android 录音回放音乐播放

最新推荐文章于 2021-05-29 16:12:54 发布

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最新推荐文章于 2021-05-29 16:12:54 发布

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分类专栏： Android开发知识体系文章标签： MediaPlayer MediaRecorder 录音回放

本文链接：https://blog.youkuaiyun.com/caizhigui/article/details/50541718

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本文介绍如何创建一个名为LearnMediaRecord的Android工程，并将mp3文件复制到Activity_main.xml布局中，包括按钮操作实现录音、播放等功能。

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创建一个新工程LearnMediaRecord

Copy 几个mp3文件到

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"

    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"

    android:orientation="vertical"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

  

    <TextView android:text="录音状态" android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:id="@+id/tvRecord" />

  

    <LinearLayout

        android:orientation="horizontal"

        android:layout_width="match_parent"

        android:layout_height="wrap_content">

  

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="录音"

            android:onClick="doRecord"

            android:id="@+id/btnRecord" />

  

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="停止录音"

            android:onClick="doStopRecord"

            android:id="@+id/btnStopRecord" />

  

    </LinearLayout>

  

    <LinearLayout

        android:orientation="horizontal"

        android:layout_width="match_parent"

        android:layout_height="wrap_content">

  

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="录音回放"

            android:onClick="doPlayback"

            android:id="@+id/btnPlayback" />

  

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="停止回放"

            android:onClick="doStopPlayback"

            android:id="@+id/btnStopPlayback" />

    </LinearLayout>

  

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="后街男孩"

        android:id="@+id/button1"

        android:onClick="songBackStreetBoy"

        android:layout_gravity="center_horizontal" />

  

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="冲动的惩罚"

        android:onClick="songChongDong"

        android:id="@+id/button2"

        android:layout_gravity="center_horizontal" />

  

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="其实你不懂我的心"

        android:onClick="songQiShiBudong"

        android:id="@+id/button3"

        android:layout_gravity="center_horizontal" />

  

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="一路顺风"

        android:id="@+id/button4"

        android:onClick="songYiLuShunFeng"

        android:layout_gravity="center_horizontal" />

  

</LinearLayout>

MainActivity.java

package com.czg.com.learnmediarecorder;

  

  import android.media.MediaPlayer;

  import android.media.MediaRecorder;

  import android.os.Environment;

  import android.support.v7.app.AppCompatActivity;

  import android.os.Bundle;

  import android.view.View;

  import android.widget.Button;

  import android.widget.TextView;

  import android.widget.Toast;

  

  import java.io.File;

  import java.io.IOException;

  

  public class MainActivity extends AppCompatActivity {

    TextView tvRecord;

    MediaPlayer player;

    MediaRecorder recorder;

    private String OUTPUT_FILE;// 外存file path

  

  

  

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

  

        OUTPUT_FILE= Environment.getExternalStorageDirectory().toString()+"/OutputRocord.3gpp";

  

        tvRecord= (TextView) findViewById(R.id.tvRecord);

  

    }

  

  

  

    public void doRecord(View view) {

        ditchMediaRecorder();

        File outFile=new File(OUTPUT_FILE);

  

        if (outFile.exists())

            outFile.delete();

  

        recorder= new MediaRecorder();

        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);

        recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);

        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

        recorder.setOutputFile(OUTPUT_FILE);

        tvRecord.setText("录音中。。。");

  

  

        try {

            recorder.prepare();

            recorder.start();

  

        } catch (IOException e) {

            e.printStackTrace();

            Toast.makeText(getApplicationContext(),"录音失败:"+OUTPUT_FILE,Toast.LENGTH_LONG).show();

        }

    }

    private void ditchMediaRecorder() {

  

        if (recorder!=null)

            recorder.release();

    }

  

  

    public void doStopRecord(View view) {

        if (recorder!=null)

            recorder.stop();

        tvRecord.setText("");

    }

  

    public void doPlayback(View view) {

        ditchMediaPlayer();

        player=new MediaPlayer();

        try {

            player.setDataSource(OUTPUT_FILE);

            player.prepare();

            player.start();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

  

    private void ditchMediaPlayer() {

        if (player!=null){

            player.release();

        }

    }

  

  

    public void doStopPlayback(View view) {

        if (player!=null)

            player.stop();

    }

  

  

  

    public void songBackStreetBoy(View view) {

        if (player!=null){

            player.stop();

            player.release();

        }

        player=MediaPlayer.create(MainActivity.this,R.raw.backstreeboy);

        player.start();

        //设置播放结束事件

        player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {

            @Override

            public void onCompletion(MediaPlayer mp) {

                player.release();  //释放播放资源

            }

        });

    }

  

    public void songChongDong(View view) {

        if (player!=null){

            player.stop();

            player.release();

        }

        player=MediaPlayer.create(MainActivity.this,R.raw.chongdongcf);

        player.start();

        //设置播放结束事件

        player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {

            @Override

            public void onCompletion(MediaPlayer mp) {

                player.release();  //释放播放资源

            }

        });

    }

  

    public void songQiShiBudong(View view) {

        if (player!=null){

            player.stop();

            player.release();

        }

        player=MediaPlayer.create(MainActivity.this,R.raw.qishinibudong);

        player.start();

        //设置播放结束事件

        player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {

            @Override

            public void onCompletion(MediaPlayer mp) {

                player.release();  //释放播放资源

            }

        });

  

    }

  

    public void songYiLuShunFeng(View view) {

        if (player!=null){

            player.stop();

            player.release();

        }

        player=MediaPlayer.create(MainActivity.this,R.raw.yilushunfeng);

        player.start();

        //设置播放结束事件

        player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {

            @Override

            public void onCompletion(MediaPlayer mp) {

                player.release();  //释放播放资源

            }

        });

  

    }

  

  

  

}

AndroidManifest.xml中添加录音权限及sd开读写权限

<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" />