android 异常处理记录

It was working perfect when run from Android Studio but crashing when install from other sources

Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available

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In Android Studio 2.3 and higher, There is Instant Run which may affect your code.
Disable Instant Run
File -> Settings -> Build, Execution, Deployment -> Instant Run