本文实例讲述了Android仿微信语音聊天功能代码。分享给大家供大家参考。具体如下：

项目效果如下：

具体代码如下：

AudioManager.java

package com.xuliugen.weichat; import java.io.File; import java.io.IOException; import java.util.UUID; import android.media.MediaRecorder; public class AudioManager { private MediaRecorder mMediaRecorder; private String mDir; private String mCurrentFilePath; private static AudioManager mInstance; private boolean isPrepare; private AudioManager(String dir) { mDir = dir; } public static AudioManager getInstance(String dir) { if (mInstance == null) { synchronized (AudioManager.class) { if (mInstance == null) { mInstance = new AudioManager(dir); } } } return mInstance; } /** * 使用接口 用于回调 */ public interface AudioStateListener { void wellPrepared(); } public AudioStateListener mAudioStateListener; /** * 回调方法 */ public void setOnAudioStateListener(AudioStateListener listener) { mAudioStateListener = listener; } // 去准备 public void prepareAudio() { try { isPrepare = false; File dir = new File(mDir); if (!dir.exists()) { dir.mkdirs(); } String fileName = generateFileName(); File file = new File(dir, fileName); mCurrentFilePath =file.getAbsolutePath(); mMediaRecorder = new MediaRecorder(); // 设置输出文件 mMediaRecorder.setOutputFile(dir.getAbsolutePath()); // 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.RAW_AMR); // 设置音频编码 mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); // 准备录音 mMediaRecorder.prepare(); // 开始 mMediaRecorder.start(); // 准备结束 isPrepare = true; if (mAudioStateListener != null) { mAudioStateListener.wellPrepared(); } } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } /** * 随机生成文件的名称 */ private String generateFileName() { return UUID.randomUUID().toString() + ".amr"; } public int getVoiceLevel(int maxlevel) { if (isPrepare) { try { // mMediaRecorder.getMaxAmplitude() 1~32767 return maxlevel * mMediaRecorder.getMaxAmplitude() / 32768 + 1; } catch (Exception e) { } } return 1; } /** * 释放资源 */ public void release() { //mMediaRecorder.stop(); mMediaRecorder.reset(); mMediaRecorder = null; } /** * 取消录音 */ public void cancel() { release(); if (mCurrentFilePath != null) { File file = new File(mCurrentFilePath); file.delete(); mCurrentFilePath = null; } } public String getCurrentFilePath() { return mCurrentFilePath; } }

AudioRecorderButton.java

package com.xuliugen.weichat; import android.content.Context; import android.os.Environment; import android.os.Handler; import android.os.Message; import android.util.AttributeSet; import android.view.MotionEvent; import android.view.View; import android.widget.Button; import com.xuliugen.weichat.R; import com.xuliugen.weichat.AudioManager.AudioStateListener; public class AudioRecorderButton extends Button { 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 private int mCurrentState = STATE_NORMAL; // 当前的状态 private boolean isRecording = false;// 已经开始录音 private static final int DISTANCE_Y_CANCEL = 50; private DialogManager mDialogManager; private AudioManager mAudioManager; private float mTime; // 是否触发longClick private boolean mReady; private static final int MSG_AUDIO_PREPARED = 0x110; private static final int MSG_VOICE_CHANGED = 0x111; private static final int MSG_DIALOG_DIMISS = 0x112; /* * 获取音量大小的线程 */ private Runnable mGetVoiceLevelRunnable = new Runnable() { public void run() { while (isRecording) { try { Thread.sleep(100); mTime += 0.1f; mHandler.sendEmptyMessage(MSG_VOICE_CHANGED); } catch (InterruptedException e) { e.printStackTrace(); } } } }; private Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case MSG_AUDIO_PREPARED: // 显示對話框在开始录音以后 mDialogManager.showRecordingDialog(); isRecording = true; // 开启一个线程 new Thread(mGetVoiceLevelRunnable).start(); break; case MSG_VOICE_CHANGED: mDialogManager.updateVoiceLevel(mAudioManager.getVoiceLevel(7)); break; case MSG_DIALOG_DIMISS: mDialogManager.dimissDialog(); break; } super.handleMessage(msg); } }; /** * 以下2个方法是构造方法 */ public AudioRecorderButton(Context context, AttributeSet attrs) { super(context, attrs); mDialogManager = new DialogManager(context); String dir = "/storage/sdcard0/my_weixin"; //String dir = Environment.getExternalStorageDirectory()+"/my_weixin"; mAudioManager = AudioManager.getInstance(dir); mAudioManager.setOnAudioStateListener(new AudioStateListener() { public void wellPrepared() { mHandler.sendEmptyMessage(MSG_AUDIO_PREPARED); } }); // 由于这个类是button所以在构造方法中添加监听事件 setOnLongClickListener(new OnLongClickListener() { public boolean onLongClick(View v) { mReady = true; mAudioManager.prepareAudio(); return false; } }); } public AudioRecorderButton(Context context) { this(context, null); } /** * 录音完成后的回调 */ public interface AudioFinishRecorderListener { void onFinish(float seconds, String filePath); } private AudioFinishRecorderListener audioFinishRecorderListener; public void setAudioFinishRecorderListener(AudioFinishRecorderListener listener) { audioFinishRecorderListener = listener; } /** * 屏幕的触摸事件 */ @Override public boolean onTouchEvent(MotionEvent event) { int action = event.getAction(); int x = (int) event.getX();// 获得x轴坐标 int y = (int) event.getY();// 获得y轴坐标 switch (action) { case MotionEvent.ACTION_DOWN: changeState(STATE_RECORDING); break; case MotionEvent.ACTION_MOVE: if (isRecording) { // 如果想要取消，根据x,y的坐标看是否需要取消 if (wantToCancle(x, y)) { changeState(STATE_WANT_TO_CANCEL); } else { changeState(STATE_RECORDING); } } break; case MotionEvent.ACTION_UP: if (!mReady) { reset(); return super.onTouchEvent(event); } if (!isRecording || mTime < 0.6f) { mDialogManager.tooShort(); mAudioManager.cancel(); mHandler.sendEmptyMessageDelayed(MSG_DIALOG_DIMISS, 1000);// 延迟显示对话框 } else if (mCurrentState == STATE_RECORDING) { // 正在录音的时候，结束 mDialogManager.dimissDialog(); mAudioManager.release(); if (audioFinishRecorderListener != null) { audioFinishRecorderListener.onFinish(mTime,mAudioManager.getCurrentFilePath()); } } else if (mCurrentState == STATE_WANT_TO_CANCEL) { // 想要取消 mDialogManager.dimissDialog(); mAudioManager.cancel(); } reset(); break; } return super.onTouchEvent(event); } /** * 恢复状态及标志位 */ private void reset() { isRecording = false; mTime = 0; mReady = false; changeState(STATE_NORMAL); } private boolean wantToCancle(int x, int y) { if (x < 0 || x > getWidth()) { // 超过按钮的宽度 return true; } // 超过按钮的高度 if (y < -DISTANCE_Y_CANCEL || y > getHeight() + DISTANCE_Y_CANCEL) { return true; } return false; } /** * 改变 */ private void changeState(int state) { if (mCurrentState != state) { mCurrentState = state; switch (state) { case STATE_NORMAL: setBackgroundResource(R.drawable.btn_recorder_normal); setText(R.string.str_recorder_normal); break; case STATE_RECORDING: setBackgroundResource(R.drawable.btn_recorder_recording); setText(R.string.str_recorder_recording); if (isRecording) { mDialogManager.recording(); } break; case STATE_WANT_TO_CANCEL: setBackgroundResource(R.drawable.btn_recorder_recording); setText(R.string.str_recorder_want_cancel); mDialogManager.wantToCancel(); break; } } } }

DialogManager.java

package com.xuliugen.weichat; import android.app.AlertDialog; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.widget.ImageView; import android.widget.TextView; import com.xuliugen.weichat.R; /** * 用于管理Dialog * * @author xuliugen * */ public class DialogManager { private AlertDialog.Builder builder; private ImageView mIcon; private ImageView mVoice; private TextView mLable; private Context mContext; private AlertDialog dialog;//用于取消AlertDialog.Builder /** * 构造方法 传入上下文 */ public DialogManager(Context context) { this.mContext = context; } // 显示录音的对话框 public void showRecordingDialog() { builder = new AlertDialog.Builder(mContext, R.style.AudioDialog); LayoutInflater inflater = LayoutInflater.from(mContext); View view = inflater.inflate(R.layout.dialog_recorder,null); mIcon = (ImageView) view.findViewById(R.id.id_recorder_dialog_icon); mVoice = (ImageView) view.findViewById(R.id.id_recorder_dialog_voice); mLable = (TextView) view.findViewById(R.id.id_recorder_dialog_label); builder.setView(view); builder.create(); dialog = builder.show(); } public void recording(){ if(dialog != null && dialog.isShowing()){ //显示状态 mIcon.setVisibility(View.VISIBLE); mVoice.setVisibility(View.VISIBLE); mLable.setVisibility(View.VISIBLE); mIcon.setImageResource(R.drawable.recorder); mLable.setText("手指上滑，取消发送"); } } // 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); mLable.setVisibility(View.VISIBLE); mIcon.setImageResource(R.drawable.cancel); mLable.setText("松开手指，取消发送"); } } // 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); mLable.setVisibility(View.VISIBLE); mIcon.setImageResource(R.drawable.voice_to_short); mLable.setText("录音时间过短"); } } // 显示取消的对话框 public void dimissDialog() { 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 public void updateVoiceLevel(int level) { if(dialog != null && dialog.isShowing()){ //显示状态 // mIcon.setVisibility(View.VISIBLE); // mVoice.setVisibility(View.VISIBLE); // mLable.setVisibility(View.VISIBLE); //设置图片的id int resId = mContext.getResources().getIdentifier("v"+level, "drawable", mContext.getPackageName()); mVoice.setImageResource(resId); } } }

MainActivity.java

package com.xuliugen.weichat; import java.util.ArrayList; import java.util.List; import com.xuliugen.weichat.AudioRecorderButton.AudioFinishRecorderListener; import android.app.Activity; import android.graphics.drawable.AnimationDrawable; import android.media.MediaPlayer; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.AdapterView.OnItemClickListener; public class MainActivity extends Activity { private ListView mListView; private ArrayAdapter<Recorder> mAdapter; private List<Recorder> mDatas = new ArrayList<MainActivity.Recorder>(); private AudioRecorderButton mAudioRecorderButton; private View animView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mListView = (ListView) findViewById(R.id.id_listview); mAudioRecorderButton = (AudioRecorderButton) findViewById(R.id.id_recorder_button); mAudioRecorderButton.setAudioFinishRecorderListener(new AudioFinishRecorderListener() { public void onFinish(float seconds, String filePath) { Recorder recorder = new Recorder(seconds, filePath); mDatas.add(recorder); mAdapter.notifyDataSetChanged(); //通知更新的内容 mListView.setSelection(mDatas.size() - 1); //将lisview设置为最后一个 } }); mAdapter = new RecoderAdapter(this, mDatas); mListView.setAdapter(mAdapter); //listView的item点击事件 mListView.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> arg0, View view,int position, long id) { // 播放动画（帧动画） if (animView != null) { animView.setBackgroundResource(R.drawable.adj); animView = null; } animView = view.findViewById(R.id.id_recoder_anim); animView.setBackgroundResource(R.drawable.play_anim); AnimationDrawable animation = (AnimationDrawable) animView.getBackground(); animation.start(); // 播放录音 MediaManager.playSound(mDatas.get(position).filePath,new MediaPlayer.OnCompletionListener() { public void onCompletion(MediaPlayer mp) { animView.setBackgroundResource(R.drawable.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(); } class Recorder { float time; String filePath; public Recorder(float time, String filePath) { super(); this.time = time; this.filePath = filePath; } public float getTime() { return time; } public void setTime(float time) { this.time = time; } public String getFilePath() { return filePath; } public void setFilePath(String filePath) { this.filePath = filePath; } } }

MediaManager.java

package com.xuliugen.weichat; import android.media.AudioManager; import android.media.MediaPlayer; import android.media.MediaPlayer.OnCompletionListener; import android.media.MediaPlayer.OnErrorListener; public class MediaManager { private static MediaPlayer mMediaPlayer; private static boolean isPause; /** * 播放音乐 * @param filePath * @param onCompletionListener */ public static void playSound(String filePath,OnCompletionListener onCompletionListener) { if (mMediaPlayer == null) { mMediaPlayer = new MediaPlayer(); //设置一个error监听器 mMediaPlayer.setOnErrorListener(new OnErrorListener() { public boolean onError(MediaPlayer arg0, int arg1, int arg2) { 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) { } } /** * 暂停播放 */ public static void pause() { if (mMediaPlayer != null && mMediaPlayer.isPlaying()) { //正在播放的时候 mMediaPlayer.pause(); isPause = true; } } /** * 当前是isPause状态 */ 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; } } }

RecoderAdapter.java

package com.xuliugen.weichat; import java.util.List; import android.content.Context; import android.util.DisplayMetrics; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.WindowManager; import android.widget.ArrayAdapter; import android.widget.TextView; import com.xuliugen.weichat.MainActivity.Recorder; public class RecoderAdapter extends ArrayAdapter<Recorder> { private Context mContext; private List<Recorder> mDatas; private int mMinItemWidth; //最小的item宽度 private int mMaxItemWidth; //最大的item宽度 private LayoutInflater mInflater; public RecoderAdapter(Context context, List<Recorder> datas) { super(context, -1, datas); mContext = context; mDatas = datas; //获取屏幕的宽度 WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics outMetrics = new DisplayMetrics(); wm.getDefaultDisplay().getMetrics(outMetrics); mMaxItemWidth = (int) (outMetrics.widthPixels * 0.7f); mMinItemWidth = (int) (outMetrics.widthPixels * 0.15f); mInflater = LayoutInflater.from(context); } /** * 定义一个ViewHolder */ private class ViewHolder { TextView seconds; // 时间 View length; // 长度 } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder = null; if (convertView == null) { convertView = mInflater.inflate(R.layout.item_recoder, parent,false); holder = new ViewHolder(); holder.seconds = (TextView) convertView.findViewById(R.id.id_recoder_time); holder.length = convertView.findViewById(R.id.id_recoder_lenght); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } holder.seconds.setText(Math.round(getItem(position).time) + """); ViewGroup.LayoutParams lp = holder.length.getLayoutParams(); lp.width = (int) (mMinItemWidth + (mMaxItemWidth / 60f)* getItem(position).time); return convertView; } }

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