Merge pull request #18 from hmalik144/homescreen_widget_creation

Homescreen widget creation

android/app/build.gradle

@@ -47,7 +47,7 @@ android {
         applicationId "com.appttude.h_mal.easycc"
         // You can update the following values to match your application needs.
         // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
-        minSdkVersion flutter.minSdkVersion
+        minSdkVersion localProperties.getProperty('flutter.minSdkVersion').toInteger()
         targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
@@ -68,4 +68,5 @@ flutter {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'androidx.cardview:cardview:1.0.0'
 }

android/app/src/main/AndroidManifest.xml

@@ -25,8 +25,33 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+       <activity android:name="com.appttude.h_mal.easycc.CurrencyAppWidgetConfigureActivity"
+           android:exported="true">
+           <intent-filter>
+               <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
+           </intent-filter>
+       </activity>
+
+
        <!-- Don't delete the meta-data below.
             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+
+       <!--  Home Widget  -->
+       <receiver android:name="AppWidgetProvider" android:exported="true">
+           <intent-filter>
+               <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+           </intent-filter>
+           <meta-data android:name="android.appwidget.provider"
+               android:resource="@xml/currency_app_widget_info" />
+       </receiver>
+       <receiver android:name="es.antonborri.home_widget.HomeWidgetBackgroundReceiver" android:exported="true">
+           <intent-filter>
+               <action android:name="es.antonborri.home_widget.action.BACKGROUND" />
+           </intent-filter>
+       </receiver>
+       <service android:name="es.antonborri.home_widget.HomeWidgetBackgroundService"
+           android:permission="android.permission.BIND_JOB_SERVICE" android:exported="true"/>
+       <!--  Home Widget  -->
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />

android/app/src/main/kotlin/com/appttude/h_mal/easycc/AppWidgetProvider.kt

@@ -0,0 +1,88 @@
+package com.appttude.h_mal.easycc
+
+import android.appwidget.AppWidgetManager
+import android.content.ComponentName
+import android.content.Context
+import android.content.Intent
+import android.content.SharedPreferences
+import android.net.Uri
+import android.widget.RemoteViews
+import android.widget.Toast
+import es.antonborri.home_widget.HomeWidgetBackgroundIntent
+import es.antonborri.home_widget.HomeWidgetLaunchIntent
+import es.antonborri.home_widget.HomeWidgetPlugin
+import es.antonborri.home_widget.HomeWidgetProvider
+
+
+class AppWidgetProvider : HomeWidgetProvider(){
+    override fun onUpdate(
+        context: Context,
+        appWidgetManager: AppWidgetManager,
+        appWidgetIds: IntArray,
+        widgetData: SharedPreferences
+    ) {
+        appWidgetIds.forEach { widgetId ->
+            val views = RemoteViews(context.packageName, R.layout.currency_app_widget).apply {
+                // Data from background operation received
+                val from: String? = widgetData.getString("${widgetId}_from", null)
+                val to: String? = widgetData.getString("${widgetId}_to", null)
+                val rate: String? = widgetData.getString("${widgetId}_rate", null)
+
+                if (from.isNullOrBlank() or to.isNullOrBlank() or rate.isNullOrBlank()) {
+                    Toast.makeText(context, "Unable to review data for widget", Toast.LENGTH_SHORT).show()
+                    return@apply
+                }
+
+                val titleString = "${from}${to}"
+                setTextViewText(R.id.exchangeName, titleString)
+                setTextViewText(R.id.exchangeRate, rate.toString())
+
+                val uri = Uri.parse("myAppWidget://updatewidget").buildUpon()
+                    .appendQueryParameter("id", widgetId.toString())
+                    .build()
+
+                setImageViewResource(R.id.refresh_icon, R.drawable.ic_refresh_white_24dp)
+                val backgroundIntent = HomeWidgetBackgroundIntent.getBroadcast(context, uri)
+                setOnClickPendingIntent(R.id.refresh_icon, backgroundIntent)
+
+                val pendingIntent = HomeWidgetLaunchIntent.getActivity(context,
+                    MainActivity::class.java)
+
+                setOnClickPendingIntent(R.id.widget_view, pendingIntent)
+            }
+            appWidgetManager.updateAppWidget(widgetId, views)
+        }
+    }
+
+    override fun onReceive(context: Context?, intent: Intent?) {
+        super.onReceive(context, intent)
+
+        when (intent?.action) {
+
+        }
+        val appWidgetManager = AppWidgetManager.getInstance(context);
+        val appWidgetIds = appWidgetManager.getAppWidgetIds(
+            context?.let { ComponentName(it, this::class.java) })
+        val widgetDate = context?.let { HomeWidgetPlugin.getData(it) }
+
+        appWidgetIds.forEach { widgetId ->
+
+
+        }
+    }
+
+    override fun onDeleted(context: Context?, appWidgetIds: IntArray?) {
+        super.onDeleted(context, appWidgetIds)
+
+        appWidgetIds?.forEach { widgetId ->
+            val uri = Uri.parse("myAppWidget://deletewidget")
+            uri.buildUpon().appendQueryParameter("id", widgetId.toString()).build()
+
+            context?.let {
+                HomeWidgetBackgroundIntent
+                    .getBroadcast(it, uri)
+                    .send()
+            }
+        }
+    }
+}

android/app/src/main/kotlin/com/appttude/h_mal/easycc/CurrencyAppWidgetConfigureActivity.kt

@@ -0,0 +1,119 @@
+package com.appttude.h_mal.easycc
+
+import android.app.Activity
+import android.appwidget.AppWidgetManager
+import android.net.Uri
+import android.os.Bundle
+import android.view.View
+import android.widget.TextView
+import android.widget.Toast
+import es.antonborri.home_widget.HomeWidgetBackgroundIntent
+
+/**
+ * The configuration screen for the [CurrencyAppWidgetKotlin] AppWidget.
+ */
+class CurrencyAppWidgetConfigureActivity : Activity(),
+    View.OnClickListener {
+
+    private var mAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID
+
+    private var top: String? = null
+    private var bottom: String? = null
+
+    public override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.currency_app_widget_configure)
+
+        // Set the result to CANCELED.  This will cause the widget host to cancel
+        // out of the widget placement if the user presses the back button.
+        setResult(RESULT_CANCELED)
+
+        // Find the widget id from the intent.
+        val extras = intent.extras
+        if (extras != null) {
+            mAppWidgetId = extras.getInt(
+                AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID
+            )
+        }
+
+        // If this activity was started with an intent without an app widget ID, finish with an error.
+        if (mAppWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
+            finish()
+            return
+        }
+        setupClickListener()
+    }
+
+    private fun setupClickListener() {
+        findViewById<TextView>(R.id.submitWidget).setOnClickListener(this)
+        findViewById<TextView>(R.id.currencyOne).setOnClickListener(this)
+        findViewById<TextView>(R.id.currencyTwo).setOnClickListener(this)
+    }
+
+    override fun onClick(view: View?) {
+        when (view?.tag.toString()) {
+            "top", "bottom" -> showCustomDialog(view)
+            "submit" -> displaySubmitDialog()
+        }
+    }
+
+    private fun displaySubmitDialog() {
+        if (top == null || bottom == null) {
+            Toast.makeText(this, "Selections incomplete", Toast.LENGTH_SHORT).show()
+            return
+        }
+        if (top == bottom) {
+            Toast.makeText(this, "Selected rates cannot be the same", Toast.LENGTH_SHORT).show()
+            return
+        }
+
+        WidgetSubmitDialog(this, getSubmitDialogMessage(), object : DialogSubmit {
+            override fun onSubmit() {
+                sendUpdateIntent(top!!, bottom!!)
+                finishCurrencyWidgetActivity()
+            }
+        }).show()
+    }
+
+
+    private fun showCustomDialog(view: View?) {
+        CustomDialogClass(this) {
+            (view as TextView).text = it
+            when (view.tag.toString()) {
+                "top" -> top = it
+                "bottom" -> bottom = it
+            }
+        }.show()
+    }
+
+    fun finishCurrencyWidgetActivity() {
+        // Make sure we pass back the original appWidgetId
+        val resultValue = intent
+        resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId)
+        setResult(RESULT_OK, resultValue)
+        finish()
+    }
+
+    fun sendUpdateIntent(from: String, to: String) {
+        // It is the responsibility of the configuration activity to update the app widget
+        // Send update broadcast to widget app class
+        val uri = Uri.parse("myAppWidget://createwidget").buildUpon()
+            .appendQueryParameter("id", mAppWidgetId.toString())
+            .appendQueryParameter("from", from)
+            .appendQueryParameter("to", to)
+            .build()
+
+        val backgroundIntent = HomeWidgetBackgroundIntent.getBroadcast(this, uri)
+        backgroundIntent.send()
+    }
+
+    private fun getSubmitDialogMessage(): String {
+        val widgetName = getWidgetStringName()
+        return StringBuilder().append("Create widget for ")
+            .append(widgetName)
+            .append("?").toString()
+    }
+
+    private fun getWidgetStringName() = "${top!!.substring(0, 3)}${bottom!!.substring(0, 3)}"
+
+}

android/app/src/main/kotlin/com/appttude/h_mal/easycc/CustomDialogClass.kt

@@ -0,0 +1,57 @@
+package com.appttude.h_mal.easycc
+
+import android.app.Dialog
+import android.content.Context
+import android.os.Bundle
+import android.text.Editable
+import android.text.TextWatcher
+import android.view.WindowManager
+import android.widget.ArrayAdapter
+import android.widget.ListView
+import android.widget.TextView
+import com.appttude.h_mal.easycc.R
+
+/**
+ * Custom dialog when selecting currencies from list with filter
+ */
+@Suppress("DEPRECATION")
+class CustomDialogClass(
+    context: Context,
+    private val onSelect: (String) -> Unit
+) : Dialog(context) {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.custom_dialog)
+
+        // Transparent background
+        window!!.setBackgroundDrawableResource(android.R.color.transparent)
+        // Keyboard not to overlap dialog
+        window!!.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE)
+
+        val arrayAdapter =
+            ArrayAdapter.createFromResource(
+                context, R.array.currency_arrays,
+                android.R.layout.simple_list_item_1
+            )
+
+        val list_view = findViewById<ListView>(R.id.list_view)
+        list_view.adapter = arrayAdapter
+
+        // Edit text to filter @arrayAdapter
+        findViewById<TextView>(R.id.search_text).addTextChangedListener(object : TextWatcher {
+            override fun beforeTextChanged(charSequence: CharSequence, i: Int, i1: Int, i2: Int) {}
+            override fun onTextChanged(charSequence: CharSequence, i: Int, i1: Int, i2: Int) {
+                arrayAdapter.filter.filter(charSequence)
+            }
+
+            override fun afterTextChanged(editable: Editable) {}
+        })
+
+        // interface selection back to calling activity
+        list_view.setOnItemClickListener { adapterView, _, i, _ ->
+            onSelect.invoke(adapterView.getItemAtPosition(i).toString())
+            dismiss()
+        }
+    }
+}

android/app/src/main/kotlin/com/appttude/h_mal/easycc/WidgetSubmitDialog.kt

@@ -0,0 +1,37 @@
+package com.appttude.h_mal.easycc
+
+import android.app.Dialog
+import android.content.Context
+import android.os.Bundle
+import android.widget.TextView
+
+
+/**
+ * Dialog created when submitting the completed selections
+ * in [CurrencyAppWidgetConfigureActivity]
+ */
+class WidgetSubmitDialog(
+    context: Context,
+    private val messageString: String,
+    private val dialogInterface: DialogSubmit
+) : Dialog(context) {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.confirm_dialog)
+        // layer behind dialog to be transparent
+        window!!.setBackgroundDrawableResource(android.R.color.transparent)
+        // Dialog cannot be cancelled by clicking away
+        setCancelable(false)
+
+        findViewById<TextView>(R.id.confirmText).text = messageString
+
+        // handle dialog buttons
+        findViewById<TextView>(R.id.confirmYes).setOnClickListener { dialogInterface.onSubmit() }
+        findViewById<TextView>(R.id.confirmNo).setOnClickListener { dismiss() }
+    }
+}
+
+interface DialogSubmit {
+    fun onSubmit()
+}

android/app/src/main/res/drawable/ic_background.xml

@@ -0,0 +1,24 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="1080dp"
+    android:height="1920dp"
+    android:viewportWidth="1080"
+    android:viewportHeight="1920">
+    <path android:pathData="M0,0L1080,0L1080,1920L0,1920L0,0Z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:startY="0"
+                android:startX="1080"
+                android:endY="1920"
+                android:endX="0"
+                android:type="linear">
+                <item
+                    android:offset="0"
+                    android:color="#FF315659" />
+                <item
+                    android:offset="1"
+                    android:color="#FF2978A0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+</vector>

android/app/src/main/res/drawable/ic_refresh_white_24dp.xml

@@ -0,0 +1,10 @@
+<vector android:height="24dp"
+    android:tint="#FFFFFF"
+    android:viewportHeight="24.0"
+    android:viewportWidth="24.0"
+    android:width="24dp"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M17.65,6.35C16.2,4.9 14.21,4 12,4c-4.42,0 -7.99,3.58 -7.99,8s3.57,8 7.99,8c3.73,0 6.84,-2.55 7.73,-6h-2.08c-0.82,2.33 -3.04,4 -5.65,4 -3.31,0 -6,-2.69 -6,-6s2.69,-6 6,-6c1.66,0 3.14,0.69 4.22,1.78L13,11h7V4l-2.35,2.35z" />
+</vector>

android/app/src/main/res/layout/confirm_dialog.xml

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:backgroundTint="@android:color/transparent"
+    android:orientation="vertical">
+
+
+    <androidx.cardview.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        card_view:cardBackgroundColor="@color/colour_three"
+        card_view:cardCornerRadius="22dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_margin="12dp"
+            android:orientation="vertical">
+
+            <TextView
+                android:id="@+id/confirmText"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="12dp"
+                android:layout_marginLeft="12dp"
+                android:layout_marginRight="36dp"
+                android:layout_marginBottom="24dp"
+                android:text="Create widget for AUDGBP?"
+                android:textColor="@color/colour_five" />
+
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="right"
+                android:orientation="horizontal">
+
+                <TextView
+                    android:id="@+id/confirmYes"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="8dp"
+                    android:layout_marginBottom="8dp"
+                    android:paddingLeft="12dp"
+                    android:paddingRight="12dp"
+                    android:textStyle="bold"
+                    android:text="@android:string/yes"
+                    android:textColor="@color/colour_five" />
+
+                <TextView
+                    android:id="@+id/confirmNo"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="8dp"
+                    android:textStyle="bold"
+                    android:text="@android:string/no"
+                    android:textColor="@color/colour_five" />
+
+            </LinearLayout>
+        </LinearLayout>
+
+    </androidx.cardview.widget.CardView>
+
+</LinearLayout>

android/app/src/main/res/layout/currency_app_widget.xml

@@ -0,0 +1,65 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/widget_view"
+    android:layout_width="match_parent"
+    tools:layout_width="110dp"
+    android:layout_height="72dp"
+    android:orientation="vertical"
+    android:background="#4D000000">
+
+
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:id="@+id/exchangeName"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:autoSizeMaxTextSize="20sp"
+            android:autoSizeMinTextSize="6sp"
+            android:autoSizeStepGranularity="2sp"
+            android:autoSizeTextType="uniform"
+            android:textColor="#ffffff"
+            android:text="Rate not set"
+            tools:text="AUDGBP" />
+
+        <ImageView
+            android:id="@+id/refresh_icon"
+            android:layout_width="18dp"
+            android:layout_height="18dp"
+            tools:src="@drawable/ic_refresh_white_24dp"
+            android:layout_alignParentTop="true"
+            android:layout_alignParentRight="true"
+            android:layout_alignBottom="@id/exchangeName"
+            android:adjustViewBounds="true" />
+    </RelativeLayout>
+
+    <TextView
+        android:id="@+id/exchangeRate"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:layout_marginLeft="6dp"
+        android:layout_marginRight="6dp"
+        android:autoSizeMaxTextSize="100sp"
+        android:autoSizeMinTextSize="6sp"
+        android:autoSizeStepGranularity="2sp"
+        android:autoSizeTextType="uniform"
+        android:maxLines="1"
+        android:gravity="center"
+        android:textColor="#ffffff"
+        android:textStyle="bold"
+        tools:text="0.52646215" />
+
+    <!--    <TextView-->
+    <!--        android:id="@+id/lastUpdated"-->
+    <!--        android:layout_width="match_parent"-->
+    <!--        android:layout_height="wrap_content"-->
+    <!--        android:gravity="center"-->
+    <!--        android:textSize="8sp"-->
+    <!--        android:textColor="#ffffff"-->
+    <!--        android:text=" "-->
+    <!--        tools:text="Last updated: 03:18 Wed" />-->
+</LinearLayout>

android/app/src/main/res/layout/currency_app_widget_configure.xml

@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:focusable="false"
+    android:focusableInTouchMode="true"
+    android:orientation="vertical"
+    android:background="@drawable/ic_background"
+    tools:context=".CurrencyAppWidgetConfigureActivity">
+
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_centerInParent="true"
+        android:layout_margin="12dp">
+
+        <LinearLayout
+            android:id="@+id/whole_view"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+            <androidx.cardview.widget.CardView
+                style="@style/cardview_theme"
+                android:layout_margin="11dp">
+
+                <TextView
+                    android:id="@+id/currencyOne"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="12dp"
+                    android:tag="top"
+                    android:textColor="@color/colour_five"
+                    android:textSize="18sp"
+                    tools:text="Currency One" />
+            </androidx.cardview.widget.CardView>
+
+
+            <androidx.cardview.widget.CardView
+                style="@style/cardview_theme"
+                android:layout_margin="11dp">
+
+                <TextView
+                    android:id="@+id/currencyTwo"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="12dp"
+                    android:tag="bottom"
+                    android:textColor="@color/colour_five"
+                    android:textSize="18sp"
+                    tools:text="Currency Two" />
+            </androidx.cardview.widget.CardView>
+
+        </LinearLayout>
+
+        <TextView
+            android:id="@+id/submitWidget"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_below="@id/whole_view"
+            android:layout_alignParentEnd="true"
+            android:layout_marginEnd="22dp"
+            android:padding="12dp"
+            android:tag="submit"
+            android:text="Submit"
+            android:textColor="@color/colour_five" />
+    </RelativeLayout>
+</RelativeLayout>

android/app/src/main/res/layout/custom_dialog.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:backgroundTint="@android:color/transparent"
+    android:orientation="vertical">
+
+    <androidx.cardview.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
+        android:layout_weight="1"
+        android:layout_height="0dp"
+        android:layout_width="match_parent"
+        card_view:cardCornerRadius="22dp"
+        card_view:cardBackgroundColor="@color/colour_three"
+        android:layout_marginTop="45dp">
+
+        <ListView
+            android:id="@+id/list_view"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"></ListView>
+
+    </androidx.cardview.widget.CardView>
+
+    <androidx.cardview.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="45dp"
+        android:layout_marginTop="20dp"
+        card_view:cardBackgroundColor="@color/colour_three"
+        card_view:cardCornerRadius="22dp">
+
+        <EditText
+            android:id="@+id/search_text"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_margin="8dp"
+            android:hint="Search Currency" />
+    </androidx.cardview.widget.CardView>
+
+</LinearLayout>

android/app/src/main/res/values-night/colors.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colour_one">#253031</color>
+    <color name="colour_two">#315659</color>
+    <color name="colour_three">#2978A0</color>
+    <color name="colour_four">#8549ff</color>
+    <color name="colour_five">#C6E0FF</color>
+</resources>

android/app/src/main/res/values/colors.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colour_one">#253031</color>
+    <color name="colour_two">#315659</color>
+    <color name="colour_three">#2978A0</color>
+    <color name="colour_four">#8549ff</color>
+    <color name="colour_five">#C6E0FF</color>
+</resources>

android/app/src/main/res/values/strings.xml

@@ -0,0 +1,161 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string-array name="currency_arrays">
+        <item>ALL - Albanian Lek</item>
+        <item>AFN - Afghan Afghani</item>
+        <item>DZD - Algerian Dinar</item>
+        <item>AOA - Angolan Kwanza</item>
+        <item>ARS - Argentine Peso</item>
+        <item>AMD - Armenian Dram</item>
+        <item>AWG - Aruban Florin</item>
+        <item>AUD - Australian Dollar</item>
+        <item>AZN - Azerbaijani Manat</item>
+        <item>BSD - Bahamian Dollar</item>
+        <item>BHD - Bahraini Dinar</item>
+        <item>BDT - Bangladeshi Taka</item>
+        <item>BBD - Barbadian Dollar</item>
+        <item>BYR - Belarusian Ruble</item>
+        <item>BZD - Belize Dollar</item>
+        <item>BTN - Bhutanese Ngultrum</item>
+        <item>BTC - Bitcoin</item>
+        <item>BOB - Bolivian Boliviano</item>
+        <item>BAM - Bosnia And Herzegovina Konvertibilna Marka</item>
+        <item>BWP - Botswana Pula</item>
+        <item>BRL - Brazilian Real</item>
+        <item>GBP - British Pound</item>
+        <item>BND - Brunei Dollar</item>
+        <item>BGN - Bulgarian Lev</item>
+        <item>BIF - Burundi Franc</item>
+        <item>KHR - Cambodian Riel</item>
+        <item>CAD - Canadian Dollar</item>
+        <item>CVE - Cape Verdean Escudo</item>
+        <item>KYD - Cayman Islands Dollar</item>
+        <item>XAF - Central African CFA Franc</item>
+        <item>XPF - CFP Franc</item>
+        <item>CLP - Chilean Peso</item>
+        <item>CNY - Chinese Yuan</item>
+        <item>COP - Colombian Peso</item>
+        <item>KMF - Comorian Franc</item>
+        <item>CDF - Congolese Franc</item>
+        <item>CRC - Costa Rican Colon</item>
+        <item>HRK - Croatian Kuna</item>
+        <item>CUP - Cuban Peso</item>
+        <item>CZK - Czech Koruna</item>
+        <item>DKK - Danish Krone</item>
+        <item>DJF - Djiboutian Franc</item>
+        <item>DOP - Dominican Peso</item>
+        <item>XCD - East Caribbean Dollar</item>
+        <item>EGP - Egyptian Pound</item>
+        <item>ERN - Eritrean Nakfa</item>
+        <item>ETB - Ethiopian Birr</item>
+        <item>EUR - Euro</item>
+        <item>FKP - Falkland Islands Pound</item>
+        <item>FJD - Fijian Dollar</item>
+        <item>GMD - Gambian Dalasi</item>
+        <item>GEL - Georgian Lari</item>
+        <item>GHS - Ghanaian Cedi</item>
+        <item>GIP - Gibraltar Pound</item>
+        <item>GTQ - Guatemalan Quetzal</item>
+        <item>GNF - Guinean Franc</item>
+        <item>GYD - Guyanese Dollar</item>
+        <item>HTG - Haitian Gourde</item>
+        <item>HNL - Honduran Lempira</item>
+        <item>HKD - Hong Kong Dollar</item>
+        <item>HUF - Hungarian Forint</item>
+        <item>ISK - Icelandic Kr\u00f3na</item>
+        <item>INR - Indian Rupee</item>
+        <item>IDR - Indonesian Rupiah</item>
+        <item>IRR - Iranian Rial</item>
+        <item>IQD - Iraqi Dinar</item>
+        <item>ILS - Israeli New Sheqel</item>
+        <item>JMD - Jamaican Dollar</item>
+        <item>JPY - Japanese Yen</item>
+        <item>JOD - Jordanian Dinar</item>
+        <item>KZT - Kazakhstani Tenge</item>
+        <item>KES - Kenyan Shilling</item>
+        <item>KWD - Kuwaiti Dinar</item>
+        <item>KGS - Kyrgyzstani Som</item>
+        <item>LAK - Lao Kip</item>
+        <item>LVL - Latvian Lats</item>
+        <item>LBP - Lebanese Lira</item>
+        <item>LSL - Lesotho Loti</item>
+        <item>LRD - Liberian Dollar</item>
+        <item>LYD - Libyan Dinar</item>
+        <item>MOP - Macanese Pataca</item>
+        <item>MKD - Macedonian Denar</item>
+        <item>MGA - Malagasy Ariary</item>
+        <item>MWK - Malawian Kwacha</item>
+        <item>MYR - Malaysian Ringgit</item>
+        <item>MVR - Maldivian Rufiyaa</item>
+        <item>MRO - Mauritanian Ouguiya</item>
+        <item>MUR - Mauritian Rupee</item>
+        <item>MXN - Mexican Peso</item>
+        <item>MDL - Moldovan Leu</item>
+        <item>MNT - Mongolian Tugrik</item>
+        <item>MAD - Moroccan Dirham</item>
+        <item>MZN - Mozambican Metical</item>
+        <item>MMK - Myanma Kyat</item>
+        <item>NAD - Namibian Dollar</item>
+        <item>NPR - Nepalese Rupee</item>
+        <item>ANG - Netherlands Antillean Gulden</item>
+        <item>TWD - New Taiwan Dollar</item>
+        <item>NZD - New Zealand Dollar</item>
+        <item>NIO - Nicaraguan Cordoba</item>
+        <item>NGN - Nigerian Naira</item>
+        <item>KPW - North Korean Won</item>
+        <item>NOK - Norwegian Krone</item>
+        <item>OMR - Omani Rial</item>
+        <item>TOP - Paanga</item>
+        <item>PKR - Pakistani Rupee</item>
+        <item>PAB - Panamanian Balboa</item>
+        <item>PGK - Papua New Guinean Kina</item>
+        <item>PYG - Paraguayan Guarani</item>
+        <item>PEN - Peruvian Nuevo Sol</item>
+        <item>PHP - Philippine Peso</item>
+        <item>PLN - Polish Zloty</item>
+        <item>QAR - Qatari Riyal</item>
+        <item>RON - Romanian Leu</item>
+        <item>RUB - Russian Ruble</item>
+        <item>RWF - Rwandan Franc</item>
+        <item>SHP - Saint Helena Pound</item>
+        <item>WST - Samoan Tala</item>
+        <item>STD - Sao Tome And Principe Dobra</item>
+        <item>SAR - Saudi Riyal</item>
+        <item>RSD - Serbian Dinar</item>
+        <item>SCR - Seychellois Rupee</item>
+        <item>SLL - Sierra Leonean Leone</item>
+        <item>SGD - Singapore Dollar</item>
+        <item>SBD - Solomon Islands Dollar</item>
+        <item>SOS - Somali Shilling</item>
+        <item>ZAR - South African Rand</item>
+        <item>KRW - South Korean Won</item>
+        <item>XDR - Special Drawing Rights</item>
+        <item>LKR - Sri Lankan Rupee</item>
+        <item>SDG - Sudanese Pound</item>
+        <item>SRD - Surinamese Dollar</item>
+        <item>SZL - Swazi Lilangeni</item>
+        <item>SEK - Swedish Krona</item>
+        <item>CHF - Swiss Franc</item>
+        <item>SYP - Syrian Pound</item>
+        <item>TJS - Tajikistani Somoni</item>
+        <item>TZS - Tanzanian Shilling</item>
+        <item>THB - Thai Baht</item>
+        <item>TTD - Trinidad and Tobago Dollar</item>
+        <item>TND - Tunisian Dinar</item>
+        <item>TRY - Turkish New Lira</item>
+        <item>TMT - Turkmenistan Manat</item>
+        <item>AED - UAE Dirham</item>
+        <item>UGX - Ugandan Shilling</item>
+        <item>UAH - Ukrainian Hryvnia</item>
+        <item>USD - United States Dollar</item>
+        <item>UYU - Uruguayan Peso</item>
+        <item>UZS - Uzbekistani Som</item>
+        <item>VUV - Vanuatu Vatu</item>
+        <item>VEF - Venezuelan Bolivar</item>
+        <item>VND - Vietnamese Dong</item>
+        <item>XOF - West African CFA Franc</item>
+        <item>YER - Yemeni Rial</item>
+        <item>ZMW - Zambian Kwacha</item>
+    </string-array>
+</resources>

android/app/src/main/res/values/styles.xml

@@ -15,4 +15,12 @@
     <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
         <item name="android:windowBackground">?android:colorBackground</item>
     </style>
+
+    <style name="cardview_theme" parent="CardView">
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:layout_height">match_parent</item>
+        <item name="cardBackgroundColor">@color/colour_three</item>
+        <item name="cardCornerRadius">22dp</item>
+        <!--<item name="cardElevation">0dp</item>-->
+    </style>
 </resources>

android/app/src/main/res/xml/currency_app_widget_info.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:configure="com.appttude.h_mal.easycc.CurrencyAppWidgetConfigureActivity"
+    android:initialKeyguardLayout="@layout/currency_app_widget"
+    android:initialLayout="@layout/currency_app_widget"
+    android:minWidth="110dp"
+    android:minHeight="40dp"
+    android:previewImage="@drawable/easyycc_widget_preview"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="3600000"
+    android:widgetCategory="home_screen|keyguard" />

android/build.gradle

@@ -6,7 +6,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.2.0'
+        classpath 'com.android.tools.build:gradle:4.1.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

lib/Utils/currency_utils.dart

@@ -2,6 +2,9 @@ extension CurrencyExtension on String {
   /// Convert currency string into currency code
   /// eg. "AUD - Australian Dollar" to "AUD"
   String getCurrencyCode(){
+    if (length == 3) {
+      return this;
+    }
     return substring(0,3);
   }
 }

lib/base_widget.dart

@@ -2,10 +2,10 @@ import 'package:flutter/material.dart';
 import 'package:stacked/stacked.dart';
 import 'package:toast/toast.dart';
 
-import 'base_viewmodel.dart';
 import 'Utils/constants.dart';
 import 'Utils/view_state.dart';
 import 'Utils/view_utils.dart';
+import 'base_viewmodel.dart';
 
 abstract class BaseStatelessWidget<T extends BaseViewmodel>
     extends StatelessWidget {

lib/data/network/app_dio.dart

@@ -5,8 +5,8 @@ class AppDio {
   static Dio createDio() {
     Dio dio = Dio(
         BaseOptions(
-            receiveTimeout: 60000,
+            receiveTimeout: 30000,
-            connectTimeout: 120000,
+            connectTimeout: 30000,
         )
     );
     dio.interceptors.add(LogInterceptor());

lib/data/repository/repository_impl.dart

@@ -4,7 +4,6 @@ import 'package:easy_cc_flutter/Utils/currency_utils.dart';
 import 'package:easy_cc_flutter/data/model/currency.dart';
 import 'package:easy_cc_flutter/data/prefs/currency_pair.dart';
 
-import '../../locator.dart';
 import '../../main.dart';
 import '../network/backup_currency_api.dart';
 import '../network/currency_api.dart';
@@ -13,9 +12,11 @@ import '../prefs/preference_provider.dart';
 import 'repository.dart';
 
 class RepositoryImpl extends Repository with SafeApiCall {
-  final PreferenceProvider _prefs = locator<PreferenceProvider>();
+  final PreferenceProvider _prefs;
-  final CurrencyApi _api = locator<CurrencyApi>();
+  final CurrencyApi _api;
-  final BackupCurrencyApi _backupApi = locator<BackupCurrencyApi>();
+  final BackupCurrencyApi _backupApi;
+
+  RepositoryImpl(this._prefs, this._api, this._backupApi);
 
   @override
   CurrencyPair getConversionPair() {

lib/home.dart

@@ -1,19 +1,20 @@
-import 'package:easy_cc_flutter/main_view_model.dart';
 import 'package:easy_cc_flutter/Utils/selection_type.dart';
-import 'package:easy_cc_flutter/views/drop_down_box.dart';
+import 'package:easy_cc_flutter/locator.dart';
+import 'package:easy_cc_flutter/main_view_model.dart';
 import 'package:easy_cc_flutter/views/converter_edit_text.dart';
+import 'package:easy_cc_flutter/views/drop_down_box.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
-import 'base_widget.dart';
 import 'Utils/constants.dart';
+import 'base_widget.dart';
 
 class HomePage extends BaseStatelessWidget<MainViewModel> {
   const HomePage({super.key});
 
   @override
   MainViewModel createViewModel() {
-    return MainViewModel();
+    return locator<MainViewModel>();
   }
 
   @override

lib/locator.dart

@@ -1,10 +1,10 @@
-import 'package:easy_cc_flutter/main_view_model.dart';
 import 'package:easy_cc_flutter/data/network/backup_currency_api.dart';
 import 'package:easy_cc_flutter/data/network/currency_api.dart';
 import 'package:easy_cc_flutter/data/repository/repository_impl.dart';
+import 'package:easy_cc_flutter/main_view_model.dart';
 import 'package:get_it/get_it.dart';
-
 import 'data/prefs/preference_provider.dart';
+import 'data/repository/repository.dart';
 
 GetIt locator = GetIt.instance;
 
@@ -12,6 +12,6 @@ void setupLocator() {
   locator.registerLazySingleton(() => PreferenceProvider());
   locator.registerLazySingleton(() => CurrencyApi.create());
   locator.registerLazySingleton(() => BackupCurrencyApi.create());
-  locator.registerLazySingleton(() => RepositoryImpl());
+  locator.registerLazySingleton<Repository>(() => RepositoryImpl(locator<PreferenceProvider>(), locator<CurrencyApi>(),locator<BackupCurrencyApi>()));
-  locator.registerFactory(() => MainViewModel());
+  locator.registerFactory(() => MainViewModel(locator<Repository>()));
 }

lib/main.dart

@@ -1,7 +1,14 @@
+import 'package:easy_cc_flutter/Utils/currency_utils.dart';
+import 'package:easy_cc_flutter/data/network/backup_currency_api.dart';
+import 'package:easy_cc_flutter/data/network/currency_api.dart';
 import 'package:flutter/material.dart';
+import 'package:home_widget/home_widget.dart';
 import 'package:logger/logger.dart';
 
+import 'data/model/currency.dart';
 import 'data/prefs/preference_provider.dart';
+import 'data/repository/repository.dart';
+import 'data/repository/repository_impl.dart';
 import 'home.dart';
 import 'locator.dart';
 
@@ -9,13 +16,56 @@ var logger = Logger(
   printer: PrettyPrinter(),
 );
 
-void main() async {
+Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   setupLocator();
   await locator<PreferenceProvider>().init();
+  await HomeWidget.registerBackgroundCallback(backgroundCallback);
   runApp(const MyApp());
 }
 
+Future<void> backgroundCallback(Uri? uri) async {
+  PreferenceProvider prefs = PreferenceProvider();
+  await prefs.init();
+  CurrencyApi api = CurrencyApi.create();
+  BackupCurrencyApi backupApi = BackupCurrencyApi.create();
+  RepositoryImpl repository = RepositoryImpl(prefs, api, backupApi);
+
+  if (uri?.host == 'updatewidget') {
+    Map<String, String>? querys = uri?.queryParameters;
+    String? widgetId = querys?["id"];
+
+    await updateWidget(widgetId, repository);
+  } else if (uri?.host == 'createwidget') {
+    Map<String, String>? querys = uri?.queryParameters;
+    String? widgetId = querys?["id"];
+    String? from = querys?["from"]?.getCurrencyCode();
+    String? to = querys?["to"]?.getCurrencyCode();
+
+    await HomeWidget.saveWidgetData<String>("${widgetId}_from", from);
+    await HomeWidget.saveWidgetData<String>("${widgetId}_to", to);
+
+    await updateWidget(widgetId, repository);
+  }
+}
+
+Future<void> updateWidget(String? widgetId, Repository repository) async {
+  String? from = await HomeWidget.getWidgetData<String>("${widgetId}_from");
+  String? to = await HomeWidget.getWidgetData<String>("${widgetId}_to");
+
+  if (from == null || to == null) {
+    return;
+  }
+
+  Currency currency = await repository.getConversationRateFromApi(from, to);
+
+  await HomeWidget.saveWidgetData<String>("${widgetId}_from", from);
+  await HomeWidget.saveWidgetData<String>("${widgetId}_to", to);
+  await HomeWidget.saveWidgetData<String>("${widgetId}_rate", currency.rate.toString());
+
+  await HomeWidget.updateWidget(name: 'AppWidgetProvider', iOSName: 'AppWidgetProvider');
+}
+
 class MyApp extends StatelessWidget {
   const MyApp({super.key});
 

lib/main_view_model.dart

@@ -1,14 +1,14 @@
-import 'package:easy_cc_flutter/base_viewmodel.dart';
 import 'package:easy_cc_flutter/Utils/selection_type.dart';
+import 'package:easy_cc_flutter/base_viewmodel.dart';
 
 import 'Utils/constants.dart';
 import 'data/prefs/currency_pair.dart';
 import 'data/repository/repository.dart';
-import 'data/repository/repository_impl.dart';
-import 'locator.dart';
 
 class MainViewModel extends BaseViewmodel {
-  final Repository _repository = locator<RepositoryImpl>();
+  final Repository _repository;
+
+  MainViewModel(this._repository);
 
   double conversionRate = 1.0;
 

pubspec.lock

@@ -282,6 +282,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
+  home_widget:
+    dependency: "direct main"
+    description:
+      name: home_widget
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.6"
   http_multi_server:
     dependency: transitive
     description:

pubspec.yaml

@@ -49,6 +49,7 @@ dependencies:
   mockito: ^5.3.2
   json_annotation: ^4.7.0
   flutter_launcher_icons: ^0.10.0
+  home_widget: ^0.1.6
 
 dev_dependencies:
   flutter_test:

test/unit_test/repository_test.dart

@@ -8,7 +8,6 @@ import 'package:easy_cc_flutter/data/network/currency_api.dart';
 import 'package:easy_cc_flutter/data/prefs/currency_pair.dart';
 import 'package:easy_cc_flutter/data/prefs/preference_provider.dart';
 import 'package:easy_cc_flutter/data/repository/repository_impl.dart';
-import 'package:easy_cc_flutter/locator.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:mockito/annotations.dart';
 import 'package:mockito/mockito.dart';
@@ -29,7 +28,8 @@ import 'repository_test.mocks.dart';
   MockSpec<DioError>(onMissingStub: OnMissingStub.returnDefault)
 ])
 void main() {
-  late RepositoryImpl repository;
+  late RepositoryImpl sut;
+
   late PreferenceProvider preferenceProvider;
   late CurrencyApi currencyApi;
   late BackupCurrencyApi backupCurrencyApi;
@@ -44,11 +44,7 @@ void main() {
     currencyApi = MockCurrencyApi();
     backupCurrencyApi = MockBackupCurrencyApi();
 
-    locator.registerLazySingleton(() => preferenceProvider);
+    sut = RepositoryImpl(preferenceProvider, currencyApi, backupCurrencyApi);
-    locator.registerLazySingleton(() => currencyApi);
-    locator.registerLazySingleton(() => backupCurrencyApi);
-
-    repository = RepositoryImpl();
   });
 
   test('get currency pair from prefs', () {
@@ -59,7 +55,7 @@ void main() {
     when(preferenceProvider.getConversionPair()).thenReturn(pair);
 
     // Then
-    expect(repository.getConversionPair(), pair);
+    expect(sut.getConversionPair(), pair);
   });
 
   test('get currency rate from API', () async {
@@ -77,7 +73,7 @@ void main() {
 
     // Then
     Currency retrieved =
-        await repository.getConversationRateFromApi(fromCurrency, toCurrency);
+        await sut.getConversationRateFromApi(fromCurrency, toCurrency);
     expect(retrieved.toString(), currencyObject.toString());
   });
 
@@ -98,7 +94,7 @@ void main() {
 
     // Then
     Currency retrieved =
-        await repository.getConversationRateFromApi(fromCurrency, toCurrency);
+        await sut.getConversationRateFromApi(fromCurrency, toCurrency);
     expect(retrieved.toString(), currencyObject.toString());
   });
 
@@ -115,7 +111,7 @@ void main() {
         .thenAnswer((_) async => Future.error(backUpError));
 
     // Then
-    expect(() async => await repository.getConversationRateFromApi(fromCurrency, toCurrency),
+    expect(() async => await sut.getConversationRateFromApi(fromCurrency, toCurrency),
         throwsA(predicate((e) =>
             e is HttpException &&
             e.message == 'Error message')));

test/unit_test/viewmodel_test.dart

@@ -1,15 +1,14 @@
 import 'dart:io';
 
-import 'package:easy_cc_flutter/main_view_model.dart';
 import 'package:easy_cc_flutter/Utils/selection_type.dart';
+import 'package:easy_cc_flutter/Utils/view_state.dart';
 import 'package:easy_cc_flutter/data/model/currency.dart';
 import 'package:easy_cc_flutter/data/prefs/currency_pair.dart';
 import 'package:easy_cc_flutter/data/repository/repository_impl.dart';
-import 'package:easy_cc_flutter/locator.dart';
+import 'package:easy_cc_flutter/main_view_model.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:mockito/annotations.dart';
 import 'package:mockito/mockito.dart';
-import 'package:easy_cc_flutter/Utils/view_state.dart';
 
 import 'viewmodel_test.mocks.dart';
 
@@ -29,9 +28,7 @@ void main() {
     // Create mock object.
     repository = MockRepositoryImpl();
 
-    locator.registerLazySingleton(() => repository);
+    mainViewModel = MainViewModel(repository);
-
-    mainViewModel = MainViewModel();
   });
 
   test('get currency pair from prefs', () {