Android 模仿微信长按录音功能

布局就两个button这里不多介绍了。

下面是activity内的代码

<span style="color:#808080;"></span><pre name="code" class="java">package com.example.forevercloud.myapplication;

import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import java.io.IOException;

public class MainActivity extends AppCompatActivity {
    //语音文件保存路径
    private String FileName = null;

    //语音操作对象
    private MediaPlayer mPlayer = null;
    private MediaRecorder mRecorder = null;

    private Button startRecord;
    private Button startPlay;

    private int isLongClick=0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //开始录音
        startRecord = (Button)findViewById(R.id.startRecord);
        startRecord.setOnLongClickListener(new startRecordListener());
        startRecord.setOnClickListener(new stopRecordListener());

        //开始播放
        startPlay = (Button)findViewById(R.id.startPlay);
        startPlay.setOnClickListener(new startPlayListener());


        //设置sdcard的路径
        FileName = Environment.getExternalStorageDirectory().getAbsolutePath();
        FileName += "/audio.3gp";

    }
    //长按录音，松开后自动执行短按操作
    class startRecordListener implements View.OnLongClickListener {
        @Override
        public boolean onLongClick(View v) {
            isLongClick = 1;
            mRecorder = new MediaRecorder();
            mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
            mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
            mRecorder.setOutputFile(FileName);
            mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
            try {
                mRecorder.prepare();
            } catch (IOException e) {
                Log.e("Audio Tag", "prepare() failed");
            }
            mRecorder.start();
            return false; //KeyPoint：setOnLongClickListener中return的值决定是否在长按后再加一个短按动作，true为不加短按,false为加入短按
        }
    }
    //短按停止录音，直接点击短按无效
    class stopRecordListener implements View.OnClickListener {
        @Override
        public void onClick(View v) {
            if(isLongClick==1){
                mRecorder.stop();
                mRecorder.release();
                mRecorder = null;
                isLongClick=0;
            }
        }
    }
    //播放录音
    class startPlayListener implements View.OnClickListener {
        @Override
        public void onClick(View v) {
            mPlayer = new MediaPlayer();
            try{
                mPlayer.setDataSource(FileName);
                mPlayer.prepare();
                mPlayer.start();
            }catch(IOException e){
                Log.e("Audio Tag","播放失败");
            }
        }
    }
}

 
 
 
 
 
 
下面记得在mainfest.xml里添加权限
 
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
 
 
 
总结下：
 
实现长按录音，放开之后结束录音有多种方式。这里展示最简单的一种，长按(录音)之后加入自动短按(结束录音)，一个操作两个行为。这里需要了解OnLongClick return值的含义：return true为不加短按,false为加入短按