비디오 레코더를 만들고 있는데 비디오 플레이어를 만들어 녹화 된 비디오를 미리보고 싶습니다. 나는 MediaPreview 클래스를 다음과 같은 방법을 생성 한 코드 from this page 수정 :Android : 비디오 플레이어를 만드는 방법?
public class MediaPreview extends Activity implements OnErrorListener,
OnBufferingUpdateListener,
OnCompletionListener, OnPreparedListener, SurfaceHolder.Callback{
private static final String TAG = "MediaPreview";
private MediaPlayer mp;
private SurfaceView mPreview;
private SurfaceHolder holder;
private Button btnPlay;
private Button btnPause;
private Button btnReset;
private Button btnStop;
private String mPath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.media_preview);
mPreview = (SurfaceView)findViewById(R.id.mPreview);
btnPlay = (Button)findViewById(R.id.btnPlay);
btnPause = (Button)findViewById(R.id.btnPause);
btnReset = (Button)findViewById(R.id.btnReset);
btnStop = (Button)findViewById(R.id.btnStop);
getPathFromParentDialog();
btnPlay.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
playVideo();
}
});
btnPause.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(mp != null){
mp.pause();
}
}
});
btnReset.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
if(mp != null){
mp.seekTo(0);
}
}
});
btnStop.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
if(mp != null){
mp.stop();
mp.release();
}
}
});
getWindow().setFormat(PixelFormat.TRANSPARENT);
holder = mPreview.getHolder();
holder.addCallback(this);
holder.setFixedSize(400, 300);
}
@Override
protected void onResume() {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
super.onResume();
}
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
if(mp != null){
mp.stop();
mp.release();
}
return false;
}
@Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {
// TODO Auto-generated method stub
}
@Override
public void onCompletion(MediaPlayer mp) {
// TODO Auto-generated method stub
}
@Override
public void onPrepared(MediaPlayer mp) {
// TODO Auto-generated method stub
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
private void playVideo() {
try{
mp = new MediaPlayer();
mp.setOnErrorListener(this);
mp.setOnBufferingUpdateListener(this);
mp.setOnCompletionListener(this);
mp.setOnPreparedListener(this);
mp.setAudioStreamType(2);
mp.setDisplay(mPreview.getHolder());
Runnable r = new Runnable(){
@Override
public void run() {
try{
setDataSource(mPath);
}
catch(Exception ex){
Log.e(TAG, ex.getMessage());
}
try {
mp.prepare();
Log.v(TAG, "Duration: ===> " + mp.getDuration());
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.e(TAG, e.getMessage());
}
mp.start();
}
};
new Thread(r).start();
}
catch(Exception ex){
String sDummy = ex.toString();
if(mp != null){
mp.stop();
mp.release();
}
}
}
private void setDataSource(String path) throws IOException {
if(!URLUtil.isNetworkUrl(mPath)){
mp.setDataSource(mPath);
}
else{
URL url = new URL(mPath);
URLConnection cn = url.openConnection();
cn.connect();
InputStream stream = cn.getInputStream();
if(stream == null){
throw new RuntimeException("stream is null");
}
File fileTemp = File.createTempFile("mediaplayerTmp", "dat");
String tempPath = fileTemp.getAbsolutePath();
FileOutputStream out = new FileOutputStream(fileTemp);
byte buf[] = new byte[128];
do{
int numRead = stream.read(buf);
if(numRead <= 0){
break;
}
out.write(buf, 0, numRead);
}while(true);
mp.setDataSource(tempPath);
try{
stream.close();
}
catch(Exception ex){
String sDummy = ex.toString();
}
}
}
private void getPathFromParentDialog()
{
Intent intent = getIntent();
mPath = intent.getExtras().getString(MediaLibrary.FILENAME);
}
}
코드가 성공적으로 (예외없이) 실행 until mp.start();
을하지만, 화면이 비어 (만 화면에 버튼이 있습니다).
누가 위의 코드에서 잘못되었거나 웹에서 사용할 수있는 예제가 있습니까?
정말 커프 오프 당신의 도움이
내부에서 호출
나는 비슷한 문제를 가지고 ... u는 나에게 친절이 링크를 제거 –