Question

我正在开发一个应用程序，我需要从捕获模式转换到录制模式（视频），反之亦然。

请帮助我，我在这里很无礼，如果有任何可用的教程，请建议我。

任何形式的帮助表示赞赏。谢谢。

Answer 1

使用此方法以视频模式打开相机

  private void dispatchTakeVideoIntent() {
        Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
        if (takeVideoIntent.resolveActivity(getPackageManager()) != null) {
            startActivityForResult(takeVideoIntent, 1);
        }
    }

请仔细阅读此网址以获取更多video basics

使用以下课程

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

    MediaRecorder recorder;
    SurfaceHolder holder;
    boolean recording=false;
    @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_PORTRAIT);

        recorder = new MediaRecorder();// Instantiate our media recording object
        initialiseRecorder();
        setContentView(R.layout.view);

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

        cameraView.setClickable(true);
        cameraView.setOnClickListener((OnClickListener) this);
    }

    private void initialiseRecorder() {
        File OutputFile = new File(Environment.getExternalStorageDirectory().getPath());
        String video= "/DCIM/100MEDIA/Video";
        CamcorderProfile cpHigh = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);
         recorder.setProfile(cpHigh);        

        recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);// generally used also includes h264 and best for flash
        recorder.setOutputFile(OutputFile.getAbsolutePath()+video+".3gp");
       recorder.setMaxDuration(600000);
    }
    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) {
        if (recording) {
            recorder.stop();
            recording = false;
            initialiseRecorder();
            prepareRecorder();
            Toast display = Toast.makeText(this, "Stopped Recording", Toast.LENGTH_SHORT);// toast shows a display of little sorts
            display.show();
        } else {
            recorder.start();
            recording = true;
        }
    }
    public void surfaceCreated(SurfaceHolder holder) {
        initialiseRecorder();
        prepareRecorder();
    }
    public void surfaceChanged(SurfaceHolder holder, int format, int width,
            int height) {
    }
    public void surfaceDestroyed(SurfaceHolder holder) {
        if (recording) {
            recorder.stop();
            recording = false;
        }
        recorder.release();
        finish();
    }

}

Answer 2

创建一个布尔变量Boolean video = false;现在，根据开关状态，切换变量的值。然后，只要您想开始录制/拍照，只需检查video变量的值。

static final int REQUEST_IMAGE_CAPTURE = 1;
static final int REQUEST_VIDEO_CAPTURE = 2;

if(video) {

    Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
    if (takeVideoIntent.resolveActivity(getPackageManager()) != null) {
        startActivityForResult(takeVideoIntent, REQUEST_VIDEO_CAPTURE);
    }
} else {
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
    }

}

如何以编程方式在Android中将捕获模式切换到视频模式

2 个答案: