How to send hashmap value to another activity using an intent
Solution 1:
Java's HashMap class extends the Serializable
interface, which makes it easy to add it to an intent, using the Intent.putExtra(String, Serializable)
method.
In the activity/service/broadcast receiver that receives the intent, you then call
Intent.getSerializableExtra(String)
with the name that you used with putExtra.
For example, when sending the intent:
HashMap<String, String> hashMap = new HashMap<String, String>();
hashMap.put("key", "value");
Intent intent = new Intent(this, MyOtherActivity.class);
intent.putExtra("map", hashMap);
startActivity(intent);
And then in the receiving Activity:
protected void onCreate(Bundle bundle) {
super.onCreate(savedInstanceState);
Intent intent = getIntent();
HashMap<String, String> hashMap = (HashMap<String, String>)intent.getSerializableExtra("map");
Log.v("HashMapTest", hashMap.get("key"));
}
Solution 2:
I hope this must work too.
in the sending activity
Intent intent = new Intent(Banks.this, Cards.class);
intent.putExtra("selectedBanksAndAllCards", (Serializable) selectedBanksAndAllCards);
startActivityForResult(intent, 50000);
in the receiving activity
Intent intent = getIntent();
HashMap<String, ArrayList<String>> hashMap = (HashMap<String, ArrayList<String>>) intent.getSerializableExtra("selectedBanksAndAllCards");
when I am sending a HashMap like following,
Map<String, ArrayList<String>> selectedBanksAndAllCards = new HashMap<>();
Hope it would help for someone.