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public static synchronized boolean isVoicePermission() {
AudioRecord record = null;
try {
record = new AudioRecord(MediaRecorder.AudioSource.MIC, 22050,
AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT,
AudioRecord.getMinBufferSize(22050,
AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT));
record.startRecording();
int recordingState = record.getRecordingState();
if (recordingState == AudioRecord.RECORDSTATE_STOPPED) {
return false;
}
//第一次 为true时，先释放资源，在进行一次判定
//************
record.release();
record = new AudioRecord(MediaRecorder.AudioSource.MIC, 22050,
AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT,
AudioRecord.getMinBufferSize(22050,
AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT));
record.startRecording();
int recordingState1 = record.getRecordingState();
if (recordingState1 == AudioRecord.RECORDSTATE_STOPPED) {
}
//**************
//如果两次都是true， 就返回true 原因未知
return true;
} catch (Exception e) {
return false;
} finally {
if (record != null) {
record.release();
}
}
} |
只判定一次的话 ，一般第一次拒绝 会得到true，表示有权限，但是再次获取 就会为false，不知道什么原理
据说是判定有没有被占用，表示疑问