前言
最近混合开发的项目 在做语音识别时 h5拿不到麦克风的权限
几经周折 开发任务又落到了原生开发这里
先写一个demo实现录音和播放功能 然后由web端同事调用交互方法
实现效果
代码实现
public class MainActivity extends AppCompatActivity {
private static final String LOG_TAG = "MainActivity";
//语音文件保存路径
private String FileName = null;
//界面控件
private Button startRecord;
private Button startPlay;
private Button stopRecord;
private Button stopPlay;
//语音操作对象
private MediaPlayer mPlayer = null;
private MediaRecorder mRecorder = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
requestPermission();//请求麦克风权限
//开始录音
startRecord = findViewById(R.id.startRecord);
//绑定监听器
startRecord.setOnClickListener(new startRecordListener());
//结束录音
stopRecord = findViewById(R.id.stopRecord);
stopRecord.setOnClickListener(new stopRecordListener());
//开始播放
startPlay = findViewById(R.id.startPlay);
//绑定监听器
startPlay.setOnClickListener(new startPlayListener());
//结束播放
stopPlay = findViewById(R.id.stopPlay);
stopPlay.setOnClickListener(new stopPlayListener());
//设置sdcard的路径
FileName = Environment.getExternalStorageDirectory().getAbsolutePath();
FileName += "/test.mp3";
}
private void requestPermission() {
PermissionGen.with(this)
.addRequestCode(100)
.permissions(Manifest.permission.RECORD_AUDIO,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.WAKE_LOCK)
.request();
}
//开始录音
class startRecordListener implements View.OnClickListener {
@Override
public void onClick(View v) {
mRecorder = new MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mRecorder.setOutputFile(FileName);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
try {
mRecorder.prepare();
mRecorder.start();
} catch (IOException e) {
Log.e(LOG_TAG, "prepare() failed ---" + e.getMessage());
}
}
}
//停止录音
class stopRecordListener implements View.OnClickListener {
@Override
public void onClick(View v) {
mRecorder.stop();
mRecorder.release();
mRecorder = null;
}
}
//播放录音
class startPlayListener implements View.OnClickListener {
@Override
public void onClick(View v) {
mPlayer = new MediaPlayer();
try {
mPlayer.setDataSource(FileName);
mPlayer.prepare();
mPlayer.start();
} catch (IOException e) {
Log.e(LOG_TAG, "播放失败");
}
}
}
//停止播放录音
class stopPlayListener implements View.OnClickListener {
@Override
public void onClick(View v) {
mPlayer.release();
mPlayer = null;
}
}
}
XML
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/startRecord"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="100dp"
android:text="开始录音"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/stopRecord"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="结束录音"
app:layout_constraintBottom_toTopOf="@id/startPlay"
app:layout_constraintTop_toBottomOf="@id/startRecord" />
<Button
android:id="@+id/startPlay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="开始播放"
app:layout_constraintBottom_toTopOf="@id/stopPlay"
app:layout_constraintTop_toBottomOf="@id/stopRecord" />
<Button
android:id="@+id/stopPlay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="结束播放"
app:layout_constraintTop_toBottomOf="@id/startPlay" />
</androidx.constraintlayout.widget.ConstraintLayout>
静态权限
<!--录音和写磁盘权限-->
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
动态权限
PermissionGen.with(this)
.addRequestCode(100)
.permissions(Manifest.permission.RECORD_AUDIO,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.WAKE_LOCK)
.request();
总结
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