MediaRecorder不好用求高手告知，本人新手，还望详细指导。app在模拟器里一点就退

wangxl950103 2017-05-14 01:00:10

package com.example.saoshen.myaudiorecorder;



import android.content.Context;

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.TextView;

import android.widget.Toast;



import java.io.BufferedWriter;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.text.DateFormat;

import java.util.Calendar;

import java.util.Locale;



public class MainActivity extends AppCompatActivity {

    private TextView start;

    private TextView stop;

    private MediaRecorder mediaRecorder;

    private FileOutputStream out;

    private  BufferedWriter writer;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        start = (TextView) findViewById(R.id.start_txt);

        stop = (TextView) findViewById(R.id.stop_txt);

        start.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {



               // File file = new File("/data/data/com.example.saoshen.myaudiorecorder/files/","new.amr");

                File file = new File(getApplicationContext().getFilesDir(),"new.amr");

                Toast.makeText(getApplicationContext(),"luyinzhong:"+file.getAbsolutePath(),Toast.LENGTH_LONG).show();

                mediaRecorder = new MediaRecorder();

                mediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);

                mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);

                mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);

                mediaRecorder.setOutputFile(file.getAbsolutePath());

                

                mediaRecorder.start();

                start.setText("录音中.");

            }

        });

        stop.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                if (mediaRecorder !=null){

                    mediaRecorder.stop();

                    mediaRecorder.release();

                    mediaRecorder = null;

                    start.setText("开始");

                    Toast.makeText(getApplicationContext(),"录音完毕",Toast.LENGTH_LONG).show();

                }

            }

        });

    }

}