Android app ClassNotFoundException for main activity

Question

Most of the devices can run my app but I got this error report :

java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.company.app/com         


        

Answer 1

I just ran into this problem. Turns out it was because I had moved my MainActivity into a new package.

What I did was move it from

com.example.MainActivity

into

Activity

so in my manifest it looked like this:

 android:name="Activity.MainActivity"`

Solved it by moving it back into the original package. It can also be solved by renaming your packages correctly:

Eg: com.example.Activity.MainActivity

Hope this helps someone.