<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="@+id/btn_control"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="開始錄音" />
</RelativeLayout>
MainActivity.java:
public class MainActivity extends AppCompatActivity {
private Button btn_control;
private boolean isStart = false;
private MediaRecorder mr = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn_control = (Button) findViewById(R.id.btn_control);
btn_control.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(!isStart){
startRecord();
btn_control.setText("停止錄製");
isStart = true;
}else{
stopRecord();
btn_control.setText("開始錄製");
isStart = false;
}
}
});
}
//開始錄製
private void startRecord(){
if(mr == null){
File dir = new File(Environment.getExternalStorageDirectory(),"sounds");
if(!dir.exists()){
dir.mkdirs();
}
File soundFile = new File(dir,System.currentTimeMillis()+".amr");
if(!soundFile.exists()){
try {
soundFile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
mr = new MediaRecorder();
mr.setAudioSource(MediaRecorder.AudioSource.MIC); //音頻輸入源
mr.setOutputFormat(MediaRecorder.OutputFormat.AMR_WB); //設置輸出格式
mr.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_WB); //設置編碼格式
mr.setOutputFile(soundFile.getAbsolutePath());
try {
mr.prepare();
mr.start(); //開始錄製
} catch (IOException e) {
e.printStackTrace();
}
}
}
//停止錄製,資源釋放
private void stopRecord(){
if(mr != null){
mr.stop();
mr.release();
mr = null;
}
}
}
最後別忘了在AndroidManifest.xml中添加下述權限:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
好的,就是這麼簡單~
在手機中設置麥克風權限及SD卡權限。