这篇文章给大家分享的是有关Android如何实现边录边播应用的内容。小编觉得挺实用的，因此分享给大家做个参考，一起跟随小编过来看看吧。
具体内容如下
Android.mk
LOCAL_PATH:= $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE_TAGS := optionalLOCAL_SRC_FILES := $(call all-subdir-java-files)LOCAL_PACKAGE_NAME := testRecordinclude $(BUILD_PACKAGE)AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.testRecord" android:versionCode="1" android:versionName="1.0"> <uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission> <application android:icon="@drawable/icon" android:label="Bug Report Sender"> <activity android:name=".testRecord" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> </application></manifest>res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <Button android:layout_height="wrap_content" android:id="@+id/btnRecord" android:layout_width="fill_parent" android:text="@string/btnR"></Button> <Button android:layout_height="wrap_content" android:layout_width="fill_parent" android:text="@string/btnS" android:id="@+id/btnStop"></Button> <Button android:layout_height="wrap_content" android:id="@+id/btnExit" android:layout_width="fill_parent" android:text="@string/btnE"></Button> <TextView android:id="@+id/TextView01" android:layout_height="wrap_content" android:text="@string/textV" android:layout_width="fill_parent"></TextView> <SeekBar android:layout_height="wrap_content" android:id="@+id/skbVolume" android:layout_width="fill_parent"></SeekBar> </LinearLayout>res/values/strings.xml
<?xml version="1.0" encoding="utf-8"?> <resources> <string name="app_name">bianlubianbo</string> <string name="btnR">start</string> <string name="btnS">stop</string> <string name="btnE">exit</string> <string name="textV">vlounm</string></resources>res/drawable/icom.png
6.src/com/testRecord/testRecord.java
package com.testRecord; import android.app.Activity; import android.media.AudioFormat; import android.media.AudioManager; import android.media.AudioRecord; import android.media.AudioTrack; import android.media.MediaRecorder; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.SeekBar; import android.widget.Toast; public class testRecord extends Activity { Button btnRecord, btnStop, btnExit; SeekBar skbVolume;//调节音量 boolean isRecording = false;//是否录放的标记 static final int frequency = 8000;//44100; static final int channelConfiguration = AudioFormat.CHANNEL_CONFIGURATION_MONO; static final int audioEncoding = AudioFormat.ENCODING_PCM_16BIT; int recBufSize,playBufSize; AudioRecord audioRecord; AudioTrack audioTrack; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); setTitle("助听器"); recBufSize = AudioRecord.getMinBufferSize(frequency, channelConfiguration, audioEncoding); playBufSize=AudioTrack.getMinBufferSize(frequency, channelConfiguration, audioEncoding); // ----------------------------------------- audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, frequency, channelConfiguration, audioEncoding, recBufSize*10); audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, frequency, channelConfiguration, audioEncoding, playBufSize, AudioTrack.MODE_STREAM); //------------------------------------------ btnRecord = (Button) this.findViewById(R.id.btnRecord); btnRecord.setOnClickListener(new ClickEvent()); btnStop = (Button) this.findViewById(R.id.btnStop); btnStop.setOnClickListener(new ClickEvent()); btnExit = (Button) this.findViewById(R.id.btnExit); btnExit.setOnClickListener(new ClickEvent()); skbVolume=(SeekBar)this.findViewById(R.id.skbVolume); skbVolume.setMax(100);//音量调节的极限 skbVolume.setProgress(70);//设置seekbar的位置值 audioTrack.setStereoVolume(0.7f, 0.7f);//设置当前音量大小 skbVolume.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { @Override public void onStopTrackingTouch(SeekBar seekBar) { float vol=(float)(seekBar.getProgress())/(float)(seekBar.getMax()); audioTrack.setStereoVolume(vol, vol);//设置音量 } @Override public void onStartTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { // TODO Auto-generated method stub } }); } @Override protected void onDestroy() { super.onDestroy(); android.os.Process.killProcess(android.os.Process.myPid()); } class ClickEvent implements View.OnClickListener { @Override public void onClick(View v) { if (v == btnRecord) { isRecording = true; new RecordPlayThread().start();// 开一条线程边录边放 } else if (v == btnStop) { isRecording = false; } else if (v == btnExit) { isRecording = false; testRecord.this.finish(); } } } class RecordPlayThread extends Thread { public void run() { try { byte[] buffer = new byte[recBufSize]; audioRecord.startRecording();//开始录制 audioTrack.play();//开始播放 while (isRecording) { //从MIC保存数据到缓冲区 int bufferReadResult = audioRecord.read(buffer, 0, recBufSize); byte[] tmpBuf = new byte[bufferReadResult]; System.arraycopy(buffer, 0, tmpBuf, 0, bufferReadResult); //写入数据即播放 audioTrack.write(tmpBuf, 0, tmpBuf.length); } audioTrack.stop(); audioRecord.stop(); } catch (Throwable t) { Toast.makeText(testRecord.this, t.getMessage(), 1000); } } }; }感谢各位的阅读！关于“Android如何实现边录边播应用”这篇文章就分享到这里了，希望以上内容可以对大家有一定的帮助，让大家可以学到更多知识，如果觉得文章不错，可以把它分享出去让更多的人看到吧！
