Rejecting class because it failed compile-time verification Android

Question

One of my application suddenly fails on startup, with the following error message :

java.lang.VerifyError: Rejecting class com.sample.BufferManager

Answer 1

The issue is due to having a synchronized block inside a try-catch block, for example :

try {
    synchronized (mLock) {
        updateState();
    }
} catch (IllegalStateException e) {
}

Apparently this is not a good practice, but as soon as I change it like this it works :

synchronized(mLock) {
    try {
        updateState();
    } catch (IllegalStateException e) {
    }
}