android - 通过对象的属性之一搜索对象的 ArrayList

Question

我有一个ArrayList，其中通过以下代码生成并存储对象:

btSubmit.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            members.add(new member (name, id, mail, ccard, address));
            Toast.makeText(MemReg_activity.this, "Member Added", Toast.LENGTH_LONG).show(); 
            etname.setText("");
        }
    });

现在我想通过其他 Activity 中的名称搜索此列表 有没有办法做到这一点 ？ 如果没有，除了使用 ArrayList 之外还有其他方法可以帮助我做到这一点吗？

成员(member)等级

package com.fawzyx.movie_rental_store;

public class Member extends Customer {

    String id;
    String mail;
    String ccard;
    String address;

    public Member (String name, String id, String mail, String ccard, String address) {
        this.name = name; 
        this.id = id;
        this.mail = mail;
        this.ccard = ccard;
        this.address = address;
    }

    public String getName()
    {
        return name;    
    }
}

Answer 1

如果name是唯一的，则通过name查找成员的方法:

public Member findMemberByName(String name) {
    // go through list of members and compare name with given name
    for(Member member : members) {
        if (member.getname().equals(name)) {
            return member; // return member when name found
        }
    }
    return null; // return null when no member with given name could be found
}

如果 name 不唯一，该方法将返回一个包含所有匹配项的 ArrayList

public ArrayList<Member> findMemberByName(String name) {
    ArrayList<Member> matches = new ArrayList<Member>();
    // go through list of members and compare name with given name
    for(Member member : members) {
        if (member.getname().equals(name)) {
            matches.add(member); // adds matching member to the return list
        }
    }
    return matches; // return the matches, which is empty when no member with the given name was found
}

要在另一个Activity中执行此操作，您必须将members传递给另一个Activity。请参阅Starting another Activity