1 files changed, 65 insertions, 0 deletions
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/utils/FileUtils.kt b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/utils/FileUtils.kt
new file mode 100644
index 0000000000..26f2a2c56b
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/utils/FileUtils.kt
@@ -0,0 +1,65 @@
+package com.mapbox.mapboxsdk.testapp.utils
+
+import android.content.Context
+import android.os.AsyncTask
+import java.io.File
+import java.io.FileOutputStream
+import java.lang.ref.WeakReference
+
+class FileUtils {
+
+  /**
+   * Task that copies a file from the assets directory to a provided directory.
+   * The asset's name is going to be kept in the new directory.
+   */
+  class CopyFileFromAssetsTask(context: Context, listener: OnFileCopiedFromAssetsListener) : AsyncTask<String, Void, Boolean>() {
+    private val contextWeakReference: WeakReference<Context> = WeakReference(context)
+    private val listenerWeakReference: WeakReference<OnFileCopiedFromAssetsListener> = WeakReference(listener)
+
+    override fun doInBackground(vararg strings: String): Boolean? {
+      val assetName = strings[0]
+      val destinationPath = strings[1]
+
+      contextWeakReference.get()?.let {
+        try {
+          copyAsset(it, assetName, destinationPath)
+        } catch (ex: Exception) {
+          return false
+        }
+      }
+
+      return true
+    }
+
+    override fun onCancelled() {
+      listenerWeakReference.get()?.onError()
+    }
+
+    override fun onPostExecute(result: Boolean) {
+      if (result) {
+        listenerWeakReference.get()?.onFileCopiedFromAssets()
+      } else {
+        listenerWeakReference.get()?.onError()
+      }
+    }
+
+    private fun copyAsset(context: Context, assetName: String, destinationPath: String) {
+      val bufferSize = 1024
+      val assetManager = context.assets
+      val inputStream = assetManager.open(assetName)
+      val outputStream = FileOutputStream(File(destinationPath, assetName))
+      try {
+        inputStream.copyTo(outputStream, bufferSize)
+      } finally {
+        inputStream.close()
+        outputStream.flush()
+        outputStream.close()
+      }
+    }
+  }
+
+  interface OnFileCopiedFromAssetsListener {
+    fun onFileCopiedFromAssets()
+    fun onError()
+  }
+}
+\ No newline at end of file