ДЗ Custom View: Артем Данилов

app/build.gradle

@@ -1,16 +1,16 @@
 plugins {
     id 'com.android.application'
     id 'kotlin-android'
+    id 'org.jetbrains.kotlin.plugin.serialization'
 }
 
 android {
-    compileSdkVersion 30
-    buildToolsVersion "30.0.3"
+    compileSdk 35
 
     defaultConfig {
         applicationId "otus.homework.customview"
         minSdkVersion 23
-        targetSdkVersion 30
+        targetSdkVersion 35
         versionCode 1
         versionName "1.0"
 
@@ -24,22 +24,24 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
     }
     kotlinOptions {
-        jvmTarget = '1.8'
+        jvmTarget = '17'
     }
+    namespace 'otus.homework.customview'
 }
 
 dependencies {
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-    implementation 'androidx.core:core-ktx:1.3.2'
-    implementation 'androidx.appcompat:appcompat:1.2.0'
-    implementation 'com.google.android.material:material:1.3.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
-    testImplementation 'junit:junit:4.+'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+    implementation 'androidx.core:core-ktx:1.15.0'
+    implementation 'androidx.appcompat:appcompat:1.7.0'
+    implementation 'com.google.android.material:material:1.12.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.2.0'
+    implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.8.0-RC'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.2.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.6.1'
 }

app/src/main/AndroidManifest.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    package="otus.homework.customview">
+    xmlns:android="http://schemas.android.com/apk/res/android">
 
     <application
         android:allowBackup="true"
@@ -10,7 +9,8 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.CustomView">
-        <activity android:name=".MainActivity">
+        <activity android:name=".MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/otus/homework/customview/ExpensesInfoItem.kt

@@ -0,0 +1,18 @@
+package otus.homework.customview
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class ExpensesInfoItem(
+    @SerialName("id")
+    val id: Int = 0,
+    @SerialName("name")
+    val name: String = "",
+    @SerialName("amount")
+    val amount: Int = 0,
+    @SerialName("category")
+    val category: String = "",
+    @SerialName("time")
+    val time: Long = 0
+)

app/src/main/java/otus/homework/customview/ExpensesRepository.kt

@@ -0,0 +1,16 @@
+package otus.homework.customview
+
+import android.content.Context
+import kotlinx.serialization.json.Json
+
+
+class ExpensesRepository(private val context: Context) {
+    fun getExpenses(): List<ExpensesInfoItem> {
+        val payloadString = context.resources.openRawResource(R.raw.payload).bufferedReader().use { it.readText() }
+        return Json.decodeFromString<List<ExpensesInfoItem>>(payloadString)
+    }
+
+    fun getExpensesByCategory(category: String): List<ExpensesInfoItem> {
+        return getExpenses().filter { it.category == category }
+    }
+}

app/src/main/java/otus/homework/customview/Extensions.kt

@@ -0,0 +1,25 @@
+package otus.homework.customview
+
+import android.content.Context
+import android.graphics.Canvas
+import android.text.StaticLayout
+import android.util.TypedValue
+import androidx.core.graphics.withTranslation
+
+fun Context.dpToPx(dp: Int): Float {
+    return dp.toFloat() * this.resources.displayMetrics.density
+}
+
+fun Context.spToPx(sp: Int): Float {
+    return TypedValue.applyDimension(
+        TypedValue.COMPLEX_UNIT_SP,
+        sp.toFloat(),
+        this.resources.displayMetrics
+    )
+}
+
+fun StaticLayout.draw(canvas: Canvas, x: Float, y: Float) {
+    canvas.withTranslation(x, y) {
+        draw(this)
+    }
+}

app/src/main/java/otus/homework/customview/LineChartFragment.kt

@@ -0,0 +1,53 @@
+package otus.homework.customview
+
+import android.graphics.Color
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+
+private const val CATEGORY = "category"
+private const val COLOR = "color"
+
+class LineChartFragment : Fragment() {
+    private var category: String? = null
+    private var color: Int = Color.RED
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        arguments?.let {
+            category = it.getString(CATEGORY)
+            color = it.getInt(COLOR)
+        }
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?,
+    ): View? {
+        return inflater.inflate(R.layout.fragment_line_chart, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        val lineChart = view.findViewById<LineChartView>(R.id.line_chart)
+        category?.let {
+            lineChart.setDataAndColor(
+                ExpensesRepository(requireContext()).getExpensesByCategory(it),
+                color
+            )
+        }
+    }
+
+    companion object {
+        @JvmStatic
+        fun newInstance(category: String, color: Int) =
+            LineChartFragment().apply {
+                arguments = Bundle().apply {
+                    putString(CATEGORY, category)
+                    putInt(COLOR, color)
+                }
+            }
+    }
+}

app/src/main/java/otus/homework/customview/LineChartInterface.kt

@@ -0,0 +1,5 @@
+package otus.homework.customview
+
+interface LineChartInterface {
+    fun setDataAndColor(expensesInfoList: List<ExpensesInfoItem>, color: Int)
+}