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아이디/비밀번호찾기

MediaPlayer 가로일 때 UI 숨기고 풀스크린 만들기

10년 전

가로일 땐 모든 UI와 상태바(StatusBar)까지 없애고 풀스크린으로 동영상 플레이를 하고자 한다면, 이런 방법도 괜찮다.

해당 Activity에 아래 속성을 추가한다.

android:screenOrientation="unspecified"
android:configChanges="orientation"
android:theme="@android:style/Theme.Black.NoTitleBar

자바 소스코드를 작성해보자.
package hansune.android.test;

import java.io.IOException;
import android.app.Activity;
import android.content.res.AssetFileDescriptor;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnBufferingUpdateListener;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.media.MediaPlayer.OnVideoSizeChangedListener;
import android.os.Bundle;
import android.util.Log;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageButton;
import android.widget.LinearLayout;

public class MoviePlayTestActivity extends Activity implements
OnBufferingUpdateListener, OnCompletionListener,
OnPreparedListener, OnVideoSizeChangedListener, SurfaceHolder.Callback {

    private int mVideoWidth;
    private int mVideoHeight;
    private SurfaceView mPreview;
    private SurfaceHolder holder;
    private MediaPlayer videoPlayer;
    private String path;
    private boolean mIsVideoSizeKnown = false;
    private boolean mIsVideoReadyToBePlayed = false;

    private MediaPlayer bgm;
    private ImageButton playBtn;
    private int pausePosition = -1;
    private boolean isCompletePlay = false;//동영상 플레이를 완료했는지요?
    private boolean isSurfaceDestroy = true;//Surface 가 없어졌는지요?

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        mPreview = (SurfaceView)findViewById(R.id.surfaceView1);
        holder = mPreview.getHolder();
        holder.addCallback(this);
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

        playBtn = (ImageButton)findViewById(R.id.playBtn);
        playBtn.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                if(!isCompletePlay) {
                    if(videoPlayer.isPlaying()) {
                        videoPlayer.pause();
                        bgm.pause();
                        playBtn.setImageResource(R.drawable.btn_play_big);
                    }
                    else {
                        videoPlayer.start();
                        bgm.start();
                        playBtn.setImageResource(R.drawable.btn_pause_big);
                    }
                }
                else
                {
                    pausePosition = -1;
                    playVideo(path);
                }
            }
        });
    }

    @Override
    public void onAttachedToWindow() {
        super.onAttachedToWindow();
        Window window = getWindow();
        window.setFormat(PixelFormat.RGBA_8888);
    }

    @Override
    protected void onPause() {

        if(videoPlayer != null && !isCompletePlay) {
            pausePosition = videoPlayer.getCurrentPosition();
            playBtn.setImageResource(R.drawable.btn_play_big);
            videoPlayer.pause();
        }
        if(bgm != null) bgm.pause();
        super.onPause();
    }

    @Override
    protected void onResume() {
        super.onResume();
        if(!isCompletePlay) {
            if(bgm != null) bgm.start();
            playBtn.setImageResource(R.drawable.btn_pause_big);
            playBtn.setEnabled(true);
            //재생 중이고 Surface 가 죽지 않았을 경우 플레이한다.
            //Surface 가 Destroy이 되면, surfaceCreated 에서 다시 생성된 후 플레이 되도록 한다.
            if(pausePosition != -1 && !isSurfaceDestroy) playVideo(path);
        }
    }

    @Override
    protected void onDestroy() {
        releaseMediaPlayer();
        doCleanUp();
        System.gc();
        if(bgm != null){
            bgm.release();
            bgm = null;
        }
        super.onDestroy();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        arrangeVideo();
    }

    private void arrangeVideo() {

        WindowManager wm = getWindowManager();
        if(wm == null) return;
        LinearLayout ll = (LinearLayout)findViewById(R.id.playBtnLayout);

        if(wm.getDefaultDisplay().getRotation() == Surface.ROTATION_90 || wm.getDefaultDisplay().getRotation() == Surface.ROTATION_270) {
            Log.d("dd", "landscape");
            ll.setVisibility(View.GONE);
            hideStatusBar();
        }
        else {
            Log.d("dd", "portrat");
            ll.setVisibility(View.VISIBLE);
            showStatusBar();
        }

        //
        int videoWidth = videoPlayer.getVideoWidth();
        int videoHeight = videoPlayer.getVideoHeight();
        Log.d("dd", "video :" + videoWidth + "/" + videoHeight);
        int screenWidth = getWindowManager().getDefaultDisplay().getWidth();
        int screenHeight = getWindowManager().getDefaultDisplay().getHeight();
        Log.d("dd", "screen : " +  screenWidth + "/" + screenHeight);

        android.view.ViewGroup.LayoutParams lp = mPreview.getLayoutParams();

        //portrat
        if(screenWidth < screenHeight) {
            lp.width = screenWidth;
            lp.height = (int)(((float)videoHeight / (float)videoWidth) * (float)screenWidth);
        }
        else {
            lp.width = (int)(((float)videoWidth / (float)videoHeight) * (float)screenHeight);
            lp.height = screenHeight;
        }
        Log.d("dd", lp.width + "/" + lp.height);
        mPreview.setLayoutParams(lp);
    }

    private void hideStatusBar() {
        WindowManager.LayoutParams attrs = getWindow().getAttributes();
        attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
        getWindow().setAttributes(attrs);
    }

    private void showStatusBar() {
        WindowManager.LayoutParams attrs = getWindow().getAttributes();
        attrs.flags &= ~WindowManager.LayoutParams.FLAG_FULLSCREEN;
        getWindow().setAttributes(attrs);
    }

    private void releaseMediaPlayer() {
        if (videoPlayer != null) {
            videoPlayer.release();
            videoPlayer = null;
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder surfaceholder, int i, int j, int k) {
        Log.d("dd", "surfaceChanged called");
        if(videoPlayer != null) {
            videoPlayer.setDisplay(surfaceholder);
            arrangeVideo();
        }
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        isSurfaceDestroy = false;
        //서페이스가 생성되면 영상재생을 실행한다.
        playVideo(path);
        Log.d("dd", "surfaceCreated called");
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder arg0) {
        isSurfaceDestroy = true;
        Log.d("dd", "surfaceDestroyed called");
    }

    @Override
    public void onVideoSizeChanged(MediaPlayer arg0, int width, int height) {

        Log.v("dd", "onVideoSizeChanged called");
        if (width == 0 || height == 0) {
            Log.e("dd", "invalid video width(" + width + ") or height(" + height + ")");
            return;
        }
        mIsVideoSizeKnown = true;
        mVideoWidth = width;
        mVideoHeight = height;
        if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
            startVideoPlayback();
            playBtn.setEnabled(true);
            playBtn.setImageResource(R.drawable.btn_pause_big);
        }
    }

    @Override
    public void onPrepared(MediaPlayer arg0) {
        Log.d("dd", "onPrepared called");
        mIsVideoReadyToBePlayed = true;
        if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
            startVideoPlayback();
            playBtn.setEnabled(true);
            playBtn.setImageResource(R.drawable.btn_pause_big);
        }
    }

    @Override
    public void onCompletion(MediaPlayer arg0) {
        Log.i("dd", "complete movie");
        playBtn.setEnabled(true);
        playBtn.setImageResource(R.drawable.btn_play_big);
        if(bgm != null) bgm.pause();
        pausePosition = -1;
        isCompletePlay = true;
    }

    @Override
    public void onBufferingUpdate(MediaPlayer arg0, int arg1) {

    }

    private void playVideo(String path) {
        doCleanUp();
        if(videoPlayer == null) videoPlayer = new MediaPlayer();
        videoPlayer.reset();
        mIsVideoSizeKnown = false;
        mIsVideoReadyToBePlayed = false;
        playBtn.setEnabled(false);
        try {

            AssetFileDescriptor afd = getAssets().openFd("example.mp4");
            videoPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
            videoPlayer.setDisplay(holder);
            videoPlayer.prepareAsync();
            videoPlayer.setOnBufferingUpdateListener(this);
            videoPlayer.setOnCompletionListener(this);
            videoPlayer.setOnPreparedListener(this);
            videoPlayer.setOnVideoSizeChangedListener(this);
            videoPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);

        } catch (IllegalArgumentException e) {
            Log.e("dd", e.getMessage());
        } catch (IllegalStateException e) {
            Log.e("dd", e.getMessage());
            //e.printStackTrace();
        } catch (IOException e) {
            Log.e("dd", e.getMessage());
            //e.printStackTrace();
        }

    }

    private void doCleanUp() {
        mVideoWidth = 0;
        mVideoHeight = 0;
        mIsVideoReadyToBePlayed = false;
        mIsVideoSizeKnown = false;
    }

    private void startVideoPlayback() {
        Log.v("dd", "startVideoPlayback");
        holder.setFixedSize(mVideoWidth, mVideoHeight);
        arrangeVideo();
        if(pausePosition != -1)videoPlayer.seekTo(pausePosition);
        pausePosition = -1;
        videoPlayer.start();

        // MediaPlayer 객체 생성
        if(bgm != null) {
            bgm.release();
            bgm = null;
        }
        bgm = new MediaPlayer();

        AssetFileDescriptor afd;
        try {
            afd = getAssets().openFd("background_music.mp3");
            bgm.setDataSource(afd.getFileDescriptor());
            bgm.prepare();

            bgm.setLooping(true);
            bgm.setAudioStreamType(AudioManager.STREAM_MUSIC);
            bgm.setVolume(0.5f, 0.5f);
            bgm.start();

        } catch (IOException e) {
            e.printStackTrace();
            return;
        }
    }
}

핵심.
1. 디바이스의 회전을 알기 위해 메니페스트 파일을 설정하는 것
2. 스크린의 가로세로 길이를 구하는 것(ex. getWindowManager().getDefaultDisplay().getWidth())
3. SurfaceView는 가로세로 크기를 wrap_content 으로 하나 match_parent 로 하나 큰 의미가 없다는 것. 소스의 크기에 좌우되게 하라.
4. StatusBar를 보이거나 숨기기
5. 재생 도중 홈 버튼을 누르거나 전원 버튼을 눌러서 앱이 멈추었다가, 다시 실행할 때 멈췄던 부분부터 다시 재생하게 하기. 이때 Surface 가 죽었는지 조심해야 한다.