ساخت اپلیکیشن ضبط صدا با کاتلین (Kotlin) — به زبان ساده

1<?xml version="1.0" encoding="utf-8"?>
2<RelativeLayout
3        xmlns:android="http://schemas.android.com/apk/res/android"
4        xmlns:tools="http://schemas.android.com/tools"
5        android:layout_width="match_parent" android:layout_height="match_parent"
6        tools:context=".MainActivity">
7
8    <TextView
9            android:id="@+id/textview_sound_recorder_heading"
10            android:layout_width="wrap_content"
11            android:layout_height="wrap_content"
12            android:text="Sound Recorder"
13            android:layout_centerHorizontal="true"
14            android:textSize="32dp"
15            android:textStyle="bold"
16            android:textColor="#000"
17            android:layout_marginTop="32dp"
18    />
19
20    <Button
21            android:id="@+id/button_start_recording"
22            android:layout_width="wrap_content"
23            android:layout_height="wrap_content"
24            android:text="Start"
25            android:layout_alignParentBottom="true"
26            android:layout_marginLeft="32dp"
27            android:layout_marginBottom="32dp"
28            android:layout_centerVertical="true"/>
29
30    <Button
31            android:id="@+id/button_pause_recording"
32            android:layout_width="wrap_content"
33            android:layout_height="wrap_content"
34            android:text="Pause"
35            android:layout_alignParentBottom="true"
36            android:layout_centerHorizontal="true"
37            android:layout_marginBottom="32dp"/>
38
39    <Button
40            android:id="@+id/button_stop_recording"
41            android:layout_width="wrap_content"
42            android:layout_height="wrap_content"
43            android:text="Stop"
44            android:layout_alignParentBottom="true"
45            android:layout_alignParentRight="true"
46            android:layout_marginBottom="32dp"
47            android:layout_marginRight="32dp"/>
48</RelativeLayout>

1<uses-permission android:name="android.permission.RECORD_AUDIO"/>
2<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

1if (ContextCompat.checkSelfPermission(this,
2      Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED && ContextCompat.checkSelfPermission(this,
3      Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
4  val permissions = arrayOf(android.Manifest.permission.RECORD_AUDIO, android.Manifest.permission.WRITE_EXTERNAL_STORAGE, android.Manifest.permission.READ_EXTERNAL_STORAGE)
5  ActivityCompat.requestPermissions(this, permissions,0)
6}

1button_start_recording.setOnClickListener {
2    if (ContextCompat.checkSelfPermission(this,
3            Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED && ContextCompat.checkSelfPermission(this,
4            Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
5        val permissions = arrayOf(android.Manifest.permission.RECORD_AUDIO, android.Manifest.permission.WRITE_EXTERNAL_STORAGE, android.Manifest.permission.READ_EXTERNAL_STORAGE)
6        ActivityCompat.requestPermissions(this, permissions,0)
7    } else {
8        startRecording()
9    }
10}
11
12button_stop_recording.setOnClickListener{
13    stopRecording()
14}
15
16button_pause_recording.setOnClickListener {
17    pauseRecording()
18}

1private var output: String? = null
2private var mediaRecorder: MediaRecorder? = null
3private var state: Boolean = false
4private var recordingStopped: Boolean = false
5
6override fun onCreate(savedInstanceState: Bundle?) {
7    super.onCreate(savedInstanceState)
8    setContentView(R.layout.activity_main)
9
10    output = Environment.getExternalStorageDirectory().absolutePath + "/recording.mp3"
11    mediaRecorder = MediaRecorder()
12    
13    mediaRecorder?.setAudioSource(MediaRecorder.AudioSource.MIC)
14    mediaRecorder?.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4)
15    mediaRecorder?.setAudioEncoder(MediaRecorder.AudioEncoder.AAC)
16    mediaRecorder?.setOutputFile(output)
17}

1private fun startRecording() {
2    try {
3        mediaRecorder?.prepare()
4        mediaRecorder?.start()
5        state = true
6        Toast.makeText(this, "Recording started!", Toast.LENGTH_SHORT).show()
7    } catch (e: IllegalStateException) {
8        e.printStackTrace()
9    } catch (e: IOException) {
10        e.printStackTrace()
11    }
12}

1private fun stopRecording(){
2    if(state){
3        mediaRecorder?.stop()
4        mediaRecorder?.release()
5        state = false
6    }else{
7        Toast.makeText(this, "You are not recording right now!", Toast.LENGTH_SHORT).show()
8    }
9}

1@SuppressLint("RestrictedApi", "SetTextI18n")
2@TargetApi(Build.VERSION_CODES.N)
3private fun pauseRecording() {
4    if(state) {
5        if(!recordingStopped){
6            Toast.makeText(this,"Stopped!", Toast.LENGTH_SHORT).show()
7            mediaRecorder?.pause()
8            recordingStopped = true
9            button_pause_recording.text = "Resume"
10        }else{
11            resumeRecording()
12        }
13    }
14}
15
16@SuppressLint("RestrictedApi", "SetTextI18n")
17@TargetApi(Build.VERSION_CODES.N)
18private fun resumeRecording() {
19    Toast.makeText(this,"Resume!", Toast.LENGTH_SHORT).show()
20    mediaRecorder?.resume()
21    button_pause_recording.text = "Pause"
22    recordingStopped = false
23}

1package com.example.android.soundrecorder
2
3import android.Manifest
4import android.annotation.SuppressLint
5import android.annotation.TargetApi
6import android.content.pm.PackageManager
7import android.media.MediaRecorder
8import android.os.Build
9import android.support.v7.app.AppCompatActivity
10import android.os.Bundle
11import android.os.Environment
12import android.support.v4.app.ActivityCompat
13import android.support.v4.content.ContextCompat
14import android.widget.Toast
15import kotlinx.android.synthetic.main.activity_main.*
16import java.io.IOException
17
18class MainActivity : AppCompatActivity() {
19
20    private var output: String? = null
21    private var mediaRecorder: MediaRecorder? = null
22    private var state: Boolean = false
23    private var recordingStopped: Boolean = false
24
25    override fun onCreate(savedInstanceState: Bundle?) {
26        super.onCreate(savedInstanceState)
27        setContentView(R.layout.activity_main)
28
29        mediaRecorder = MediaRecorder()
30        output = Environment.getExternalStorageDirectory().absolutePath + "/recording.mp3"
31
32        mediaRecorder?.setAudioSource(MediaRecorder.AudioSource.MIC)
33        mediaRecorder?.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4)
34        mediaRecorder?.setAudioEncoder(MediaRecorder.AudioEncoder.AAC)
35        mediaRecorder?.setOutputFile(output)
36
37        button_start_recording.setOnClickListener {
38            if (ContextCompat.checkSelfPermission(this,
39                    Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED && ContextCompat.checkSelfPermission(this,
40                    Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
41                val permissions = arrayOf(android.Manifest.permission.RECORD_AUDIO, android.Manifest.permission.WRITE_EXTERNAL_STORAGE, android.Manifest.permission.READ_EXTERNAL_STORAGE)
42                ActivityCompat.requestPermissions(this, permissions,0)
43            } else {
44                startRecording()
45            }
46        }
47
48        button_stop_recording.setOnClickListener{
49            stopRecording()
50        }
51
52        button_pause_recording.setOnClickListener {
53            pauseRecording()
54        }
55    }
56
57    private fun startRecording() {
58        try {
59            mediaRecorder?.prepare()
60            mediaRecorder?.start()
61            state = true
62            Toast.makeText(this, "Recording started!", Toast.LENGTH_SHORT).show()
63        } catch (e: IllegalStateException) {
64            e.printStackTrace()
65        } catch (e: IOException) {
66            e.printStackTrace()
67        }
68    }
69
70    @SuppressLint("RestrictedApi", "SetTextI18n")
71    @TargetApi(Build.VERSION_CODES.N)
72    private fun pauseRecording() {
73        if(state) {
74            if(!recordingStopped){
75                Toast.makeText(this,"Stopped!", Toast.LENGTH_SHORT).show()
76                mediaRecorder?.pause()
77                recordingStopped = true
78                button_pause_recording.text = "Resume"
79            }else{
80                resumeRecording()
81            }
82        }
83    }
84
85    @SuppressLint("RestrictedApi", "SetTextI18n")
86    @TargetApi(Build.VERSION_CODES.N)
87    private fun resumeRecording() {
88        Toast.makeText(this,"Resume!", Toast.LENGTH_SHORT).show()
89        mediaRecorder?.resume()
90        button_pause_recording.text = "Pause"
91        recordingStopped = false
92    }
93
94    private fun stopRecording(){
95        if(state){
96            mediaRecorder?.stop()
97            mediaRecorder?.release()
98            state = false
99        }else{
100            Toast.makeText(this, "You are not recording right now!", Toast.LENGTH_SHORT).show()
101        }
102    }
103}