Android cannot pass List of string arrays to service class

Question

I have this list of arrays that I need for my service to run

private List<String[]> commandList = new ArrayList<>();

Sample Data:

{"jump", "100", "100"}
{"walk", "100", "100"}
{"jump", "100", "100"}

I tried passing it through putExtra

Intent serviceIntent = new Intent(macroService.class.getName());
serviceIntent.putExtra("CommandList", commandList);
context.startService(serviceIntent);

however the putExtra method only allows me to input strings and string arrays. Is there any way to pass a list of string arrays?

You have to use intent.putStringArrayListExtra("key",commandList); and get it with getStringArrayListExtra("key"); — Opiatefuchs, Jan 20 '16 at 13:41
Or you can modify this answer by converting String[] to arrayList.....http://stackoverflow.com/questions/6355787/how-to-pass-arraylisthashmapstring-stringfrom-one-activity-to-another — Opiatefuchs, Jan 20 '16 at 14:01

Prerak Sola · Answer 1 · 2016-01-20T14:19:16.727

2

Use putStringArrayListExtra method instead of putExtra.

serviceIntent.putStringArrayListExtra("CommandList", commandList);

Also you can add your list in a HashMap and than pass this HashMap to next activity like below:

 HashMap<String, List> tmp = new HashMap<>();
 tmp.put("data", commandList);
 serviceIntent.putExtra("tmpData", tmp);

And to retrieve this data in the destination activity, you can do this:

 HashMap<String, List> tmp1 = (HashMap<String, List>) getIntent().getExtras().get("tmpData");
 List<String[]> testd = tmp1.get("data");

edited Jan 20 '16 at 14:19

answered Jan 20 '16 at 13:41

Prerak Sola

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I tried this, but it only allows me to put List not List – LuxuryWaffles Jan 20 '16 at 13:46
Can show the sample data of `commandList`? – Prerak Sola Jan 20 '16 at 13:57
See the updated answer. – Prerak Sola Jan 20 '16 at 14:19

score 0 · Answer 2 · answered Jan 20 '16 at 13:55

0

From what I can see there is no function that does what you want, but, depending on how you are building and using the list, you could instead use a Bundle to collect your arrays and then add them to the intent with putExtras(Bundle extras).

answered Jan 20 '16 at 13:55

gabga

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Android cannot pass List of string arrays to service class

2 Answers2