Android 6.0+ Unable to resume activity , did not call finish() prior to onResume() completing

Question

This my activity,no layout

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
}

@Override
protected void onStart() {
    super.onStart();
}

@Override
protected void onResume() {
    super.onResume();
    if (getIntent().getAction().equals(NfcAdapter.ACTION_NDEF_DISCOVERED)) {
        Parcelable[] rawMsgs = getIntent().getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
        if (rawMsgs != null) {
            NdefMessage[] msgs = new NdefMessage[rawMsgs.length];
            for (int i = 0; i < rawMsgs.length; i++) {
                msgs[i] = (NdefMessage) rawMsgs[i];
            }
            runNFCTagData(msgs[0].getRecords()[0].getPayload());
            startActivity(new Intent(this, AlarmList.class));
        } else {
            Toast.makeText(this, getResources().getString(R.string.nfc_ndef_not_found), Toast.LENGTH_LONG).show();
        }
    }
}

　 Run it on android 6.0+ and it will be broken, you can see Unable to resume activity , did not call finish() prior to onResume()completing', but 6.0- is OK.I find a solution and it worked, but I don`t know why?

This is my solution
　 @Override protected void onStart() { super.onStart(); setVisible(true); }

Possible duplicate of [Activity did not call finish? (API 23)](https://stackoverflow.com/questions/32169303/activity-did-not-call-finish-api-23) — Sam, Mar 11 '19 at 00:20

score 4 · Accepted Answer · edited May 18 '22 at 01:17

4

This is a requirement when you use Theme.NoActivity as documented:

Default theme for activities that don't actually display a UI; that is, they finish themselves before being resumed.

Per this blog post, this behavior is new to Android 6.0.

edited May 18 '22 at 01:17

Bink

1,934
1
25
41

answered Jan 17 '17 at 01:53

ianhanniballake

191,609
30
470
443

thanks, I know little about undocumented regression in Android 6.0 – sunpeijie Jan 17 '17 at 02:14
As per the Google+ post, the documentation never changed: it has always been something you've been required to do. It just didn't throw an Exception before. – ianhanniballake Jan 17 '17 at 02:19
What if I want to call startActivityForResult from such an activity? I cannot, and I am not finding a workaround for that – David Nov 30 '17 at 15:24
2

@David - just use `Theme.Translucent.NoTitleBar`, which doesn't have this same restriction. – ianhanniballake Nov 30 '17 at 16:15

score 0 · Answer 2 · answered Jun 07 '17 at 15:04

0

You are using API > 21, so you can use the following style on your activity :

Theme.Translucent.NoTitleBar

The trick with "setVisible(true)" is still not needed.

answered Jun 07 '17 at 15:04

tryp

1,120
20
26

Android 6.0+ Unable to resume activity , did not call finish() prior to onResume() completing

2 Answers2