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What causes an ANR (Application Not Responding)?

  1. A Blocking the main thread for roughly five seconds or more
  2. B Using too much memory
  3. C Too many activities in the back stack
  4. D A missing permission
Answer

Blocking the main thread for roughly five seconds or more

Database queries, large JSON parsing and disk I/O on the main thread are the usual causes.

All Android MCQs

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