Feat : #11 채팅 UI 만들기

app/build.gradle

@@ -1,6 +1,7 @@
 plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.android'
+    id("com.google.gms.google-services")
 }
 
 android {
@@ -42,9 +43,13 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.6.1'
     implementation 'com.google.android.material:material:1.5.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'com.google.firebase:firebase-database-ktx:20.0.4'
+    implementation 'com.google.firebase:firebase-auth-ktx:22.0.0'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+    implementation(platform("com.google.firebase:firebase-bom:32.2.0"))
+    implementation("com.google.firebase:firebase-analytics-ktx")
 
     implementation "androidx.viewpager2:viewpager2:1.0.0"
 

app/google-services.json

@@ -0,0 +1,69 @@
+{
+  "project_info": {
+    "project_number": "491831579256",
+    "firebase_url": "https://wonderwoman-eeff2-default-rtdb.firebaseio.com",
+    "project_id": "wonderwoman-eeff2",
+    "storage_bucket": "wonderwoman-eeff2.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:491831579256:android:ce8f3851848cedfc9e538d",
+        "android_client_info": {
+          "package_name": "com.example.wonderwoman"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "491831579256-og7o8s2d5ejtmkdgujsevqpau9ovpos7.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyDaZ4_qjv-AYez5zqGqTMVkVAelJvGpgd4"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "491831579256-og7o8s2d5ejtmkdgujsevqpau9ovpos7.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:491831579256:android:b73ae3733bdc9d449e538d",
+        "android_client_info": {
+          "package_name": "com.soyaa.wonderwoman"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "491831579256-og7o8s2d5ejtmkdgujsevqpau9ovpos7.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyDaZ4_qjv-AYez5zqGqTMVkVAelJvGpgd4"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "491831579256-og7o8s2d5ejtmkdgujsevqpau9ovpos7.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

app/src/main/AndroidManifest.xml

@@ -21,6 +21,8 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity android:name=".UserList"> </activity>
+        <activity android:name=".ChatActivity"> </activity>
     </application>
 
 </manifest>

app/src/main/java/com/example/wonderwoman/ChatActivity.kt

@@ -0,0 +1,95 @@
+package com.example.wonderwoman
+
+
+import android.os.Bundle
+import android.os.Binder
+import android.os.PersistableBundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.recyclerview.widget.LinearLayoutManager
+import com.example.wonderwoman.databinding.ActivityChatBinding
+import com.google.firebase.auth.FirebaseAuth
+import com.google.firebase.database.*
+
+class ChatActivity : AppCompatActivity() {
+    private lateinit var receiverName: String
+    private lateinit var receiverUid: String
+
+    //바인딩 객체
+    private lateinit var binding: ActivityChatBinding
+
+    lateinit var mAuth: FirebaseAuth
+    lateinit var mDbRef: DatabaseReference
+
+    private lateinit var receiverRoom:String//받는 대화방
+    private lateinit var senderRoom: String//보내는 대화방
+
+    private lateinit var messageList: ArrayList<Message>
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding= ActivityChatBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        //초기화
+        messageList=ArrayList()
+        val messageAdapter: MessageAdapter = MessageAdapter(this, messageList)
+
+        //RecyclerView
+        binding.chatRecyclerview.layoutManager = LinearLayoutManager(this)
+        binding.chatRecyclerview.adapter=messageAdapter
+
+        //넘어온 데이터 변수에 담기
+        receiverName=intent.getStringExtra("name").toString()
+        receiverUid=intent.getStringExtra("uId").toString()
+
+        mAuth=FirebaseAuth.getInstance()
+        mDbRef=FirebaseDatabase.getInstance().reference
+
+        //접속자 Uid
+        val senderUid=mAuth.currentUser?.uid
+
+        //보낸이 방
+        senderRoom=receiverUid+senderUid
+
+        //받는이 방
+        receiverRoom=senderUid+receiverUid
+
+        //액션바에 상대방 이름 보여주기
+        supportActionBar?.title=receiverName
+
+        //메세지전송
+        binding.sendBtn.setOnClickListener{
+            val message = binding.messageEdit.text.toString()
+            val messageObject=Message(message,senderUid)
+
+            //데이터 저장
+            mDbRef.child("chats").child(senderRoom).child("messages").push()
+                .setValue(messageObject).addOnSuccessListener {
+                    //저장 성공하면
+                    mDbRef.child("chats").child(receiverRoom).child("messages").push()
+                        .setValue(messageObject)
+                }
+            //입력 부분 초기화
+            binding.messageEdit.setText("")
+        }
+        //메세지 가져오기
+        mDbRef.child("chats").child(senderRoom).child("messages")
+            .addValueEventListener(object : ValueEventListener{
+                override fun onDataChange(snapshot: DataSnapshot) {
+                    messageList.clear()
+
+                    for(postSnapshat in snapshot.children){
+                        val message=postSnapshat.getValue(Message::class.java)
+                        messageList.add(message!!)
+                    }
+                    //적용 화면에 보이게 하기
+                    messageAdapter.notifyDataSetChanged()
+                }
+
+                override fun onCancelled(error: DatabaseError) {
+
+                }
+
+            })
+    }
+}

app/src/main/java/com/example/wonderwoman/Login.kt

@@ -0,0 +1,79 @@
+package com.example.wonderwoman
+
+import android.content.Intent
+import android.os.Bundle
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import com.example.wonderwoman.databinding.ActivityLoginBinding
+import com.google.firebase.auth.FirebaseAuth
+import com.google.firebase.auth.ktx.auth
+import com.google.firebase.database.DatabaseReference
+import com.google.firebase.database.ktx.database
+import com.google.firebase.ktx.Firebase
+
+class Login : AppCompatActivity() {
+    lateinit var mAuth: FirebaseAuth
+
+    private lateinit var mDbRef: DatabaseReference
+
+    val name = "somin333"
+    val email = "[email protected]"
+    val password = "somin455"
+
+    private lateinit var binding: ActivityLoginBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding= ActivityLoginBinding.inflate(layoutInflater)
+        val view=binding.root
+        setContentView(view)
+
+        //인증초기화
+        mAuth = Firebase.auth
+
+        //db초기화
+        mDbRef = Firebase.database.reference
+
+        binding.button.setOnClickListener{
+            signup(name,email,password)
+        }
+        binding.button2.setOnClickListener{
+            login(email, password)
+        }
+
+    }
+    //로그인
+
+    private fun login(email: String,password:String){
+        mAuth.signInWithEmailAndPassword(email, password)
+            .addOnCompleteListener(this) { task ->
+                if (task.isSuccessful) {
+                    val intent2: Intent = Intent(this,UserList::class.java)
+                    startActivity(intent2)
+                    finish()
+                    Toast.makeText(this,"로그인성공", Toast.LENGTH_SHORT).show()
+                } else {
+                    Toast.makeText(this,"로그인실패", Toast.LENGTH_SHORT).show()
+                }
+            }
+    }
+
+    //회원가입
+    private fun signup(name: String, email: String,password: String) {
+        mAuth.createUserWithEmailAndPassword(email, password)
+            .addOnCompleteListener(this) { task ->
+                if (task.isSuccessful) {
+                    val intent: Intent = Intent(this, Login::class.java)
+                    startActivity(intent)
+                    addUserToDatabase(name, email, mAuth.currentUser?.uid!!)
+                    Toast.makeText(this,"회원가입성공", Toast.LENGTH_SHORT).show()
+                } else {
+                    Toast.makeText(this,"회원가입실패",Toast.LENGTH_SHORT).show()
+                }
+            }
+    }
+    private fun addUserToDatabase(name: String,email: String,uId: String){
+        mDbRef.child("user").child(uId).setValue(User(name, email, uId))
+        Toast.makeText(this,"db성공", Toast.LENGTH_SHORT).show()
+    }
+}

app/src/main/java/com/example/wonderwoman/Message.kt

@@ -0,0 +1,8 @@
+package com.example.wonderwoman
+
+data class Message(
+    var message: String?,
+    var sendId: String?
+){
+    constructor():this("","")
+}

app/src/main/java/com/example/wonderwoman/MessageAdapter.kt

@@ -0,0 +1,66 @@
+package com.example.wonderwoman
+
+import android.content.Context
+import android.os.Message
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.google.firebase.auth.FirebaseAuth
+
+class MessageAdapter(private val context: Context, private val messageList: ArrayList<com.example.wonderwoman.Message>):
+        RecyclerView.Adapter<RecyclerView.ViewHolder>(){
+
+    private val receive=1
+    private val send=2
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+        return if(viewType==1){//받는 화면
+            val view: View=LayoutInflater.from(context).inflate(R.layout.activity_receive,parent,false)
+            ReceiveViewHolder(view)
+        }else{//보내는 화면
+            val view: View=LayoutInflater.from(context).inflate(R.layout.activity_send,parent,false)
+            SendViewHolder(view)
+        }
+    }
+
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
+        //현재 메세지
+        val currentMessage = messageList[position]
+
+        //보내는 데이터
+        if(holder.javaClass==SendViewHolder::class.java){
+            val viewHolder = holder as SendViewHolder
+            viewHolder.sendMessage.text=currentMessage.message
+        }else{//받는 데이터
+            val viewHolder = holder as ReceiveViewHolder
+            viewHolder.receiveMessage.text=currentMessage.message
+
+        }
+    }
+    override fun getItemCount(): Int {
+        return messageList.size
+    }
+
+    override fun getItemViewType(position: Int): Int {
+        //메세지 값
+        val currentMessage = messageList[position]
+
+        return if(FirebaseAuth.getInstance().currentUser?.uid.equals(currentMessage.sendId)){
+            send
+        }else{
+            receive
+        }
+    }
+
+
+    //보낸쪽
+    class SendViewHolder(itemView: View): RecyclerView.ViewHolder(itemView){
+        val sendMessage: TextView= itemView.findViewById(R.id.send_message_text)
+    }
+    //받는쪽
+    class ReceiveViewHolder(itemView: View): RecyclerView.ViewHolder(itemView){
+        val receiveMessage: TextView=itemView.findViewById(R.id.receive_message_text)
+    }
+}