android.hardware.Camera#stopPreview ( )源码实例Demo

下面列出了android.hardware.Camera#stopPreview ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： StarBarcode 文件： CameraManager.java

/**
 * 停止预览
 */
@Override
public void stopPreview() {
    if (isOpenCamera() && previewing) {
        try {
            Camera theCamera = mCamera.getCamera();
            if (focusManager != null) {
                focusManager.stop();
                focusManager = null;
            }
            theCamera.setOneShotPreviewCallback(null);
            theCamera.stopPreview();
            previewing = false;
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

源代码2 项目： PermissionAgent 文件： CameraTester.java

@Override
public boolean test() throws Throwable {
    Camera camera = null;
    try {
        camera = Camera.open();
        Camera.Parameters parameters = camera.getParameters();
        camera.setParameters(parameters);
        camera.setPreviewCallback(PREVIEW_CALLBACK);
        camera.startPreview();
        return true;
    } catch (Throwable e) {
        PackageManager packageManager = mContext.getPackageManager();
        return !packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA);
    } finally {
        if (camera != null) {
            camera.stopPreview();
            camera.setPreviewCallback(null);
            camera.release();
        }
    }
}

源代码3 项目： PermissionAgent 文件： CameraTester.java

@Override
public boolean test() throws Throwable {
    Camera camera = null;
    try {
        camera = Camera.open();
        Camera.Parameters parameters = camera.getParameters();
        camera.setParameters(parameters);
        camera.setPreviewCallback(PREVIEW_CALLBACK);
        camera.startPreview();
        return true;
    } catch (Throwable e) {
        PackageManager packageManager = mContext.getPackageManager();
        return !packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA);
    } finally {
        if (camera != null) {
            camera.stopPreview();
            camera.setPreviewCallback(null);
            camera.release();
        }
    }
}

源代码4 项目： code-scanner 文件： CodeScanner.java

private void stopPreviewInternal(final boolean internal) {
    try {
        final DecoderWrapper decoderWrapper = mDecoderWrapper;
        if (decoderWrapper != null) {
            final Camera camera = decoderWrapper.getCamera();
            camera.cancelAutoFocus();
            final Parameters parameters = camera.getParameters();
            if (!internal && decoderWrapper.isFlashSupported() && mFlashEnabled) {
                Utils.setFlashMode(parameters, Parameters.FLASH_MODE_OFF);
            }
            camera.setParameters(parameters);
            camera.setPreviewCallback(null);
            camera.stopPreview();
        }
    } catch (final Exception ignored) {
    }
    mStoppingPreview = false;
    mPreviewActive = false;
    mSafeAutoFocusing = false;
    mSafeAutoFocusAttemptsCount = 0;
}

源代码5 项目： Android 文件： CameraManager.java

/**
 * Set the camera to camera (turn off the old camera, turn on the new camera)
 *
 * @param mCamera
 */
public Camera setChangeParameters(Activity activity, Camera mCamera, SurfaceHolder viewHolder) {
    if (Camera.getNumberOfCameras() <= 1) {
        return null;
    }
    try {
        mCamera.stopPreview();
        mCamera.setPreviewCallback(null);
        mCamera.release();
        cameraPosition = cameraPosition == 1 ? 0 : 1;
        Camera mNewCamera = getCameraInstance(cameraPosition);
        setParametersCamera(activity, mNewCamera);
        mNewCamera.setPreviewDisplay(viewHolder);
        mNewCamera.startPreview();
        return mNewCamera;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

源代码6 项目： AndPermission 文件： CameraTest.java

@Override
public boolean test() throws Throwable {
    Camera camera = null;
    try {
        int cameraCount = Camera.getNumberOfCameras();
        if (cameraCount <= 0) return true;

        camera = Camera.open(cameraCount - 1);
        Camera.Parameters parameters = camera.getParameters();
        camera.setParameters(parameters);
        camera.setPreviewCallback(PREVIEW_CALLBACK);
        camera.startPreview();
        return true;
    } catch (Throwable e) {
        PackageManager packageManager = mContext.getPackageManager();
        return !packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA);
    } finally {
        if (camera != null) {
            camera.stopPreview();
            camera.setPreviewCallback(null);
            camera.release();
        }
    }
}

源代码7 项目： DevUtils 文件： CameraUtils.java

/**
 * 释放摄像头资源
 * @param camera {@link android.hardware.Camera}
 */
public static void freeCameraResource(final Camera camera) {
    try {
        if (camera != null) {
            camera.setPreviewCallback(null);
            camera.stopPreview();
            camera.lock();
            camera.release();
        }
    } catch (Exception e) {
        LogPrintUtils.eTag(TAG, e, "freeCameraResource");
    }
}

源代码8 项目： react-native-camera-face-detector 文件： RCTCameraModule.java

@ReactMethod
public void stopPreview(ReadableMap options) {
    RCTCamera instance = RCTCamera.getInstance();
    if (instance == null) return;

    Camera camera = instance.acquireCameraInstance(options.getInt("type"));
    if (camera == null) return;

    camera.stopPreview();
}

源代码9 项目： jitsi-android 文件： CameraUtils.java

/**
 * Releases the camera.
 * @param camera the camera to release.
 */
public static void releaseCamera(final Camera camera)
{
    camera.stopPreview();
    surfaceProvider.onObjectReleased();
    camera.release();
}

源代码10 项目： MegviiFacepp-Android-SDK 文件： ICamera.java

public static ArrayList<HashMap<String, Integer>> getCameraPreviewSize(
		int cameraId) {
	ArrayList<HashMap<String, Integer>> size = new ArrayList<HashMap<String, Integer>>();
	Camera camera = null;
	try {
		camera = Camera.open(cameraId);
		if (camera == null)
			camera = Camera.open(0);

		List<Camera.Size> allSupportedSize = camera.getParameters()
				.getSupportedPreviewSizes();
		for (Camera.Size tmpSize : allSupportedSize) {
			if (tmpSize.width > tmpSize.height) {
				HashMap<String, Integer> map = new HashMap<String, Integer>();
                   map.put("width", tmpSize.width);
                   map.put("height", tmpSize.height);
                   if (tmpSize.width==640&&tmpSize.height==480){
                       size.add(map);
                   }
                   if (tmpSize.width==960&&tmpSize.height==540){
                       size.add(map);
                   }
                   if (tmpSize.width==1280&&tmpSize.height==720){
                       size.add(map);
                   }
                   if (tmpSize.width==1920&&tmpSize.height==1080){
                       size.add(map);
                   }

			}
		}

	} catch (Exception e) {
		e.printStackTrace();
	} finally {
		if (camera != null) {
			camera.stopPreview();
			camera.setPreviewCallback(null);
			camera.release();
			camera = null;
		}
	}

	return size;
}