Merge pull request #233 from myofficework000/lesson_19

added lesson 19
myofficework000 · Jan 26, 2024 · 5d25594 · 5d25594
2 parents 036bde8 + 3fec622
commit 5d25594
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diff --git a/app/src/main/java/com/example/jetpack_compose_all_in_one/lessons/lesson_19/DogApiService.kt b/app/src/main/java/com/example/jetpack_compose_all_in_one/lessons/lesson_19/DogApiService.kt
@@ -0,0 +1,8 @@
+package com.example.jetpack_compose_all_in_one.lessons.lesson_19
+
+import retrofit2.http.GET
+
+interface DogApiService {
+    @GET("api/breeds/image/random")
+    suspend fun getDogImage(): DogResponse
+}
diff --git a/app/src/main/java/com/example/jetpack_compose_all_in_one/lessons/lesson_19/DogImageScreen.kt b/app/src/main/java/com/example/jetpack_compose_all_in_one/lessons/lesson_19/DogImageScreen.kt
@@ -0,0 +1,43 @@
+package com.example.jetpack_compose_all_in_one.lessons.lesson_19
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.material3.Button
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import coil.compose.rememberImagePainter
+
+@Composable
+fun DogImageScreen(viewModel: DogViewModel = hiltViewModel()) {
+    val dogUrl by viewModel.dogImage.observeAsState()
+
+    Column(
+        modifier = Modifier.fillMaxSize(),
+        verticalArrangement = Arrangement.Center,
+        horizontalAlignment = androidx.compose.ui.Alignment.CenterHorizontally
+    ) {
+        dogUrl?.let { url ->
+            Image(
+                modifier = Modifier.height(300.dp).fillMaxWidth(),
+                painter = rememberImagePainter(data = dogUrl),
+                contentDescription = "Dog Image"
+            )
+        }
+
+        Spacer(modifier = Modifier.height(16.dp))
+
+        Button(onClick = { viewModel.getRandomDogImage() }) {
+            Text("Fetch Dog Image")
+        }
+    }
+}
diff --git a/app/src/main/java/com/example/jetpack_compose_all_in_one/lessons/lesson_19/DogResponse.kt b/app/src/main/java/com/example/jetpack_compose_all_in_one/lessons/lesson_19/DogResponse.kt
@@ -0,0 +1,3 @@
+package com.example.jetpack_compose_all_in_one.lessons.lesson_19
+
+data class DogResponse(val message: String, val status: String)
diff --git a/app/src/main/java/com/example/jetpack_compose_all_in_one/lessons/lesson_19/DogViewModel.kt b/app/src/main/java/com/example/jetpack_compose_all_in_one/lessons/lesson_19/DogViewModel.kt
@@ -0,0 +1,35 @@
+package com.example.jetpack_compose_all_in_one.lessons.lesson_19
+
+import android.util.Log
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.liveData
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+@HiltViewModel
+class DogViewModel @Inject constructor(private val dogApiService: DogApiService) : ViewModel() {
+
+    val dogImage = MutableLiveData<String>()
+
+    init {
+        getRandomDogImage()
+    }
+
+    fun getRandomDogImage() {
+        viewModelScope.launch {
+            try {
+                val response = dogApiService.getDogImage()
+                if (response.status == "success") {
+                    dogImage.value = response.message
+                } else {
+                    Log.d("TAG", "getRandomDogImage: ${response.status}")
+                }
+            } catch (e: Exception) {
+                e.stackTrace
+            }
+        }
+    }
+}
diff --git a/app/src/main/java/com/example/jetpack_compose_all_in_one/lessons/lesson_19/NetworkModule.kt b/app/src/main/java/com/example/jetpack_compose_all_in_one/lessons/lesson_19/NetworkModule.kt
@@ -0,0 +1,48 @@
+package com.example.jetpack_compose_all_in_one.lessons.lesson_19
+
+import android.content.Context
+import android.net.ConnectivityManager
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.qualifiers.ApplicationContext
+import dagger.hilt.components.SingletonComponent
+import okhttp3.Cache
+import okhttp3.OkHttpClient
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+object NetworkModule {
+
+    @Provides
+    @Singleton
+    fun provideDogApiService(@ApplicationContext context: Context): DogApiService {
+        val cacheSize = (10 * 1024 * 1024).toLong()
+        val myCache = Cache(context.cacheDir, cacheSize)
+        val okHttpClient = OkHttpClient.Builder()
+            .cache(myCache)
+            .addInterceptor { chain ->
+                val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+                val activeNetwork = connectivityManager.activeNetworkInfo
+                val isNetworkAvailable = activeNetwork != null && activeNetwork.isConnected
+                var request = chain.request()
+                request = if (isNetworkAvailable) {
+                    request.newBuilder().header("Cache-Control", "public, max-age=" + 5).build()
+                } else {
+                    request.newBuilder().header("Cache-Control", "public, only-if-cached, max-stale=" + 60 * 60 * 24 * 7).build()
+                }
+                chain.proceed(request)
+            }
+            .build()
+
+        return Retrofit.Builder()
+            .baseUrl("https://dog.ceo/")
+            .client(okHttpClient)
+            .addConverterFactory(GsonConverterFactory.create())
+            .build()
+            .create(DogApiService::class.java)
+    }
+}
diff --git a/app/src/main/java/com/example/jetpack_compose_all_in_one/ui/components/MainContainerOfApp.kt b/app/src/main/java/com/example/jetpack_compose_all_in_one/ui/components/MainContainerOfApp.kt
@@ -78,6 +78,7 @@ import com.example.jetpack_compose_all_in_one.lessons.lesson_15.Lesson_15
 import com.example.jetpack_compose_all_in_one.lessons.lesson_16.Lesson_16
 import com.example.jetpack_compose_all_in_one.lessons.lesson_17.Lesson_17
 import com.example.jetpack_compose_all_in_one.lessons.lesson_18.Lesson_18
+import com.example.jetpack_compose_all_in_one.lessons.lesson_19.DogImageScreen
 import com.example.jetpack_compose_all_in_one.lessons.lesson_2.Lesson_2_Chapter_2_Screen
 import com.example.jetpack_compose_all_in_one.lessons.lesson_2.Lesson_2_Chapter_4_Image
 import com.example.jetpack_compose_all_in_one.lessons.lesson_2.Lesson_2_Chapter_5_Progressbar
@@ -434,6 +435,10 @@ fun MainContainerOfApp(
                     Lesson_18()
                 }
 
+                composable(NavDes.Lesson19.route()){
+                    DogImageScreen()
+                }
+
                 composable(NavDes.L6Chapter1.route()) {
                     Lesson_6_ThemeChange()
                 }

diff --git a/app/src/main/java/com/example/jetpack_compose_all_in_one/utils/navigation/NavConstants.kt b/app/src/main/java/com/example/jetpack_compose_all_in_one/utils/navigation/NavConstants.kt
@@ -140,6 +140,9 @@ object NavConstants {
     const val LESSON_18 = "LESSON_18"
     const val LESSON_18_ABOUT = "Lesson 18: Compose UI Testing"
 
+    const val LESSON_19 = "LESSON_19"
+    const val LESSON_19_ABOUT = "Lesson 19: Caching with OkHttp Interceptor"
+
     const val QUOTE_2 = "quote2"
     const val QUOTE_2_ABOUT = "Swipe Quotes"
 

diff --git a/app/src/main/java/com/example/jetpack_compose_all_in_one/utils/navigation/NavDes.kt b/app/src/main/java/com/example/jetpack_compose_all_in_one/utils/navigation/NavDes.kt
@@ -83,6 +83,8 @@ import com.example.jetpack_compose_all_in_one.utils.navigation.NavConstants.LESS
 import com.example.jetpack_compose_all_in_one.utils.navigation.NavConstants.LESSON_17_ABOUT
 import com.example.jetpack_compose_all_in_one.utils.navigation.NavConstants.LESSON_18
 import com.example.jetpack_compose_all_in_one.utils.navigation.NavConstants.LESSON_18_ABOUT
+import com.example.jetpack_compose_all_in_one.utils.navigation.NavConstants.LESSON_19
+import com.example.jetpack_compose_all_in_one.utils.navigation.NavConstants.LESSON_19_ABOUT
 import com.example.jetpack_compose_all_in_one.utils.navigation.NavConstants.LESSON_1_ABOUT
 import com.example.jetpack_compose_all_in_one.utils.navigation.NavConstants.LESSON_2_CHAPTER_1
 import com.example.jetpack_compose_all_in_one.utils.navigation.NavConstants.LESSON_2_CHAPTER_1_ABOUT
@@ -303,6 +305,9 @@ sealed class NavDes(val data: INavigationDrawerItem, val customAppBarStringId: I
     object Lesson18 :
         NavDes(NavigationDrawerData(LESSON_18, LESSON_18_ABOUT))
 
+    object Lesson19 :
+        NavDes(NavigationDrawerData(LESSON_19, LESSON_19_ABOUT))
+
     object Lesson14DropDownMenu :
         NavDes(NavigationDrawerData(LESSON_14_DROP_DOWN_MENU, LESSON_14_DROP_DOWN_MENU_ABOUT))
 
@@ -512,7 +517,8 @@ sealed class NavDes(val data: INavigationDrawerItem, val customAppBarStringId: I
                 Lesson15,
                 Lesson16,
                 Lesson17,
-                Lesson18
+                Lesson18,
+                Lesson19
             ), LESSONS
         )
     )