add created files in MediaStore

app/src/main/kotlin/com/simplemobiletools/voicerecorder/activities/MainActivity.kt

@@ -1,13 +1,16 @@
 package com.simplemobiletools.voicerecorder.activities
 
+import android.content.ContentValues
 import android.content.Intent
 import android.graphics.drawable.Drawable
 import android.media.MediaRecorder
 import android.os.Bundle
+import android.provider.MediaStore
 import android.view.Menu
 import android.view.MenuItem
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.PERMISSION_RECORD_AUDIO
+import com.simplemobiletools.commons.helpers.ensureBackgroundThread
 import com.simplemobiletools.commons.models.FAQItem
 import com.simplemobiletools.voicerecorder.BuildConfig
 import com.simplemobiletools.voicerecorder.R
@@ -17,6 +20,7 @@ import java.io.IOException
 class MainActivity : SimpleActivity() {
     private var isRecording = false
     private var recorder: MediaRecorder? = null
+    private var currFilePath = ""
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -81,13 +85,14 @@ class MainActivity : SimpleActivity() {
         }
     }
 
+    // mp4 output format with aac encoding should produce good enough mp3 files according to https://stackoverflow.com/a/33054794/1967672
     private fun startRecording() {
-        val filename = "${getCurrentFormattedDateTime()}.3gp"
+        currFilePath = "${cacheDir}/${getCurrentFormattedDateTime()}.mp3"
         recorder = MediaRecorder().apply {
             setAudioSource(MediaRecorder.AudioSource.CAMCORDER)
-            setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP)
+            setOutputFormat(MediaRecorder.OutputFormat.MPEG_4)
-            setOutputFile(filename)
+            setAudioEncoder(MediaRecorder.AudioEncoder.AAC)
-            setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB)
+            setOutputFile(currFilePath)
 
             try {
                 prepare()
@@ -103,10 +108,36 @@ class MainActivity : SimpleActivity() {
         recorder?.apply {
             stop()
             release()
+            ensureBackgroundThread {
+                addFileInMediaStore()
+            }
         }
         recorder = null
     }
 
+    private fun addFileInMediaStore() {
+        val resolver = applicationContext.contentResolver
+
+        val audioCollection = MediaStore.Audio.Media.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY)
+
+        val storeFilename = currFilePath.getFilenameFromPath()
+        val newSongDetails = ContentValues().apply {
+            put(MediaStore.Audio.Media.DISPLAY_NAME, storeFilename)
+            put(MediaStore.Audio.Media.TITLE, storeFilename)
+            put(MediaStore.Audio.Media.MIME_TYPE, storeFilename.getMimeType())
+        }
+
+        val newUri = resolver.insert(audioCollection, newSongDetails)
+        if (newUri == null) {
+            toast(R.string.unknown_error_occurred)
+            return
+        }
+
+        val outputStream = contentResolver.openOutputStream(newUri)
+        val inputStream = getFileInputStreamSync(currFilePath)
+        inputStream!!.copyTo(outputStream!!, DEFAULT_BUFFER_SIZE)
+    }
+
     private fun getToggleButtonIcon(): Drawable {
         val drawable = if (isRecording) R.drawable.ic_stop_vector else R.drawable.ic_mic_vector
         return resources.getColoredDrawableWithColor(drawable, getFABIconColor())