综合实例-联系人信息管理

ContactsDemo.zip

准备知识

准备知识：
1.了解系统联系人的结构
2.表结构
方法：
1.查看电话应用的源码
2.利用搜索引擎查找相关信息

AndroidManifest.xml

PersonInfo.java

package com.example.contactsdemo;
public class PersonInfo {
    private int _id;
    private String name;
    private String email;
    private String phone;
    private String address;
    public int get_id() {
        return _id;
    }
    public void set_id(int _id) {
        this._id = _id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public String getPhone() {
        return phone;
    }
    public void setPhone(String phone) {
        this.phone = phone;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    @Override
    public String toString() {
        return "PersonInfo{" +
                "_id=" + _id +
                ", name='" + name + '\'' +
                ", email='" + email + '\'' +
                ", phone='" + phone + '\'' +
                ", address='" + address + '\'' +
                '}';
    }
}

MainActivity.java

package com.example.contactsdemo;
public class PersonInfo {
    private int _id;
    private String name;
    private String email;
    private String phone;
    private String address;
    public int get_id() {
        return _id;
    }
    public void set_id(int _id) {
        this._id = _id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public String getPhone() {
        return phone;
    }
    public void setPhone(String phone) {
        this.phone = phone;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    @Override
    public String toString() {
        return "PersonInfo{" +
                "_id=" + _id +
                ", name='" + name + '\'' +
                ", email='" + email + '\'' +
                ", phone='" + phone + '\'' +
                ", address='" + address + '\'' +
                '}';
    }
}

activity_main.xml