方法在ArrayList不适用于参数(int, String)

i've look on google and on the stack overflow and have not been able to find an answer that wants to work. I'm following a tutorial from the book "Professional android 4 application development" that creates a To do list. the only error in my code is what eclipse is giving me as an error message in my code, once i can fix this i believe it should run fine but i have been staring at it for an hour now and the frustration has got to me i can't understand what is wrong with the code and why i'm getting the error message in my code.i've look on google and on the stack overflow a