当我的应用程序包含多个活动时如何退出应用程序?

How to Exit an application when my app consists of multiple activities?

当我在 android 中有多个活动时如何退出该应用程序?

我已经尝试了 finish()System.exit(0),但其中 none 成功了。它所做的只是转到上一个 activity.

这是我的代码:

                 boolean insertionStatus = mydb.DataInsertion(email,  password, username, fathername, contact, birthday, user_address);

                        if (insertionStatus)
                        {
                            alert.setTitle("Registration Status");
                            alert.setMessage("You are successfully registered!\nDo you want to login now?");
                            alert.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    Intent intent = new Intent(RegistrationActivity.this, LoginActivity.class);
                                    startActivity(intent);
                                }
                            });

                            alert.setNegativeButton("No", new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    System.exit(0);
                                }
                            });
                            alert.create().show();

调用 finishAffinity(); 方法来完成之前的所有活动。

 finishAffinity();