6주차 세미나 과제

app/build.gradle

@@ -52,7 +52,7 @@ dependencies {
     implementation "androidx.appcompat:appcompat:1.6.1"
 
     // material
-    implementation "com.google.android.material:material:1.8.0"
+    implementation "com.google.android.material:material:1.9.0"
 
     // constraint layout
     implementation "androidx.constraintlayout:constraintlayout:2.1.4"
@@ -107,4 +107,7 @@ dependencies {
 
     // splash screen
     implementation "androidx.core:core-splashscreen:1.0.1"
+
+    // lottie
+    implementation 'com.airbnb.android:lottie:3.7.1'
 }

app/src/main/java/org/android/go/sopt/presentation/dialog/LoadingDialogFragment.kt

@@ -0,0 +1,20 @@
+package org.android.go.sopt.presentation.dialog
+
+import android.os.Bundle
+import android.view.View
+import org.android.go.sopt.R
+import org.android.go.sopt.databinding.FragmentLoadingDialogBinding
+import org.android.go.sopt.util.binding.BindingDialogFragment
+
+class LoadingDialogFragment :
+    BindingDialogFragment<FragmentLoadingDialogBinding>(R.layout.fragment_loading_dialog) {
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        initDialogCancelable()
+    }
+
+    private fun initDialogCancelable() {
+        dialog?.setCancelable(false)
+    }
+}

app/src/main/java/org/android/go/sopt/presentation/login/LoginActivity.kt

@@ -8,6 +8,7 @@ import androidx.activity.viewModels
 import dagger.hilt.android.AndroidEntryPoint
 import org.android.go.sopt.R
 import org.android.go.sopt.databinding.ActivityLoginBinding
+import org.android.go.sopt.presentation.dialog.LoadingDialogFragment
 import org.android.go.sopt.presentation.main.MainActivity
 import org.android.go.sopt.presentation.signup.SignupActivity
 import org.android.go.sopt.util.binding.BindingActivity
@@ -16,12 +17,15 @@ import org.android.go.sopt.util.extension.showSnackbar
 import org.android.go.sopt.util.extension.showToast
 import org.android.go.sopt.util.state.RemoteUiState.Error
 import org.android.go.sopt.util.state.RemoteUiState.Failure
+import org.android.go.sopt.util.state.RemoteUiState.Loading
 import org.android.go.sopt.util.state.RemoteUiState.Success
 
 @AndroidEntryPoint
 class LoginActivity : BindingActivity<ActivityLoginBinding>(R.layout.activity_login) {
     private val viewModel by viewModels<LoginViewModel>()
 
+    private val loadingDialog by lazy { LoadingDialogFragment() }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         binding.vm = viewModel
@@ -46,18 +50,41 @@ class LoginActivity : BindingActivity<ActivityLoginBinding>(R.layout.activity_lo
     private fun setupLoginState() {
         viewModel.loginState.observe(this) { state ->
             when (state) {
-                is Success -> navigateToMainScreen()
-                is Failure -> showSnackbar(binding.root, getString(R.string.wrong_input_msg))
-                is Error -> showSnackbar(binding.root, getString(R.string.unknown_error_msg))
+                is Loading -> {
+                    loadingDialog.show(supportFragmentManager, TAG_LOADING_DIALOG)
+                }
+
+                is Success -> {
+                    dismissLoadingDialog()
+                    navigateToMainScreen()
+                }
+
+                is Failure -> {
+                    dismissLoadingDialog()
+                    showSnackbar(binding.root, getString(R.string.wrong_input_msg))
+                }
+
+                is Error -> {
+                    dismissLoadingDialog()
+                    showSnackbar(binding.root, getString(R.string.unknown_error_msg))
+                }
             }
         }
     }
 
+    private fun dismissLoadingDialog() {
+        if (loadingDialog.isAdded) loadingDialog.dismiss()
+    }
+
     private fun navigateToMainScreen() {
         showToast(getString(R.string.login_login_success_msg))
         Intent(this, MainActivity::class.java).apply {
             flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
             startActivity(this)
         }
     }
+
+    companion object {
+        const val TAG_LOADING_DIALOG = "LOADING_DIALOG"
+    }
 }

app/src/main/java/org/android/go/sopt/presentation/login/LoginViewModel.kt

@@ -12,6 +12,7 @@ import org.android.go.sopt.domain.repository.AuthRepository
 import org.android.go.sopt.util.state.RemoteUiState
 import org.android.go.sopt.util.state.RemoteUiState.Error
 import org.android.go.sopt.util.state.RemoteUiState.Failure
+import org.android.go.sopt.util.state.RemoteUiState.Loading
 import org.android.go.sopt.util.state.RemoteUiState.Success
 import retrofit2.HttpException
 import timber.log.Timber
@@ -43,19 +44,19 @@ class LoginViewModel @Inject constructor(
         }
     }
 
-    private fun isValidInput() = id.isNotBlank() && pwd.isNotBlank()
-
     fun login() {
-        if (!isValidInput()) {
-            _loginState.value = Failure(null)
-            return
-        }
-
-        val requestPostSignInDto = RequestPostSignInDto(
-            id = id,
-            password = pwd,
-        )
         viewModelScope.launch {
+            _loginState.value = Loading
+
+            if (!isValidInput()) {
+                _loginState.value = Failure(CODE_INVALID_INPUT)
+                return@launch
+            }
+
+            val requestPostSignInDto = RequestPostSignInDto(
+                id = id,
+                password = pwd,
+            )
             authRepository.postSignin(requestPostSignInDto)
                 .onSuccess { response ->
                     authRepository.setSignedUpUser(
@@ -82,6 +83,8 @@ class LoginViewModel @Inject constructor(
         }
     }
 
+    private fun isValidInput() = id.isNotBlank() && pwd.isNotBlank()
+
     companion object {
         const val CODE_INVALID_INPUT = 400
     }

app/src/main/java/org/android/go/sopt/presentation/main/follower/FollowerFragment.kt

@@ -8,38 +8,52 @@ import androidx.recyclerview.widget.GridLayoutManager.SpanSizeLookup
 import dagger.hilt.android.AndroidEntryPoint
 import org.android.go.sopt.R
 import org.android.go.sopt.databinding.FragmentFollowerBinding
+import org.android.go.sopt.presentation.dialog.LoadingDialogFragment
+import org.android.go.sopt.presentation.login.LoginActivity.Companion.TAG_LOADING_DIALOG
 import org.android.go.sopt.presentation.main.follower.FollowerAdapter.Companion.VIEW_TYPE_HEADER
 import org.android.go.sopt.util.binding.BindingFragment
 import org.android.go.sopt.util.extension.showSnackbar
 import org.android.go.sopt.util.state.RemoteUiState.Error
 import org.android.go.sopt.util.state.RemoteUiState.Failure
+import org.android.go.sopt.util.state.RemoteUiState.Loading
 import org.android.go.sopt.util.state.RemoteUiState.Success
 
 @AndroidEntryPoint
 class FollowerFragment : BindingFragment<FragmentFollowerBinding>(R.layout.fragment_follower) {
     private val viewModel by viewModels<FollowerViewModel>()
 
-    private var followerAdapter: FollowerAdapter? = null
+    private var _followerAdapter: FollowerAdapter? = null
+    private val followerAdapter
+        get() = requireNotNull(_followerAdapter) { getString(R.string.adapter_not_initialized_error_msg) }
+
+    private var _loadingDialog: LoadingDialogFragment? = null
+    private val loadingDialog
+        get() = requireNotNull(_loadingDialog) { getString(R.string.dialog_not_initialized_error_msg) }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         binding.vm = viewModel
 
         initFollowerAdapter()
+        initLoadingDialogFragment()
         initRecyclerViewLayoutManager()
         setupGetFollowerListState()
     }
 
     private fun initFollowerAdapter() {
-        followerAdapter = FollowerAdapter()
+        _followerAdapter = FollowerAdapter()
         binding.rvFollower.adapter = followerAdapter
     }
 
+    private fun initLoadingDialogFragment() {
+        _loadingDialog = LoadingDialogFragment()
+    }
+
     private fun initRecyclerViewLayoutManager() {
         val layoutManager = GridLayoutManager(activity, 2)
         layoutManager.spanSizeLookup = object : SpanSizeLookup() {
             override fun getSpanSize(position: Int): Int {
-                return when (followerAdapter?.getItemViewType(position)) {
+                return when (followerAdapter.getItemViewType(position)) {
                     VIEW_TYPE_HEADER -> 2
                     else -> 1
                 }
@@ -51,16 +65,42 @@ class FollowerFragment : BindingFragment<FragmentFollowerBinding>(R.layout.fragm
     private fun setupGetFollowerListState() {
         viewModel.getFollowerListState.observe(viewLifecycleOwner) { state ->
             when (state) {
-                is Success -> followerAdapter?.submitList(viewModel.followerList)
-                is Failure -> requireContext().showSnackbar(binding.root, getString(R.string.follower_get_follower_list_null_msg))
-                is Error -> requireContext().showSnackbar(binding.root, getString(R.string.unknown_error_msg))
+                is Loading -> {
+                    loadingDialog.show(parentFragmentManager, TAG_LOADING_DIALOG)
+                }
+
+                is Success -> {
+                    dismissLoadingDialog()
+                    followerAdapter.submitList(viewModel.followerList)
+                }
+
+                is Failure -> {
+                    dismissLoadingDialog()
+                    requireContext().showSnackbar(
+                        binding.root,
+                        getString(R.string.follower_get_follower_list_null_msg),
+                    )
+                }
+
+                is Error -> {
+                    dismissLoadingDialog()
+                    requireContext().showSnackbar(
+                        binding.root,
+                        getString(R.string.unknown_error_msg),
+                    )
+                }
             }
         }
     }
 
+    private fun dismissLoadingDialog() {
+        if (loadingDialog.isAdded) loadingDialog.dismiss()
+    }
+
     override fun onDestroyView() {
         super.onDestroyView()
-        followerAdapter = null
+        _followerAdapter = null
+        _loadingDialog = null
     }
 
     companion object {

app/src/main/java/org/android/go/sopt/presentation/main/follower/FollowerViewModel.kt

@@ -11,6 +11,7 @@ import org.android.go.sopt.domain.repository.FollowerRepository
 import org.android.go.sopt.util.state.RemoteUiState
 import org.android.go.sopt.util.state.RemoteUiState.Error
 import org.android.go.sopt.util.state.RemoteUiState.Failure
+import org.android.go.sopt.util.state.RemoteUiState.Loading
 import org.android.go.sopt.util.state.RemoteUiState.Success
 import retrofit2.HttpException
 import timber.log.Timber
@@ -33,8 +34,9 @@ class FollowerViewModel @Inject constructor(
     }
 
     private fun getFollowerList() {
-        Timber.d("get follower list 시작")
         viewModelScope.launch {
+            _getFollowerListState.value = Loading
+            // TODO: 팔로워 페이징 구현
             followerRepository.getFollowerList(1)
                 .onSuccess { response ->
                     if (response.isEmpty()) {

app/src/main/java/org/android/go/sopt/presentation/main/gallery/GalleryFragment.kt

@@ -6,9 +6,10 @@ import org.android.go.sopt.R
 import org.android.go.sopt.databinding.FragmentGalleryBinding
 import org.android.go.sopt.util.binding.BindingFragment
 
-
 class GalleryFragment : BindingFragment<FragmentGalleryBinding>(R.layout.fragment_gallery) {
-    private var imageAdapter: ImageAdapter? = null
+    private var _imageAdapter: ImageAdapter? = null
+    private val imageAdapter
+        get() = requireNotNull(_imageAdapter) { getString(R.string.adapter_not_initialized_error_msg) }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -17,9 +18,9 @@ class GalleryFragment : BindingFragment<FragmentGalleryBinding>(R.layout.fragmen
     }
 
     private fun initImageAdapter() {
-        imageAdapter = ImageAdapter()
+        _imageAdapter = ImageAdapter()
         binding.vpGallery.adapter = imageAdapter
-        imageAdapter?.submitList(
+        imageAdapter.submitList(
             listOf(
                 R.drawable.img_main_profile,
                 R.drawable.img_main_profile,
@@ -30,7 +31,7 @@ class GalleryFragment : BindingFragment<FragmentGalleryBinding>(R.layout.fragmen
 
     override fun onDestroyView() {
         super.onDestroyView()
-        imageAdapter = null
+        _imageAdapter = null
     }
 
     companion object {

app/src/main/java/org/android/go/sopt/presentation/main/gallery/ImageAdapter.kt

@@ -2,7 +2,6 @@ package org.android.go.sopt.presentation.main.gallery
 
 import android.view.LayoutInflater
 import android.view.ViewGroup
-import androidx.annotation.DrawableRes
 import androidx.recyclerview.widget.ListAdapter
 import androidx.recyclerview.widget.RecyclerView
 import org.android.go.sopt.databinding.ItemGalleryImageBinding
@@ -20,16 +19,10 @@ class ImageAdapter : ListAdapter<Int, RecyclerView.ViewHolder>(diffUtil) {
         )
     }
 
-    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
-        if (holder is ImageViewHolder) holder.setImage(getItem(position))
-    }
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {}
 
     class ImageViewHolder(private val binding: ItemGalleryImageBinding) :
-        RecyclerView.ViewHolder(binding.root) {
-        fun setImage(@DrawableRes index: Int) {
-            // TODO : 이미지 연결
-        }
-    }
+        RecyclerView.ViewHolder(binding.root)
 
     companion object {
         private val diffUtil = DiffCallback<Int>(