I have a class using try-catch-finally, and it works well in debug package. But when I turn on MinifyEnable, the app crashed with class verified rejected:
java.lang.VerifyError: Verifier rejected class A: ......: [0xFB6] copy1 v28<-v1 type=Imprecise Constant: 1 cat=3.
Turn off the minifyEnable can solve the error, but it is not the real reason absolutely. Moreover, a diffusion case happens when I just remove the finally part: the code works again! I couldn't understand what happened. And what I do in the finally part be like:enter image description here
Is there anyone can help me to figure out the real reason? Thanks a lot.
The java.lang.VerifyError: Verifier rejected class gennerally occurs when the bytecode does pass the verification of Android Runtime. It can be also caused due to optimization issues.
1.Add specific Progaurd/R8 rules to keep the class unchanged at the time of minification.
-keep class com.example.Test {
*;
}
2.Optimizing the code inside the finally block.
public class Test {
public Result test() {
Result result = new Result();
int b = 0;
try {
b = 1;
return result;
}
catch (Exception e) {
b = 2;
return result;
}
finally {
setResultA(result, b); //Some optimization here.
}
}
private void setResultA(Result result, int value) {
result.a = value;
}
class Result {
int a;
}
}
Hope this helps