why this runtime is occured :Unable to instantiate activity ComponentInfo?

Question

when I try to define an spinner, this Run time exception is thrown. Why? enter image description here

oh，you cannot do this like instance a object at out of onCreate. you need to instance object at onCreate Method — birds, May 27 '15 at 04:41
You should call findViewById(int) after you call setcontentview(layout resId); Move the code after setContentView will work — Vishnu Prabhu, May 27 '15 at 04:41
**Never** post images of your code or the logcat, copy and paste it there instead! — Xaver Kapeller, May 27 '15 at 04:44

score 3 · Accepted Answer · answered May 27 '15 at 04:41

3

You have to initialize your spinner in the onCreate method, so move

CARS_TYPE = (Spinner)findViewById(...);

inside onCreate() after setContentView

one more thing, CARS_TYPE should not be a constant, better if you call it carsType instead

answered May 27 '15 at 04:41

Stefano Vuerich

1 Answers1