想請問App內如何取得google play登錄的gmail帳號呢?
試過這個方法但無法取得, 在Android 8.0手機上運行，權限也有取得
AccountManager accountManager = AccountManager.get(context);
Account[] accounts = accountManager.getAccounts();
for(Account account : accounts){
Log.i("

1.runtime permission 2.android version