CheckPermission.java
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package com.cjt2325.cameralibrary.util;
import android.hardware.Camera;
import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.util.Log;
/**
* =====================================
* 作 者: 陈嘉桐
* 版 本：1.1.4
* 创建日期：2017/6/8
* 描 述：
* =====================================
*/
public class CheckPermission {
public static final int STATE_RECORDING = -1;
public static final int STATE_NO_PERMISSION = -2;
public static final int STATE_SUCCESS = 1;
/**
* 用于检测是否具有录音权限
*
* @return
*/
public static int getRecordState() {
int minBuffer = AudioRecord.getMinBufferSize(44100, AudioFormat.CHANNEL_IN_MONO, AudioFormat
.ENCODING_PCM_16BIT);
AudioRecord audioRecord = new AudioRecord(MediaRecorder.AudioSource.DEFAULT, 44100, AudioFormat
.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, (minBuffer * 100));
short[] point = new short[minBuffer];
int readSize = 0;
try {
audioRecord.startRecording();//检测是否可以进入初始化状态
} catch (Exception e) {
if (audioRecord != null) {
audioRecord.release();
audioRecord = null;
}
return STATE_NO_PERMISSION;
}
if (audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
//6.0以下机型都会返回此状态，故使用时需要判断bulid版本
//检测是否在录音中
if (audioRecord != null) {
audioRecord.stop();
audioRecord.release();
audioRecord = null;
Log.d("CheckAudioPermission", "录音机被占用");
}
return STATE_RECORDING;
} else {
//检测是否可以获取录音结果
readSize = audioRecord.read(point, 0, point.length);
if (readSize <= 0) {
if (audioRecord != null) {
audioRecord.stop();
audioRecord.release();
audioRecord = null;
}
Log.d("CheckAudioPermission", "录音的结果为空");
return STATE_NO_PERMISSION;
} else {
if (audioRecord != null) {
audioRecord.stop();
audioRecord.release();
audioRecord = null;
}
return STATE_SUCCESS;
}
}
}
public synchronized static boolean isCameraUseable(int cameraID) {
boolean canUse = true;
Camera mCamera = null;
try {
mCamera = Camera.open(cameraID);
// setParameters 是针对魅族MX5。MX5通过Camera.open()拿到的Camera对象不为null
Camera.Parameters mParameters = mCamera.getParameters();
mCamera.setParameters(mParameters);
} catch (Exception e) {
e.printStackTrace();
canUse = false;
} finally {
if (mCamera != null) {
mCamera.release();
} else {
canUse = false;
}
mCamera = null;
}
return canUse;
}
}