shoppingCartMVVM

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdk 32
+
+    dataBinding {
+        enabled=true
+    }
+    viewBinding{
+        enabled=true
+    }
+
+    defaultConfig {
+        applicationId "com.example.shoppingcart"
+        minSdk 23
+        targetSdk 32
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.5.1'
+    implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+
+//    recyclerview
+    implementation "androidx.recyclerview:recyclerview:1.2.1"
+    //mvvm
+    // ViewModel
+    implementation "androidx.lifecycle:lifecycle-viewmodel:2.5.1" // LiveData
+    implementation "androidx.lifecycle:lifecycle-livedata:2.5.1"
+
+//    navigation
+    // Java language implementation
+    implementation "androidx.navigation:navigation-fragment:2.5.2"
+    implementation "androidx.navigation:navigation-ui:2.5.2"
+
+//    glide for imageview
+    implementation 'com.github.bumptech.glide:glide:4.14.1'
+    annotationProcessor 'com.github.bumptech.glide:compiler:4.14.1'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/example/shoppingcart/ExampleInstrumentedTest.java

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+package com.example.shoppingcart;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.shoppingcart", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.example.shoppingcart">
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.ShoppingCart"
+        tools:targetApi="31">
+        <activity
+            android:name=".views.MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/example/shoppingcart/adapters/CartListAdapter.java

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+package com.example.shoppingcart.adapters;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.ListAdapter;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.shoppingcart.databinding.CartRowBinding;
+import com.example.shoppingcart.models.CartItem;
+
+import java.util.List;
+
+public class CartListAdapter extends ListAdapter<CartItem, CartListAdapter.CartViewHolder>  {
+
+    CartInterface cartInterface;
+
+    public CartListAdapter(CartInterface cartInterface) {
+        super(CartItem.itemCallback);
+        this.cartInterface = cartInterface;
+    }
+
+    @NonNull
+    @Override
+    public CartViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
+        CartRowBinding cartRowBinding = CartRowBinding.inflate(inflater,parent,false);
+        return new CartViewHolder(cartRowBinding);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull CartViewHolder holder, int position) {
+        holder.cartRowBinding.setCartItem(getItem(position));
+
+        //if binding are pendings
+        holder.cartRowBinding.executePendingBindings();
+    }
+
+    class CartViewHolder extends RecyclerView.ViewHolder{
+
+        CartRowBinding cartRowBinding;
+
+        public CartViewHolder(@NonNull CartRowBinding cartRowBinding) {
+            super(cartRowBinding.getRoot());
+            this.cartRowBinding= cartRowBinding;
+
+            cartRowBinding.deleteCartIV.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    cartRowBinding.spinner.setSelection((getItem(getAdapterPosition()).getQuantity())-1);
+                    cartInterface.deleteItem(getItem(getAdapterPosition()));
+                    notifyDataSetChanged();
+                }
+            });
+
+            //quanity of spinner
+            cartRowBinding.spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+                @Override
+                public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+                    int quantity = position + 1;
+                    if(quantity == getItem(getAdapterPosition()).getQuantity()){
+                        return;
+                    }
+                    cartInterface.changeQuantity(getItem(getAdapterPosition()), quantity);
+                }
+
+                @Override
+                public void onNothingSelected(AdapterView<?> parent) {
+
+                }
+            });
+        }
+    }
+
+    public interface CartInterface{
+
+        void deleteItem(CartItem cartItem);
+        void changeQuantity(CartItem cartItem,int quantity);
+    }
+}

app/src/main/java/com/example/shoppingcart/adapters/ShopListAdapter.java

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+package com.example.shoppingcart.adapters;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.AsyncDifferConfig;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.ListAdapter;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.shoppingcart.databinding.ShopRowBinding;
+import com.example.shoppingcart.models.Product;
+
+public class ShopListAdapter extends ListAdapter<Product, ShopListAdapter.ShopViewHolder> {
+
+    ShopInterface shopInterface;
+
+    public ShopListAdapter(ShopInterface shopInterface) {
+        super(Product.itemCallback);
+        this.shopInterface = shopInterface;
+    }
+
+    @NonNull
+    @Override
+    public ShopViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
+        ShopRowBinding shopRowBinding = ShopRowBinding.inflate(layoutInflater,parent,false);
+        shopRowBinding.setShopInterface(shopInterface);
+        return new ShopViewHolder(shopRowBinding);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ShopViewHolder holder, int position) {
+        Product product = getItem(position);
+        holder.shopRowBinding.setProduct(product);
+    }
+
+    class ShopViewHolder extends RecyclerView.ViewHolder{
+
+        ShopRowBinding shopRowBinding;
+
+        public ShopViewHolder(ShopRowBinding binding) {
+            super(binding.getRoot());
+            this.shopRowBinding = binding;
+
+            /* differently way by adding variable in show_row and added onclick in LinearLayout*/
+//            this.shopRowBinding.getRoot().setOnClickListener(new View.OnClickListener() {
+//                @Override
+//                public void onClick(View v) {
+//
+//                }
+//            });
+        }
+    }
+
+    public interface ShopInterface{
+        void addItem(Product product);
+        void onItemClick(Product product);
+    }
+}