This is a convenient method if physical access to the device is an option, because the default UncaughtExceptionHandler in Android apps prints out the entire stack trace to Logcat before terminating the process, meaning the crash is effectively logged out to an accessible location for developers. If an app hasn’t got a crash reporting SDK installed, then the next best method for retrieving crash logs is to use adb to view logcat. In JVM languages, an Exception is thrown in exceptional circumstances, and contains debug information about the error condition that went wrong, such as a stack trace with file/line number information, and an error message. JVM stack traces are the most common type of crash that typical Android applications will encounter, as the majority of apps are written in either Kotlin or Java. In this blog post we’ll cover the three most important crash logs used by the system: exception stack traces, ANR traces, and NDK tombstones.
Fortunately, the Android Framework provides some great tools for debugging crashes, and provides several useful crash logs that developers can read to determine what caused that critical issue. Crashes on Android can be immensely frustrating for users, so much so that after experiencing as little as two crashes, the typical user will uninstall your app.
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