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
1.Android.mk
LOCAL_PATH:= $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE_TAGS := optional LOCAL_SRC_FILES := $(call all-subdir-java-files) LOCAL_PACKAGE_NAME := testRecord include $(BUILD_PACKAGE)
2.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>
3.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>
4.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>
5.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 {
/** Called when the activity is first created. */
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！
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