AccessibilityService with MediaRecorder 30 sec audio in Android Q(10) while call receive (Answer) 无法
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【中文标题】AccessibilityService with MediaRecorder 30 sec audio in Android Q(10) while call receive (Answer) 无法工作【英文标题】：AccessibilityService with MediaRecorder 30 sec audio in Android Q(10) while call receive (Answer) could not work 【发布时间】：2020-09-16 06:12:54 【问题描述】：这里参考developer site& call recording android 10 尝试录制音频文件并将其保存到其本地目录路径，我使用 AccessibilityService 来实现它在 Android Q (10) 中的录制声音服务代码如下所示
MyService.java
package nisarg.app.demo;
import android.accessibilityservice.AccessibilityButtonController;
import android.accessibilityservice.AccessibilityService;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.annotation.SuppressLint;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.media.AudioDeviceInfo;
import android.media.AudioManager;
import android.media.MediaRecorder;
import android.os.Build;
import android.os.Handler;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.Log;
import android.view.WindowManager;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;
import java.io.IOException;
import androidx.core.app.NotificationCompat;
import static android.media.AudioManager.ADJUST_RAISE;
import static nisarg.app.demo.MainActivity.fileName;
public class MyService extends AccessibilityService
private AccessibilityButtonController accessibilityButtonController;
private AccessibilityButtonController
.AccessibilityButtonCallback accessibilityButtonCallback;
private boolean mIsAccessibilityButtonAvailable;
public static final String LOG_TAG_S = "MyService 1 :";
WindowManager windowManager;
@SuppressLint("RtlHardcoded")
@Override
public void onCreate()
super.onCreate();
windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
Log.d(LOG_TAG_S,"MyService");
try
startForegroundService();
catch (Exception e)
e.printStackTrace();
@Override
public void onAccessibilityEvent(AccessibilityEvent event)
Log.d(LOG_TAG_S, "Event :"+event.getEventType());
AccessibilityNodeInfo interactedNodeInfo =
event.getSource();
if (interactedNodeInfo.getText().equals("Increase volume"))
mAudioManager.adjustStreamVolume(AudioManager.STREAM_ACCESSIBILITY,
ADJUST_RAISE, 0);
@Override
public void onInterrupt()
@Override
protected void onServiceConnected()
System.out.println("onServiceConnected");
Log.d(LOG_TAG_S, " ===:" + "onServiceConnected");
AccessibilityServiceInfo info = new AccessibilityServiceInfo();
info.eventTypes = AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED;
info.eventTypes = AccessibilityEvent.TYPES_ALL_MASK;
info.feedbackType = AccessibilityServiceInfo.FEEDBACK_ALL_MASK;
info.notificationTimeout = 100;
info.packageNames = null;
setServiceInfo(info);
if (isAccessibilitySettingsOn(MyService.this))
Log.d(LOG_TAG_S, "ACCESSIBILIY IS Activated");
startRecording();
new Handler().postDelayed(new Runnable()
@Override
public void run()
// This method will be executed once the timer is over
stopRecording();
, 30000);
else
Log.d(LOG_TAG_S, "ACCESSIBILIY IS DISABLED");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
accessibilityButtonController = getAccessibilityButtonController();
mIsAccessibilityButtonAvailable =
accessibilityButtonController.isAccessibilityButtonAvailable();
if (!mIsAccessibilityButtonAvailable)
return;
AccessibilityServiceInfo serviceInfo = getServiceInfo();
serviceInfo.flags |= AccessibilityServiceInfo.FLAG_REQUEST_ACCESSIBILITY_BUTTON;
setServiceInfo(serviceInfo);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
accessibilityButtonCallback = new AccessibilityButtonController.AccessibilityButtonCallback()
@Override
public void onClicked(AccessibilityButtonController controller)
Log.d("MY_APP_TAG", "Accessibility button pressed!");
// Add custom logic for a service to react to the
// accessibility button being pressed.
@Override
public void onAvailabilityChanged(
AccessibilityButtonController controller, boolean available)
if (controller.equals(accessibilityButtonController))
mIsAccessibilityButtonAvailable = available;
;
if (accessibilityButtonCallback != null)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
accessibilityButtonController.registerAccessibilityButtonCallback(
accessibilityButtonCallback, null);
public static final String CHANNEL_ID = "MyAccessibilityService";
private void startForegroundService()
createNotificationChannel();
Intent notificationIntent = new Intent(this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this,0, notificationIntent, 0);
Notification notification = new NotificationCompat.Builder(this, CHANNEL_ID)
.setContentTitle("recording Service")
.setContentText("Start")
.setSmallIcon(R.drawable.ic_launcher_background)
.setContentIntent(pendingIntent)
.build();
startForeground(1, notification);
private void createNotificationChannel()
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
NotificationChannel serviceChannel = new NotificationChannel(
CHANNEL_ID,
"Recording Service Channel",
NotificationManager.IMPORTANCE_DEFAULT
);
NotificationManager manager = getSystemService(NotificationManager.class);
manager.createNotificationChannel(serviceChannel);
//=================================================Added code start==========
MediaRecorder mRecorder;
private boolean isStarted;
byte buffer[] = new byte[8916];
AudioManager mAudioManager;
public void startRecording()
try
mRecorder = new MediaRecorder();
mRecorder.reset();
//android.permission.MODIFY_AUDIO_SETTINGS
mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
//turn on speaker
if (mAudioManager != null)
mAudioManager.setMode(AudioManager.MODE_IN_CALL); //MODE_IN_COMMUNICATION | MODE_IN_CALL
// mAudioManager.setSpeakerphoneOn(true);
// mAudioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL, mAudioManager.getStreamMaxVolume(AudioManager.STREAM_VOICE_CALL), 0); // increase Volume
hasWiredHeadset(mAudioManager);
//android.permission.RECORD_AUDIO
String manufacturer = Build.MANUFACTURER;
Log.d(LOG_TAG_S, manufacturer);
/* if (manufacturer.toLowerCase().contains("samsung"))
mRecorder.setAudiosource(MediaRecorder.AudioSource.VOICE_COMMUNICATION);
else
mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL);
*/
/*
VOICE_CALL is the actual call data being sent in a call, up and down (so your side and their side). VOICE_COMMUNICATION is just the microphone, but with codecs and echo cancellation turned on for good voice quality.
*/
mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL); //MIC | VOICE_COMMUNICATION (Android 10 release) | VOICE_RECOGNITION | (VOICE_CALL = VOICE_UPLINK + VOICE_DOWNLINK)
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); //THREE_GPP | MPEG_4
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); //AMR_NB | AAC
mRecorder.setOutputFile(fileName);
mRecorder.prepare();
mRecorder.start();
isStarted = true;
catch (IOException e)
e.printStackTrace();
public void stopRecording()
if (isStarted && mRecorder != null)
mRecorder.stop();
mRecorder.reset(); // You can reuse the object by going back to setAudioSource() step
mRecorder.release();
mRecorder = null;
isStarted = false;
stopSelf();
// To detect the connected other device like headphone, wifi headphone, usb headphone etc
private boolean hasWiredHeadset(AudioManager mAudioManager)
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M)
return mAudioManager.isWiredHeadsetOn();
else
final AudioDeviceInfo[] devices = mAudioManager.getDevices(AudioManager.GET_DEVICES_ALL);
for (AudioDeviceInfo device : devices)
final int type = device.getType();
if (type == AudioDeviceInfo.TYPE_WIRED_HEADSET)
Log.d(LOG_TAG_S, "hasWiredHeadset: found wired headset");
return true;
else if (type == AudioDeviceInfo.TYPE_USB_DEVICE)
Log.d(LOG_TAG_S, "hasWiredHeadset: found USB audio device");
return true;
else if (type == AudioDeviceInfo.TYPE_TELEPHONY)
Log.d(LOG_TAG_S, "hasWiredHeadset: found audio signals over the telephony network");
return true;
return false;
//=================================End================================
public static boolean isAccessibilitySettingsOn(Context mContext)
int accessibilityEnabled = 0;
//your package / accesibility service path/class
// final String service = "com.example.sotsys_014.accessibilityexample/com.accessibilityexample.Service.MyAccessibilityService";
final String service = "nisarg.app.demo/nisarg.app.demo.MyService";
boolean accessibilityFound = false;
try
accessibilityEnabled = Settings.Secure.getInt(
mContext.getApplicationContext().getContentResolver(),
Settings.Secure.ACCESSIBILITY_ENABLED);
Log.d(LOG_TAG_S, "accessibilityEnabled = " + accessibilityEnabled);
catch (Settings.SettingNotFoundException e)
Log.d(LOG_TAG_S, "Error finding setting, default accessibility to not found: "
+ e.getMessage());
TextUtils.SimpleStringSplitter mStringColonSplitter = new TextUtils.SimpleStringSplitter(':');
if (accessibilityEnabled == 1)
Log.d(LOG_TAG_S, "***ACCESSIBILIY IS ENABLED*** -----------------");
String settingValue = Settings.Secure.getString(
mContext.getApplicationContext().getContentResolver(),
Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES);
if (settingValue != null)
TextUtils.SimpleStringSplitter splitter = mStringColonSplitter;
splitter.setString(settingValue);
while (splitter.hasNext())
String accessabilityService = splitter.next();
Log.d(LOG_TAG_S, "-------------- > accessabilityService :: " + accessabilityService);
if (accessabilityService.equalsIgnoreCase(service))
Log.d(LOG_TAG_S, "We've found the correct setting - accessibility is switched on!");
return true;
else
Log.d(LOG_TAG_S, "***ACCESSIBILIY IS DISABLED***");
return accessibilityFound;
--
这项服务开始像
正常录音时工作正常，但是当来电并尝试录制通话音频时，它无法录制音频。
AndroidMenifest.xml
<uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission>
<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
<service
android:name="nisarg.app.demo.MyService"
android:label="@string/app_name"
android:enabled="true"
android:exported="true"
android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
<intent-filter>
<action android:name="android.accessibilityservice.AccessibilityService" />
</intent-filter>
<meta-data android:name="android.accessibilityservice" android:resource="@xml/accessibility_service_config" />
</service>
在 XML 文件夹中
accessibility_service_config.xml
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
android:description="@string/accessibility_service_description"
android:packageNames="nisarg.app.demo"
android:accessibilityEventTypes="typeAllMask"
android:accessibilityFlags="flagDefault"
android:accessibilityFeedbackType="feedbackSpoken"
android:notificationTimeout="100"
android:canRetrieveWindowContent="true"
android:settingsActivity="com.example.android.accessibility.ServiceSettingsActivity"
/>
【问题讨论】：
【参考方案1】：我已经解决了如下，
package nisarg.app.demo;
import android.accessibilityservice.AccessibilityService;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.annotation.SuppressLint;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.media.AudioDeviceInfo;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.os.Build;
import android.os.Handler;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.view.accessibility.AccessibilityEvent;
import android.widget.FrameLayout;
import android.widget.ImageView;
import java.io.IOException;
import androidx.core.app.NotificationCompat;
import static nisarg.app.demo.MainActivity.fileName;
import static nisarg.app.demo.MainActivity.player;
import static nisarg.app.demo.MainActivity.recorder;
public class MyService extends AccessibilityService
public static final String LOG_TAG_S = "MyService:";
WindowManager windowManager;
// ImageView back,home,notification,minimize;
//WindowManager.LayoutParams params;
// AccessibilityService service;
@SuppressLint("RtlHardcoded")
@Override
public void onCreate()
super.onCreate();
windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
Log.i("start Myservice","MyService");
startForegroundService();
/*if (!Settings.canDrawOverlays(getApplicationContext()))
Intent intent = new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS,
Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, 1);
*/
/* back = new ImageView(this);
home = new ImageView(this);
minimize = new ImageView(this);
notification = new ImageView(this);
back.setImageResource(R.drawable.ic_launcher_background);
home.setImageResource(R.drawable.ic_launcher_background);
minimize.setImageResource(R.drawable.ic_launcher_background);
notification.setImageResource(R.drawable.ic_launcher_background);
*/
/* params= new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT);
params.gravity = Gravity.CENTER_VERTICAL|Gravity.RIGHT;
params.x = 10;
params.y = 50;
windowManager.addView(home, params);
params= new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT);
params.gravity = Gravity.CENTER_VERTICAL|Gravity.RIGHT;
params.x = 10;
params.y = 100;
windowManager.addView(minimize, params);
params= new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT);
params.gravity = Gravity.CENTER_VERTICAL|Gravity.RIGHT;
params.x = 10;
params.y = 150;
windowManager.addView(notification, params);
back.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
try
performGlobalAction(AccessibilityService.GLOBAL_ACTION_BACK);
catch (Exception e)
e.printStackTrace();
);
home.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
try
performGlobalAction(AccessibilityService.GLOBAL_ACTION_HOME);
catch (Exception e)
e.printStackTrace();
);
notification.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
try
performGlobalAction(AccessibilityService.GLOBAL_ACTION_NOTIFICATIONS);
catch (Exception e)
e.printStackTrace();
);
minimize.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
try
performGlobalAction(AccessibilityService.GLOBAL_ACTION_RECENTS);
catch (Exception e)
e.printStackTrace();
);
*/
@Override
public void onAccessibilityEvent(AccessibilityEvent event)
Log.e(LOG_TAG_S, "Event :"+event.getEventType());
@Override
public void onInterrupt()
/* @Override
protected void onServiceConnected()
super.onServiceConnected();
Log.d("TAG", "onServiceConnected");
*/
/* @Override
public void onServiceConnected()
// Set the type of events that this service wants to listen to. Others
// won't be passed to this service.
info.eventTypes = AccessibilityEvent.TYPE_VIEW_CLICKED |
AccessibilityEvent.TYPE_VIEW_FOCUSED;
// If you only want this service to work with specific applications, set their
// package names here. Otherwise, when the service is activated, it will listen
// to events from all applications.
info.packageNames = new String[]
"nisarg.app.demo";
// Set the type of feedback your service will provide.
info.feedbackType = AccessibilityServiceInfo.FEEDBACK_SPOKEN;
// Default services are invoked only if no package-specific ones are present
// for the type of AccessibilityEvent generated. This service *is*
// application-specific, so the flag isn't necessary. If this was a
// general-purpose service, it would be worth considering setting the
// DEFAULT flag.
// info.flags = AccessibilityServiceInfo.DEFAULT;
info.notificationTimeout = 100;
this.setServiceInfo(info);
*/
@Override
protected void onServiceConnected()
System.out.println("onServiceConnected");
//==============================Record Audio while Call received===============//
WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
FrameLayout layout = new FrameLayout(this);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(WindowManager.LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.TYPE_ACCESSIBILITY_OVERLAY,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE| WindowManager.LayoutParams.FLAG_FULLSCREEN |
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE|
WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS|
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.TOP;
windowManager.addView(layout, params);
layout.setOnTouchListener(new View.OnTouchListener()
@Override
public boolean onTouch(View v, MotionEvent event)
//You can either get the information here or on onAccessibilityEvent
Log.e(LOG_TAG_S, "Window view touched........:");
Log.e(LOG_TAG_S, "Window view touched........:");
return true;
);
//==============To Record Audio wile Call received=================
AccessibilityServiceInfo info = new AccessibilityServiceInfo();
info.eventTypes = AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED;
info.eventTypes=AccessibilityEvent.TYPES_ALL_MASK;
info.feedbackType = AccessibilityServiceInfo.FEEDBACK_ALL_MASK;
info.notificationTimeout = 100;
info.packageNames = null;
setServiceInfo(info);
try
//startRecording();
startRecordingA();
catch (Exception e)
e.printStackTrace();
new Handler().postDelayed(new Runnable()
@Override
public void run()
// This method will be executed once the timer is over
//stopRecording();
stopRecordingA();
, 30000);
private void startPlaying()
player = new MediaPlayer();
try
player.setDataSource(fileName);
player.prepare();
player.start();
catch (IOException e)
Log.e(LOG_TAG_S, "prepare() failed");
private void stopPlaying()
player.release();
player = null;
private void startRecordingA()
recorder = new MediaRecorder();
// This must be needed sourcea
recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_RECOGNITION);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setOutputFile(fileName);
//recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN)
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.HE_AAC);
recorder.setAudioEncodingBitRate(48000);
else
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
recorder.setAudioEncodingBitRate(64000);
recorder.setAudioSamplingRate(16000);
try
recorder.prepare();
catch (IOException e)
Log.e(LOG_TAG_S, "prepare() failed");
recorder.start();
private void stopRecordingA()
Log.e(LOG_TAG_S, "stop recording");
recorder.stop();
recorder.release();
recorder = null;
public static final String CHANNEL_ID = "MyAccessibilityService";
private void startForegroundService()
createNotificationChannel();
Intent notificationIntent = new Intent(this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
Notification notification = new NotificationCompat.Builder(this, CHANNEL_ID)
.setContentTitle("recording Service")
.setContentText("Start")
.setSmallIcon(R.drawable.ic_launcher_background)
.setContentIntent(pendingIntent)
.build();
startForeground(1, notification);
private void createNotificationChannel()
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
NotificationChannel serviceChannel = new NotificationChannel(
CHANNEL_ID,
"Recording Service Channel",
NotificationManager.IMPORTANCE_DEFAULT
);
NotificationManager manager = getSystemService(NotificationManager.class);
manager.createNotificationChannel(serviceChannel);
//=================================================Added code start==========
MediaRecorder mRecorder;
private boolean isStarted;
byte buffer[] = new byte[8916];
public void startRecording()
try
/* String timestamp = new SimpleDateFormat("dd-MM-yyyy-hh-mm-ss", Locale.US).format(new Date());
String fileName =timestamp+".3gp";
mediaSaver = new MediaSaver(context).setParentDirectoryName("Accessibility").
setFileNameKeepOriginalExtension(fileName).
setExternal(MediaSaver.isExternalStorageReadable());*/
//String selectedPath = Environment.getExternalStorageDirectory() + "/Testing";
//String selectedPath = Environment.getExternalStorageDirectory().getAbsolutePath() +"/Android/data/" + packageName + "/system_sound";
mRecorder = new MediaRecorder();
// mRecorder.reset();
//android.permission.MODIFY_AUDIO_SETTINGS
AudioManager mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
//turn on speaker
if (mAudioManager != null)
mAudioManager.setMode(AudioManager.MODE_IN_COMMUNICATION); //MODE_IN_COMMUNICATION | MODE_IN_CALL
// mAudioManager.setSpeakerphoneOn(true);
// mAudioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL, mAudioManager.getStreamMaxVolume(AudioManager.STREAM_VOICE_CALL), 0); // increase Volume
hasWiredHeadset(mAudioManager);
//android.permission.RECORD_AUDIO
String manufacturer = Build.MANUFACTURER;
Log.d(LOG_TAG_S, manufacturer);
/* if (manufacturer.toLowerCase().contains("samsung"))
mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_COMMUNICATION);
else
mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL);
*/
/*
VOICE_CALL is the actual call data being sent in a call, up and down (so your side and their side). VOICE_COMMUNICATION is just the microphone, but with codecs and echo cancellation turned on for good voice quality.
*/
mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_RECOGNITION); //MIC | VOICE_COMMUNICATION (Android 10 release) | VOICE_RECOGNITION | (VOICE_CALL = VOICE_UPLINK + VOICE_DOWNLINK)
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); //THREE_GPP | MPEG_4
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); //AMR_NB | AAC
mRecorder.setOutputFile(fileName);
mRecorder.prepare();
mRecorder.start();
isStarted = true;
catch (IOException e)
e.printStackTrace();
public void stopRecording()
if (isStarted && mRecorder != null)
mRecorder.stop();
mRecorder.reset(); // You can reuse the object by going back to setAudioSource() step
mRecorder.release();
mRecorder = null;
isStarted = false;
// To detect the connected other device like headphone, wifi headphone, usb headphone etc
private boolean hasWiredHeadset(AudioManager mAudioManager)
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M)
return mAudioManager.isWiredHeadsetOn();
else
final AudioDeviceInfo[] devices = mAudioManager.getDevices(AudioManager.GET_DEVICES_ALL);
for (AudioDeviceInfo device : devices)
final int type = device.getType();
if (type == AudioDeviceInfo.TYPE_WIRED_HEADSET)
Log.d(LOG_TAG_S, "hasWiredHeadset: found wired headset");
return true;
else if (type == AudioDeviceInfo.TYPE_USB_DEVICE)
Log.d(LOG_TAG_S, "hasWiredHeadset: found USB audio device");
return true;
else if (type == AudioDeviceInfo.TYPE_TELEPHONY)
Log.d(LOG_TAG_S, "hasWiredHeadset: found audio signals over the telephony network");
return true;
return false;
//=================================End================================
public static boolean isAccessibilitySettingsOn(Context mContext)
int accessibilityEnabled = 0;
//your package / accesibility service path/class
//
// final String service = "com.example.sotsys_014.accessibilityexample/com.accessibilityexample.Service.MyAccessibilityService";
final String service = "nisarg.app.demo/nisarg.app.demo.MyService";
boolean accessibilityFound = false;
try
accessibilityEnabled = Settings.Secure.getInt(
mContext.getApplicationContext().getContentResolver(),
android.provider.Settings.Secure.ACCESSIBILITY_ENABLED);
Log.v(LOG_TAG_S, "accessibilityEnabled = " + accessibilityEnabled);
catch (Settings.SettingNotFoundException e)
Log.e(LOG_TAG_S, "Error finding setting, default accessibility to not found: "
+ e.getMessage());
TextUtils.SimpleStringSplitter mStringColonSplitter = new TextUtils.SimpleStringSplitter(':');
if (accessibilityEnabled == 1)
Log.v(LOG_TAG_S, "***ACCESSIBILIY IS ENABLED*** -----------------");
String settingValue = Settings.Secure.getString(
mContext.getApplicationContext().getContentResolver(),
Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES);
if (settingValue != null)
TextUtils.SimpleStringSplitter splitter = mStringColonSplitter;
splitter.setString(settingValue);
while (splitter.hasNext())
String accessabilityService = splitter.next();
Log.v(LOG_TAG_S, "-------------- > accessabilityService :: " + accessabilityService);
if (accessabilityService.equalsIgnoreCase(service))
Log.v(LOG_TAG_S, "We've found the correct setting - accessibility is switched on!");
return true;
else
Log.v(LOG_TAG_S, "***ACCESSIBILIY IS DISABLED***");
return accessibilityFound;
【讨论】：
我已经在 Q 上录制过，但不是在它工作的所有设备上。你知道吗？ 我想在活动中单击任何特定按钮时调用 stopRecordingA();。我该怎么做？？以上是关于AccessibilityService with MediaRecorder 30 sec audio in Android Q(10) while call receive (Answer) 无法的主要内容，如果未能解决你的问题，请参考以下文章
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