How to dynamically add multiple array-list in a List

Question

I want to add multiple array-list in a list and display in list-view using custom adapter with section. i have tried here is my code i tried

   for (int i=0;i<mModelJsoncatData.size();i++){
                if (mModelJsoncatData.get(i).getCatName().equals("Eating")) {
                    ListAll.add(new String(mModelJsoncatData.get(i).getCatName()));
                    ListAll.addAll(mModelJsonEating);
                }
                if (mModelJsoncatData.get(i).getCatName().equals("Feeling")) {
                    ListAll.add(new String(mModelJsoncatData.get(i).getCatName()));
                    ListAll.addAll(mModelJsonFeeling);
                }
                if (mModelJsoncatData.get(i).getCatName().equals("Listening to")) {
                    ListAll.add(new String(mModelJsoncatData.get(i).getCatName()));
                    ListAll.addAll(mModelJsonListening);
                }
                if (mModelJsoncatData.get(i).getCatName().equals("Watching")) {
                    ListAll.add(new String(mModelJsoncatData.get(i).getCatName()));
                    ListAll.addAll(mModelJsonWatching);
                }
            }
MAdapter adapter=new MAdapter(this,ListAll);
listview1.setAdapter(adapter);

but its not showing the desired results any suggestions or help needed

score 0 · Answer 1 · edited May 23 '17 at 11:46

0

What you want is a list of lists!

List<List<Integer>> lists = new ArrayList<List<Integer>>();
for (int i = 0; i < 4; i++) {
    List<Integer> list = new ArrayList<>();
    lists.add(list);
    // Use the list further...
}

To Merge 3 arraylist to one

List<String> combined = new ArrayList<String>();
combined.addAll(firstArrayList);
combined.addAll(secondArrayList);
combined.addAll(thirdArrayList);

Reference :-https://stackoverflow.com/a/8625256/7795876

edited May 23 '17 at 11:46

Community

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answered Apr 13 '17 at 07:52

Saurav Prakash

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i want to add multiple array-lists in a list and want to display in listview – Noman Malik Apr 13 '17 at 07:53
i have 5 array list and with different model classes and i want to display these in a single list view with section header one after another – Noman Malik Apr 13 '17 at 07:55
not worked because i have different data types in each array list and now idea about sections – Noman Malik Apr 13 '17 at 08:07

How to dynamically add multiple array-list in a List

1 Answers1