Android安卓毕业设计，SpringBoot+MySQL+Android studio 实现一个二手交易平台APP
Android安卓二手交易APP，使用Android+springboot+MySQL开发，集成第三方即时聊天。
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Android毕业设计 Android 使用Java+kotlin 语言 后端使用 Java+springBoot 、mybatis、 mySQL，sqlite
源码可以出售，需要的私信。
主要实现的功能有：
（1）注册与登录，修改重置密码。
（2）浏览展示物品信息 、社区、轮播图、资讯、内容。
（3）发布二手物品、加入购物车、点赞、收藏、关注、留言、详聊。
（4）社区，可以点赞、评论回复或者买卖双方建立即时聊天。
（5）个人中心实现查看、管理关注、收藏、点赞、交易、消息、反馈、版本更新、浏览记录、个人信息管理。
贴出部分界面截图及主要代码。
1.1欢迎、登录界面
1.2 重置密码
实现重置密码的功能 模拟验证码 由后端发送。
4商品首页 
商品详情
社区
社区详情 
我的 
浏览记录 
侧边栏
修改位置 
版本更新 
贴出部分主要代码
登录loginActivity 的主要代码
class LoginActivity : BaseActivity() {
private var username: String=""
private var password: String=""
private lateinit var sqLiteHelper: SQLiteHelper
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_login)
sqLiteHelper= SQLiteHelper(this)
getUser()
login_username_edittext.addTextChangedListener(
object : TextWatcher {
override fun beforeTextChanged(
s: CharSequence,
start: Int,
count: Int,
after: Int
) {
}
override fun onTextChanged(
s: CharSequence,
start: Int,
before: Int,
count: Int
) {
}
override fun afterTextChanged(s: Editable) {
if(login_username_edittext.text.toString()!=username){
remember_password.setChecked(false)
login_password_edittext.setText("")
}
}
}
)
login_forget.setOnClickListener {
startActivity(Intent(this,ForgetActivity::class.java))
}
login_regeist.setOnClickListener {
startActivity(Intent(this,RegistActivity::class.java))
}
remember_password.setOnClickListener {
if (TextUtils.isEmpty(login_username_edittext.text.toString())||TextUtils.isEmpty(login_password_edittext.text.toString())){
toast(getString(R.string.inputnameandpass))
remember_password.setChecked(false)
}
else{
if (remember_password.isChecked){
// toast(getString(R.string.remember))
addUser()
}
else{
deleteUser()
toast("取消记住密码")
}
}
}
login_login.setOnClickListener {
FunctionUtil.throttle(3000){
if(TextUtils.isEmpty(login_username_edittext.text.toString())){
toast(getString(R.string.namenull))
return@throttle
}
if(TextUtils.isEmpty(login_password_edittext.text.toString())){
toast(getString(R.string.passnull))
return@throttle
}
var map = HashMap<String,String>()
map.put("username",login_username_edittext.text.toString().trim())
if(login_username_edittext.text.toString().trim().equals("admin"))
{
map.put("password", login_password_edittext.text.toString().trim())
}
else{
//使用MD5方式加密密码
map.put("password", Md5AndSha1.md5(login_password_edittext.text.toString().trim()))
}
//提交登录
RetrofitTools.post("login",map, com.ygh.yiwu.ui.userinfo.model.User::class.java,object :RetrofitTools.IRetrofitResponse{
override fun <T> success(succ: T) {
if(TextUtils.isEmpty(succ.toString())){
toast(getString(R.string.errorNP))
return
}else{
//请求成功
var user = succ as com.ygh.yiwu.ui.userinfo.model.User
if(user.userid>0){
//登陆成功
//toast("登录成功")
MyApplication.user = user
getToken()
/*延时5秒，关闭LoginActivity*/
Timer().schedule(3000){
finish()
}
}
else{
//失败
toast(getString(R.string.errorNP))
}
}
}
override fun failure(msg: String) {
//请求失败
toast(getString(R.string.errorNET))
}
})
}
}
}
fun getUser(){
val userList =sqLiteHelper.getUser()
if (userList.isNotEmpty()){
username=userList[userList.size-1].username
password=userList[userList.size-1].password
remember_password.setChecked(true)
login_username_edittext.setText(username)
login_password_edittext.setText(password)
}
else{
remember_password.setChecked(false)
login_username_edittext.setText("")
login_password_edittext.setText("")
}
}
fun addUser(){
val username=login_username_edittext.text.toString()
val password=login_password_edittext.text.toString()
if(!TextUtils.isEmpty(login_username_edittext.text.toString())&&!TextUtils.isEmpty(login_password_edittext.text.toString())){
val user=UserModel(username = username, password = password)
val status=sqLiteHelper.insertUser(user)
if(status>-1){
toast(getString(R.string.rempass))
}
else{
toast(getString(R.string.errorrempass))
}
}
else{
toast(getString(R.string.inputnull))
}
}
fun deleteUser(){
val username=login_username_edittext.text.toString()
sqLiteHelper.deleteUser(username)
}
}
2.物品发布主要代码
class InsertGoodsActivity : BaseActivity() {
var parts = ArrayList<MultipartBody.Part>()
var urls:String=""
var goodstypeid = "0"
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_insert_goods)
TongJi()
tongji_head_text.setText("发布商品")
goodstypeid = intent.getStringExtra("goodstypeid")!!
selectCamera.setOnClickListener {
var intent = Intent(applicationContext, TakeActivity::class.java)
intent.putExtra("takephoto", 5)
startActivityForResult(intent, 0x123)
}
submit_fornum.setOnClickListener {
FunctionUtil.throttle(5000){
if(TextUtils.isEmpty(insert_goods_title.text)){
toast("给商品取一个好的标题吧！")
// return@setOnClickListener
}
if (TextUtils.isEmpty(insert_goods_content.text)){
toast("详细介绍一下商品更容易卖出哦！")
// return@setOnClickListener
}
getdata(parts,insert_goods_content.text.toString())
}
}
}
//提交数据
fun getdata(parts:List<MultipartBody.Part>,content:String){
var map = HashMap<String,String>();
map.put("content",content)
map.put("title",insert_goods_title.text.toString())
map.put("userid", MyApplication.user.userid!!.toString())
map.put("oldprice", insert_goods_oldprice.text.toString())
map.put("price", insert_goods_price.text.toString())
map.put("stock", insert_goods_stock.text.toString())
map.put("remark1", insert_goods_remark1.text.toString())
map.put("goodstypeid", goodstypeid)
RetrofitTools.upload("insertGoods",map,parts,object: RetrofitTools.IRetrofitResponse{
override fun <T> success(succ: T) {
if("true".equals(succ.toString())){
toast("添加成功")
finish();
}else{
toast("添加失败")
}
}
override fun failure(msg: String) {
toast(getString(R.string.errorNET))
}
})
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (resultCode == 0x123) {
var timgs = data!!.getSerializableExtra("results") as List<TImage>;
var cameras = ArrayList<String>();
for (item in timgs) {
cameras.add(item.originalPath)
var file = File(item.originalPath);
var requestFile: RequestBody =
RequestBody.create(MediaType.parse("multipart/form-data"), file);
var body: MultipartBody.Part =
MultipartBody.Part.createFormData("picture", file.getName(), requestFile);
parts.add(body)
urls = "${urls}#${file.name}"
}
insert_fornum_imageview.setList(cameras)
}
}
}物品详情的主要代码
class GoodsInfoActivity : BaseActivity() {
lateinit var goods: com.ygh.yiwu.ui.goods.model.Goods;
@SuppressLint("SetTextI18n")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_goods_info)
TongJi()
tongji_head_text.setText("商品详情")
getdata()
goods = intent.getSerializableExtra("goods") as com.ygh.yiwu.ui.goods.model.Goods
insertRecords(goods.goodsid.toString())
var images = ArrayList<String>()
var pics = String()
pics=goods.pic
var pictures = listOf<String>()
pictures=pics.split("#")
for (i in pictures.indices){
images.add(MyApplication.hostFile+pictures[i])
}
goodsinfo_detail_iv.setDelayTime(2000);
goodsinfo_detail_iv.setImages(images.toMutableList()).setImageLoader(com.ygh.yiwu.utils.GlideImageLoader()).start()
goodsinfo_detail_stock.setText("剩余：${goods.stock}件")
goodsinfo_detail_content.setText(goods.content)
if (goods.remark1==null||goods.remark1=="0"){
goodsinfo_detail_remark1.setText("不支持退换")
}else{
goodsinfo_detail_remark1.setText("支持${goods.remark1}天内退换")
}
goodsinfo_detail_price.setText("￥${goods.price}")
goodsinfo_old_price.setText("原价￥${goods.oldprice}")
goodsinfo_old_price.getPaint().setFlags(Paint.STRIKE_THRU_TEXT_FLAG)//原价添加删除线
Glide.with(applicationContext).load(MyApplication.hostFile+goods.user.headPic).error(R.drawable.nopic).into(user_headpic)
user_nickname.setText("发布人：${ goods.user.nickname }")
user_address.setText("来自：${ goods.user.address }")
//toast(goods.user.nickname.toString())
//如果是自己发布的，隐蔽购物车和聊一聊和关注功能
if (goods.userid==MyApplication.user.userid){
goods_info_user.visibility = View.GONE
check_goodsinfo_order.visibility = View.GONE
attention.visibility=View.GONE
}
//关注
attention.setOnClickListener {
if (f!=0){
CircleDialog.Builder(this@GoodsInfoActivity)
.setTitle("提示")
.setText("是否要关注TA?")
.setPositive("确定", {
//toast("已关注！")
var map = HashMap<String,String>()
map.put("my_userid", MyApplication.user.userid.toString())
map.put("userid",goods.userid.toString())
RetrofitTools.get("insertAttention", map, String::class.java, object : RetrofitTools.IRetrofitResponse {
override fun <T> success(succ: T) {
if ("true".equals(succ)) {
toast("已关注！")
getdata()
} else {
toast("失败")
}
}
override fun failure(msg: String) {
toast("网络连接失败")
}
},
false
)
})
.setNegative("取消", null)
.show()
}
}
//我要留言
goodsinfo_discuss.setOnClickListener {
CircleDialog.Builder(this@GoodsInfoActivity)
.setTitle("留言")
.setInputHint("请输入留言内容")
.setPositiveInput("确定",object: OnInputClickListener {
override fun onClick(text: String?, v: View?) {
if (TextUtils.isEmpty(text)){
toast("内容不能为空")
return;
}
insertData(goods.goodsid.toString(),text!!)
}
})
.setNegative("取消", null)
.show()
}
//查看留言
check_goodsinfo_discuss.setOnClickListener {
var intent = Intent(this, ShowdiscussActivity::class.java)
intent.putExtra("movieid",goods.goodsid.toString())
startActivity(intent)
}
//我要收藏
check_goodsinfo_cang.setOnClickListener {
CircleDialog.Builder(this)
.setTitle("提示")
.setText("是否确定要收藏？")
.setPositive("确定", {
insertCang(goods.goodsid.toString());
})
.setNegative("取消", null)
.show()
}
//我要点赞
check_goodsinfo_praise.setOnClickListener {
CircleDialog.Builder(this)
.setTitle("提示")
.setText("是否确定要点赞？")
.setPositive("确定", {
insertPraise(goods.goodsid.toString());
})
.setNegative("取消", null)
.show()
}
//加入购物车
check_goodsinfo_order.setOnClickListener {
CircleDialog.Builder(this)
.setTitle("提示")
.setText("你确定要加入购物车吗？")
.setPositive("确定", {
insertshoppingcar(goods.goodsid.toString());
})
.setNegative("取消",null)
.show()
}
//聊一聊
goods_info_user.setOnClickListener {
var map1 = HashMap<String, String>();//
map1.put("userid", goods.userid.toString())
var map = HashMap<String, String>()
var i:Int=0
var map2 = HashMap<String, String>()
map2.put("username",MyApplication.user.username)
map2.put("nickname",MyApplication.user.nickname)
map2.put("friendusername",goods.user.username)
map2.put("friendnickname",goods.user.nickname)
map2.put("headpic",goods.user.headPic)
RetrofitTools.post("getAllUserNameByUserid",map1, com.ygh.yiwu.ui.userinfo.model.User::class.java,object :RetrofitTools.IRetrofitResponse{
override fun <T> success(succ: T) {
var users = succ as List<com.ygh.yiwu.ui.userinfo.model.User>
users.forEach {
map.put("username",it.username)
i=1
map.put("nickname",it.nickname)
}
// toast("${map.get("username").toString()}")
if (i==1){
var conversationType = Conversation.ConversationType.PRIVATE;
val uri =
Uri.parse("rong://" + applicationContext.getApplicationInfo().processName)
.buildUpon().appendPath("conversation")
.appendPath(conversationType.getName().toLowerCase(Locale.CHINA))
.appendQueryParameter("targetId",map.get("username").toString())
.appendQueryParameter("title", "username").build()
var intent = Intent("android.intent.action.VIEW", uri);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
intent.putExtra("username",map.get("nickname").toString())
startActivity(intent)
getChatData(map2)//买方加卖家好友
}
}
override fun failure(msg: String) {
toast("获取数据失败")
}
})
}
}
fun getChatData(map: HashMap<String, String>) {
var flag =true
var map1 = HashMap<String,String>()
map1.put("username", map.get("username").toString())
RetrofitTools.post(
"getAllChatByUsername",map1,
com.ygh.yiwu.ui.userinfo.model.Chat::class.java,
object : RetrofitTools.IRetrofitResponse {
override fun <T> success(succ: T) {
var news = succ as ArrayList<com.ygh.yiwu.ui.userinfo.model.Chat>;
news.forEach {
if (it.friendusername==goods.user.username)
{
flag=false
}
}
if(flag==true){
insertChat(map)
}
}
override fun failure(msg: String) {
toast(getString(R.string.errorNET));
}
})
}
fun insertChat(map: HashMap<String, String>){
RetrofitTools.get("insertChat", map, String::class.java, object : RetrofitTools.IRetrofitResponse {
override fun <T> success(succ: T) {
}
override fun failure(msg: String) {
toast("网络连接失败")
}
},
false
)
}
fun insertCang(targetid:String) {
var map1 = HashMap<String, String>();//map1 main insertCang data
map1.put("targetid", targetid)
map1.put("userid", MyApplication.user.userid.toString())
if (i==6||j==0){
RetrofitTools.get("insertCang", map1, String::class.java, object : RetrofitTools.IRetrofitResponse {
override fun <T> success(succ: T) {
if ("true".equals(succ)) {
toast("收藏成功！")
getdata()
} else {
toast("收藏失败")
}
}
override fun failure(msg: String) {
toast("加入收藏失败")
}
},
false
)}
if (i==0){
toast("重复收藏！")
}
if (i==1){
toast("该商品已下架！")
}
}
fun insertRecords(goodsid:String) {
var map = HashMap<String,String>()
map.put("userid", MyApplication.user.userid.toString())
map.put("goodsid", goodsid)
RetrofitTools.get("insertRecords", map, String::class.java, object : RetrofitTools.IRetrofitResponse {
override fun <T> success(succ: T) {
if ("true".equals(succ)) {
// toast("已添加！")
//getdata()
} else {
// toast("失败")
}
}
override fun failure(msg: String) {
toast(getString(R.string.errorNET))
}
},
false
)
}
fun getdata() {
var map = HashMap<String,String>()
map.put("userid",MyApplication.user.userid.toString())
map.put("remark1", "goods")
var map1 = HashMap<String,String>()
map1.put("userid",MyApplication.user.userid.toString())
var map2 = HashMap<String,String>()
map2.put("my_userid",MyApplication.user.userid.toString())
RetrofitTools.post("getAllPraiseByUseridAndRemark",map, com.ygh.yiwu.ui.praise.Praise::class.java,object :RetrofitTools.IRetrofitResponse{
override fun <T> success(succ: T) {
var praises = succ as List<com.ygh.yiwu.ui.praise.Praise>;
if (praises.isEmpty()){ c=0} // 点赞表空空如也
else{ c=1 }//点赞表不空
//判断是否点赞
praises.forEach{
if (it.targetid==goods.goodsid)// 物品重复点赞
{ d=0 }
if(goods.goodsid==0)
{d=1}
}
if (d==0){
check_goodsinfo_praise1.setImageResource(R.drawable.praise1)
check_goodsinfo_praise2.setText("已赞")
}
}
override fun failure(msg: String) {
toast("获取数据失败")
}
})
RetrofitTools.post("getTargetidByUserid",map1, com.ygh.yiwu.ui.cang.Cang::class.java,object :RetrofitTools.IRetrofitResponse{
override fun <T> success(succ: T) {
var cangs = succ as List<com.ygh.yiwu.ui.cang.Cang>;
if (cangs.isEmpty()){ j=0} // 收藏夹空空如也
else{ j=1 }//收藏夹不空
//判断是否收藏
cangs.forEach{
if (it.targetid==goods.goodsid)// 物品重复收藏
{ i=0 }
if(goods.goodsid==0)
{i=1}
}
if (i==0){
check_goodsinfo_cang1.setImageResource(R.drawable.shoucang1)
check_goodsinfo_cang2.setText("已收藏")
}
}
override fun failure(msg: String) {
toast("获取数据失败")
}
})
RetrofitTools.post("getAllAttentionByMyUserid",map2, com.ygh.yiwu.ui.attention.model.Attention::class.java,object :RetrofitTools.IRetrofitResponse{
override fun <T> success(succ: T) {
var attentions = succ as List<com.ygh.yiwu.ui.attention.model.Attention>;
if (attentions.isEmpty()){ e=0} // 关注空空如也
else{ e=1 }//不空
//判断是否关注
attentions.forEach{
// toast(it.user.nickname)
if (it.userid==goods.userid)// 重复
{ f=0 }
}
if (f==0){
attention.setText("已关注")
}
}
override fun failure(msg: String) {
toast("获取数据失败")
}
})
}
fun insertPraise(targetid:String) {
var map1 = HashMap<String, String>();//map1 main insertCang data
map1.put("targetid", targetid)
map1.put("userid", MyApplication.user.userid.toString())
map1.put("remark1", "goods")
if (d==6||c==0){
RetrofitTools.get("insertPraise", map1, String::class.java, object : RetrofitTools.IRetrofitResponse {
override fun <T> success(succ: T) {
if ("true".equals(succ)) {
toast("点赞成功！")
getdata()
} else {
toast("点赞失败")
}
}
override fun failure(msg: String) {
toast("点赞失败")
}
},
false
)}
if (d==0){
toast("重复点赞！")
}
if (d==1){
toast("该商品已下架！")
}
}
//发布评论
fun insertData(sid: String, content: String) {
var map1 = HashMap<String,String>() //map1 main getallcangbyuserid data
map1.put("userid",MyApplication.user.userid.toString())
RetrofitTools.post("getTargetidByUserid",map1, com.ygh.yiwu.ui.cang.Cang::class.java,object :RetrofitTools.IRetrofitResponse{
override fun <T> success(succ: T) {
var cangs = succ as List<com.ygh.yiwu.ui.cang.Cang>;
//判断是否为收藏中的商品
cangs.forEach{
if(goods.goodsid==0)//判断该商品是否下架
{k=0}
}
if (k==0){
toast("该商品已下架！")
}
else{
var map = HashMap<String, String>();
map.put("targetid", sid)
map.put("userid", MyApplication.user.userid!!.toString())
map.put("content", content)
map.put("remark1", "goods")
RetrofitTools.get("insertDiscuss", map, String::class.java, object : RetrofitTools.IRetrofitResponse {
override fun <T> success(succ: T) {
toast("发布成功")
}
override fun failure(msg: String) {
toast("发布失败")
}
})
}
}
override fun failure(msg: String) {
toast("获取数据失败")
}
})
}
fun insertshoppingcar(targetid:String) {
var map1= HashMap<String,String>() //map main getallcangbyuserid data
map1.put("userid",MyApplication.user.userid.toString())
map1.put("targetid", targetid)
map1.put("count","1")
var map = HashMap<String,String>() //map main getallcangbyuserid data
map.put("userid",MyApplication.user.userid.toString())
// map2.put("targetid", targetid)
RetrofitTools.post("getTargetidByUserid",map, com.ygh.yiwu.ui.cang.Cang::class.java,object :RetrofitTools.IRetrofitResponse{
override fun <T> success(succ: T) {
var cangs = succ as List<com.ygh.yiwu.ui.cang.Cang>;
//判断是否为收藏中的商品
cangs.forEach{
if(goods.goodsid==0)//判断该商品是否下架
{k=0}
}
if (k==0){
toast("该商品已下架！")
}
else{
//判断一下是否曾加入购物车
RetrofitTools.post("getscTargetidByUserid",map,com.ygh.yiwu.ui.shoppingcar.Shoppingcar::class.java,object :RetrofitTools.IRetrofitResponse{
override fun <T> success(succ: T) {
var shoppingcars= succ as List<Shoppingcar>;
//购物车为空
if (shoppingcars.isEmpty())
{
b=0
RetrofitTools.get("insertShoppingcar", map1, String::class.java, object : RetrofitTools.IRetrofitResponse {
override fun <T> success(succ: T) {
if ("true".equals(succ)) {
toast("加入成功")
} else {
toast("加入失败")
}
}
override fun failure(msg: String) {
toast("加入购物车失败")
}
}, false)
}
//购物车已存在该物品，只需数量再加一即可
shoppingcars.forEach {
if (it.targetid==goods.goodsid)
{
// 该物品存在，且数量不超过库存，数量加一
a=0
if (it.count<goods.stock){
var newcount= it.count+1
updateShoppingcar( it.shoppingcarid,newcount )
}
else {
toast("已添加至库存上限！")
}
}
}
if (a==6&&b==6){
RetrofitTools.get("insertShoppingcar", map1, String::class.java, object : RetrofitTools.IRetrofitResponse {
override fun <T> success(succ: T) {
if ("true".equals(succ)) {
toast("加入成功")
} else {
toast("加入失败")
}
}
override fun failure(msg: String) {
toast("加入购物车失败")
}
}, false)
}
}
override fun failure(msg: String) {
}
})
}
}
override fun failure(msg: String) {
toast("获取数据失败")
}
})
}
fun updateShoppingcar(shoppingcarid :Int, newcounts : Int){
var map = HashMap<String,String>();
map.put("shoppingcarid",shoppingcarid.toString())
map.put("count", newcounts.toString())
RetrofitTools.get("updateShoppingcar",map,String::class.java,object :RetrofitTools.IRetrofitResponse{
override fun <T> success(succ: T) {
if ("true".equals(succ)){
toast("加入成功")
}
else{
toast("加入失败")
}
}
override fun failure(msg: String) {
toast(getString(R.string.errorNET))
}
},false)
}
}
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