Android实时录制音频为Mp3格式

package com.example.wang.audiorecordermp3; import android.Manifest; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.content.pm.PackageManager; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.Settings; import android.support.annotation.NonNull; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.view.KeyEvent; import android.view.View; import android.widget.Button; import android.widget.Toast; import com.buihha.audiorecorder.Mp3Recorder; import com.example.wang.audiorecordermp3.util.FileUtils; import java.io.IOException; public class MainActivity extends AppCompatActivity implements Mp3Recorder.RecorderListener { Mp3Recorder mp3Recorder; private String path = Environment.getExternalStorageDirectory() + "/AudioRecorderMp3/recorder/"; String[] permiss = new String[]{Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO}; int REQUEST_CODE = 1002; String filePath; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if(!checkMyPermission(permiss)){ ActivityCompat.requestPermissions(this,permiss,REQUEST_CODE); } findViewById(R.id.start).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { try { if(mp3Recorder == null){ filePath = path + FileUtils.getFileNameByTime() + ".mp3"; mp3Recorder = new Mp3Recorder(filePath); mp3Recorder.setListener(MainActivity.this); } if(mp3Recorder.isRecording()){ mp3Recorder.pasueRecording(); ((Button)v).setText("Start Recorder"); Toast.makeText(MainActivity.this,"暂停录音!",Toast.LENGTH_SHORT).show(); }else{ mp3Recorder.startRecording(); ((Button)v).setText("Pasue Recorder"); Toast.makeText(MainActivity.this,"开始录音!",Toast.LENGTH_SHORT).show(); } } catch (IOException e) { e.printStackTrace(); } } }); findViewById(R.id.stop).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { try { if (mp3Recorder == null) { Toast.makeText(MainActivity.this,"您还未开始录音呢!",Toast.LENGTH_SHORT).show(); } else { mp3Recorder.stopRecording(); Toast.makeText(MainActivity.this,"结束录音!",Toast.LENGTH_SHORT).show(); ((Button)findViewById(R.id.start)).setText("Start Recorder"); mp3Recorder = null; } } catch (IOException e) { e.printStackTrace(); } } }); } private boolean checkMyPermission(String[] permiss){ if(permiss !=null && permiss.length > 0 ){ for(String per : permiss) { if (ContextCompat.checkSelfPermission(this,per) != PackageManager.PERMISSION_GRANTED){ return false; } } } return true; } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults){ if (requestCode == REQUEST_CODE) { boolean isAllGranted = true; // 判断是否所有的权限都已经授予了 for (int grant : grantResults) { if (grant != PackageManager.PERMISSION_GRANTED) { isAllGranted = false; break; } } if (isAllGranted) { } else { // 弹出对话框告诉用户需要权限的原因, 并引导用户去应用权限管理中手动打开权限按钮 openAppDetails(); } } } /** * 打开 APP 的详情设置 */ private void openAppDetails() { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage("录音需要访问 “外部存储器”，请到 “应用信息 -> 权限” 中授予！"); builder.setPositiveButton("去手动授权", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Intent intent = new Intent(); intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS); intent.addCategory(Intent.CATEGORY_DEFAULT); intent.setData(Uri.parse("package:" + getPackageName())); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY); intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); startActivity(intent); } }); builder.setNegativeButton("取消", null); builder.show(); } /** * 完成录制触发的函数,可进行文件上传操作 */ @Override public void stop() { Toast.makeText(MainActivity.this,"录音文件保存完毕,文件保存在:" + filePath,Toast.LENGTH_SHORT).show(); } @Override protected void onDestroy() { super.onDestroy(); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if(keyCode == KeyEvent.KEYCODE_BACK) { if (mp3Recorder != null && mp3Recorder.isRecording()) { new AlertDialog.Builder(this).setTitle("提示").setMessage("正在录音中，是否保存正在录制的音频?").setPositiveButton("是", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { try { mp3Recorder.stopRecording(); Toast.makeText(MainActivity.this, "结束录音!", Toast.LENGTH_SHORT).show(); mp3Recorder = null; } catch (IOException e) { e.printStackTrace(); } MainActivity.this.finish(); System.exit(0); } }).setNegativeButton("否", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { try { mp3Recorder.stopRecording(); Toast.makeText(MainActivity.this, "结束录音!", Toast.LENGTH_SHORT).show(); mp3Recorder = null; FileUtils.deleteFile(filePath); } catch (IOException e) { e.printStackTrace(); } MainActivity.this.finish(); System.exit(0); } }).create().show(); } return false; } return super.onKeyDown(keyCode, event); } }