我想记录在Android上的声音，但它会创建（SD卡/文件名）的路径上的.mp3文件但是当我运行这个文件时，它doesen't发挥，因为它不记录的声音。

下面是我的code

 公共无效的onClick（视图v）{
        // TODO自动生成方法存根
        开关（v.getId（））{
        案例（R.id.Button01）：
            尝试 {
                //audio.start（）;
                startRecord用于（）;
            }赶上（IOException异常E）{
                // TODO自动生成的catch块
                e.printStackTrace（）;
            }
        案例（R.id.Button02）：
            //audio.stop（）;
            STO precord（）;
        }

    }
     私人无效startRecord用于（）抛出IllegalStateException异常，IOException异常{
           //记录=新MediaRecorder（）;
            recorder.setAudioSource（MediaRecorder.AudioSource.MIC）; //确定，所以我说的音源是麦克风，是它的Windows / Linux麦克风上的模拟器？
            recorder.setOutputFormat（MediaRecorder.OutputFormat.THREE_GPP）;
            recorder.setAudioEn codeR（MediaRecorder.AudioEn coder.AMR_NB）;
            recorder.setOutputFile（/ SD卡/音乐/+ System.currentTimeMillis的（）+AMR。）;
            。录音机prepare（）;
            recorder.start（）;
        }

        私人无效STO precord（）{
            recorder.stop（）;
          //recorder.release（）;
        }



}
 

清单文件

 ＆LT;使用-权限的Andr​​oid：名称=android.permission.RECORD_AUDIO/＆GT;
＆LT;使用-权限的Andr​​oid：名称=android.permission.WRITE_EXTERNAL_STORAG​​E/＆GT;
 

解决方案

参考的录制音频和播放录制的音频Android的音频捕获文档。

I am trying to record the voice in android But it will create the .mp3 file on the path (sdcard/filename) But when i run this file it doesen't play because it doesn't record the voice.

Here is My code

public void onClick(View v) {
        // TODO Auto-generated method stub
        switch(v.getId()){
        case(R.id.Button01):
            try {
                //audio.start();
                startRecord();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        case(R.id.Button02):
            //audio.stop();
            stopRecord();
        }

    }
     private void startRecord() throws IllegalStateException, IOException{
           // recorder = new MediaRecorder(); 
            recorder.setAudioSource(MediaRecorder.AudioSource.MIC);  //ok so I say audio source is the microphone, is it windows/linux microphone on the emulator? 
            recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); 
            recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); 
            recorder.setOutputFile("/sdcard/Music/"+System.currentTimeMillis()+".amr"); 
            recorder.prepare(); 
            recorder.start();      
        }

        private void stopRecord(){
            recorder.stop();
          //recorder.release();
        }



}

Manifest file

<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Refer to the Android Audio Capture documentation for recording audio and playing back the recorded audio.