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Implemented MVVM architecture to the application
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| package com.example.app | ||
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| import android.util.Log | ||
| import androidx.lifecycle.ViewModel | ||
| import androidx.lifecycle.viewModelScope | ||
| import com.google.gson.Gson | ||
| import kotlinx.coroutines.Dispatchers | ||
| import kotlinx.coroutines.launch | ||
| import kotlinx.coroutines.withContext | ||
| import okhttp3.OkHttpClient | ||
| import okhttp3.Request | ||
| import java.io.IOException | ||
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| class CatViewModel: ViewModel() { | ||
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| var URL: String ="" | ||
| // Function to make an asynchronous HTTP request | ||
| private suspend fun httpReq(apiKey: String, url: String): String = withContext(Dispatchers.IO) { | ||
| val client = OkHttpClient() | ||
| val request = Request.Builder().url(url).build() | ||
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| return@withContext try { | ||
| // Execute the HTTP request synchronously and get the response | ||
| client.newCall(request).execute().use { response -> | ||
| if (response.isSuccessful) { | ||
| // Return the response body as a string | ||
| response.body!!.string() | ||
| } else { // Throw an exception for unexpected HTTP codes | ||
| throw IOException("Unexpected HTTP code: ${response.code}") | ||
| } | ||
| } | ||
| } catch (e: IOException) { | ||
| // Throw an exception for errors during the HTTP request | ||
| throw IOException("Error during HTTP request", e) | ||
| } | ||
| } | ||
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| // Function to parse JSON response for cat image | ||
| private fun jsonParserCat(responseString: String): String { | ||
| val gson = Gson() | ||
| val catDataArray = gson.fromJson(responseString, Array<CatData>::class.java) | ||
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| // Check if the array is not null and not empty | ||
| if (catDataArray != null && catDataArray.isNotEmpty()) { | ||
| // Assuming you want the first element of the array | ||
| val imageUrl = catDataArray[0].url | ||
| Log.d("LOG", imageUrl) | ||
| return imageUrl | ||
| } else { | ||
| // Handle the case when the array is null or empty | ||
| return "" | ||
| } | ||
| } | ||
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| // Function to parse JSON response for dog image | ||
| private fun jsonParserDog(responseString: String): String { | ||
| val gson = Gson() | ||
| val dogData = gson.fromJson(responseString, DogData::class.java) | ||
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| // Return the dog image URL | ||
| return dogData.message | ||
| } | ||
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| fun dogButtonClick( | ||
| onSuccess: (String) -> Unit, | ||
| onError: (String) -> Unit) { | ||
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| viewModelScope.launch { | ||
| try { | ||
| // Make an asynchronous HTTP request for dog image | ||
| val response = httpReq("", "https://dog.ceo/api/breeds/image/random") | ||
| val imageUrl = jsonParserDog(response) | ||
| Log.d("LOG!", imageUrl) | ||
| URL = imageUrl | ||
| onSuccess(imageUrl) | ||
| } catch (e: Exception) { | ||
| // Handle exceptions, e.g., network errors | ||
| Log.e("LOG!", "Error fetching data", e) | ||
| onError("Error fetching data") | ||
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| } | ||
| } | ||
| } | ||
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| fun catButtonHandler( | ||
| onSuccess: (String) -> Unit, | ||
| onError: (String) -> Unit){ | ||
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| viewModelScope.launch { | ||
| try { | ||
| // Make an asynchronous HTTP request for cat image | ||
| val response = httpReq("null", "https://api.thecatapi.com/v1/images/search") | ||
| Log.d("LOG!", response) | ||
| // Parse the JSON response to get the image URL | ||
| val imageUrl = jsonParserCat(response) | ||
| Log.d("LOG!", imageUrl) | ||
| URL = imageUrl | ||
| onSuccess(imageUrl) | ||
| } catch (e: Exception) { | ||
| // Handle exceptions, e.g., network errors | ||
| Log.e("LOG!", "Error fetching data", e) | ||
| onError("Error fetching data") | ||
| } | ||
| } | ||
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| } | ||
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| } |
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