Bundle loses its values between activities

Question

I use the following codes to start activity with bundle extras data, and I can see the data has saved in Intent extras:

public static Intent newIntent(Context packageContext, AccountItem account, TransactionItem transaction) {
    Bundle args = new Bundle();
    args.putParcelable("arg_key_account", account);
    args.putParcelable("arg_key_transaction", transaction);
    args.putInt("test_key", 18);

    Intent intent = new Intent(packageContext, TransactionConnectActivity.class);
    intent.putExtra("arg_key", args);
    intent.putExtra("test_key", 21);
    return intent;
}

However, when I try to get bundle extras data from intent, the bundle has no data:

protected void onCreate(@Nullable Bundle savedInstanceState) {
    ...
    Intent intent = getIntent();
    if (intent != null) {
        int test = intent.getIntExtra("test_key", -1);
        Bundle args = intent.getExtras().getBundle("arg_key");
    }
    ...
}

The custom object have implement Parcelable, and all members have been written to parcel. and I have read these questions and answers, but still cannot figure out where i am wrong?

Too careless, I use `writeValue` to parcel a String member, which must use `writeString`. — Weiyi, Jul 06 '17 at 15:58
Please answer your own question and accept that answer. This will remove the question from the list of unanswered questions. Or just delete the question if it has no value. Thanks. — David Wasser, Jul 06 '17 at 20:00

score 1 · Accepted Answer · answered Jul 07 '17 at 01:45

To make sure Parcelable works, should use correct method to writeToParcel and createFromParcel, otherwise Android cannot retrieve data correctly which will cause createFromParcel returns a null object.

As for this issue here, I use writeValue to parcel a String member, which must use writeString.

Bundle loses its values between activities

1 Answers1