Fix files from SD card not being deleted (#48)

app/src/main/java/io/github/muntashirakon/music/activities/saf/SAFRequestActivity.kt

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2021 Bartlomiej Uliasz.
+ *
+ * Licensed under the GNU General Public License v3
+ *
+ * This is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by
+ *  the Free Software Foundation either version 3 of the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ */
+package io.github.muntashirakon.music.activities.saf
+
+import android.app.Activity
+import android.content.Intent
+import android.os.Bundle
+import io.github.muntashirakon.music.activities.saf.SAFGuideActivity.REQUEST_CODE_SAF_GUIDE
+import io.github.muntashirakon.music.util.SAFUtil
+
+/** Created by buliasz on 2021-02-07.  */
+class SAFRequestActivity : Activity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val intent = Intent(this, SAFGuideActivity::class.java)
+        startActivityForResult(intent, REQUEST_CODE_SAF_GUIDE)
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, intent: Intent?) {
+        super.onActivityResult(requestCode, resultCode, intent)
+        when (requestCode) {
+            REQUEST_CODE_SAF_GUIDE -> {
+                SAFUtil.openTreePicker(this)
+            }
+            SAFUtil.REQUEST_SAF_PICK_TREE -> {
+                if (resultCode == RESULT_OK) {
+                    SAFUtil.saveTreeUri(this, intent)
+                }
+                finish()
+            }
+        }
+    }
+}