first commit

FunctionRealize/Record/RecordActivity.java

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+package com.record;
+
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.View;
+import android.media.MediaRecorder;
+import android.os.Environment;
+import android.view.Window;
+import android.widget.Button;
+import android.widget.Toast;
+import java.io.File;
+import java.io.IOException;
+
+@SuppressLint("Registered")
+public class RecordActivity extends Activity implements View.OnClickListener {
+
+    Button startRecording, stopRecording, pauseRecording;//开始录音、停止录音、释放资源
+    MediaRecorder recorder;
+    File audioFile; //录音保存的文件
+    boolean isRecoding = false;// true 表示正在录音
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        requestWindowFeature(Window.FEATURE_NO_TITLE);
+        setContentView(R.layout.activity_main);
+        init();
+        initListener();
+    }
+
+    //初始化
+    public void init() {
+        stopRecording = (Button) this.findViewById(R.id.btn_stop);
+        startRecording = (Button) this.findViewById(R.id.btn_play);
+        pauseRecording = (Button) this.findViewById(R.id.btn_pause);
+        if (!path.exists()) {
+            path.mkdirs();
+        }
+    }
+    //初始化麦克风
+    private void InitMedia(){
+        recorder = new MediaRecorder();
+        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);//设置播放源 麦克风
+        recorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB); //设置输入格式 3gp
+        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); //设置编码AMR
+    }
+    //设置监听器
+    public void initListener() {
+        startRecording.setOnClickListener(this);
+        stopRecording.setOnClickListener(this);
+        pauseRecording.setOnClickListener(this);
+    }
+
+    //此处还应该对手机进行下判断，判断下手机里面有没有内存卡
+    //保存在SD卡下MediaRecorderTest文件夹中
+    File path = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/MediaRecorderTest");
+
+    //录音
+    public void recod() {
+        InitMedia();
+        int i = (int) (Math.random() * 10000);
+        String a = Integer.toString(i);
+        String b = "Voice";
+        String FileName = b + a;
+        try {
+            audioFile = new File(path, FileName + ".aac");
+            //audioFile=new File(path,"ycc.aac");
+            if (audioFile.exists()) {
+                audioFile.delete();
+            }
+            audioFile.createNewFile();//创建文件
+
+        } catch (Exception e) {
+            throw new RuntimeException("Couldn't create recording audio file", e);
+        }
+
+        recorder.setOutputFile(audioFile.getAbsolutePath()); //设置输出文件
+
+        try {
+            recorder.prepare();
+        } catch (IllegalStateException e) {
+            throw new RuntimeException("IllegalStateException on MediaRecorder.prepare", e);
+        } catch (IOException e) {
+            throw new RuntimeException("IOException on MediaRecorder.prepare", e);
+        }
+        isRecoding = true;
+        recorder.start();
+    }
+
+
+    public void onClick(View v) {
+        //开始录音
+        while (true){
+            if (v == startRecording) {
+                Toast.makeText(RecordActivity.this, "开始录音", Toast.LENGTH_SHORT).show();
+                recod();
+                break;
+            }
+
+            if (v == pauseRecording) {
+
+            }
+            //停止录音
+            if (v == stopRecording) {
+                if (isRecoding) {
+                    Toast.makeText(RecordActivity.this, "录音结束,文件已存至/MediaRecorderTest", Toast.LENGTH_SHORT).show();
+                    recorder.stop();//调用stop之后recorder会被清空，再次录音要再次初始化recorder
+                    break;
+                }
+            }
+        }
+    }
+}