Android实现边录边播应用

本文实例为大家分享了android实现边录边播的具体代码，供大家参考，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);  
            }  
        }  
    };  
} 

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。