MediaRecorder录音

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1.Java代码

package com.gst.user.application;import android.app.AlarmManager;import android.app.PendingIntent;import android.content.Context;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.media.AudioRecord;import android.media.MediaPlayer;import android.media.MediaRecorder;import android.net.Uri;import android.os.AsyncTask;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.os.SystemClock;import android.support.design.widget.FloatingActionButton;import android.support.design.widget.Snackbar;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.Toolbar;import android.view.View;import android.widget.Button;import android.widget.Chronometer;import android.widget.ImageView;import android.widget.ProgressBar;import android.widget.TextView;import android.widget.Toast;import org.androidpn.client.ServiceManager;import java.io.File;import java.io.IOException;import java.io.InputStream;import java.net.URL;import java.net.URLConnection;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Timer;import java.util.TimerTask;public class TempActivity extends AppCompatActivity implements View.OnClickListener{    Button button_record;    Button button_stop;    Button button_play;    Button button_delete;    MediaPlayer mediaPlayer;    File recordAudioFile;    MediaRecorder mediaRecorder;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_temp);        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);        setSupportActionBar(toolbar);        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);        fab.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)                        .setAction("Action", null).show();            }        });        button_record=(Button)findViewById(R.id.button3);        button_stop=(Button)findViewById(R.id.button4);        button_play=(Button)findViewById(R.id.button5);        button_delete=(Button)findViewById(R.id.button6);        button_play.setOnClickListener(this);        button_record.setOnClickListener(this);        button_stop.setOnClickListener(this);        button_delete.setOnClickListener(this);  }    @Override    public void onClick(View v) {        switch (v.getId()){            case R.id.button3:                //临时文件名                try {                    recordAudioFile=File.createTempFile("audio",".amr");                } catch (IOException e) {                    e.printStackTrace();                }                mediaRecorder=new MediaRecorder();                //设置音频来源                mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);                //设置输出格式                mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);                //设置编码方式                mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);                //设置输出文件路径                mediaRecorder.setOutputFile(recordAudioFile.getAbsolutePath());                try {                    mediaRecorder.prepare();                } catch (IOException e) {                    e.printStackTrace();                }                mediaRecorder.start();                Toast.makeText(this, "开始录音.", Toast.LENGTH_SHORT).show();                break;            case R.id.button4:                if (mediaRecorder!=null){                    mediaRecorder.stop();                    mediaRecorder.release();                    mediaRecorder=null;                    Toast.makeText(this, "停止录音.", Toast.LENGTH_LONG).show();                }                break;            case R.id.button5:                mediaPlayer=new MediaPlayer();                try {                    mediaPlayer.setDataSource(recordAudioFile.getAbsolutePath().toString());                    mediaPlayer.prepare();                } catch (IOException e) {                    e.printStackTrace();                }                mediaPlayer.start();                break;            case R.id.button6:                if (recordAudioFile.delete()){                    Toast.makeText(this, "文件删除成功", Toast.LENGTH_LONG).show();                }                break;            default:                break;        }    }}

2.布局文件

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:paddingBottom="@dimen/activity_vertical_margin"    app:layout_behavior="@string/appbar_scrolling_view_behavior"    tools:showIn="@layout/activity_temp" tools:context="com.gst.user.application.TempActivity">    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="录音"        android:id="@+id/button3"        android:layout_alignParentTop="true"        android:layout_centerHorizontal="true" />    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="停止"        android:id="@+id/button4"        android:layout_below="@+id/button3"        android:layout_centerHorizontal="true"        android:layout_marginTop="54dp" />    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="播放"        android:id="@+id/button5"        android:layout_below="@+id/button4"        android:layout_centerHorizontal="true"        android:layout_marginTop="52dp" />    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="删除"        android:id="@+id/button6"        android:layout_marginTop="51dp"        android:layout_below="@+id/button5"        android:layout_alignLeft="@+id/button5"        android:layout_alignStart="@+id/button5" /></RelativeLayout>

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