HW-4 DataBinding 적용

2003/mtjin/AndroidArchitectureStudy/app/build.gradle

@@ -2,8 +2,6 @@ apply plugin: 'com.android.application'
 
 apply plugin: 'kotlin-android'
 
-apply plugin: 'kotlin-android-extensions'
-
 apply plugin: 'kotlin-kapt'
 
 android {
@@ -27,6 +25,9 @@ android {
         targetCompatibility = "8"
         sourceCompatibility = "8"
     }
+    dataBinding {
+        enabled = true
+    }
 }
 
 dependencies {

2003/mtjin/AndroidArchitectureStudy/app/src/main/java/com/mtjin/androidarchitecturestudy/ui/login/LoginActivity.kt

@@ -2,51 +2,44 @@ package com.mtjin.androidarchitecturestudy.ui.login
 
 import android.content.Intent
 import android.os.Bundle
-import android.widget.Button
-import android.widget.EditText
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
+import androidx.databinding.DataBindingUtil
 import com.mtjin.androidarchitecturestudy.R
 import com.mtjin.androidarchitecturestudy.data.login.source.LoginRepository
 import com.mtjin.androidarchitecturestudy.data.login.source.LoginRepositoryImpl
 import com.mtjin.androidarchitecturestudy.data.login.source.local.LoginLocalDataSource
 import com.mtjin.androidarchitecturestudy.data.login.source.local.LoginLocalDataSourceImpl
+import com.mtjin.androidarchitecturestudy.databinding.ActivityLoginBinding
 import com.mtjin.androidarchitecturestudy.ui.search.MovieSearchActivity
 import com.mtjin.androidarchitecturestudy.utils.PreferenceManager
 
 class LoginActivity : AppCompatActivity(), LoginContract.View {
     private lateinit var presenter: LoginContract.Presenter
-    private lateinit var etId: EditText
-    private lateinit var etPw: EditText
-    private lateinit var btnLogin: Button
-
+    private lateinit var binding: ActivityLoginBinding
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_login)
-        initView()
-        initListener()
+        initDataBinding()
         inject()
     }
 
+    private fun initDataBinding() {
+        binding =
+            DataBindingUtil.setContentView(this, R.layout.activity_login)
+        binding.login = this
+    }
+
     private fun inject() {
         val preferenceManager = PreferenceManager(this)
         val loginLocalDataSource: LoginLocalDataSource = LoginLocalDataSourceImpl(preferenceManager)
         val loginRepository: LoginRepository = LoginRepositoryImpl(loginLocalDataSource)
         presenter = LoginPresenter(this, loginRepository)
     }
 
-    private fun initView() {
-        etId = findViewById(R.id.et_id)
-        etPw = findViewById(R.id.et_pw)
-        btnLogin = findViewById(R.id.btn_login)
-    }
-
-    private fun initListener() {
-        btnLogin.setOnClickListener {
-            val id = etId.text.toString().trim()
-            val pw = etPw.text.toString().trim()
-            presenter.doLogin(id, pw)
-        }
+    fun onLoginClick() {
+        val id = binding.etId.text.toString().trim()
+        val pw = binding.etPw.text.toString().trim()
+        presenter.doLogin(id, pw)
     }
 
 
@@ -56,11 +49,11 @@ class LoginActivity : AppCompatActivity(), LoginContract.View {
     }
 
     override fun showIdEmptyError() {
-        etId.error = getString(R.string.id_empty_error_msg)
+        binding.etId.error = getString(R.string.id_empty_error_msg)
     }
 
     override fun showPwEmptyError() {
-        etPw.error = getString(R.string.pw_empty_error_msg)
+        binding.etPw.error = getString(R.string.pw_empty_error_msg)
     }
 
     override fun goMovieSearch() {

2003/mtjin/AndroidArchitectureStudy/app/src/main/java/com/mtjin/androidarchitecturestudy/ui/search/MovieAdapter.kt

@@ -1,28 +1,28 @@
 package com.mtjin.androidarchitecturestudy.ui.search
 
 import android.view.LayoutInflater
-import android.view.View
 import android.view.ViewGroup
-import android.widget.ImageView
-import android.widget.RatingBar
-import android.widget.TextView
-import androidx.core.text.HtmlCompat
+import androidx.databinding.DataBindingUtil
 import androidx.recyclerview.widget.RecyclerView
-import com.bumptech.glide.Glide
 import com.mtjin.androidarchitecturestudy.R
 import com.mtjin.androidarchitecturestudy.data.search.Movie
+import com.mtjin.androidarchitecturestudy.databinding.ItemMovieBinding
 
-class MovieAdapter :
+class MovieAdapter(private val itemClick: (Movie) -> Unit) :
     RecyclerView.Adapter<MovieAdapter.ViewHolder>() {
-    private lateinit var clickCallBack: (Movie) -> Unit
+    lateinit var binding: ItemMovieBinding
     private val items: ArrayList<Movie> = ArrayList()
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val view: View = LayoutInflater.from(parent.context)
-            .inflate(R.layout.item_movie, parent, false)
-        val viewHolder = ViewHolder(view)
-        view.setOnClickListener {
-            clickCallBack(items[viewHolder.adapterPosition])
+        binding = DataBindingUtil.inflate(
+            LayoutInflater.from(parent.context),
+            R.layout.item_movie,
+            parent,
+            false
+        )
+        val viewHolder = ViewHolder(binding)
+        binding.root.setOnClickListener {
+            itemClick(items[viewHolder.adapterPosition])
         }
 
         return viewHolder
@@ -36,38 +36,20 @@ class MovieAdapter :
         }
     }
 
-    class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
-
-        private val ivPoster = itemView.findViewById<ImageView>(R.id.iv_poster)
-        private val rvRating = itemView.findViewById<RatingBar>(R.id.rb_rating)
-        private val tvTitle = itemView.findViewById<TextView>(R.id.tv_title)
-        private val tvReleaseDate = itemView.findViewById<TextView>(R.id.tv_release_date)
-        private val tvActor = itemView.findViewById<TextView>(R.id.tv_actor)
-        private val tvDirector = itemView.findViewById<TextView>(R.id.tv_director)
+    class ViewHolder(private val binding: ItemMovieBinding) :
+        RecyclerView.ViewHolder(binding.root) {
 
         fun bind(movie: Movie) {
-            with(movie) {
-                Glide.with(itemView).load(image)
-                    .placeholder(R.drawable.ic_default)
-                    .into(ivPoster!!)
-                rvRating.rating = (userRating.toFloatOrNull() ?: 0f) / 2
-                tvTitle.text = HtmlCompat.fromHtml(title, HtmlCompat.FROM_HTML_MODE_COMPACT)
-                tvReleaseDate.text = pubDate
-                tvActor.text = actor
-                tvDirector.text = director
-            }
+            binding.movie = movie
+            binding.executePendingBindings()
         }
     }
 
-    fun setItems(items: List<Movie>) {
+    fun addItems(items: List<Movie>) {
         this.items.addAll(items)
         notifyDataSetChanged()
     }
 
-    fun setItemClickListener(clickCallBack: (Movie) -> Unit) {
-        this.clickCallBack = clickCallBack
-    }
-
     fun clear() {
         this.items.clear()
         notifyDataSetChanged()

2003/mtjin/AndroidArchitectureStudy/app/src/main/java/com/mtjin/androidarchitecturestudy/ui/search/MovieSearchActivity.kt

@@ -4,25 +4,21 @@ import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
 import android.view.View
-import android.widget.Button
-import android.widget.EditText
-import android.widget.ProgressBar
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
+import androidx.databinding.DataBindingUtil
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import com.mtjin.androidarchitecturestudy.R
 import com.mtjin.androidarchitecturestudy.data.search.Movie
+import com.mtjin.androidarchitecturestudy.databinding.ActivityMovieSearchBinding
 import com.mtjin.androidarchitecturestudy.utils.MyApplication
 
 
 class MovieSearchActivity : AppCompatActivity(), MovieSearchContract.View {
 
+    private lateinit var binding: ActivityMovieSearchBinding
     private lateinit var presenter: MovieSearchContract.Presenter
-    private lateinit var etInput: EditText
-    private lateinit var btnSearch: Button
-    private lateinit var rvMovies: RecyclerView
-    private lateinit var pbLoading: ProgressBar
     private lateinit var movieAdapter: MovieAdapter
     private lateinit var myApplication: MyApplication
     private lateinit var query: String
@@ -31,54 +27,48 @@ class MovieSearchActivity : AppCompatActivity(), MovieSearchContract.View {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_movie_search)
-
-        initView()
+        initDataBinding()
+        inject()
         initAdapter()
-        initListener()
-        presenter = MovieSearchPresenter(this, myApplication.movieRepository)
     }
 
-    private fun initView() {
+    private fun initDataBinding() {
+        binding = DataBindingUtil.setContentView(this, R.layout.activity_movie_search)
+        binding.search = this
+    }
+
+    private fun inject() {
         myApplication = application as MyApplication
-        etInput = findViewById(R.id.et_input)
-        btnSearch = findViewById(R.id.btn_search)
-        rvMovies = findViewById(R.id.rv_movies)
-        pbLoading = findViewById(R.id.pb_loading)
+        presenter = MovieSearchPresenter(this, myApplication.movieRepository)
     }
 
     private fun initAdapter() {
-        movieAdapter = MovieAdapter()
-        val linearLayoutManager = LinearLayoutManager(this)
-        rvMovies.layoutManager = linearLayoutManager
-        scrollListener = object : EndlessRecyclerViewScrollListener(linearLayoutManager) {
+        movieAdapter = MovieAdapter { movie ->
+            Intent(Intent.ACTION_VIEW, Uri.parse(movie.link)).takeIf {
+                it.resolveActivity(packageManager) != null
+            }?.run(this::startActivity)
+        }
+        scrollListener = object :
+            EndlessRecyclerViewScrollListener(binding.rvMovies.layoutManager as LinearLayoutManager) {
             override fun onLoadMore(page: Int, totalItemsCount: Int, view: RecyclerView?) {
                 presenter.requestPagingMovie(query, totalItemsCount + 1)
             }
         }
-        rvMovies.addOnScrollListener(scrollListener)
-        rvMovies.adapter = movieAdapter
+        binding.rvMovies.addOnScrollListener(scrollListener)
+        binding.rvMovies.adapter = movieAdapter
     }
 
-    private fun initListener() {
-        //어댑터 아이템 클릭리스너
-        movieAdapter.setItemClickListener { movie ->
-            Intent(Intent.ACTION_VIEW, Uri.parse(movie.link)).takeIf {
-                it.resolveActivity(packageManager) != null
-            }?.run(this::startActivity)
-        }
-        //검색버튼
-        btnSearch.setOnClickListener {
-            query = etInput.text.toString().trim()
-            presenter.requestMovie(query)
-        }
+    fun onSearchClick() {
+        query = binding.etInput.text.toString().trim()
+        presenter.requestMovie(query)
     }
 
     override fun showLoading() {
-        pbLoading.visibility = View.VISIBLE
+        binding.pbLoading.visibility = View.VISIBLE
     }
 
     override fun hideLoading() {
-        pbLoading.visibility = View.GONE
+        binding.pbLoading.visibility = View.GONE
     }
 
     override fun showToast(msg: String) {
@@ -111,12 +101,12 @@ class MovieSearchActivity : AppCompatActivity(), MovieSearchContract.View {
 
     override fun searchMovieSuccess(movieList: List<Movie>) {
         movieAdapter.clear()
-        movieAdapter.setItems(movieList)
+        movieAdapter.addItems(movieList)
         Toast.makeText(this, getString(R.string.load_movie_success_msg), Toast.LENGTH_SHORT).show()
     }
 
     override fun pagingMovieSuccess(movieList: List<Movie>) {
-        movieAdapter.setItems(movieList)
+        movieAdapter.addItems(movieList)
         Toast.makeText(this, getString(R.string.load_movie_success_msg), Toast.LENGTH_SHORT).show()
     }
 

2003/mtjin/AndroidArchitectureStudy/app/src/main/java/com/mtjin/androidarchitecturestudy/utils/DataBindingAdapters.kt

@@ -0,0 +1,37 @@
+package com.mtjin.androidarchitecturestudy.utils
+
+import android.widget.ImageView
+import android.widget.RatingBar
+import android.widget.TextView
+import androidx.core.text.HtmlCompat
+import androidx.databinding.BindingAdapter
+import com.bumptech.glide.Glide
+import com.mtjin.androidarchitecturestudy.R
+
+
+@BindingAdapter("htmlText")
+fun setHtmlText(textView: TextView, html: String) {
+    HtmlCompat.fromHtml(html, HtmlCompat.FROM_HTML_MODE_COMPACT)
+}
+
+@BindingAdapter("urlImage")
+fun setUrlImage(imageView: ImageView, url: String) {
+    Glide.with(imageView).load(url)
+        .placeholder(R.drawable.ic_default)
+        .into(imageView)
+}
+
+@BindingAdapter("movieRating")
+fun setMovieRating(ratingBar: RatingBar, score: String) {
+    ratingBar.rating = (score.toFloatOrNull() ?: 0f) / 2
+}
+
+/*
+확장함수 사용 필기용입니다.
+@BindingAdapter("app:movieRating")
+fun RatingBar.setMovieRating(score: String) {
+    rating = (score.toFloatOrNull() ?: 0f) / 2
+}
+*/
+
+