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Android仿微信、录制音频并发送功能

MyRecorder(仿微信，录制音频并发送功能)

①布局实现(activity_main.xml)
布局采用线性布局，上面使用的一个ListView,下面使用的是一个自定义的Button(会在下面进行介绍)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical"
 tools:context="com.yitong.myrecorder.MainActivity">

 <ListView
  android:id="@+id/main_listview"
  android:layout_width="match_parent"
  android:layout_height="0dp"
  android:layout_weight="1"
  android:background="#ebebeb"
  android:dividerHeight="10dp"
  android:divider="@null"
  />
 <FrameLayout
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:background="#fff">
  <com.yitong.myrecorder.view.AudioRecorderButton
   android:id="@+id/main_btn"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:gravity="center"
   android:layout_marginTop="6dp"
   android:layout_marginBottom="6dp"
   android:layout_marginLeft="60dp"
   android:layout_marginRight="60dp"
   android:minHeight="0dp"
   android:padding="6dp"
   android:text="@string/str_recoder_normal"
   android:textSize="20sp"
   android:textColor="#727272"
   android:background="@drawable/btn_recorder_normal"
   />
  <View
   android:layout_width="match_parent"
   android:layout_height="1dp"
   android:background="#ccc"/>
 </FrameLayout>
</LinearLayout>

相关使用的string值(需要添加到value/string中)：  

 <string name="str_recoder_normal">按住说话</string>
 <string name="str_recorder_recording">松开结束</string>
 <string name="str_recorder_want_cancel">松开手指，取消发送</string>
 <string name="str_dialog_want_cancel">手指上滑，取消发送</string>
 <string name="str_dialog_want_send">手指上滑，取消发送</string>
 <string name="str_dialog_time_short">录音时间过短</string>

②我们分析一下自定Button的几种状态：
1.正常状态 (在初次显示，即没有点击的时候显示的状态，显示的文本为“按住说话”)
2.录音状态 (当手指按在Button上时，即为录音状态，显示的文本为“松开结束”)
3.取消状态 (当手指上滑，此时若松开手指，便取消发送，即为取消状态，显示的文本为“松开手指，取消发送”)

③当录音状态时，在View上有一个Dialog的提示，首先我们先自定义这个Dialog的布局： 

<?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/dialog_bg"
    android:orientation="vertical"
    android:padding="20dp">
 <LinearLayout
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal"
  android:orientation="horizontal">

  <ImageView
   android:id="@+id/main_recorder_dialog_icon"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:src="@mipmap/recorder"
   android:visibility="visible"/>

  <ImageView
   android:id="@+id/main_recorder_dialog_voice"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:src="@mipmap/v1"
   android:visibility="visible"/>
 </LinearLayout>

 <TextView
  android:id="@+id/main_recorder_dialog_label"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal"
  android:layout_marginTop="5dp"
  android:text="@string/str_dialog_want_cancel"
  android:textColor="#fff"
  android:textSize="20sp"/>
</LinearLayout>

其中用到的@drawable/dialog_bg即为自定的shape

 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
   android:shape="rectangle">
  <corners android:radius="12dp"/>
  <solid android:color="#a3d7f5"/>
  <stroke
   android:width="1dp"
   android:color="#9b9b9b"/>
 </shape>

④定义DialogManager,便于对这个自定义布局的Dialog进行操作

public class DialogManager {

 private static final String TAG = "DialogManager";
 private Dialog mDialog;
 private ImageView mIcon;
 private ImageView mVoice;
 private TextView mLabel;

 private Context mContext;

 public DialogManager(Context mContext) {
  this.mContext = mContext;
 }

 /**
  * 显示对话框
  */
 public void showRecordeingDialog() {
  mDialog = new Dialog(mContext, R.style.Theme_AudioDialog);
  LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(mContext.LAYOUT_INFLATER_SERVICE);
  View view = inflater.inflate(R.layout.dialog, null);
  mDialog.setContentView(view);

  mIcon = (ImageView) mDialog.findViewById(R.id.main_recorder_dialog_icon);
  mVoice = (ImageView) mDialog.findViewById(R.id.main_recorder_dialog_voice);
  mLabel = (TextView) mDialog.findViewById(R.id.main_recorder_dialog_label);

  mDialog.show();
 }

 /**
  * 正在录制提示
  */
 public void recording() {
  if (mDialog != null && mDialog.isShowing()) {
   mIcon.setVisibility(View.VISIBLE);
   mVoice.setVisibility(View.VISIBLE);
   mLabel.setVisibility(View.VISIBLE);
   mIcon.setImageResource(R.mipmap.recorder);
   mLabel.setText(R.string.str_dialog_want_send);
  }
 }

 /**
  * 取消录制对话框提示
  */
 public void wantToCancel() {
  if (mDialog != null && mDialog.isShowing()) {
   mIcon.setVisibility(View.VISIBLE);
   mVoice.setVisibility(View.VISIBLE);
   mLabel.setVisibility(View.VISIBLE);
   mIcon.setImageResource(R.mipmap.recorder);
   mLabel.setText(R.string.str_recorder_want_cancel);
  }
 }

 /**
  * 录音时间过短提示
  */
 public void tooShort() {
  if (mDialog != null && mDialog.isShowing()) {
   mIcon.setVisibility(View.VISIBLE);
   mVoice.setVisibility(View.VISIBLE);
   mLabel.setVisibility(View.VISIBLE);
   mIcon.setImageResource(R.mipmap.recorder);
   mLabel.setText(R.string.str_dialog_time_short);
  }
 }

 /**
  * 取消对话框
  */
 public void dismissDialog() {
  if (mDialog != null && mDialog.isShowing()) {
   mDialog.dismiss();
   mDialog = null;
  }
 }

 /**
  * 显示音量大小
  */
 public void updateVoiceLevel(int level) {
  if (mDialog != null && mDialog.isShowing()) {
   int resId = mContext.getResources().getIdentifier("v" + level, "mipmap", mContext.getPackageName());
   mVoice.setImageResource(resId);
  }
 }
}

Dialog的样式Theme_AudioDialog,需要在values/styles.xml中定义

 <style name="Theme_AudioDialog">
  <item name="android:windowBackground">@android:color/transparent</item>
  <item name="android:windowFrame">@null</item>
  <item name="android:windowIsFloating">true</item>
  <item name="android:windowIsTranslucent">true</item>
  <item name="android:backgroundDimEnabled">false</item>
 </style>

⑤当手指按住Button时，便开始录音，所以我们还需要定义一个录音的管理类AudioManager来控制录制状态。

public class AudioManager {

 private MediaRecorder mMediaRecorder;
 private String mDir;// 保存的目录

 private String mCurrentFilePath;// 保存音频文件的全路径

 private boolean isPrepared = false;// 是否准备完毕

 private AudioManager(String dir) {
  mDir = dir;
 }

 private static AudioManager mInstance;

 public static AudioManager getmInstance(String mDir) {
  if (mInstance == null) {
   synchronized (AudioManager.class) {
    if (mInstance == null) {
     mInstance = new AudioManager(mDir);
    }
   }
  }
  return mInstance;
 }

 /**
  * 准备完毕的回调
  */
 public interface AudioStateListener {
  void wellPrepared();
 }

 private AudioStateListener mListener;

 public void setAudioStateListener(AudioStateListener listener) {
  mListener = listener;
 }

 /** 准备录制 */
 public void prepareAudio() {
  try {
   isPrepared = false;
   File dir = new File(mDir);
   if (!dir.exists()) {
    dir.mkdirs();
   }

   String fileName = generateName();
   File file = new File(dir, fileName);
   mCurrentFilePath = file.getAbsolutePath();

   mMediaRecorder = new MediaRecorder();
   // 设置输出文件
   mMediaRecorder.setOutputFile(mCurrentFilePath);
   // 设置音频源为麦克风
   mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
   // 设置音频格式
   mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR);
   // 设置音频编码
   mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

   mMediaRecorder.prepare();
   mMediaRecorder.start();

   isPrepared = true;
   if (mListener != null) {
    mListener.wellPrepared();
   }
  } catch (Exception e) {
   e.printStackTrace();
  }
 }

 /** 获取音量大小 */
 public int getVoiceLevel(int maxLevel) {
  if (isPrepared) {
   try {
    //mMediaRecorder.getMaxAmplitude() 1-32767
    //注意此处mMediaRecorder.getMaxAmplitude 只能取一次，如果前面取了一次，后边再取就为0了
    return ((mMediaRecorder.getMaxAmplitude() * maxLevel) / 32768) + 1;
   } catch (Exception e) {
   }

  }
  return 1;
 }

 /** 保存录音，释放资源 */
 public void release() {
  if(mMediaRecorder != null) {
   mMediaRecorder.stop();
   mMediaRecorder.release();
   mMediaRecorder = null;
  }
 }

 /** 取消录制 */
 public void cancel() {
  release();
  if(mCurrentFilePath != null) {
   File file = new File(mCurrentFilePath);
   if(file.exists()) {
    file.delete();
    mCurrentFilePath = null;
   }
  }
 }

 /** 获取录制音频的总路径 */
 public String getmCurrentFilePath(){
  return mCurrentFilePath;
 }

 /**
  * 生成一个随机名字
  */
 private String generateName() {
  return UUID.randomUUID().toString() + ".mp3";
 }
}

⑥处理完DialogManager和AudioManger后，接着我们回到自定义的Button，即AudioRecorderButton

public class AudioRecorderButton extends Button implements AudioManager.AudioStateListener {

 private static final int STATE_NORMAL = 1;//正常状态
 private static final int STATE_RECORDING = 2;//录音状态
 private static final int STATE_WANT_TO_CANCEL = 3;//取消状态
 private static final String TAG = "AudioRecorderButton";

 private int mCurState = STATE_NORMAL;//当前状态
 private boolean isRecording = false;//是否正在录音

 private DialogManager mDialogManger;
 private AudioManager mAudioManager;

 private boolean mReady = false;//是否触发longClick
 private float mTime;//计时

 public AudioRecorderButton(Context context) {
  this(context, null);
 }

 public AudioRecorderButton(Context context, AttributeSet attrs) {
  this(context, attrs, 0);
 }

 public AudioRecorderButton(Context context, AttributeSet attrs, int defStyleAttr) {
  super(context, attrs, defStyleAttr);
  mDialogManger = new DialogManager(getContext());

  String dir = Environment.getExternalStorageDirectory() + "/my_recorder_audios";
  mAudioManager = AudioManager.getmInstance(dir);
  mAudioManager.setAudioStateListener(this);

  setOnLongClickListener(new OnLongClickListener() {
   @Override
   public boolean onLongClick(View v) {
    mReady = true;
    mAudioManager.prepareAudio();
    return false;
   }
  });
 }

 @Override
 public boolean onTouchEvent(MotionEvent event) {
  int x = (int) event.getX();
  int y = (int) event.getY();
  switch (event.getAction()) {
   case MotionEvent.ACTION_DOWN:
    changeSate(STATE_RECORDING);
    break;

   case MotionEvent.ACTION_MOVE:
    if (isRecording) {
     if (isCancelRecorder(x, y)) {
      changeSate(STATE_WANT_TO_CANCEL);
     } else {
      changeSate(STATE_RECORDING);
     }
    }
    break;

   case MotionEvent.ACTION_UP:
    if (!mReady) {
     reset();
     return super.onTouchEvent(event);
    }
    if (!isRecording || mTime < 0.6f) {
     mDialogManger.tooShort();
     mAudioManager.cancel();
     mHandler.sendEmptyMessageDelayed(MSG_LODING_DISMISS, 1000);
    } else if (mCurState == STATE_RECORDING) {//正常录制结束
     mDialogManger.dismissDialog();
     mAudioManager.release();
     if (mListener != null) {
      mListener.onFinish(mTime, mAudioManager.getmCurrentFilePath());
     }
    } else if (mCurState == STATE_WANT_TO_CANCEL) {
     mDialogManger.dismissDialog();
     mAudioManager.cancel();
    }
    reset();
    break;
  }
  return super.onTouchEvent(event);
 }

 /**
  * 根据不同状态，更改不同的文字和显示的背景
  */
 private void changeSate(int stateRecording) {
  if (mCurState != stateRecording) {
   mCurState = stateRecording;
   switch (mCurState) {
    case STATE_NORMAL:
     setBackgroundResource(R.drawable.btn_recorder_normal);
     setText(R.string.str_recoder_normal);
     break;

    case STATE_RECORDING:
     setBackgroundResource(R.drawable.btn_recording);
     setText(R.string.str_recorder_recording);
     if (isRecording) {
      mDialogManger.recording();
     }
     break;

    case STATE_WANT_TO_CANCEL:
     setBackgroundResource(R.drawable.btn_recording);
     setText(R.string.str_recorder_want_cancel);
     mDialogManger.wantToCancel();
     break;
   }
  }
 }

 /**
  * 根据移动后的位置，判断是否取消录音
  */
 private boolean isCancelRecorder(int x, int y) {
  if (x < 0 || x > getWidth() || y < 0 || y > getHeight()) {
   return true;
  }
  return false;
 }

 /**
  * 重置标识位
  */
 private void reset() {
  changeSate(STATE_NORMAL);
  isRecording = false;
  mReady = false;
  mTime = 0;
 }

 /**
  * 开始播放时回调此方法
  */
 @Override
 public void wellPrepared() {
  mHandler.sendEmptyMessage(MSG_AUDIO_PREPARED);
 }

 private static final int MSG_AUDIO_PREPARED = 0x110;
 private static final int MSG_VOICE_CHAGE = 0x111;
 private static final int MSG_LODING_DISMISS = 0x112;

 private Handler mHandler = new Handler() {
  @Override
  public void handleMessage(Message msg) {
   super.handleMessage(msg);
   switch (msg.what) {
    case MSG_AUDIO_PREPARED:
     mDialogManger.showRecordeingDialog();
     isRecording = true;
     new Thread(mGetVoiceLevelRunnable).start();
     break;

    case MSG_VOICE_CHAGE:
     mDialogManger.updateVoiceLevel(mAudioManager.getVoiceLevel(7));
     break;

    case MSG_LODING_DISMISS:
     mDialogManger.dismissDialog();
     break;
   }
  }
 };

 /**
  * 获取音量大小，并计时
  */
 private Runnable mGetVoiceLevelRunnable = new Runnable() {
  @Override
  public void run() {
   while (isRecording) {
    SystemClock.sleep(100);
    mTime += 0.1f;
    mHandler.sendEmptyMessage(MSG_VOICE_CHAGE);
   }
  }
 };

 /**
  * 完成录制后的回调接口
  */
 public interface AudioFinishRecorderListener {
  void onFinish(float time, String filePath);
 }

 private AudioFinishRecorderListener mListener;

 public void setAudioFinishRecorderListener(AudioFinishRecorderListener listener) {
  mListener = listener;
 }
}

=====================至此自定义Button就定义完===================================

①接着我们回到了MainActivity,我们需要获取ListView和AudioRecorderButton组件。对于ListView,需要定义Adapter,当点击某个条目的需要把录制的音频播放出来，需要定义一个MediaManager来控制音频的播放。

②首先我们先定义RecorderAdapter

/**
 * 音频实体类，包含音频的长度和保存的路径
 */
public class Recorder implements Serializable {
 private int time;
 private String filePath;

 public Recorder() {
 }

 public Recorder(int time, String filePath) {
  this.time = time;
  this.filePath = filePath;
 }

 public void setTime(int time) {
  this.time = time;
 }

 public void setFilePath(String filePath) {
  this.filePath = filePath;
 }

 public float getTime() {
  return time;
 }

 public String getFilePath() {
  return filePath;
 }
}

/**
 * 继承ArrayAdater,重写getView方法
 */
public class RecorderAdapter extends ArrayAdapter<Recorder> {

 private List<Recorder> mDatas;
 private Context mContext;

 private LayoutInflater mInfalter;

 private int mMinItemWidhth;
 private int mMaxItemWidhth;

 public RecorderAdapter(Context context, List<Recorder> datas) {
  super(context, -1, datas);
  mDatas = datas;
  mContext = context;

  mInfalter = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

  WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
  DisplayMetrics outMetrics = new DisplayMetrics();
  wm.getDefaultDisplay().getMetrics(outMetrics);

  mMaxItemWidhth = (int) (outMetrics.widthPixels * 0.7f);
  mMinItemWidhth = (int) (outMetrics.widthPixels * 0.15f);
 }

 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
  ViewHolder holder = new ViewHolder();
  if(convertView == null) {
   convertView = mInfalter.inflate(R.layout.item_recorder, null);
  }
  holder = holder.getHolder(convertView);
  holder.setView(holder, mDatas.get(position));
  return convertView;
 }

 private class ViewHolder{
  TextView time;
  View length;

  public ViewHolder getHolder(View view){
   ViewHolder holder = (ViewHolder) view.getTag();
   if(holder == null) {
    holder = new ViewHolder();
   }
   holder.time = (TextView) view.findViewById(R.id.item_recorder_time);
   holder.length = view.findViewById(R.id.item_recorder_length);
   view.setTag(holder);

   return holder;
  }

  public void setView(ViewHolder holder, Recorder recorder) {
   holder.time.setText(recorder.getTime() + "\"");
   ViewGroup.LayoutParams layoutParams = holder.length.getLayoutParams();
   layoutParams.width = (int) (mMinItemWidhth + (mMaxItemWidhth / 60f * recorder.getTime()));
  }
 }
}

③定义MediaManger,用于播放音频

public class MediaManager {

 private static MediaPlayer mMediaPlayer;

 private static boolean isPause = false;//是否是暂停

 /**
  * 播放音频
  */
 public static void playSound(String filePath, MediaPlayer.OnCompletionListener onCompletionListener) {
  if (mMediaPlayer == null) {
   mMediaPlayer = new MediaPlayer();
   mMediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
    @Override
    public boolean onError(MediaPlayer mp, int what, int extra) {
     mMediaPlayer.reset();
     return false;
    }
   });
  } else {
   mMediaPlayer.reset();
  }

  try {
   mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
   mMediaPlayer.setOnCompletionListener(onCompletionListener);
   mMediaPlayer.setDataSource(filePath);
   mMediaPlayer.prepare();
   mMediaPlayer.start();
  } catch (Exception e) {
   e.printStackTrace();
  }
 }

 /**
  * 暂停
  */
 public static void pause() {
  if (mMediaPlayer != null && mMediaPlayer.isPlaying()) {
   mMediaPlayer.pause();
   isPause = true;
  }
 }

 /**
  * 继续
  */
 public static void resume() {
  if (mMediaPlayer != null && isPause) {
   mMediaPlayer.start();
   isPause = false;
  }
 }

 /**
  * 释放资源
  */
 public static void release() {
  if (mMediaPlayer != null) {
   mMediaPlayer.release();
   mMediaPlayer = null;
  }
 }

}

④MainActivity的实现

public class MainActivity extends AppCompatActivity {

 private static final String TAG = "MainActivity";

 private List<Recorder> mDatas = new ArrayList<Recorder>();

 private AudioRecorderButton mAudioRecorderButton;
 private ListView mListView;
 private RecorderAdapter mAdapter;
 private View mAnimView;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  initView();
  initAction();
 }

 private void initView() {
  mAudioRecorderButton = (AudioRecorderButton) findViewById(R.id.main_btn);
  mListView = (ListView) findViewById(R.id.main_listview);
 }

 private void initAction() {
  mAudioRecorderButton.setAudioFinishRecorderListener(new AudioRecorderButton.AudioFinishRecorderListener() {
   @Override
   public void onFinish(float time, String filePath) {
    Recorder recorder = new Recorder((int)time, filePath);
    mDatas.add(recorder);
    mAdapter.notifyDataSetChanged();
    mListView.setSelection(mDatas.size() - 1);
   }
  });
  mAdapter = new RecorderAdapter(this, mDatas);
  mListView.setAdapter(mAdapter);

  mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
   @Override
   public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    // 播放帧动画
    mAnimView = view.findViewById(R.id.item_anim);
    mAnimView.setBackgroundResource(R.drawable.play_anim);
    AnimationDrawable anim = (AnimationDrawable) mAnimView.getBackground();
    anim.start();

    // 播放音频
    MediaManager.playSound(mDatas.get(position).getFilePath(), new MediaPlayer.OnCompletionListener() {
     @Override
     public void onCompletion(MediaPlayer mp) {
      mAnimView.setBackgroundResource(R.mipmap.adj);
     }
    });
   }
  });
 }

 @Override
 protected void onPause() {
  super.onPause();
  MediaManager.pause();
 }

 @Override
 protected void onResume() {
  super.onResume();
  MediaManager.resume();
 }

 @Override
 protected void onDestroy() {
  super.onDestroy();
  MediaManager.release();
 }
}

帧动画play_anim定义在drawable下

 <?xml version="1.0" encoding="utf-8"?>
 <animation-list xmlns:android="http://schemas.android.com/apk/res/android"
  >
  <item
   android:drawable="@mipmap/v_anim1"
   android:duration="300"/>
  <item
   android:drawable="@mipmap/v_anim2"
   android:duration="300"/>
  <item
   android:drawable="@mipmap/v_anim3"
   android:duration="300"/>
 </animation-list>

⑤最后，不要忘了添加权限

<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>

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