What is 'android.security.MessageDigest''?

Question

One of several thousand customers reported an error in one of my apps. The error is:

java.lang.NoClassDefFoundError - android.security.MessageDigest
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Answer 1

The MessageDigest class is a helper class used to encode/decode keys, using common methods such as MD5 or SHA-1.

It seems that the class android.security.MessageDigest was removed from Honeycomb and later releases of Android, and must be replaced by java.security.MessageDigest (see this page)

Try downloading the latest version of the Google Maps API and rebuild your application with targetSDK set to the highest available (as of today it should be 16 / Jelly Bean).