获取android中的2D ArrayList内的值？

Question

I have a 2D array like ...

ArrayList<ArrayList<MParsingClass>> 2d_arraylist = new ArrayList<ArrayList<MParsingClass>>();

I want to get all the Value of the internal Object class like the value of position ...

2d_arraylist [0][1] and gradually so on..... 

Any Help Please ??

Answer 1

That would work if you were dealing with nested arrays , but you are dealing with nested ArrayList s you have to use ArrayList class methods to access its data, namely the get() method.

You need to use:

2d_arraylist.get(0).get(1);

get(0) gets the first row from your array of arrays (an ArrayList)

get(1) gets the second column from the row you have selected (an MParsingClass)

Answer 2

You Have to make a 2 for loop like this ...

for(int i=o ; i< size of 2d array ;i++)

// here you have to make another ArrayList which will get the positon of the "i th" //array of your 2D array..

ArrayList<MParsingClass> new_array_list = 2d_arraylist .get(position);

for(int j=o ; i<size of  new_array_list ;i++)

new_array_list.get(your get value)


{

}

Answer 3

This should work:

for(i=0; i<2d_arraylist.size(); i++) {
    ArrayList<MParsingClass> temp = 2d_arraylist.get(i);
    for(j=0; j<temp.size(); j++) {
        MParsingClass obj = temp.get(j);
        //To-Do .....
    }
}