添加权限
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.RECORD_AUDIO" />
xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="music.RecordActivity"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <Button android:layout_width="wrap_content" android:layout_height="match_parent" android:id="@+id/bt_back" android:text="返回" ></Button> <Button android:layout_width="wrap_content" android:layout_height="match_parent" android:paddingLeft="30dp" android:id="@+id/bt_save" android:text="确定" ></Button> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_centerInParent="true" android:gravity="center" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="5dp" android:gravity="center" android:orientation="horizontal"> <ImageView android:id="@+id/iv_record_wave_left" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_margin="5dp" android:background="@xml/record_wave_left" /> <ImageView android:id="@+id/iv_microphone" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_margin="5dp" android:src="@drawable/record_microphone_icon" /> <ImageView android:id="@+id/iv_record_wave_right" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_margin="5dp" android:background="@xml/record_wave_right" /> </LinearLayout> <TextView android:id="@+id/tv_recordTime" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="5dp" android:gravity="center" android:text="00:00:00" android:textColor="#499df7" android:textSize="20sp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="45dp" android:background="@drawable/navigationbar_bg" android:layout_alignParentBottom="true" android:gravity="center" > <Button android:id="@+id/btn_record" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/tabbar_record_start" /> </LinearLayout> </RelativeLayout>
package music; import androidx.annotation.RequiresApi; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent; import android.graphics.drawable.AnimationDrawable; import android.icu.text.SimpleDateFormat; import android.media.MediaPlayer; import android.media.MediaRecorder; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.view.View; import android.view.Window; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import com.example.myapp_b.R; import java.io.File; import java.io.IOException; import java.util.Date; import java.util.Timer; import java.util.TimerTask; public class RecordActivity extends AppCompatActivity { private Button btn_record; private ImageView iv_microphone; private TextView tv_recordTime; private ImageView iv_record_wave_left,iv_record_wave_right; private AnimationDrawable ad_left,ad_right; private int isRecording = 0; private int isPlaying = 0; private Timer mTimer; //语音操作对象 private MediaPlayer mPlayer = null; private MediaRecorder mRecorder = null; //语音保存路径 private String FilePath = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_record); Button btn_save = (Button)findViewById(R.id.bt_save); btn_save.setOnClickListener((View.OnClickListener) new ClickEvent()); Button btn_back = (Button)findViewById(R.id.bt_back); btn_back.setOnClickListener((View.OnClickListener) new ClickEvent()); btn_record = (Button)findViewById(R.id.btn_record); btn_record.setOnClickListener((View.OnClickListener) new ClickEvent()); iv_microphone = (ImageView)findViewById(R.id.iv_microphone); iv_microphone.setOnClickListener((View.OnClickListener) new ClickEvent()); iv_record_wave_left = (ImageView)findViewById(R.id.iv_record_wave_left); iv_record_wave_right = (ImageView)findViewById(R.id.iv_record_wave_right); ad_left = (AnimationDrawable)iv_record_wave_left.getBackground(); //ad_left = (AnimationDrawable)iv_record_wave_left.getDrawable(); ad_right = (AnimationDrawable)iv_record_wave_right.getBackground(); //ad_right = (AnimationDrawable)iv_record_wave_right.getDrawable(); tv_recordTime = (TextView)findViewById(R.id.tv_recordTime); } final Handler handler = new Handler(){ public void handleMessage(Message msg) { switch(msg.what){ case 1 : String time[] = tv_recordTime.getText().toString().split(":"); int hour = Integer.parseInt(time[0]); int minute = Integer.parseInt(time[1]); int second = Integer.parseInt(time[2]); if(second < 59){ second++; } else if(second == 59 && minute < 59){ minute++; second = 0; } if(second == 59 && minute == 59 && hour < 98){ hour++; minute = 0; second = 0; } time[0] = hour + ""; time[1] = minute + ""; time[2] = second + ""; //调整格式显示到屏幕上 if(second < 10) time[2] = "0" + second; if(minute < 10) time[1] = "0" + minute; if(hour < 10) time[0] = "0" + hour; //显示在TextView中 tv_recordTime.setText(time[0]+":"+time[1]+":"+time[2]); break; } } }; class ClickEvent implements View.OnClickListener { @RequiresApi(api = Build.VERSION_CODES.N) @Override public void onClick(View v) { switch(v.getId()){ //点击的是开始录音按钮 case R.id.btn_record : //开始录音 if(isRecording == 0){ //每一次调用录音，可以录音多次，至多满意为至，最后只将最后一次的录音文件保存，其他的删除 if(FilePath != null){ File oldFile = new File(FilePath); oldFile.delete(); } //获得系统当前时间，并以该时间作为文件名 SimpleDateFormat formatter = new SimpleDateFormat ("yyyyMMddHHmmss"); Date curDate = new Date(System.currentTimeMillis());//获取当前时间 String str = formatter.format(curDate); str = str + "record.amr"; File dir = new File("/sdcard/notes/"); File file = new File("/sdcard/notes/",str); if (!dir.exists()) { dir.mkdir(); } else{ if(file.exists()){ file.delete(); } } FilePath = dir.getPath() +"/"+ str; //计时器 mTimer = new Timer(); //将麦克图标设置成不可点击， iv_microphone.setClickable(false); //将显示的时间设置为00:00:00 tv_recordTime.setText("00:00:00"); //将按钮换成停止录音 isRecording = 1; btn_record.setBackgroundResource(R.drawable.tabbar_record_stop); mRecorder = new MediaRecorder(); mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); mRecorder.setOutputFile(FilePath); mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); try { mRecorder.prepare(); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } mRecorder.start(); mTimer.schedule(new TimerTask() { @Override public void run() { Message message = new Message(); message.what = 1; handler.sendMessage(message); } },1000, 1000); //播放动画 ad_left.start(); ad_right.start(); } //停止录音 else{ //将按钮换成开始录音 isRecording = 0; btn_record.setBackgroundResource(R.drawable.tabbar_record_start); mRecorder.stop(); mTimer.cancel(); mTimer = null; mRecorder.release(); mRecorder = null; //将麦克图标设置成可点击， iv_microphone.setClickable(true); //停止动画 ad_left.stop(); ad_right.stop(); Toast.makeText(RecordActivity.this, "单击麦克图标试听，再次点击结束试听", Toast.LENGTH_LONG).show(); } break; //如果单击的是麦克图标，则可以是进入试听模式，再次点击，停止播放 case R.id.iv_microphone : if(FilePath == null) Toast.makeText(RecordActivity.this, "没有录音广播可以播放，请先录音", Toast.LENGTH_LONG).show(); else{ //试听 if(isPlaying == 0){ isPlaying = 1; mPlayer = new MediaPlayer(); tv_recordTime.setText("00:00:00"); mTimer = new Timer(); mPlayer.setOnCompletionListener((MediaPlayer.OnCompletionListener) new MediaCompletion()); try { mPlayer.setDataSource(FilePath); mPlayer.prepare(); mPlayer.start(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (SecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalStateException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } mTimer.schedule(new TimerTask() { @Override public void run() { Message message = new Message(); message.what = 1; handler.sendMessage(message); } }, 1000,1000); //播放动画 ad_left.start(); ad_right.start(); } //结束试听 else{ isPlaying = 0; mPlayer.stop(); mPlayer.release(); mPlayer = null; mTimer.cancel(); mTimer = null; //停止动画 ad_left.stop(); ad_right.stop(); } } break; //点击确定按钮 case R.id.bt_save : //将最终的录音文件的路径返回 Intent intent = getIntent(); Bundle b = new Bundle(); b.putString("audio", FilePath); System.out.println(FilePath); intent.putExtras(b); setResult(RESULT_OK, intent); // RecordActivity.this.finish(); break; case R.id.bt_back : //返回前将录音的文件删除 if(FilePath != null){ File oldFile = new File(FilePath); oldFile.delete(); } // ActivityRecord.this.finish(); break; } } } class MediaCompletion implements MediaPlayer.OnCompletionListener { @Override public void onCompletion(MediaPlayer mp) { mTimer.cancel(); mTimer = null; isPlaying = 0; //停止动画 ad_left.stop(); ad_right.stop(); Toast.makeText(RecordActivity.this, "播放完毕", Toast.LENGTH_LONG).show(); tv_recordTime.setText("00:00:00"); } } }
