学步园

提要：需求是开发类似微信发语音的功能，没有语音转文字。网上看了一些代码，不能拿来直接用，部分代码逻辑有问题，所以想把自己的代码贴出来，仅供参考。

功能：

a、设置最大录音时长和录音倒计时（为了方便测试，最大时长设置为15秒，开始倒计时设置为7秒）

b、在录音之前检查录音和存储权限

源码：

1、录音对话框管理类DialogManager：

/** * 功能：录音对话框管理类 */public class DialogManager { private AlertDialog.Builder builder; private AlertDialog dialog; private ImageView mIcon; private ImageView mVoice; private TextView mLabel; private Context context; /** * 构造方法 * * @param context Activity级别的Context */ public DialogManager(Context context) { this.context = context; } /** * 显示录音的对话框 */ public void showRecordingDialog() { builder = new AlertDialog.Builder(context, R.style.AudioRecorderDialogStyle); LayoutInflater inflater = LayoutInflater.from(context); View view = inflater.inflate(R.layout.audio_recorder_dialog, null); mIcon = view.findViewById(R.id.iv_dialog_icon); mVoice = view.findViewById(R.id.iv_dialog_voice); mLabel = view.findViewById(R.id.tv_dialog_label); builder.setView(view); dialog = builder.create(); dialog.show(); dialog.setCanceledOnTouchOutside(false); } /** * 正在播放时的状态 */ public void recording() { if (dialog != null && dialog.isShowing()) { //显示状态 mIcon.setVisibility(View.VISIBLE); mVoice.setVisibility(View.VISIBLE); mLabel.setVisibility(View.VISIBLE); mIcon.setImageResource(R.drawable.ic_audio_recorder); mVoice.setImageResource(R.drawable.ic_audio_v1); mLabel.setText(R.string.audio_record_dialog_up_to_cancel); } } /** * 显示想取消的对话框 */ public void wantToCancel() { if (dialog != null && dialog.isShowing()) { //显示状态 mIcon.setVisibility(View.VISIBLE); mVoice.setVisibility(View.GONE); mLabel.setVisibility(View.VISIBLE); mIcon.setImageResource(R.drawable.ic_audio_cancel); mLabel.setText(R.string.audio_record_dialog_release_to_cancel); } } /** * 显示时间过短的对话框 */ public void tooShort() { if (dialog != null && dialog.isShowing()) { //显示状态 mIcon.setVisibility(View.VISIBLE); mVoice.setVisibility(View.GONE); mLabel.setVisibility(View.VISIBLE); mLabel.setText(R.string.audio_record_dialog_too_short); } } // 显示取消的对话框 public void dismissDialog() { if (dialog != null && dialog.isShowing()) { //显示状态 dialog.dismiss(); dialog = null; } } /** * 显示更新音量级别的对话框 * * @param level 1-7 */ public void updateVoiceLevel(int level) { if (dialog != null && dialog.isShowing()) { //显示状态 mIcon.setVisibility(View.VISIBLE); mVoice.setVisibility(View.VISIBLE); mLabel.setVisibility(View.VISIBLE); int resId = context.getResources().getIdentifier("ic_audio_v" + level, "drawable", context.getPackageName()); mVoice.setImageResource(resId); } } public void updateTime(int time) { if (dialog != null && dialog.isShowing()) { //显示状态 mIcon.setVisibility(View.VISIBLE); mVoice.setVisibility(View.VISIBLE); mLabel.setVisibility(View.VISIBLE); mLabel.setText(time + "s"); } }}

2、录音管理类AudioManager

/** * 功能：录音管理类 */public class AudioManager { private MediaRecorder mMediaRecorder; private String mDir; private String mCurrentFilePath; private static AudioManager mInstance; private boolean isPrepared; private AudioManager(String dir) { this.mDir = dir; } //单例模式：在这里实例化AudioManager并传入录音文件地址 public static AudioManager getInstance(String dir) { if (mInstance == null) { synchronized (AudioManager.class) { if (mInstance == null) { mInstance = new AudioManager(dir); } } } return mInstance; } /** * 回调准备完毕 */ public interface AudioStateListener { void wellPrepared(); } public AudioStateListener mListener; /** * 回调方法 */ public void setOnAudioStateListener(AudioStateListener listener) { mListener = listener; } /** * 准备 */ public void prepareAudio() { try { isPrepared = false; File dir = FileUtils.createNewFile(mDir); String fileName = generateFileName(); File file = new File(dir, fileName); mCurrentFilePath = file.getAbsolutePath(); Logger.t("AudioManager").i("audio file name :" + mCurrentFilePath); mMediaRecorder = new MediaRecorder(); //设置输出文件 mMediaRecorder.setOutputFile(mCurrentFilePath); //设置MediaRecorder的音频源为麦克风 mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); //设置音频格式 mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); //设置音频的格式为AAC mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC); //准备录音 mMediaRecorder.prepare(); //开始 mMediaRecorder.start(); //准备结束 isPrepared = true; if (mListener != null) { mListener.wellPrepared(); } } catch (Exception e) { e.printStackTrace(); } } /** * 随机生成文件的名称 */ private String generateFileName() { return UUID.randomUUID().toString() + ".m4a"; } public int getVoiceLevel(int maxLevel) { if (isPrepared) { try { //获得最大的振幅getMaxAmplitude() 1-32767 return maxLevel * mMediaRecorder.getMaxAmplitude() / 32768 + 1; } catch (Exception e) { } } return 1; } /** * 释放资源 */ public void release() { if (mMediaRecorder != null) { mMediaRecorder.stop(); mMediaRecorder.release(); mMediaRecorder = null; } } public void cancel() { release(); if (mCurrentFilePath != null) { File file = new File(mCurrentFilePath); FileUtils.deleteFile(file); mCurrentFilePath = null; } } public String getCurrentFilePath() { return mCurrentFilePath; }}

3、自定义录音按钮AudioRecorderButton

/** * 功能：录音按钮 */public class AudioRecorderButton extends AppCompatButton { private Context mContext; //取消录音Y轴位移 private static final int DISTANCE_Y_CANCEL = 80; //录音最大时长限制 private static final int AUDIO_RECORDER_MAX_TIME = 15; //录音倒计时时间 private static final int AUDIO_RECORDER_COUNT_DOWN = 7; //状态 private static final int STATE_NORMAL = 1;// 默认的状态 private static final int STATE_RECORDING = 2;// 正在录音 private static final int STATE_WANT_TO_CANCEL = 3;// 希望取消 //当前的状态 private int mCurrentState = STATE_NORMAL; //已经开始录音 private boolean isRecording = false; //是否触发onLongClick private boolean mReady; private DialogManager mDialogManager; private AudioManager mAudioManager; private android.media.AudioManager audioManager; public AudioRecorderButton(Context context) { this(context, null); } public AudioRecorderButton(Context context, AttributeSet attrs) { super(context, attrs); this.mContext = context; mDialogManager = new DialogManager(context); audioManager = (android.media.AudioManager) context.getSystemService(Context.AUDIO_SERVICE); String dir = SdUtils.getCustomFolder("Audios");//创建文件夹 mAudioManager = AudioManager.getInstance(dir); mAudioManager.setOnAudioStateListener(new AudioManager.AudioStateListener() { @Override public void wellPrepared() { mHandler.sendEmptyMessage(MSG_AUDIO_PREPARED); } }); //按钮长按 准备录音 包括start setOnLongClickListener(new OnLongClickListener() { @Override public boolean onLongClick(View v) { //先判断有没有录音和存储权限，有则开始录音，没有就申请权限 int hasAudioPermission = ContextCompat.checkSelfPermission(mContext, Manifest.permission.RECORD_AUDIO); int hasStoragePermission = ContextCompat.checkSelfPermission(mContext, Manifest.permission.WRITE_EXTERNAL_STORAGE); if (hasAudioPermission == PackageManager.PERMISSION_GRANTED && hasStoragePermission == PackageManager.PERMISSION_GRANTED) { mReady = true; mAudioManager.prepareAudio(); } else { RxPermissions permissions = new RxPermissions((FragmentActivity) mContext); Disposable disposable = permissions.request(Manifest.permission.RECORD_AUDIO, Manifest.permission.WRITE_EXTERNAL_STORAGE) .subscribe(new Consumer<Boolean>() { @Override public void accept(Boolean granted) { if (!granted) { ToastUtils.showShort("发送语音功能需要赋予录音和存储权限"); } } }); } return true; } }); } private static final int MSG_AUDIO_PREPARED = 0X110; private static final int MSG_VOICE_CHANGED = 0X111; private static final int MSG_DIALOG_DISMISS = 0X112; private static final int MSG_TIME_OUT = 0x113; private static final int UPDATE_TIME = 0x114; private boolean mThreadFlag = false; //录音时长 private float mTime; //获取音量大小的Runnable private Runnable mGetVoiceLevelRunnable = new Runnable() { @Override public void run() { while (isRecording) { try { Thread.sleep(100); mTime += 0.1f; mHandler.sendEmptyMessage(MSG_VOICE_CHANGED); if (mTime >= AUDIO_RECORDER_MAX_TIME) {//如果时间超过60秒，自动结束录音 while (!mThreadFlag) {//记录已经结束了录音，不需要再次结束，以免出现问题 mDialogManager.dismissDialog(); mAudioManager.release(); if (audioFinishRecorderListener != null) { //先回调，再Reset，不然回调中的时间是0 audioFinishRecorderListener.onFinish(mTime, mAudioManager.getCurrentFilePath()); mHandler.sendEmptyMessage(MSG_TIME_OUT); } mThreadFlag = !mThreadFlag; } isRecording = false; } else if (mTime >= AUDIO_RECORDER_COUNT_DOWN) { mHandler.sendEmptyMessage(UPDATE_TIME); } } catch (InterruptedException e) { e.printStackTrace(); } } } }; private Handler mHandler = new Handler(new Handler.Callback() { @Override public boolean handleMessage(Message msg) { switch (msg.what) { case MSG_AUDIO_PREPARED: mDialogManager.showRecordingDialog(); isRecording = true; new Thread(mGetVoiceLevelRunnable).start(); break; case MSG_VOICE_CHANGED: mDialogManager.updateVoiceLevel(mAudioManager.getVoiceLevel(7)); break; case MSG_DIALOG_DISMISS: mDialogManager.dismissDialog(); break; case MSG_TIME_OUT: reset(); break; case UPDATE_TIME: int countDown = (int) (AUDIO_RECORDER_MAX_TIME - mTime); mDialogManager.updateTime(countDown); break; } return true; } }); /** * 录音完成后的回调 */ public interface AudioFinishRecorderListener { /** * @param seconds 时长 * @param filePath 文件 */ void onFinish(float seconds, String filePath); } private AudioFinishRecorderListener audioFinishRecorderListener; public void setAudioFinishRecorderListener(AudioFinishRecorderListener listener) { audioFinishRecorderListener = listener; } android.media.AudioManager.OnAudioFocusChangeListener onAudioFocusChangeListener = new android.media.AudioManager.OnAudioFocusChangeListener() { @Override public void onAudioFocusChange(int focusChange) { if (focusChange == android.media.AudioManager.AUDIOFOCUS_LOSS) { audioManager.abandonAudioFocus(onAudioFocusChangeListener); } } }; public void myRequestAudioFocus() { audioManager.requestAudioFocus(onAudioFocusChangeListener, android.media.AudioManager.STREAM_MUSIC, android.media.AudioManager.AUDIOFOCUS_GAIN_TRANSIENT); } @Override public boolean onTouchEvent(MotionEvent event) { Logger.t("AudioManager").i("x :" + event.getX() + "-Y：" + event.getY()); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: mThreadFlag = false; isRecording = true; changeState(STATE_RECORDING); myRequestAudioFocus(); break; case MotionEvent.ACTION_MOVE: if (isRecording) { //根据想x,y的坐标，判断是否想要取消 if (event.getY() < 0 && Math.abs(event.getY()) > DISTANCE_Y_CANCEL) { changeState(STATE_WANT_TO_CANCEL); } else { changeState(STATE_RECORDING); } } break; case MotionEvent.ACTION_UP: //如果longClick 没触发 if (!mReady) { reset(); return super.onTouchEvent(event); } //触发了onLongClick 没准备好，但是已经prepared已经start //所以消除文件夹 if (!isRecording || mTime < 1.0f) { mDialogManager.tooShort(); mAudioManager.cancel(); mHandler.sendEmptyMessageDelayed(MSG_DIALOG_DISMISS, 1000); } else if (mCurrentState == STATE_RECORDING) {//正常录制结束 mDialogManager.dismissDialog(); mAudioManager.release(); if (audioFinishRecorderListener != null) { audioFinishRecorderListener.onFinish(mTime, mAudioManager.getCurrentFilePath()); } } else if (mCurrentState == STATE_WANT_TO_CANCEL) { mDialogManager.dismissDialog(); mAudioManager.cancel(); } reset(); audioManager.abandonAudioFocus(onAudioFocusChangeListener); break; } return super.onTouchEvent(event); } /** * 恢复状态 标志位 */ private void reset() { isRecording = false; mTime = 0; mReady = false; changeState(STATE_NORMAL); } /** * 改变状态 */ private void changeState(int state) { if (mCurrentState != state) { mCurrentState = state; switch (state) { case STATE_NORMAL: setText(R.string.audio_record_button_normal); break; case STATE_RECORDING: if (isRecording) { mDialogManager.recording(); } setText(R.string.audio_record_button_recording); break; case STATE_WANT_TO_CANCEL: mDialogManager.wantToCancel(); setText(R.string.audio_record_button_cancel); break; } } }}

4、DialogStyle

<!--App Base Theme--><style name="AppThemeParent" parent="Theme.AppCompat.Light.NoActionBar"> <!--不显示状态栏：22之前--> <item name="android:windowNoTitle">true</item> <item name="android:windowAnimationStyle">@style/ActivityAnimTheme</item><!--Activity动画--> <item name="actionOverflowMenuStyle">@style/MenuStyle</item><!--toolbar菜单样式--></style><!--Dialog式的Activity--><style name="ActivityDialogStyle" parent="AppThemeParent"> <item name="android:windowBackground">@android:color/transparent</item> <!-- 浮于Activity之上 --> <item name="android:windowIsFloating">true</item> <!-- 边框 --> <item name="android:windowFrame">@null</item> <!-- Dialog以外的区域模糊效果 --> <item name="android:backgroundDimEnabled">true</item> <!-- 半透明 --> <item name="android:windowIsTranslucent">true</item> <!-- Dialog进入及退出动画 --> <item name="android:windowAnimationStyle">@style/ActivityDialogAnimation</item></style><!--Audio Recorder Dialog--><style name="AudioRecorderDialogStyle" parent="ActivityDialogStyle"> <!-- Dialog以外的区域模糊效果 --> <item name="android:backgroundDimEnabled">false</item></style><!-- Dialog动画：渐入渐出--><style name="ActivityDialogAnimation" parent="@android:style/Animation.Dialog"> <item name="android:windowEnterAnimation">@anim/fade_in</item> <item name="android:windowExitAnimation">@anim/fade_out</item></style>

5、DialogLayout

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/audio_recorder_dialog_bg" android:gravity="center" android:orientation="vertical" android:padding="20dp"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageView android:id="@+id/iv_dialog_icon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/ic_audio_recorder" /> <ImageView android:id="@+id/iv_dialog_voice" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/ic_audio_v1" /> </LinearLayout> <TextView android:id="@+id/tv_dialog_label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="15dp" android:text="@string/audio_record_dialog_up_to_cancel" android:textColor="@color/white" android:textSize="15dp" /></LinearLayout>

6、用到的字符串

<!--AudioRecord--><string name="audio_record_button_normal">按住 说话</string><string name="audio_record_button_recording">松开 结束</string><string name="audio_record_button_cancel">松开手指 取消发送</string><string name="audio_record_dialog_up_to_cancel">手指上划，取消发送</string><string name="audio_record_dialog_release_to_cancel">松开手指，取消发送</string><string name="audio_record_dialog_too_short">录音时间过短</string>

7、使用：按钮的样式不需要写在自定义Button中，方便使用

<com.kidney.base_library.view.audioRecorder.AudioRecorderButton android:id="@+id/btn_audio_recorder" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/audio_record_button_normal" /> AudioRecorderButton audioRecorderButton = findViewById(R.id.btn_audio_recorder); audioRecorderButton.setAudioFinishRecorderListener(new AudioRecorderButton.AudioFinishRecorderListener() { @Override public void onFinish(float seconds, String filePath) { Logger.i(seconds + "秒：" + filePath); } });

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。

以上就上有关Android仿微信录音功能的全部内容，学步园全面介绍编程技术、操作系统、数据库、web前端技术等内容。