Android编程检测手机录音权限是否打开的方法

Boolean flag = (PackageManager.PERMISSION_GRANTED ==pm.checkPermission("android.permission.RECORD_AUDIO", "包名"));Boolean flag = PermissionChecker.checkSelfPermission(this, Manifest.permission.)== PermissionChecker.PERMISSION_GRANTED;if (flag){  ToastUtil.showMessage("有权限");} else {  ToastUtil.showMessage("无权限");  return;}

public class CheckPermissionUtils {  /**  *获取app的录音权限是否打开  *android 6.0version以上 传统方法不适合 以此兼容  * @param context  */  public static Boolean isHasAudioRecordPermission(Context context) {    // 音频获取源    int audioSource = MediaRecorder.AudioSource.MIC;    // 设置音频采样率，44100是目前的标准，但是某些设备仍然支持22050，16000，11025    int sampleRateInHz = 44100;    // 设置音频的录制的声道CHANNEL_IN_STEREO为双声道，CHANNEL_CONFIGURATION_MONO为单声道    int channelConfig = AudioFormat.CHANNEL_IN_STEREO;    // 音频数据格式:PCM 16位每个样本。保证设备支持。PCM 8位每个样本。不一定能得到设备支持。    int audioFormat = AudioFormat.ENCODING_PCM_16BIT;    // 缓冲区字节大小    int bufferSizeInBytes = 0;    bufferSizeInBytes = AudioRecord.getMinBufferSize(sampleRateInHz,            channelConfig, audioFormat);    AudioRecord audioRecord = new AudioRecord(audioSource, sampleRateInHz,            channelConfig, audioFormat, bufferSizeInBytes);    //开始录制音频    try{      // 防止某些手机崩溃，例如联想      audioRecord.startRecording();    }    catch (IllegalStateException e){      e.printStackTrace();    }    /**     * 根据开始录音判断是否有录音权限     */    if (audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {      return false;    }    audioRecord.stop();    audioRecord.release();    audioRecord = null;    return true;  }}

public class CheckPermissionUtils {  private static final String TAG = "CheckPermissionUtils";  private static CheckPermissionUtils checkPermissionUtils = new CheckPermissionUtils();  static final int SAMPLE_RATE_IN_HZ = 44100;  static final int BUFFER_SIZE = AudioRecord.getMinBufferSize(  SAMPLE_RATE_IN_HZ, AudioFormat.CHANNEL_IN_DEFAULT,  AudioFormat.ENCODING_PCM_16BIT);  private AudioRecord mAudioRecord;  Boolean isGetVoiceRun;  private Object mLock;  private int count=0;  private Boolean isHasPermission;  private CheckPermissionUtils() {    mLock = new Object();  }  public static CheckPermissionUtils getinstance() {    if (checkPermissionUtils == null) {      checkPermissionUtils = new CheckPermissionUtils();    }    return checkPermissionUtils;  }  public Boolean isHasAudioRecordingPermission(Context context) {    isHasPermission=false;    count=0;    mAudioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC,            SAMPLE_RATE_IN_HZ, AudioFormat.CHANNEL_IN_DEFAULT,            AudioFormat.ENCODING_PCM_16BIT, BUFFER_SIZE);    if (mAudioRecord == null) {      Log.e("sound", "mAudioRecord初始化失败");    }    isGetVoiceRun = true;    try {      //    new Thread(new Runnable() {      //      @Override      //      public void run() {      mAudioRecord.startRecording();      short[] buffer = new short[BUFFER_SIZE];      while (isGetVoiceRun) {        count++;        if (count++>10) {          isGetVoiceRun=false;        }        //r是实际读取的数据长度，一般而言r会小于buffersize        int r = mAudioRecord.read(buffer, 0, BUFFER_SIZE);        long v = 0;        // 将 buffer 内容取出，进行平方和运算        for (int i = 0; i < buffer.length; i++) {          v += buffer[i] * buffer[i];        }        // 平方和除以数据总长度，得到音量大小。        double mean = v / (double) r;        double volume = 10 * Math.log10(mean);        Log.d(TAG, "-------分贝值:" +volume+"----v"+v+"------r"+r );        if (v>0&&r>0) {          //有录音          isHasPermission=true;          return isHasPermission;        }        // 大概一秒十次        synchronized (mLock) {          try {            mLock.wait(5);          }          catch (InterruptedException e) {            e.printStackTrace();          }        }      }      mAudioRecord.stop();      mAudioRecord.release();      mAudioRecord = null;      //  }      //}).start();    }    catch (Exception e) {    }    return isHasPermission;  }}