Intent - Put List Extra

//Example MainActivity

Intent intent = new Intent(MainActivity.this, NewActivity.class);
intent.putStringArrayListExtra("data", (ArrayList<String>) List);
intent.setClass(getApplicationContext(), NewActivity.class);
startActivity(intent);

//Example NewActivity
if (getIntent().getExtras() != null) {
for(String a : getIntent().getExtras().getStringArrayList("data")) {
List.add(a);
}
}

//This will export your String List on old to new activity

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