From bd018ba28ddfd63c443930aa70ce6ec8a0e97127 Mon Sep 17 00:00:00 2001
From: Amit Kundu <amit.kundu@dreambroker.fi>
Date: Mon, 15 May 2023 20:27:43 +0300
Subject: [PATCH] Replace "Global Scope" with "lifeCycleScope"

---
 pdfViewer/build.gradle                           |  4 ++++
 .../java/com/rajat/pdfviewer/PdfDownloader.kt    | 16 ++++++++--------
 .../java/com/rajat/pdfviewer/PdfRendererView.kt  | 11 +++++++++--
 3 files changed, 21 insertions(+), 10 deletions(-)

diff --git a/pdfViewer/build.gradle b/pdfViewer/build.gradle
index 64a34f7..4930028 100644
--- a/pdfViewer/build.gradle
+++ b/pdfViewer/build.gradle
@@ -35,6 +35,8 @@ android {
 }
 
 dependencies {
+    def lifecycle_version = "2.4.1"
+
     implementation fileTree(dir: "libs", include: ["*.jar"])
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
     implementation 'androidx.core:core-ktx:1.9.0'
@@ -49,4 +51,6 @@ dependencies {
     androidTestImplementation 'androidx.test.ext:junit:1.1.4'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.0'
 
+    implementation "androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version"
+    implementation "androidx.lifecycle:lifecycle-common:$lifecycle_version"
 }
diff --git a/pdfViewer/src/main/java/com/rajat/pdfviewer/PdfDownloader.kt b/pdfViewer/src/main/java/com/rajat/pdfviewer/PdfDownloader.kt
index 092b01d..cc5f543 100644
--- a/pdfViewer/src/main/java/com/rajat/pdfviewer/PdfDownloader.kt
+++ b/pdfViewer/src/main/java/com/rajat/pdfviewer/PdfDownloader.kt
@@ -1,9 +1,8 @@
 package com.rajat.pdfviewer
 
 import android.content.Context
+import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.async
 import kotlinx.coroutines.launch
 import java.io.BufferedInputStream
 import java.io.File
@@ -20,14 +19,15 @@ internal class PdfDownloader(url: String, private val listener: StatusListener)
         fun onDownloadProgress(currentBytes: Long, totalBytes: Long) {}
         fun onDownloadSuccess(absolutePath: String) {}
         fun onError(error: Throwable) {}
+        fun getCoroutineScope(): CoroutineScope
     }
 
     init {
-        GlobalScope.async { download(url) }
+        listener.getCoroutineScope().launch(Dispatchers.IO) { download(url) }
     }
 
     private fun download(downloadUrl: String) {
-        GlobalScope.launch(Dispatchers.Main) { listener.onDownloadStart() }
+        listener.getCoroutineScope().launch(Dispatchers.Main) { listener.onDownloadStart() }
         val outputFile = File(listener.getContext().cacheDir, "downloaded_pdf.pdf")
         if (outputFile.exists())
             outputFile.delete()
@@ -49,7 +49,7 @@ internal class PdfDownloader(url: String, private val listener: StatusListener)
                     break
                 if (totalLength > 0) {
                     downloaded += bufferSize
-                    GlobalScope.launch(Dispatchers.Main) {
+                    listener.getCoroutineScope().launch(Dispatchers.Main) {
                         listener.onDownloadProgress(
                             downloaded.toLong(),
                             totalLength.toLong()
@@ -60,9 +60,9 @@ internal class PdfDownloader(url: String, private val listener: StatusListener)
             } while (true)
         } catch (e: Exception) {
             e.printStackTrace()
-            GlobalScope.launch(Dispatchers.Main) { listener.onError(e) }
+            listener.getCoroutineScope().launch(Dispatchers.Main) { listener.onError(e) }
             return
         }
-        GlobalScope.launch(Dispatchers.Main) { listener.onDownloadSuccess(outputFile.absolutePath) }
+        listener.getCoroutineScope().launch(Dispatchers.Main) { listener.onDownloadSuccess(outputFile.absolutePath) }
     }
-}
\ No newline at end of file
+}
diff --git a/pdfViewer/src/main/java/com/rajat/pdfviewer/PdfRendererView.kt b/pdfViewer/src/main/java/com/rajat/pdfviewer/PdfRendererView.kt
index dbee910..e08ba57 100644
--- a/pdfViewer/src/main/java/com/rajat/pdfviewer/PdfRendererView.kt
+++ b/pdfViewer/src/main/java/com/rajat/pdfviewer/PdfRendererView.kt
@@ -15,12 +15,16 @@ import android.webkit.WebView
 import android.webkit.WebViewClient
 import android.widget.FrameLayout
 import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+import androidx.lifecycle.LifecycleCoroutineScope
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.DefaultItemAnimator
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import androidx.recyclerview.widget.RecyclerView.NO_POSITION
 import kotlinx.android.synthetic.main.pdf_rendererview.view.*
+import kotlinx.coroutines.CoroutineScope
 import java.io.File
 import java.net.URLEncoder
 
@@ -63,7 +67,8 @@ class PdfRendererView @JvmOverloads constructor(
     fun initWithUrl(
         url: String,
         pdfQuality: PdfQuality = this.quality,
-        engine: PdfEngine = this.engine
+        engine: PdfEngine = this.engine,
+        lifecycleScope: LifecycleCoroutineScope = (context as AppCompatActivity).lifecycleScope
     ) {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP || engine == PdfEngine.GOOGLE) {
             initUnderKitkat(url)
@@ -93,6 +98,8 @@ class PdfRendererView @JvmOverloads constructor(
                 error.printStackTrace()
                 statusListener?.onError(error)
             }
+
+            override fun getCoroutineScope(): CoroutineScope = lifecycleScope
         })
     }
 
@@ -256,4 +263,4 @@ class PdfRendererView @JvmOverloads constructor(
             pdfRendererCore.closePdfRender()
     }
 
-}
\ No newline at end of file
+}