Android仿微信語音聊天功能

本文實例講述了Android仿微信語音聊天功能代碼。分享給大家供大家參考。具體如下：
項目效果如下：

具體代碼如下：

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 用於回調
 */
 public interface AudioStateListener {
 void wellPrepared();
 }

 public AudioStateListener mAudioStateListener;

 /**
 * 回調方法
 */
 public void setOnAudioStateListener(AudioStateListener listener) {
 mAudioStateListener = listener;
 }

 // 去准備
 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();
 // 設置輸出文件
 mMediaRecorder.setOutputFile(dir.getAbsolutePath());
 // 設置MediaRecorder的音頻源為麥克風
 mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
 // 設置音頻格式
 mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR);
 // 設置音頻編碼
 mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

 // 准備錄音
 mMediaRecorder.prepare();
 // 開始
 mMediaRecorder.start();
 // 准備結束
 isPrepare = true;
 if (mAudioStateListener != null) {
 mAudioStateListener.wellPrepared();
 }

 } catch (IllegalStateException e) {
 e.printStackTrace();
 } catch (IOException e) {
 e.printStackTrace();
 }

 }

 /**
 * 隨機生成文件的名稱
 */
 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;
 }

 /**
 * 釋放資源
 */
 public void release() {
 //mMediaRecorder.stop();
 mMediaRecorder.reset();
 mMediaRecorder = null;
 }

 /**
 * 取消錄音
 */
 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;// 默認的狀態
 private static final int STATE_RECORDING = 2;// 正在錄音
 private static final int STATE_WANT_TO_CANCEL = 3;// 希望取消

 private int mCurrentState = STATE_NORMAL; // 當前的狀態
 private boolean isRecording = false;// 已經開始錄音

 private static final int DISTANCE_Y_CANCEL = 50;

 private DialogManager mDialogManager;
 private AudioManager mAudioManager;

 private float mTime;
 // 是否觸發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;

 /*
 * 獲取音量大小的線程
 */
 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:
 // 顯示對話框在開始錄音以後
 mDialogManager.showRecordingDialog();
 isRecording = true;
 // 開啟一個線程
 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個方法是構造方法
 */
 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);
 }
 });

 // 由於這個類是button所以在構造方法中添加監聽事件
 setOnLongClickListener(new OnLongClickListener() {

 public boolean onLongClick(View v) {
 mReady = true;

 mAudioManager.prepareAudio();

 return false;
 }
 });
 }

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

 /**
 * 錄音完成後的回調
 */
 public interface AudioFinishRecorderListener {
 void onFinish(float seconds, String filePath);
 }

 private AudioFinishRecorderListener audioFinishRecorderListener;

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

 /**
 * 屏幕的觸摸事件
 */
 @Override
 public boolean onTouchEvent(MotionEvent event) {

 int action = event.getAction();
 int x = (int) event.getX();// 獲得x軸坐標
 int y = (int) event.getY();// 獲得y軸坐標

 switch (action) {
 case MotionEvent.ACTION_DOWN:
 changeState(STATE_RECORDING);
 break;
 case MotionEvent.ACTION_MOVE:

 if (isRecording) {
 // 如果想要取消，根據x,y的坐標看是否需要取消
 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);// 延遲顯示對話框
 } else if (mCurrentState == STATE_RECORDING) { // 正在錄音的時候，結束
 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);
 }

 /**
 * 恢復狀態及標志位
 */
 private void reset() {
 isRecording = false;
 mTime = 0;
 mReady = false;
 changeState(STATE_NORMAL);
 }

 private boolean wantToCancle(int x, int y) {
 if (x < 0 || x > getWidth()) { // 超過按鈕的寬度
 return true;
 }
 // 超過按鈕的高度
 if (y < -DISTANCE_Y_CANCEL || y > getHeight() + DISTANCE_Y_CANCEL) {
 return true;
 }

 return false;
 }

 /**
 * 改變
 */
 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;

/**
 * 用於管理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;//用於取消AlertDialog.Builder

 /**
 * 構造方法 傳入上下文
 */
 public DialogManager(Context context) {
 this.mContext = context;
 }

 // 顯示錄音的對話框
 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()){ //顯示狀態
 mIcon.setVisibility(View.VISIBLE);
 mVoice.setVisibility(View.VISIBLE);
 mLable.setVisibility(View.VISIBLE);

 mIcon.setImageResource(R.drawable.recorder);
 mLable.setText("手指上滑，取消發送");
 }
 }

 // 顯示想取消的對話框
 public void wantToCancel() {
 if(dialog != null && dialog.isShowing()){ //顯示狀態
 mIcon.setVisibility(View.VISIBLE);
 mVoice.setVisibility(View.GONE);
 mLable.setVisibility(View.VISIBLE);

 mIcon.setImageResource(R.drawable.cancel);
 mLable.setText("松開手指，取消發送");
 }
 }

 // 顯示時間過短的對話框
 public void tooShort() {
 if(dialog != null && dialog.isShowing()){ //顯示狀態
 mIcon.setVisibility(View.VISIBLE);
 mVoice.setVisibility(View.GONE);
 mLable.setVisibility(View.VISIBLE);

 mIcon.setImageResource(R.drawable.voice_to_short);
 mLable.setText("錄音時間過短");
 }
 }

 // 顯示取消的對話框
 public void dimissDialog() {
 if(dialog != null && dialog.isShowing()){ //顯示狀態
 dialog.dismiss();
 dialog = null;
 }
 }

 // 顯示更新音量級別的對話框
 public void updateVoiceLevel(int level) {
 if(dialog != null && dialog.isShowing()){ //顯示狀態
// mIcon.setVisibility(View.VISIBLE);
// mVoice.setVisibility(View.VISIBLE);
// mLable.setVisibility(View.VISIBLE);

 //設置圖片的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(); //通知更新的內容
 mListView.setSelection(mDatas.size() - 1); //將lisview設置為最後一個
 }
 });

 mAdapter = new RecoderAdapter(this, mDatas);
 mListView.setAdapter(mAdapter);

 //listView的item點擊事件
 mListView.setOnItemClickListener(new OnItemClickListener() {

 public void onItemClick(AdapterView<?> arg0, View view,int position, long id) {
 // 播放動畫（幀動畫）
 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();
 // 播放錄音
 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;

 /**
 * 播放音樂
 * @param filePath
 * @param onCompletionListener
 */
 public static void playSound(String filePath,OnCompletionListener onCompletionListener) {
 if (mMediaPlayer == null) {
 mMediaPlayer = new MediaPlayer();

 //設置一個error監聽器
 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) {

 }
 }

 /**
 * 暫停播放
 */
 public static void pause() {
 if (mMediaPlayer != null && mMediaPlayer.isPlaying()) { //正在播放的時候
 mMediaPlayer.pause();
 isPause = true;
 }
 }

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

 /**
 * 釋放資源
 */
 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寬度
 private int mMaxItemWidth; //最大的item寬度
 private LayoutInflater mInflater;

 public RecoderAdapter(Context context, List<Recorder> datas) {
 super(context, -1, datas);

 mContext = context;
 mDatas = datas;

 //獲取屏幕的寬度
 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);
 }

 /**
 * 定義一個ViewHolder
 */
 private class ViewHolder {
 TextView seconds; // 時間
 View length; // 長度
 }

 @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微信開發教程匯總》，歡迎大家學習閱讀。

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