How to keep edittexts values after calling another activity than back

问题

I have Activity A with some edittexts and a button.After user populates edittextsin Activity A.Click the button than calling Activity B ( Listview). User click on listitem and come to back Activity A. My problem is when i come back to Activity A all edittexts are empty. How i can save edittexts values. Tyvm

Activity A calls Activity B
Intent intent = new Intent(getApplicationContext(), HayvanKartiList.class);
                intent.putExtra("activityname",BuzagiKayitActivity.class);
                intent.putExtra("ciftlikoid", ciflikoid);
                startActivity(intent);

Activity B calls Activity A 
Intent i = new Intent(getApplicationContext(),  BuzagiKayitActivity.class);
            i.putExtra("kupeno", selItem.getKupeNo().toString());
            i.putExtra("hayvanoid", selItem.getOid().toString());
            startActivity(i);

回答1:

Do not call Actvity A from Actvity B.Just Call OnBackPressed use the below code to get result from Actvity B

In Activity A

//Activity A calls Activity B
Intent intent = new Intent(getApplicationContext(), HayvanKartiList.class);
                intent.putExtra("activityname",BuzagiKayitActivity.class);
                intent.putExtra("ciftlikoid", ciflikoid);
                startActivityForResult(intent, REQUEST_CODE);
@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_CODE) {
       // parse your returned values from data intent here
    }
  }

In Activity B

 @Override
public void onBackPressed() {

   getIntent().putExtra("kupeno", selItem.getKupeNo().toString());
   getIntent().putExtra("hayvanoid", selItem.getOid().toString());
   this.setResult(RESULT_OK, getIntent());
   super.onBackPressed();
}

To Call Activity A From Actvity B Call OnBackPressed

private void onItemClick(){
  onBackPressed();
}

来源：https://stackoverflow.com/questions/36196074/how-to-keep-edittexts-values-after-calling-another-activity-than-back