Example usage for android.hardware Camera getNumberOfCameras

Introduction

In this page you can find the example usage for android.hardware Camera getNumberOfCameras.

Prototype

public native static int getNumberOfCameras();

Source Link

Document

Returns the number of physical cameras available on this device.

Usage

From source file:com.cellbots.logger.LauncherActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    ///< Bind the MetaWear service when the activity is created
    setContentView(R.layout.main);//from  w ww .j a  v a  2  s .  c o  m

    useZipCheckbox = (CheckBox) findViewById(R.id.useZip);

    final Activity self = this;
    Button launchVideoFrontButton;
    launchVideoFrontButton = (Button) findViewById(R.id.launchVideoFront);
    launchVideoFrontButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            launchLoggingActivity(LoggerActivity.MODE_VIDEO_FRONT, useZipCheckbox.isChecked());
        }
    });
    Button launchVideoBackButton = (Button) findViewById(R.id.launchVideoBack);
    launchVideoBackButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            launchLoggingActivity(LoggerActivity.MODE_VIDEO_BACK, useZipCheckbox.isChecked());
        }
    });

    Button connectMW = (Button) findViewById(R.id.mwconnect);
    connectMW.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            new MWScannerFragment().show(getFragmentManager(), "metawear_scanner_fragment");
        }
    });

    final EditText pictureDelayEditText = (EditText) findViewById(R.id.pictureDelay);
    Button launchPictureButton = (Button) findViewById(R.id.launchPicture);
    launchPictureButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent i = new Intent(self, LoggerActivity.class);
            i.putExtra(LoggerActivity.EXTRA_MODE, LoggerActivity.MODE_PICTURES);
            i.putExtra(LoggerActivity.EXTRA_USE_ZIP, useZipCheckbox.isChecked());
            int delay = 30;
            try {
                delay = Integer.parseInt(pictureDelayEditText.getText().toString());
            } catch (Exception e) {
                Toast.makeText(self, "Error parsing picture delay time. Using default delay of 30 seconds.",
                        Toast.LENGTH_LONG).show();
            }
            i.putExtra(LoggerActivity.EXTRA_PICTURE_DELAY, delay);
            startActivity(i);
            finish();
        }
    });
    // The code we are using for taking video through the front camera
    // relies on APIs added in SDK 9. Don't offer the front video option to
    // users on devices older than that OR to devices who have only one
    // camera. Currently assume that if only one camera is present, it is
    // the back camera.
    if (Build.VERSION.SDK_INT < 9 || Camera.getNumberOfCameras() == 1) {
        launchVideoFrontButton.setVisibility(View.GONE);
    }
}

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From source file:uk.ac.horizon.artcodes.camera.CameraView.java

public void setDetector(Detector processor, Experience experience) {
    this.experience = experience;
    this.detector = processor;
    if (detector != null) {
        if (camera == null) {
            createCamera();/*from ww  w  .  j a v a 2  s .c o  m*/
        }
        if (camera != null) {
            cameraIsFocused = !deviceNeedsTapToFocus;
            camera.addCallbackBuffer(detector.createBuffer(info, surfaceWidth, surfaceHeight));
            camera.setPreviewCallbackWithBuffer(new Camera.PreviewCallback() {
                @Override
                public void onPreviewFrame(final byte[] data, final Camera camera) {

                    boolean focusedOnThisFrame = false;

                    if (deviceNeedsTapToFocus || !cameraIsFocused) {
                        synchronized (cameraFocusLock) {
                            while (!cameraIsFocused) {
                                try {
                                    Log.i("FOCUS", "cameraFocusLock.wait(); Thread: "
                                            + Thread.currentThread().getName());
                                    focusedOnThisFrame = true;
                                    cameraFocusLock.wait();
                                } catch (InterruptedException ignored) {
                                }
                            }
                            Log.i("FOCUS", "notified Thread: " + Thread.currentThread().getName());
                        }
                    }

                    if (cameraIsFocused) {
                        Log.i("FOCUS", "cameraIsFocused test: " + cameraIsFocused);
                        if (!focusedOnThisFrame) {
                            detector.setData(data);
                        }
                        camera.addCallbackBuffer(data);
                    }
                }
            });
        }

        if (Camera.getNumberOfCameras() > 1) {
            detector.getSettings().add(new DetectorSetting() {
                @Override
                public void nextValue() {
                    stopCamera();
                    facing = 1 - facing;
                    startCamera();
                }

                @Override
                public int getIcon() {
                    switch (facing) {
                    case Camera.CameraInfo.CAMERA_FACING_BACK:
                        return R.drawable.ic_camera_rear_24dp;
                    case Camera.CameraInfo.CAMERA_FACING_FRONT:
                        return R.drawable.ic_camera_front_24dp;
                    }
                    return 0;
                }

                @Override
                public int getText() {
                    switch (facing) {
                    case Camera.CameraInfo.CAMERA_FACING_BACK:
                        return R.string.camera_rear;
                    case Camera.CameraInfo.CAMERA_FACING_FRONT:
                        return R.string.camera_front;
                    }

                    return 0;
                }
            });
        }
    }
}

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From source file:com.groundupworks.partyphotobooth.fragments.CaptureFragment.java

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

    final KioskActivity activity = (KioskActivity) getActivity();
    final Context appContext = activity.getApplicationContext();
    final Bundle args = getArguments();
    final int totalFrames = args.getInt(FRAGMENT_BUNDLE_KEY_TOTAL_FRAMES);
    final int currentFrame = args.getInt(FRAGMENT_BUNDLE_KEY_CURRENT_FRAME);

    /*/*from   w  w w. j  a  v a2  s  .  c  o  m*/
     * Select camera from preference.
     */
    // Get from preference.
    PreferencesHelper preferencesHelper = new PreferencesHelper();
    PhotoBoothMode mode = preferencesHelper.getPhotoBoothMode(appContext);

    int cameraPreference = CameraInfo.CAMERA_FACING_FRONT;
    if (PhotoBoothMode.PHOTOGRAPHER.equals(mode)) {
        cameraPreference = CameraInfo.CAMERA_FACING_BACK;
    }

    // Default to first camera available.
    final int numCameras = Camera.getNumberOfCameras();
    if (numCameras > 0) {
        mCameraId = 0;
    }

    // Select preferred camera.
    CameraInfo cameraInfo = new CameraInfo();
    for (int cameraId = 0; cameraId < numCameras; cameraId++) {
        Camera.getCameraInfo(cameraId, cameraInfo);

        // Break on finding the preferred camera.
        if (cameraInfo.facing == cameraPreference) {
            mCameraId = cameraId;
            break;
        }
    }

    /*
    * Initialize and set key event handlers.
    */
    mKeyEventHandler = new KioskActivity.KeyEventHandler() {
        @Override
        public boolean onKeyEvent(KeyEvent event) {
            final int keyCode = event.getKeyCode();
            if (keyCode == KeyEvent.KEYCODE_ENTER || keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
                mStartButton.dispatchKeyEvent(event);
                return true;
            }
            return false;
        }
    };
    activity.setKeyEventHandler(mKeyEventHandler);

    /*
     * Functionalize views.
     */
    // Configure start button and trigger behaviour.
    switch (mode) {
    case PHOTOGRAPHER:
        mStartButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                initiateCapture();
            }
        });
        mStartButton.setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                initiateCapture();
                return true;
            }
        });
        linkStartButton();
        break;
    case AUTOMATIC:
        if (currentFrame > 1) {
            // Auto-trigger when camera is ready and preview has started.
            mPreview.setOnPreviewListener(new CenteredPreview.OnPreviewListener() {
                @Override
                public void onStarted() {
                    if (isActivityAlive()) {
                        mPreview.post(new Runnable() {
                            @Override
                            public void run() {
                                if (isActivityAlive()) {
                                    initiateCountdownCapture();
                                }
                            }
                        });
                    }
                }

                @Override
                public void onStopped() {
                    // Do nothing.
                }
            });
            break;
        } else {
            // Fall through to self-serve behaviour. Do not break.
        }
    case SELF_SERVE:
    default:
        mStartButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                initiateCountdownCapture();
            }
        });
        mStartButton.setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                initiateCountdownCapture();
                return true;
            }
        });
        linkStartButton();
    }

    // Show frame count only if more than one frame is to be captured.
    if (totalFrames > 1) {
        String frameCountText = getString(R.string.capture__frame_count, currentFrame, totalFrames);
        mFrameCount.setTypeface(
                Theme.from(appContext, preferencesHelper.getPhotoBoothTheme(appContext)).getFont());
        mFrameCount.setText(frameCountText);
        mFrameCount.setVisibility(View.VISIBLE);
    }
}

---

From source file:com.fatelon.partyphotobooth.fragments.CaptureFragment.java

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

    final KioskActivity activity = (KioskActivity) getActivity();
    final Context appContext = activity.getApplicationContext();
    final Bundle args = getArguments();
    final int totalFrames = args.getInt(FRAGMENT_BUNDLE_KEY_TOTAL_FRAMES);
    final int currentFrame = args.getInt(FRAGMENT_BUNDLE_KEY_CURRENT_FRAME);

    /*//  w w w  .j  a  v  a  2  s.c  o m
     * Select camera from preference.
     */
    // Get from preference.
    PreferencesHelper preferencesHelper = new PreferencesHelper();
    mPhotoBoothMode = preferencesHelper.getPhotoBoothMode(appContext);

    int cameraPreference = CameraInfo.CAMERA_FACING_FRONT;
    if (PreferencesHelper.PhotoBoothMode.PHOTOGRAPHER.equals(mPhotoBoothMode)) {
        cameraPreference = CameraInfo.CAMERA_FACING_BACK;
    }

    // Default to first camera available.
    final int numCameras = Camera.getNumberOfCameras();
    if (numCameras > 0) {
        mCameraId = 0;
    }

    // Select preferred camera.
    CameraInfo cameraInfo = new CameraInfo();
    for (int cameraId = 0; cameraId < numCameras; cameraId++) {
        Camera.getCameraInfo(cameraId, cameraInfo);

        // Break on finding the preferred camera.
        if (cameraInfo.facing == cameraPreference) {
            mCameraId = cameraId;
            break;
        }
    }

    /*
    * Initialize and set key event handlers.
    */
    mKeyEventHandler = new KioskActivity.KeyEventHandler() {
        @Override
        public boolean onKeyEvent(KeyEvent event) {
            final int keyCode = event.getKeyCode();
            if (keyCode == KeyEvent.KEYCODE_ENTER || keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
                mStartButton.dispatchKeyEvent(event);
                return true;
            }
            return false;
        }
    };
    activity.setKeyEventHandler(mKeyEventHandler);

    /*
     * Functionalize views.
     */
    // Configure start button and trigger behaviour.
    switch (mPhotoBoothMode) {
    case PHOTOGRAPHER:
        mStartButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                initiateCapture();
            }
        });
        mStartButton.setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                initiateCapture();
                return true;
            }
        });
        linkStartButton();
        break;
    case AUTOMATIC:
        mStartButtonLong.setVisibility(View.VISIBLE);
        mStartButton.setVisibility(View.GONE);
        mStartButton = mStartButtonLong;
        if (currentFrame > 1) {
            // Auto-trigger when camera is ready and preview has started.
            mPreview.setOnPreviewListener(new CenteredPreview.OnPreviewListener() {
                @Override
                public void onStarted() {
                    if (isActivityAlive()) {
                        mPreview.post(new Runnable() {
                            @Override
                            public void run() {
                                if (isActivityAlive()) {
                                    initiateCountdownCapture();
                                }
                            }
                        });
                    }
                }

                @Override
                public void onStopped() {
                    // Do nothing.
                }
            });
            break;
        } else {
            // Fall through to self-serve behaviour. Do not break.
        }
    case SELF_SERVE:
    default:
        mStartButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                initiateCountdownCapture();
            }
        });
        mStartButton.setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                initiateCountdownCapture();
                return true;
            }
        });
        linkStartButton();
    }

    // Show frame count only if more than one frame is to be captured.
    if (totalFrames > 1) {
        String frameCountText = getString(R.string.capture__frame_count, currentFrame, totalFrames);
        mFrameCount.setTypeface(
                Theme.from(appContext, preferencesHelper.getPhotoBoothTheme(appContext)).getFont());
        mFrameCount.setText(frameCountText);
        mFrameCount.setVisibility(View.VISIBLE);
    }
}

---

From source file:com.grayraven.barcoder.CameraActivityFragement.java

private boolean safeCameraOpen() {
    boolean qOpened = false;

    try {//from   w w w  . ja  va2  s  . c om
        stopPreviewAndFreeCamera();

        //get index of front camera
        Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
        int count = Camera.getNumberOfCameras();
        for (int i = 0; i < count; i++) {
            Camera.getCameraInfo(i, cameraInfo);
            if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
                mCamera = Camera.open(i);
                mCameraId = i;
                break;
            }
        }
        qOpened = (mCamera != null);
    } catch (Exception e) {
        Log.e(getString(R.string.app_name), "failed to open Camera");
        e.printStackTrace();
    }

    return qOpened;
}

---

From source file:com.microsoft.mimickeralarm.utilities.GeneralUtilities.java

@SuppressWarnings("deprecation")
private static boolean hasDeviceCameraWithDirection(int cameraDirection) {
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    for (int i = 0; i < Camera.getNumberOfCameras(); i++) {

        Camera.getCameraInfo(i, cameraInfo);
        if (cameraInfo.facing == cameraDirection) {
            return true;
        }//from   www  .  j  a v a2s.  c o m
    }
    return false;
}

---

From source file:uk.ac.horizon.artcodes.camera.CameraView.java

private void createCamera() {
    if (ContextCompat.checkSelfPermission(getContext(),
            Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
        for (int cameraId = 0; cameraId < Camera.getNumberOfCameras(); cameraId++) {
            try {
                Camera.CameraInfo info = new Camera.CameraInfo();
                Camera.getCameraInfo(cameraId, info);

                if (info.facing == facing) {
                    openCamera(cameraId);
                    return;
                }/*from  w  w  w . ja  va  2  s.  com*/
            } catch (RuntimeException e) {
                Log.e("Scanner", "Failed to open scanner " + cameraId + ": " + e.getLocalizedMessage(), e);
            }
        }

        for (int cameraId = 0; cameraId < Camera.getNumberOfCameras(); cameraId++) {
            try {
                openCamera(cameraId);
                return;
            } catch (RuntimeException e) {
                Log.e("Scanner", "Failed to open scanner " + cameraId + ": " + e.getLocalizedMessage(), e);
            }
        }
    }
}

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From source file:com.arthurtimberly.fragments.CaptureFragment.java

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

    /*/*from   w w w. j a v a 2s.c om*/
     * Get params.
     */
    Bundle args = getArguments();
    mUseFrontFacing = args.getBoolean(FRAGMENT_BUNDLE_KEY_CAMERA);

    /*
     * Default to first camera available.
     */
    mNumCameras = Camera.getNumberOfCameras();
    if (mNumCameras > 0) {
        mCameraId = 0;
    }

    /*
     * Try to select camera based on preference.
     */
    int cameraPreference = CameraInfo.CAMERA_FACING_BACK;
    if (mUseFrontFacing) {
        cameraPreference = CameraInfo.CAMERA_FACING_FRONT;
    }

    CameraInfo cameraInfo = new CameraInfo();
    for (int cameraId = 0; cameraId < mNumCameras; cameraId++) {
        Camera.getCameraInfo(cameraId, cameraInfo);

        // Set flag to indicate whether the camera image is reflected.
        mIsReflected = isCameraImageReflected(cameraInfo);

        // Break on finding the preferred camera.
        if (cameraInfo.facing == cameraPreference) {
            mCameraId = cameraId;
            break;
        }
    }
}

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From source file:ru.jango.j0widget.camera.fragment.AbstractCameraFragment.java

private int getBackwardCameraId() {
    for (int i = 0; i < Camera.getNumberOfCameras(); i++) {
        final Camera.CameraInfo info = new Camera.CameraInfo();
        Camera.getCameraInfo(i, info);//from ww  w.  j  a  va2 s .c o m
        if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK)
            return i;
    }

    return 0;
}

---

From source file:com.kevalpatel.userawarevieoview.FaceAnalyser.java

/**
 * Check if the device has front camera or not?
 *
 * @return true if the device has front camera.
 *///from  w w  w .  j  a  v a  2 s .  com
private boolean isFrontCameraAvailable() {
    int numCameras = Camera.getNumberOfCameras();
    return numCameras > 0
            && mActivity.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FRONT);
}

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