为什么一按录音按钮，显示开始录音接着就结束录音？

Question

package com.cbt.SHDemo;

import java.io.File;
import java.util.Date;

import com.cbt.SHDemo.EnvActivity.BackLoginListener;

import android.app.Activity;
import android.content.Intent;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class SleepActivity extends Activity {
private MediaPlayer mPlayer = null;
public String path = "";
private ImageButton bt_start;
private Button play_start;
private Button stop_play;
private Button exit;
private TextView Text_path;
private TextView Text_size;
private TextView Text_time;
private LinearLayout mlinearLayout;
private MediaRecorder mediaRecorder = null;
Date mdata1;
Date mdata2;
long time1;
long cha;
long time2;
private boolean isruning = false; // 定义一个布尔类型的变量来监控是否正在录音

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.sleep);
    bt_start = (ImageButton) findViewById(R.id.start);
    stop_play = (Button) findViewById(R.id.stop_play);
    play_start = (Button) findViewById(R.id.start_play);
    exit = (Button) findViewById(R.id.exit);
    exit.setOnClickListener(new BackLoginListener());
    Text_path = (TextView) findViewById(R.id.textlujing);
    Text_size = (TextView) findViewById(R.id.textsize);
    Text_time = (TextView) findViewById(R.id.texttime);
    mlinearLayout = (LinearLayout) findViewById(R.id.stoplin);

    mlinearLayout.setVisibility(View.GONE);

    bt_start.setOnTouchListener(new OnTouchListener() {

        public boolean onTouch(View v, MotionEvent event) {
            int i = event.getAction();
            switch (i) {
            case MotionEvent.ACTION_DOWN:
                Toast.makeText(SleepActivity.this, "开启录音...",
                        Toast.LENGTH_SHORT).show();
                mediaRecorder = null;
                mdata1 = new Date();
                time1 = mdata1.getTime(); // 当前时间
                System.out.println("当前时间为1：" + time1);
                record();
                break;
            case MotionEvent.ACTION_UP:
                if (isruning) { // 如果正在录音
                    Toast.makeText(SleepActivity.this, "终止录音...",
                            Toast.LENGTH_SHORT).show();
                    mediaRecorder.stop(); // 停止录音
                    mediaRecorder.release(); // 释放资源
                    mlinearLayout.setVisibility(View.VISIBLE); // 可见
                    information();
                    mdata2 = new Date();

                    time2 = mdata2.getTime(); // 当前时间
                    System.out.println("当前时间为2：" + time2);
                    cha = (time2 - time1) / 1000;
                    System.out.println("时间差为：" + cha + "秒");
                    Text_time.setText(cha + " 秒");
                }
                break;
            default:
                break;
            }

            return false;
        }
    });

    play_start.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            System.out.println("play_start");
            Toast.makeText(SleepActivity.this, "播放录音...", Toast.LENGTH_SHORT)
                    .show();
            mPlayer = null;
            startPlaying();

        }
    });
    stop_play.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            stopPlaying();

        }
    });



}

// 该方法 是用来是实现录音功能并保存到制定文件中
class BackLoginListener implements OnClickListener {

    @Override
    public void onClick(View v) {
        Intent intent = new Intent();
        intent.setClass(SleepActivity.this, HomePage.class);
        startActivity(intent);
        SleepActivity.this.finish();
    }
}
public void record() {

    if (mediaRecorder == null) {
        mediaRecorder = new MediaRecorder(); // 判断是都为空 如果为空new 一个对象
        mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); // 设置输入源为麦克风
        mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT); // 设置输出格式
        mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); // 设置音频的编码
                                                                            // 默认
        // 创建一个临时文件来存储音频
        path = Environment.getExternalStorageDirectory().getPath()
                + "/test_Audio.mp3";
        mediaRecorder.setOutputFile(path);
        // mediaRecorder.getMaxAmplitude() 获取文件的大小
        try {
            mediaRecorder.prepare(); // 准备录音
        } catch (Exception e) {
            e.printStackTrace();
        }
        mediaRecorder.start(); // 开启录音
        isruning = true; // 正在录音
    }
}

private void startPlaying() {
    try {
        mPlayer = new MediaPlayer();
        // 设置要播放的文件
        mPlayer.setDataSource(path);
        mPlayer.prepare();
        mPlayer.start();

    } catch (Exception e) {
        mPlayer.release();
        e.printStackTrace();
    }
}

// 停止播放
private void stopPlaying() {
    if (mPlayer == null) {
        Toast.makeText(SleepActivity.this, "您还没播放任何音频", Toast.LENGTH_SHORT)
                .show();
    } else {

        mPlayer.release();
        mPlayer = null;
        play_start.setEnabled(true);
        Toast.makeText(SleepActivity.this, "已终止播放", Toast.LENGTH_SHORT)
                .show();
    }

}

// 设置文件信息布局information

public void information() {
    File mfile = new File(path);
    Text_path.setText(path);
    getFilesize size = new getFilesize();
    long msize = size.getFileSize(mfile) / 1024; // 获得文件大小
    Text_size.setText(msize + "KB");

}

}

Answer 1

http://www.imooc.com/qadetail/87472