Dynamic Array input

Question

I was wondering how to make a code to let the user input values into a dynamic array, so lets say the first box the user enters 5, this will be the array length, then he enters another 5 numbers for the array, how do I make this dynamic, instead of assuming the array length will always be 5? and what do we use to enter the data, EditText? if so, does the EditText go inside a loop like :

  for(i=0;i<arrlength;i++)
  { 
    arr[i] = (EditText)findViewById(R.id.txtbound);
  }

would this be how I retrieve the data from the user? and after the user enters the specified values, in this case 5 values, how do we enter new screen? should I put a :

if(i == arrlength) startActivity(i);

inside the for loop?

Any help would be greatly appreciated

Community · Accepted Answer · 2017-05-23 12:20:13Z

2

From your description, it looks like you want to create a number of different EditText boxes after you enter the initial value. Let's handle the dynamic array first. Have you looked at any of the implementations of the Android List interface? An ArrayList can be used as follows:

ArrayList<Integer> integerList = new ArrayList<Integer>();
integer.add(1);
integer.add(2);

To pass data into a new activity, please see this post.

edited May 23, 2017 at 12:20

CommunityBot

11 silver badge

answered Dec 22, 2011 at 21:56

Chris

6843 silver badges18 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

David Over a year ago

Hey, yeah I know how to pass data to a new activity, and if I use your example above will it only allow for two values in the array?

barry Over a year ago

@david No, the arraylist will grow as you add elements

David Over a year ago

Hey, sorry, I tried to use your code but it wont work, it says that there's misplaced construct(s), could you show me what xml layout you'd use ?

Chris Over a year ago

@david For what? The ArrayList code is pretty general and does not necessarily apply to a specific layout. Now, if you want to add a new EditText with each entry, you may need to dynamically add things to the Layout.

Collectives™ on Stack Overflow

Dynamic Array input

1 Answer 1

4 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related