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 mAdapter;

private List mDatas = new ArrayList();

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 {

private Context mContext;

private List 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 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;

}

}

本文已被整理到了《Android微信开发教程汇总》，欢迎大家学习阅读。

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