] Crash Gutenberg Posting/Editing
Dominant language
Kotlin
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Avg merge
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Description

Sentry Issue: JETPACK-ANDROID-81G

NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.endsWith(java.lang.String)' on a null object reference
    at com.google.android.exoplayer2.util.Util.inferContentType(Util.java:1840)
    at com.brentvatne.exoplayer.ReactExoplayerView.buildMediaSource(ReactExoplayerView.java:499)
    at com.brentvatne.exoplayer.ReactExoplayerView.access$2700(ReactExoplayerView.java:84)
    at com.brentvatne.exoplayer.ReactExoplayerView$6.run(ReactExoplayerView.java:449)
    at android.os.Handler.handleCallback(Handler.java:942)
...
(7 additional frame(s) were not displayed)

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the Sentry stack trace and inspect ReactExoplayerView.java around buildMediaSource at line 499, then compare its input with ExoPlayer's Util.java inferContentType at line 1840. Trace how the null value reaches this path and verify that the reported crash no longer occurs for the affected media input.

Written by the indexing model from the issue text.

Assessment

Tech stack
android, java, kotlin
Domain
mobile
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
32/100

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