ANDROID APP

162 บทที่ 6 เทคนิคการทำางานร่วมกับมัลติมีเดีย
String text_string;
final Handler mHandler = new Handler();
// Create runnable for posting
final Runnable mUpdateResults = new Runnable() {
public void run() {
updateResultsInUi(text_string);
}
};
private void updateResultsInUi(String update_txt) {
statusText.setText(update_txt);
}
private void record_thread() {
Thread thread = new Thread(new Runnable() {
public void run() {
text_string = "Starting";
mHandler.post(mUpdateResults);
record();
}
text_string = "Done";
mHandler.post(mUpdateResults);
}
});
thread.start();
private int audioEncoding = AudioFormat.ENCODING_PCM_16BIT;
int frequency = 11025; //Hz
int bufferSize = 50*AudioTrack.getMinBufferSize(frequency,
AudioFormat.CHANNEL_OUT_MONO, audioEncoding);
// Create new AudioRecord object to record the audio.
public AudioRecord audioRecord = new AudioRecord(
MediaRecorder.AudioSource.MIC,
frequency, AudioFormat.CHANNEL_IN_MONO,
audioEncoding, bufferSize);
// Create new AudioTrack object w/same parameters as AudioRecord obj
public AudioTrack audioTrack = new AudioTrack(
AudioManager.STREAM_MUSIC, frequency,
AudioFormat.CHANNEL_OUT_MONO,
audioEncoding, 4096,
AudioTrack.MODE_STREAM);
short[] buffer = new short[bufferSize];
public void record() {
try {
audioRecord.startRecording();