added chart sharing

Added a button to share the chart wherever the user wants.
NikitaSutulov · May 24, 2024 · ad0921a · ad0921a
1 parent ae4d3c2
commit ad0921a
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Showing 7 changed files with 68 additions and 9 deletions.
diff --git a/app/src/androidTest/java/com/nickytoolchick/agraph/ChartOptionsCollectingTest.kt b/app/src/androidTest/java/com/nickytoolchick/agraph/ChartOptionsCollectingTest.kt
@@ -3,6 +3,7 @@ package com.nickytoolchick.agraph
 import androidx.test.espresso.Espresso.onView
 import androidx.test.espresso.action.ViewActions.click
 import androidx.test.espresso.action.ViewActions.replaceText
+import androidx.test.espresso.action.ViewActions.swipeUp
 import androidx.test.espresso.assertion.ViewAssertions.matches
 import androidx.test.espresso.intent.Intents
 import androidx.test.espresso.intent.matcher.IntentMatchers.hasComponent

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
@@ -36,6 +36,16 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="com.nickytoolchick.agraph.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
+
     </application>
 
 </manifest>
diff --git a/app/src/main/java/com/nickytoolchick/agraph/fileio/FileWriter.kt b/app/src/main/java/com/nickytoolchick/agraph/fileio/FileWriter.kt
@@ -1,11 +1,14 @@
 package com.nickytoolchick.agraph.fileio
 
 import android.content.Context
+import android.content.Intent
 import android.graphics.Bitmap
 import android.graphics.Canvas
 import android.media.MediaScannerConnection
+import android.net.Uri
 import android.os.Environment
 import android.widget.Toast
+import androidx.core.content.FileProvider
 import com.nickytoolchick.agraph.data.ChartOptions
 import com.nickytoolchick.agraph.data.Constants
 import com.nickytoolchick.agraph.data.DatasetOptions
@@ -32,7 +35,7 @@ class FileWriter {
         return Json.encodeToString(chartOptions) + Constants.SPLITTER + Json.encodeToString(datasetOptions)
     }
 
-    fun exportChartAsPng(chartRenderer: ChartRenderer) {
+    fun exportChartAsPng(chartRenderer: ChartRenderer): File? {
         val bitmap = Bitmap.createBitmap(chartRenderer.width, chartRenderer.height, Bitmap.Config.ARGB_8888)
         val canvas = Canvas(bitmap)
         chartRenderer.draw(canvas)
@@ -51,14 +54,30 @@ class FileWriter {
                 null
             )
             Toast.makeText(chartRenderer.context, "Chart exported to gallery", Toast.LENGTH_SHORT).show()
+            return file
         } catch (e: IOException) {
             e.printStackTrace()
             Toast.makeText(chartRenderer.context, "Export failed", Toast.LENGTH_SHORT).show()
+            return null
         }
     }
 
     private fun generateImageFileName(): String {
         val formatter = DateTimeFormatter.ofPattern("yyyy_MM_dd_HH_mm_ss_SSS")
         return "chart${LocalDateTime.now().format(formatter)}.png"
     }
+
+    fun shareChart(ctx: Context, chartRenderer: ChartRenderer) {
+        val file = exportChartAsPng(chartRenderer)
+        file?.let {
+            val uri: Uri = FileProvider.getUriForFile(ctx, "com.nickytoolchick.agraph.fileprovider", it)
+            val shareIntent: Intent = Intent().apply {
+                action = Intent.ACTION_SEND
+                putExtra(Intent.EXTRA_STREAM, uri)
+                type = "image/png"
+                addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+            }
+            ctx.startActivity(Intent.createChooser(shareIntent, "Share chart via"))
+        }
+    }
 }
diff --git a/app/src/main/java/com/nickytoolchick/agraph/ui/ChartRenderActivity.kt b/app/src/main/java/com/nickytoolchick/agraph/ui/ChartRenderActivity.kt
@@ -20,6 +20,8 @@ class ChartRenderActivity : AppCompatActivity() {
     lateinit var mainActivityIntent: Intent
     private lateinit var binding: ActivityChartRenderBinding
 
+    private val fileWriter = FileWriter()
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         binding = ActivityChartRenderBinding.inflate(layoutInflater)
@@ -30,9 +32,12 @@ class ChartRenderActivity : AppCompatActivity() {
         setContentView(binding.root)
 
         binding.exportButton.setOnClickListener {
-            val fileWriter = FileWriter()
             fileWriter.exportChartAsPng(binding.chartRenderer)
         }
+
+        binding.shareButton.setOnClickListener {
+            fileWriter.shareChart(this, binding.chartRenderer)
+        }
     }
 
     private fun initChartRenderer() {

diff --git a/app/src/main/res/layout/activity_chart_options.xml b/app/src/main/res/layout/activity_chart_options.xml
@@ -8,12 +8,13 @@
 
     <ScrollView
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="match_parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintBottom_toTopOf="@+id/submitChartOptionsButton"
-        android:layout_margin="15dp">
+        android:layout_margin="10dp"
+        android:paddingBottom="60dp">
 
         <LinearLayout
             android:id="@+id/inputChartOptionsLayout"

diff --git a/app/src/main/res/layout/activity_chart_render.xml b/app/src/main/res/layout/activity_chart_render.xml
@@ -24,15 +24,34 @@
 
     </FrameLayout>
 
-    <Button
-        android:id="@+id/exportButton"
-        android:layout_width="wrap_content"
+    <LinearLayout
+        android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:orientation="horizontal"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/chartRendererLayout"
-        android:text="Export as PNG"/>
+        app:layout_constraintTop_toBottomOf="@+id/chartRendererLayout">
+
+        <Button
+            android:id="@+id/exportButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_margin="10dp"
+            android:text="Export as PNG"/>
+
+        <Button
+            android:id="@+id/shareButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_margin="10dp"
+            android:text="Share image"/>
+
+    </LinearLayout>
+
+
 
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/xml/file_paths.xml b/app/src/main/res/xml/file_paths.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <external-path name="external_files" path="." />
+</paths>