AudioRecorder, 녹음 기능

녹음을 하기 위해서는 권한을 등록해줘야함

 

 

AndroidManifest.xml 권한 추가

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

 

 

activity_main.xml

    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent">


        <Button
            android:id="@+id/button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:layout_alignParentEnd="true"
            android:layout_marginStart="162dp"
            android:layout_marginTop="190dp"
            android:layout_marginEnd="161dp"
            android:text="재생" />

        <Button
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:layout_alignParentEnd="true"
            android:layout_marginStart="162dp"
            android:layout_marginTop="300dp"
            android:layout_marginEnd="161dp"
            android:text="일시정지" />

        <Button
            android:id="@+id/button3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentStart="true"
            android:layout_alignParentEnd="true"
            android:layout_alignParentBottom="true"
            android:layout_marginStart="166dp"
            android:layout_marginEnd="157dp"
            android:layout_marginBottom="284dp"
            android:text="재시작" />

        <Button
            android:id="@+id/button4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentStart="true"
            android:layout_alignParentEnd="true"
            android:layout_alignParentBottom="true"
            android:layout_marginStart="162dp"
            android:layout_marginEnd="161dp"
            android:layout_marginBottom="186dp"
            android:text="중지" />

        <Button
            android:id="@+id/button5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:layout_alignParentEnd="true"
            android:layout_marginStart="0dp"
            android:layout_marginTop="0dp"
            android:layout_marginEnd="323dp"
            android:text="녹음시작" />

        <Button
            android:id="@+id/button6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_alignParentEnd="true"
            android:layout_marginTop="53dp"
            android:layout_marginEnd="323dp"
            android:text="녹음중지" />

    </RelativeLayout>

 

 

MainActivity.java

    import android.media.MediaPlayer;
    import android.media.MediaRecorder;
    import android.os.Environment;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.View;
    import android.widget.Button;
    import android.widget.Toast;

    import java.io.File;

    public class MainActivity extends AppCompatActivity {

        MediaRecorder recorder;
        String filename;

        MediaPlayer player;
        int position = 0;
        int count = 0;//나중에는 카운트로 하지말고 시리얼번호로 바꿔서 해주면 됨

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);

    //        File sdcard = Environment.getExternalStorageDirectory();//sd카드 참조
    //        File file = new File(sdcard, "recorded.mp4");
    //        filename = file.getAbsolutePath();
            Log.d("MainActivity", "저장할 파일명 : " + filename);

            Button button = (Button)findViewById(R.id.button);
            button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    playAudio();
                }
            });

            Button button2 = (Button)findViewById(R.id.button2);
            button2.setOnClickListener(new View.OnClickListener(){
                @Override
                public void onClick(View v){
                    pauseAudio();
                }
            });

            Button button3 = (Button)findViewById(R.id.button3);
            button3.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    resumeAudio();
                }
            });

            Button button4 = (Button)findViewById(R.id.button4);
            button4.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    stopAudio();
                }
            });

            Button button5 = (Button)findViewById(R.id.button5);
            button5.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    count++;
                    File sdcard = Environment.getExternalStorageDirectory();//sd카드 참조
                    File file = new File(sdcard, "recorded.mp4");//이제 알겠어 이름을 바꿔주면 새로 생성
                    filename = file.getAbsolutePath();
                    recordAudio();
                }
            });

            Button button6 = (Button)findViewById(R.id.button6);
            button6.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    stopRecording();
                }
            });
        }

        public void recordAudio() {
            recorder = new MediaRecorder();

            recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
            recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
            recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);

            recorder.setOutputFile(filename);

            try {
                recorder.prepare();
                recorder.start();

                Toast.makeText(this, "녹음 시작됨.", Toast.LENGTH_LONG).show();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        public void stopRecording(){
            if(recorder != null){
                recorder.stop();
                recorder.release();
                recorder = null;

                Toast.makeText(this, "녹음 중지됨.", Toast.LENGTH_LONG).show();

            }
        }

        public void playAudio(){
            try {
                closePlayer();

                player = new MediaPlayer();
            // player.setDataSource(url);
                player.setDataSource(filename);
                player.prepare();
                player.start();

                Toast.makeText(this, "재생 시작됨.", Toast.LENGTH_LONG).show();
            }catch(Exception e){
                e.printStackTrace();
            }
        }

        public void pauseAudio(){
            if(player != null){
                position = player.getCurrentPosition();
                player.pause();

                Toast.makeText(this, "일시정지됨.", Toast.LENGTH_LONG).show();
            }
        }

        public void resumeAudio(){
            if(player != null && !player.isPlaying()){
                player.seekTo(position);
                player.start();

                Toast.makeText(this, "재시작됨.", Toast.LENGTH_LONG).show();
            }
        }

        public void stopAudio(){
            if(player != null && player.isPlaying()){
                player.stop();

                Toast.makeText(this, "중지됨.", Toast.LENGTH_LONG).show();
            }
        }

        public void closePlayer(){
            if(player != null){
                player.release();
                player = null;
            }
        }
    }