Android Open Source - FlashLight Camera Utils

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.paladin.flashlightcallstrobe;
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import android.content.Context;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.util.Log;

public class CameraUtils {

  public static final String TAG = "CameraUtils";
  public static Camera camera;
  public static boolean isFlashOn;
  public static boolean hasFlash;
  public static Parameters params;

  /**
   * Check if this device is supporting flashlight or not
   * 
   * @param context
   *            to access the Android resources
   * @return true if the device has flash support.
   */
  public static boolean deviceHasFlash(Context context) {

    hasFlash = context.getPackageManager().hasSystemFeature(
        PackageManager.FEATURE_CAMERA_FLASH);
    if (!hasFlash) {
      Log.d(TAG, "Device does not has flash");
      return false;
    }
    Log.d(TAG, "Device has flash");

    return true;
  }

  /**
   * init the camera and parameters
   * 
   * @return true if the initialize was ok.
   */
  public static boolean getCamera() {
    try {
      camera = null;
      camera = Camera.open();
      params = camera.getParameters();
      return true;
    } catch (Exception exception) {
      Log.e("Camera Error. Failed to Open. Error: ",
          exception.getLocalizedMessage());
      return false;
    }
  }

  /**
   * Turn On flash ?
   */
  public static void turnOnFlash() {
    if (!isFlashOn) {
      if (camera == null || params == null) {
        return;
      }
      params.setFlashMode(Parameters.FLASH_MODE_TORCH);
      camera.setParameters(params);
      isFlashOn = true;
    }
  }

  /**
   * Turn off flash
   */
  public static void turnOffFlash() {
    if (isFlashOn) {
      if (camera == null || params == null) {
        return;
      }
      params.setFlashMode(Parameters.FLASH_MODE_OFF);
      camera.setParameters(params);
      isFlashOn = false;
    }
  }

  /**
   * Release the camera
   */
  public static void releaseCamera() {
    // release the camera
    if (camera != null) {
      camera.release();
      camera = null;
    }
  }

}

Java Source Code List

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