get Display Orientation - Android User Interface

Android examples for User Interface:Screen Orientation

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Description

get Display Orientation

Demo Code

/*/*from w w w  .  ja va  2s. c om*/
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import android.hardware.Camera;

public class Main {
  public static int getDisplayOrientation(int degrees, int cameraId) {
    // See android.hardware.Camera.setDisplayOrientation for
    // documentation.
    Camera.CameraInfo info = new Camera.CameraInfo();
    Camera.getCameraInfo(cameraId, info);
    int result;
    if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
      result = (info.orientation + degrees) % 360;
      result = (360 - result) % 360; // compensate the mirror
    } else { // back-facing
      result = (info.orientation - degrees + 360) % 360;
    }
    return result;
  }
}

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