Android仿微信语音对讲录音功能
自微信出现以来取得了很好的成绩,语音对讲的实现更加方便了人与人之间的交流。今天来实践一下微信的语音对讲的录音实现,这个也比较容易实现。在此,我将该按钮封装成为一个控件,并通过策略模式的方式实现录音和界面的解耦合,以方便我们在实际情况中对录音方法的不同需求(例如想要实现wav格式的编码时我们也就不能再使用MediaRecorder,而只能使用AudioRecord进行处理)。
效果图:
实现思路:
1.在微信中我们可以看到实现语音对讲的是通过点按按钮来完成的,因此在这里我选择重新自己的控件使其继承自Button并重写onTouchEvent方法,来实现对录音的判断。
2.在onTouchEvent方法中,
当我们按下按钮时,首先显示录音的对话框,然后调用录音准备方法并开始录音,接着开启一个计时线程,每隔0.1秒的时间获取一次录音音量的大小,并通过Handler根据音量大小更新Dialog中的显示图片;
当我们移动手指时,若手指向上移动距离大于50,在Dialog中显示松开手指取消录音的提示,并将isCanceled变量(表示我们最后是否取消了录音)置为true,上移动距离小于20时,我们恢复Dialog的图片,并将isCanceled置为false;
当抬起手指时,我们首先关闭录音对话框,接着调用录音停止方法并关闭计时线程,然后我们判断是否取消录音,若是的话则删除录音文件,否则判断计时时间是否太短,最后调用回调接口中的recordEnd方法。
3.在这里为了适应不同的录音需求,我使用了策略模式来进行处理,将每一个不同的录音方法视为一种不同的策略,根据自己的需要去改写。
注意问题
1.在onTouchEvent的返回值中应该返回true,这样才能屏蔽之后其他的触摸事件,否则当手指滑动离开Button之后将不能在响应我们的触摸方法。
2.不要忘记为自己的App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.READ_EXTERNAL_STORAGE" />
代码参考
RecordButton 类,我们的自定义控件,重新复写了onTouchEvent方法
package com.example.recordtest; import android.annotation.SuppressLint; import android.app.Dialog; import android.content.Context; import android.os.Handler; import android.os.Message; import android.util.AttributeSet; import android.view.Gravity; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; public class RecordButton extends Button { private static final int MIN_RECORD_TIME = 1; // 最短录音时间,单位秒 private static final int RECORD_OFF = 0; // 不在录音 private static final int RECORD_ON = 1; // 正在录音 private Dialog mRecordDialog; private RecordStrategy mAudioRecorder; private Thread mRecordThread; private RecordListener listener; private int recordState = 0; // 录音状态 private float recodeTime = 0.0f; // 录音时长,如果录音时间太短则录音失败 private double voiceValue = 0.0; // 录音的音量值 private boolean isCanceled = false; // 是否取消录音 private float downY; private TextView dialogTextView; private ImageView dialogImg; private Context mContext; public RecordButton(Context context) { super(context); // TODO Auto-generated constructor stub init(context); } public RecordButton(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // TODO Auto-generated constructor stub init(context); } public RecordButton(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub init(context); } private void init(Context context) { mContext = context; this.setText("按住 说话"); } public void setAudioRecord(RecordStrategy record) { this.mAudioRecorder = record; } public void setRecordListener(RecordListener listener) { this.listener = listener; } // 录音时显示Dialog private void showVoiceDialog(int flag) { if (mRecordDialog == null) { mRecordDialog = new Dialog(mContext, R.style.Dialogstyle); mRecordDialog.setContentView(R.layout.dialog_record); dialogImg = (ImageView) mRecordDialog .findViewById(R.id.record_dialog_img); dialogTextView = (TextView) mRecordDialog .findViewById(R.id.record_dialog_txt); } switch (flag) { case 1: dialogImg.setImageResource(R.drawable.record_cancel); dialogTextView.setText("松开手指可取消录音"); this.setText("松开手指 取消录音"); break; default: dialogImg.setImageResource(R.drawable.record_animate_01); dialogTextView.setText("向上滑动可取消录音"); this.setText("松开手指 完成录音"); break; } dialogTextView.setTextSize(14); mRecordDialog.show(); } // 录音时间太短时Toast显示 private void showWarnToast(String toastText) { Toast toast = new Toast(mContext); View warnView = LayoutInflater.from(mContext).inflate( R.layout.toast_warn, null); toast.setView(warnView); toast.setGravity(Gravity.CENTER, 0, 0);// 起点位置为中间 toast.show(); } // 开启录音计时线程 private void callRecordTimeThread() { mRecordThread = new Thread(recordThread); mRecordThread.start(); } // 录音Dialog图片随录音音量大小切换 private void setDialogImage() { if (voiceValue < 600.0) { dialogImg.setImageResource(R.drawable.record_animate_01); } else if (voiceValue > 600.0 && voiceValue < 1000.0) { dialogImg.setImageResource(R.drawable.record_animate_02); } else if (voiceValue > 1000.0 && voiceValue < 1200.0) { dialogImg.setImageResource(R.drawable.record_animate_03); } else if (voiceValue > 1200.0 && voiceValue < 1400.0) { dialogImg.setImageResource(R.drawable.record_animate_04); } else if (voiceValue > 1400.0 && voiceValue < 1600.0) { dialogImg.setImageResource(R.drawable.record_animate_05); } else if (voiceValue > 1600.0 && voiceValue < 1800.0) { dialogImg.setImageResource(R.drawable.record_animate_06); } else if (voiceValue > 1800.0 && voiceValue < 2000.0) { dialogImg.setImageResource(R.drawable.record_animate_07); } else if (voiceValue > 2000.0 && voiceValue < 3000.0) { dialogImg.setImageResource(R.drawable.record_animate_08); } else if (voiceValue > 3000.0 && voiceValue < 4000.0) { dialogImg.setImageResource(R.drawable.record_animate_09); } else if (voiceValue > 4000.0 && voiceValue < 6000.0) { dialogImg.setImageResource(R.drawable.record_animate_10); } else if (voiceValue > 6000.0 && voiceValue < 8000.0) { dialogImg.setImageResource(R.drawable.record_animate_11); } else if (voiceValue > 8000.0 && voiceValue < 10000.0) { dialogImg.setImageResource(R.drawable.record_animate_12); } else if (voiceValue > 10000.0 && voiceValue < 12000.0) { dialogImg.setImageResource(R.drawable.record_animate_13); } else if (voiceValue > 12000.0) { dialogImg.setImageResource(R.drawable.record_animate_14); } } // 录音线程 private Runnable recordThread = new Runnable() { @Override public void run() { recodeTime = 0.0f; while (recordState == RECORD_ON) { { try { Thread.sleep(100); recodeTime += 0.1; // 获取音量,更新dialog if (!isCanceled) { voiceValue = mAudioRecorder.getAmplitude(); recordHandler.sendEmptyMessage(1); } } catch (InterruptedException e) { e.printStackTrace(); } } } } }; @SuppressLint("HandlerLeak") private Handler recordHandler = new Handler() { @Override public void handleMessage(Message msg) { setDialogImage(); } }; @Override public boolean onTouchEvent(MotionEvent event) { // TODO Auto-generated method stub switch (event.getAction()) { case MotionEvent.ACTION_DOWN: // 按下按钮 if (recordState != RECORD_ON) { showVoiceDialog(0); downY = event.getY(); if (mAudioRecorder != null) { mAudioRecorder.ready(); recordState = RECORD_ON; mAudioRecorder.start(); callRecordTimeThread(); } } break; case MotionEvent.ACTION_MOVE: // 滑动手指 float moveY = event.getY(); if (downY - moveY > 50) { isCanceled = true; showVoiceDialog(1); } if (downY - moveY < 20) { isCanceled = false; showVoiceDialog(0); } break; case MotionEvent.ACTION_UP: // 松开手指 if (recordState == RECORD_ON) { recordState = RECORD_OFF; if (mRecordDialog.isShowing()) { mRecordDialog.dismiss(); } mAudioRecorder.stop(); mRecordThread.interrupt(); voiceValue = 0.0; if (isCanceled) { mAudioRecorder.deleteOldFile(); } else { if (recodeTime < MIN_RECORD_TIME) { showWarnToast("时间太短 录音失败"); mAudioRecorder.deleteOldFile(); } else { if (listener != null) { listener.recordEnd(mAudioRecorder.getFilePath()); } } } isCanceled = false; this.setText("按住 说话"); } break; } return true; } public interface RecordListener { public void recordEnd(String filePath); } }
Dialog布局:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:gravity="center" android:background="@drawable/record_bg" android:padding="20dp" > <ImageView android:id="@+id/record_dialog_img" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/record_dialog_txt" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@android:color/white" android:layout_marginTop="5dp" /> </LinearLayout>
录音时间太短的Toast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/record_bg" android:padding="20dp" android:gravity="center" android:orientation="vertical" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/voice_to_short" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@android:color/white" android:textSize="15sp" android:text="时间太短 录音失败" /> </LinearLayout>
自定义的Dialogstyle,对话框样式
<style name="Dialogstyle"> <item name="android:windowBackground">@android:color/transparent</item> <item name="android:windowFrame">@null</item> <item name="android:windowNoTitle">true</item> <item name="android:windowIsFloating">true</item> <item name="android:windowIsTranslucent">true</item> <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item> <!-- 显示对话框时当前的屏幕是否变暗 --> <item name="android:backgroundDimEnabled">false</item> </style>
RecordStrategy 录音策略接口
package com.example.recordtest; /** * RecordStrategy 录音策略接口 * @author acer */ public interface RecordStrategy { /** * 在这里进行录音准备工作,重置录音文件名等 */ public void ready(); /** * 开始录音 */ public void start(); /** * 录音结束 */ public void stop(); /** * 录音失败时删除原来的旧文件 */ public void deleteOldFile(); /** * 获取录音音量的大小 * @return */ public double getAmplitude(); /** * 返回录音文件完整路径 * @return */ public String getFilePath(); }
个人写的一个录音实践策略
package com.example.recordtest; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import android.media.MediaRecorder; import android.os.Environment; public class AudioRecorder implements RecordStrategy { private MediaRecorder recorder; private String fileName; private String fileFolder = Environment.getExternalStorageDirectory() .getPath() + "/TestRecord"; private boolean isRecording = false; @Override public void ready() { // TODO Auto-generated method stub File file = new File(fileFolder); if (!file.exists()) { file.mkdir(); } fileName = getCurrentDate(); recorder = new MediaRecorder(); recorder.setOutputFile(fileFolder + "/" + fileName + ".amr"); recorder.setAudioSource(MediaRecorder.AudioSource.MIC);// 设置MediaRecorder的音频源为麦克风 recorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR);// 设置MediaRecorder录制的音频格式 recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);// 设置MediaRecorder录制音频的编码为amr } // 以当前时间作为文件名 private String getCurrentDate() { SimpleDateFormat formatter = new SimpleDateFormat("yyyy_MM_dd_HHmmss"); Date curDate = new Date(System.currentTimeMillis());// 获取当前时间 String str = formatter.format(curDate); return str; } @Override public void start() { // TODO Auto-generated method stub if (!isRecording) { try { recorder.prepare(); recorder.start(); } catch (IllegalStateException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } isRecording = true; } } @Override public void stop() { // TODO Auto-generated method stub if (isRecording) { recorder.stop(); recorder.release(); isRecording = false; } } @Override public void deleteOldFile() { // TODO Auto-generated method stub File file = new File(fileFolder + "/" + fileName + ".amr"); file.deleteOnExit(); } @Override public double getAmplitude() { // TODO Auto-generated method stub if (!isRecording) { return 0; } return recorder.getMaxAmplitude(); } @Override public String getFilePath() { // TODO Auto-generated method stub return fileFolder + "/" + fileName + ".amr"; } }
MainActivity
package com.example.recordtest; import android.os.Bundle; import android.app.Activity; import android.view.Menu; public class MainActivity extends Activity { RecordButton button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (RecordButton) findViewById(R.id.btn_record); button.setAudioRecord(new AudioRecorder()); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }
源码下载:Android仿微信语音对讲录音
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