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如何使用类Intent的方法将自定义类型的对象从一个Activity传递到另一个Activity？putExtra()

我正在努力从一个发送我的客户类的对象Activity并在另一个中显示它Activity.

客户类的代码:

public class Customer {

    private String firstName, lastName, Address;
    int Age;

    public Customer(String fname, String lname, int age, String address) {

        firstName = fname;
        lastName = lname;
        Age = age;
        Address = address;
    }

    public String printValues() {

        String data = null;

        data = "First Name :" + firstName + " Last Name :" + lastName
        + " Age : " + Age + " Address : " + Address;

        return data; …