android - カスタムビデオ録画画面

Question

開始時にカスタムビデオ録画画面で録画を停止する独自のボタンと他のボタンを使用して自動的にビデオ録画を開始するアプリケーションを実装しようとしています。私が行ったことは、今までボタン付きのレイアウトを設計していましたが、バックグラウンドでビデオ録画画面を追加する方法..助けてください!

Answer 1

これが私がそれを達成した方法です：

public class MainActivity extends Activity implements SurfaceHolder.Callback {
    private MediaRecorder recorder;
    private SurfaceHolder surfaceHolder;
    private CamcorderProfile camcorderProfile;
    private Camera camera;
    boolean recording = false;
    boolean usecamera = true;
    boolean previewRunning = false;
    SurfaceView surfaceView;
    Button btnStart, btnStop;
    File root;
    File file;
    Boolean isSDPresent;
    SimpleDateFormat simpleDateFormat;
    String timeStamp;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        setContentView(R.layout.activity_main);
        initComs();
        actionListener();
    }

    private void initComs() {
        simpleDateFormat = new SimpleDateFormat("ddMMyyyyhhmmss");
        timeStamp = simpleDateFormat.format(new Date());
        camcorderProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);
        surfaceView = (SurfaceView) findViewById(R.id.preview);
        surfaceHolder = surfaceView.getHolder();
        surfaceHolder.addCallback(this);
        btnStop = (Button) findViewById(R.id.btn_stop);
        surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        isSDPresent = android.os.Environment.getExternalStorageState().equals(
                android.os.Environment.MEDIA_MOUNTED);

    }

    public static float megabytesAvailable(File f) {
        StatFs stat = new StatFs(f.getPath());
        long bytesAvailable = (long) stat.getBlockSize()
                * (long) stat.getAvailableBlocks();
        return bytesAvailable / (1024.f * 1024.f);
    }



    private void actionListener() {
        btnStop.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                if (recording) {
                    recorder.stop();
                    if (usecamera) {
                        try {
                            camera.reconnect();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                    // recorder.release();
                    recording = false;
                    // Let's prepareRecorder so we can record again
                    prepareRecorder();
                }

            }
        });
    }

    private void prepareRecorder() {
        recorder = new MediaRecorder();
        recorder.setPreviewDisplay(surfaceHolder.getSurface());
        if (usecamera) {
            camera.unlock();
            recorder.setCamera(camera);
        }
        recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
        recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);

        recorder.setProfile(camcorderProfile);

        if (camcorderProfile.fileFormat == MediaRecorder.OutputFormat.MPEG_4) {
            recorder.setOutputFile("/sdcard/XYZApp/" + "XYZAppVideo" + ""
                    + new SimpleDateFormat("ddMMyyyyHHmmss").format(new Date())
                    + ".mp4");
        } else if (camcorderProfile.fileFormat == MediaRecorder.OutputFormat.MPEG_4) {
            recorder.setOutputFile("/sdcard/XYZApp/" + "XYZAppVideo" + ""
                    + new SimpleDateFormat("ddMMyyyyHHmmss").format(new Date())
                    + ".mp4");
        } else {
            recorder.setOutputFile("/sdcard/XYZApp/" + "XYZAppVideo" + ""
                    + new SimpleDateFormat("ddMMyyyyHHmmss").format(new Date())
                    + ".mp4");
        }

        try {
            recorder.prepare();
        } catch (IllegalStateException e) {
            e.printStackTrace();
            finish();
        } catch (IOException e) {
            e.printStackTrace();
            finish();
        }
    }

    public void surfaceCreated(SurfaceHolder holder) {
        System.out.println("onsurfacecreated");

        if (usecamera) {
            camera = Camera.open();

            try {
                camera.setPreviewDisplay(holder);
                camera.startPreview();
                previewRunning = true;
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }

    public void surfaceChanged(SurfaceHolder holder, int format, int width,
            int height) {
        System.out.println("onsurface changed");

        if (!recording && usecamera) {
            if (previewRunning) {
                camera.stopPreview();
            }

            try {
                Camera.Parameters p = camera.getParameters();

                p.setPreviewSize(camcorderProfile.videoFrameWidth,
                        camcorderProfile.videoFrameHeight);
                p.setPreviewFrameRate(camcorderProfile.videoFrameRate);

                camera.setParameters(p);

                camera.setPreviewDisplay(holder);
                camera.startPreview();
                previewRunning = true;
            } catch (IOException e) {
                e.printStackTrace();
            }

            prepareRecorder();
            if (!recording) {
                recording = true;
                recorder.start();
            }
        }
    }

    public void surfaceDestroyed(SurfaceHolder holder) {
        if (recording) {
            recorder.stop();
            recording = false;
        }
        recorder.release();
        if (usecamera) {
            previewRunning = false;
            // camera.lock();
            camera.release();
        }
        finish();
    }
}

Answer 2

この方法はフラグメントを使用しています:

public class CaptureVideo extends Fragment implements OnClickListener, SurfaceHolder.Callback{

    private Button btnStartRec;
    MediaRecorder recorder;
    SurfaceHolder holder;
    boolean recording = false;
    private int randomNum;


     public void onCreate(Bundle savedInstanceState)
     {
        super.onCreate(savedInstanceState);

     } 

     public void onActivityCreated(Bundle savedInstanceState) 
     {      
         super.onActivityCreated(savedInstanceState);

     }  

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View view001 = inflater.inflate(R.layout.capture_video,container,false);
        recorder = new MediaRecorder();
        initRecorder();        
        btnStartRec = (Button) view001.findViewById(R.id.btnCaptureVideo);
        btnStartRec.setOnClickListener(this);
        SurfaceView cameraView = (SurfaceView)view001.findViewById(R.id.surfaceCamera);
        holder = cameraView.getHolder();
        holder.addCallback(this);
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
        cameraView.setClickable(true);
        cameraView.setOnClickListener(this);        

        return view001;
    }

    @SuppressLint({ "SdCardPath", "NewApi" })
    private void initRecorder() {

        Random rn = new Random();
        int maximum = 10000000;
        int minimum = 00000001;
        int range = maximum  - minimum  + 1;
        randomNum =  rn.nextInt(range) + minimum + 1 - 10;        

        recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

        recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
        recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);

        if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) {
            recorder.setOrientationHint(90);//plays the video correctly
        }else{
            recorder.setOrientationHint(180);
        }


        recorder.setOutputFile("/sdcard/MediaAppVideos/"+randomNum+".mp4");

    }

    private void prepareRecorder() {
        recorder.setPreviewDisplay(holder.getSurface());
        try {
            recorder.prepare();
        } catch (IllegalStateException e) {
            e.printStackTrace();
            //finish();
        } catch (IOException e) {
            e.printStackTrace();
            //finish();
        }
    }

    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.btnCaptureVideo:          
                try{
                    if (recording) {
                        recorder.stop();
                        recording = false;
                        // Let's initRecorder so we can record again
                        //initRecorder();
                        //prepareRecorder();
                    } else {
                        recording = true;
                        recorder.start();                   
                    }

                }catch(Exception e){

                }

        default:
            break;

        }
    }

    public void surfaceCreated(SurfaceHolder holder) {
        prepareRecorder();
    }


    public void surfaceChanged(SurfaceHolder holder, int format, int width,
            int height) {
    }

    public void surfaceDestroyed(SurfaceHolder holder) {
        try {
            if (recording) {
                recorder.stop();
                recording = false;
            }
            recorder.release();
            // finish();
        } catch (Exception e) {

        }

    }


}

xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <SurfaceView
    android:id="@+id/surfaceCamera"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

    <Button
        android:id="@+id/btnCaptureVideo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:text="Start Recording" />

</RelativeLayout>