我的应用程序的记录音频权限被用户禁止。问题是一些android os设备`audio_recorder.getRecordingState()`总是返回`AudioRecord.RECORDSTATE_RECORDING`。这不是正确的结果。< / p>
我如何知道录制音频权限是否可用?
public final class MtAudioRecord {
private static final String TAG = "audioRecord";
private static MtAudioRecord instance = null;
public static int SAMPLE_RATE = 44100;// default 44100
public static final int CHANNEL_CONFIG = AudioFormat.CHANNEL_IN_MONO;
public static final int AUDIO_FORMAT = AudioFormat.ENCODING_PCM_16BIT;
public static final int AUDIO_SOURCE = MediaRecorder.AudioSource.MIC;
private AudioRecord mAudioRecord;
private final int minBufferSize;
private boolean isRecording = true;
private static short[] audioData = null;
public static final MtAudioRecord getInstance() {
if (null == instance) {
instance = new MtAudioRecord();
}
return instance;
}
public MtAudioRecord() {
minBufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE, CHANNEL_CONFIG, AUDIO_FORMAT);
if (minBufferSize == AudioRecord.ERROR_BAD_VALUE) {
} else if (minBufferSize == AudioRecord.ERROR) {
} else {
mAudioRecord =
new AudioRecord(AudioSource.MIC, SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO,
AudioFormat.ENCODING_PCM_16BIT, minBufferSize);
}
audioData = new short[minBufferSize];
}
public synchronized void start() {
new Thread(new Runnable() {
@Override
public void run() {
if(null != mAudioRecord){
if (mAudioRecord.getRecordingState() != AudioRecord.STATE_INITIALIZED) {
Log.e(TAG, "Mic didn't successfully initialized");
return;
}
mAudioRecord.startRecording();
Log.e(TAG, "recording state = " + mAudioRecord.getRecordingState());
if (mAudioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
Log.e(TAG, "Mic is in use and can't be accessed");
return;
}
isRecording = true;
while (isRecording && null != mAudioRecord) {
if (null == audioData) {
audioData = new short[minBufferSize];
}
final int read_distance = mAudioRecord.read(audioData, 0, minBufferSize);
if (read_distance == AudioRecord.ERROR_INVALID_OPERATION || read_distance == AudioRecord.ERROR || read_distance == AudioRecord.ERROR_BAD_VALUE) {
isRecording = false;
break;
}
}
if (mAudioRecord != null) {
mAudioRecord.stop();
mAudioRecord.release();
mAudioRecord = null;
}
}
}
}).start();
}
public synchronized void stop() {
isRecording = false;
}
}
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
答案 0 :(得分:1)
我认为您应该使用AudioManager
代替。这有助于您检查用户是否将麦克风静音。您可能正在搜索的方法是isMicrophoneMute()
,它返回布尔值。
以下是android开发者网站中AudioManager的链接。 Android Audio Manager
,功能说明为here
你的吐司不正确,应该是:
Toast.makeText(applicationContext(),"The microphone is
disabled",Toast.LENGTH_SHORT).show();
<强>更新强>
你可以使用Context.checkCallingOrSelfPermission(String permission);
permission是描述所需权限的字符串:android.permission.RECORD_AUDIO
它应该返回整数结果,即PERMISSION_GRANTED或PERMISSION_DENIED
在这里查看android开发者网站中的说明:check permission
例如:
public boolean checkRecordingPermission()
{
String permission = "android.permission.RECORD_AUDIO";
int result = getContext().checkCallingOrSelfPermission(permission);
return (result == PackageManager.PERMISSION_GRANTED);
}