android studio获取mic

要在Android Studio中获取麦克风（mic）的输入，你可以使用Android的AudioRecord类。以下是一个示例代码片段，用于获取设备的麦克风音频输入：

import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;

public class MainActivity extends AppCompatActivity {
    private static final int RECORDER_SAMPLE_RATE = 44100; // 采样率
    private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_MONO; // 单声道
    private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT; // 16位PCM编码

    private AudioRecord audioRecord;
    private boolean isRecording = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        // 初始化AudioRecord对象
        int bufferSize = AudioRecord.getMinBufferSize(RECORDER_SAMPLE_RATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING);
        audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, RECORDER_SAMPLE_RATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, bufferSize);
        
        // 开始录制
        startRecording();
    }
    
    private void startRecording() {
        isRecording = true;
        audioRecord.startRecording();
        
        // 开启一个线程读取录制的音频数据
        new Thread(new Runnable() {
            @Override
            public void run() {
                byte[] buffer = new byte[bufferSize];
                while (isRecording) {
                    int bytesRead = audioRecord.read(buffer, 0, bufferSize);
                    // 处理读取到的音频数据
                }
            }
        }).start();
    }
    
    private void stopRecording() {
        isRecording = false;
        audioRecord.stop();
        audioRecord.release();
    }
    
    @Override
    protected void onDestroy() {
        super.onDestroy();
        stopRecording();
    }
}

这段代码会在应用启动时初始化`AudioRecord`对象，并在单独的线程中持续读取麦克风输入的音频数据。你可以在`while`循环中处理读取到的音频数据，例如进行声音分析、录制等操作。记得在应用销毁时停止录制并释放资源。