implementing recording renaming

app/src/main/kotlin/com/simplemobiletools/voicerecorder/adapters/RecordingsAdapter.kt

@@ -13,6 +13,7 @@ import com.simplemobiletools.commons.views.FastScroller
 import com.simplemobiletools.commons.views.MyRecyclerView
 import com.simplemobiletools.voicerecorder.R
 import com.simplemobiletools.voicerecorder.activities.SimpleActivity
+import com.simplemobiletools.voicerecorder.dialogs.RenameRecordingDialog
 import com.simplemobiletools.voicerecorder.models.Recording
 import kotlinx.android.synthetic.main.item_recording.view.*
 import java.util.*
@@ -60,17 +61,22 @@ class RecordingsAdapter(activity: SimpleActivity, var recordings: ArrayList<Reco
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = createViewHolder(R.layout.item_recording, parent)
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val group = recordings[position]
-        holder.bindView(group, true, true) { itemView, layoutPosition ->
-            setupView(itemView, group)
+        val recording = recordings[position]
+        holder.bindView(recording, true, true) { itemView, layoutPosition ->
+            setupView(itemView, recording)
         }
         bindViewHolder(holder)
     }
 
     override fun getItemCount() = recordings.size
 
-    private fun renameRecording() {
+    private fun getItemWithKey(key: Int): Recording? = recordings.firstOrNull { it.id == key }
 
+    private fun renameRecording() {
+        val recording = getItemWithKey(selectedKeys.first()) ?: return
+        RenameRecordingDialog(activity, recording) {
+            finishActMode()
+        }
     }
 
     private fun askConfirmDelete() {

app/src/main/kotlin/com/simplemobiletools/voicerecorder/dialogs/RenameRecordingDialog.kt

@@ -0,0 +1,66 @@
+package com.simplemobiletools.voicerecorder.dialogs
+
+import android.content.ContentUris
+import android.content.ContentValues
+import android.provider.MediaStore
+import androidx.appcompat.app.AlertDialog
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.ensureBackgroundThread
+import com.simplemobiletools.commons.helpers.isQPlus
+import com.simplemobiletools.voicerecorder.R
+import com.simplemobiletools.voicerecorder.models.Recording
+import kotlinx.android.synthetic.main.dialog_rename_recording.view.*
+
+class RenameRecordingDialog(val activity: BaseSimpleActivity, val recording: Recording, val callback: () -> Unit) {
+    init {
+        val view = activity.layoutInflater.inflate(R.layout.dialog_rename_recording, null).apply {
+            rename_recording_title.setText(recording.title.substringBeforeLast('.'))
+        }
+
+        AlertDialog.Builder(activity)
+            .setPositiveButton(R.string.ok, null)
+            .setNegativeButton(R.string.cancel, null)
+            .create().apply {
+                activity.setupDialogStuff(view, this, R.string.rename) {
+                    showKeyboard(view.rename_recording_title)
+                    getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
+                        val newTitle = view.rename_recording_title.value
+                        if (newTitle.isEmpty()) {
+                            activity.toast(R.string.empty_name)
+                            return@setOnClickListener
+                        }
+
+                        if (!newTitle.isAValidFilename()) {
+                            activity.toast(R.string.invalid_name)
+                            return@setOnClickListener
+                        }
+
+                        ensureBackgroundThread {
+                            if (isQPlus()) {
+                                updateMediaStoreTitle(recording, newTitle)
+                            }
+
+                            activity.runOnUiThread {
+                                callback()
+                                dismiss()
+                            }
+                        }
+                    }
+                }
+            }
+    }
+
+    private fun updateMediaStoreTitle(recording: Recording, newTitle: String) {
+        val uri = ContentUris.withAppendedId(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, recording.id.toLong())
+        val oldExtension = recording.title.getFilenameExtension()
+        val newDisplayName = "${newTitle.removeSuffix(".$oldExtension")}.$oldExtension"
+
+        val values = ContentValues().apply {
+            put(MediaStore.Audio.Media.TITLE, newTitle.substringAfterLast('.'))
+            put(MediaStore.Audio.Media.DISPLAY_NAME, newDisplayName)
+        }
+
+        activity.contentResolver.update(uri, values, null, null)
+    }
+}

app/src/main/res/layout/dialog_rename_recording.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/rename_recording_holder"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="@dimen/activity_margin">
+
+    <com.simplemobiletools.commons.views.MyEditText
+        android:id="@+id/rename_recording_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:singleLine="true"
+        android:textCursorDrawable="@null"
+        android:textSize="@dimen/normal_text_size" />
+
+</LinearLayout>