Hi!
As the title says, I need to be able to record an audio file in my mobile application.
I am using Ionic 6 / Capacitor / Angular.
Following the documentation it seemed something quite simple to achieve, until I started testing in android studio.
The plugin in question is the following (so I can use it in my app)
import {Media, MediaObject} from '@ionic-native/media/ngx';
The functions with which I handle the recording are:
//This is called by the button on the view
record(){
this.isRecording?this.stopRecord():this.startRecord()
this.isRecording = !this.isRecording
}
startRecord(){
this.fireAuth.fireauth.onAuthStateChanged((user) => {
if (user) {
let now = new Date();
console.log('Recording...')
this.newFile = this.media.create('file:///sdcard//Download/'+user.uid+'-'+this.formatDate(now)+'.mp3');
this.newFile.startRecord();
}else{
console.log('Error: No Auth')
}
})
}
stopRecord(){
console.log('Finished record!')
this.newFile.stopRecord();
this.newFile.release();
}
With this what I can get are basically errors in the Android Studio console 
when startRecord() is called
V/Capacitor/Plugin: To native (Cordova plugin): callbackId: INVALID, service: Media, action: create, actionArgs: ["28dcbcf9-4453-bb1b-8faf-74c13e4ec29c","file:\/\/\/sdcard\/\/Download\/xZpEzJ12P2dblXAxG7Wpo2J2xpf2-20210604010355.mp3"]
I/Capacitor/Console: File: http://localhost/tab1-tab1-module.js - Line 189 - Msg: Grabando
V/Capacitor/Plugin: To native (Cordova plugin): callbackId: INVALID, service: Media, action: startRecordingAudio, actionArgs: ["28dcbcf9-4453-bb1b-8faf-74c13e4ec29c","file:\/\/\/sdcard\/\/Download\/xZpEzJ12P2dblXAxG7Wpo2J2xpf2-20210604010355.mp3"]
W/System.err: java.io.FileNotFoundException: /storage/emulated/0/tmprecording-1622783035225.3gp: open failed: EPERM (Operation not permitted)
at libcore.io.IoBridge.open(IoBridge.java:492)
W/System.err: at java.io.RandomAccessFile.<init>(RandomAccessFile.java:289)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:152)
at android.media.MediaRecorder.prepare(MediaRecorder.java:1091)
at org.apache.cordova.media.AudioPlayer.startRecording(AudioPlayer.java:161)
at org.apache.cordova.media.AudioHandler.startRecordingAudio(AudioHandler.java:287)
at org.apache.cordova.media.AudioHandler.promptForRecord(AudioHandler.java:543)
at org.apache.cordova.media.AudioHandler.execute(AudioHandler.java:118)
at org.apache.cordova.CordovaPlugin.execute(CordovaPlugin.java:98)
at org.apache.cordova.PluginManager.exec(PluginManager.java:132)
at com.getcapacitor.MessageHandler.callCordovaPluginMethod(MessageHandler.java:107)
W/System.err: at com.getcapacitor.MessageHandler.postMessage(MessageHandler.java:51)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:335)
at android.os.Looper.loop(Looper.java:183)
at android.os.HandlerThread.run(HandlerThread.java:67)
Caused by: android.system.ErrnoException: open failed: EPERM (Operation not permitted)
at libcore.io.Linux.open(Native Method)
at libcore.io.ForwardingOs.open(ForwardingOs.java:166)
at libcore.io.BlockGuardOs.open(BlockGuardOs.java:254)
W/System.err: at libcore.io.ForwardingOs.open(ForwardingOs.java:166)
at android.app.ActivityThread$AndroidOs.open(ActivityThread.java:7542)
at libcore.io.IoBridge.open(IoBridge.java:478)
... 15 more
and, whe stopRecord() is called:
V/Capacitor/Plugin: To native (Cordova plugin): callbackId: INVALID, service: Media, action: stopRecordingAudio, actionArgs: ["28dcbcf9-4453-bb1b-8faf-74c13e4ec29c"]
I/Capacitor/Console: File: http://localhost/tab1-tab1-module.js - Line 199 - Msg: Grabacion terminada
E/AudioPlayer: /storage/emulated/0/tmprecording-1622783035225.3gp: open failed: ENOENT (No such file or directory)
java.io.FileNotFoundException: /storage/emulated/0/tmprecording-1622783035225.3gp: open failed: ENOENT (No such file or directory)
at libcore.io.IoBridge.open(IoBridge.java:492)
at java.io.FileInputStream.<init>(FileInputStream.java:160)
at org.apache.cordova.media.AudioPlayer.moveFile(AudioPlayer.java:216)
at org.apache.cordova.media.AudioPlayer.stopRecording(AudioPlayer.java:311)
at org.apache.cordova.media.AudioHandler.stopRecordingAudio(AudioHandler.java:298)
at org.apache.cordova.media.AudioHandler.execute(AudioHandler.java:121)
at org.apache.cordova.CordovaPlugin.execute(CordovaPlugin.java:98)
at org.apache.cordova.PluginManager.exec(PluginManager.java:132)
at com.getcapacitor.MessageHandler.callCordovaPluginMethod(MessageHandler.java:107)
at com.getcapacitor.MessageHandler.postMessage(MessageHandler.java:51)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:335)
at android.os.Looper.loop(Looper.java:183)
at android.os.HandlerThread.run(HandlerThread.java:67)
Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)
at libcore.io.Linux.open(Native Method)
at libcore.io.ForwardingOs.open(ForwardingOs.java:166)
at libcore.io.BlockGuardOs.open(BlockGuardOs.java:254)
at libcore.io.ForwardingOs.open(ForwardingOs.java:166)
at android.app.ActivityThread$AndroidOs.open(ActivityThread.java:7542)
at libcore.io.IoBridge.open(IoBridge.java:478)
at java.io.FileInputStream.<init>(FileInputStream.java:160)
at org.apache.cordova.media.AudioPlayer.moveFile(AudioPlayer.java:216)
at org.apache.cordova.media.AudioPlayer.stopRecording(AudioPlayer.java:311)
at org.apache.cordova.media.AudioHandler.stopRecordingAudio(AudioHandler.java:298)
at org.apache.cordova.media.AudioHandler.execute(AudioHandler.java:121)
at org.apache.cordova.CordovaPlugin.execute(CordovaPlugin.java:98)
at org.apache.cordova.PluginManager.exec(PluginManager.java:132)
at com.getcapacitor.MessageHandler.callCordovaPluginMethod(MessageHandler.java:107)
at com.getcapacitor.MessageHandler.postMessage(MessageHandler.java:51)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:335)
at android.os.Looper.loop(Looper.java:183)
at android.os.HandlerThread.run(HandlerThread.java:67)
V/Capacitor/Plugin: To native (Cordova plugin): callbackId: INVALID, service: Media, action: release, actionArgs: ["28dcbcf9-4453-bb1b-8faf-74c13e4ec29c"]
…and this creates a file in the directory, but it is a 0 byte audio file that cannot be opened.
I have read quite a few solutions, like:
but no one has served me, they all give me that damn error “callback: INVALID” and an audio file that cannot be opened with 0 bytes !!
Can anybody help me? I am desperate to find a solution to this problem 
Thanks in advance to everyone u.u
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