【移动应用开发技术】Android中怎么检测手机录音权限是否打开

【移动应用开发技术】Android中怎么检测手机录音权限是否打开

Android中怎么检测手机录音权限是否打开，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。具体如下：6.0之前的权限检测只是检测到是否在清单文件中注册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;

}在6.0系统一下无论是关闭或者打开app的录音权限都能获取到权限，6.0以上则正常，后来发现是6.0以后google加强了权限管理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;

}

}最后一种，测试没问题。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();