Android Open Source - CallerFlashlight Camera Surface

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License

The source code is released under:

GNU General Public License

If you think the Android project CallerFlashlight listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package com.spirosbond.callerflashlight;
//from  w  w w.ja  v  a 2 s  .c  o  m
import android.content.Context;
import android.hardware.Camera;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

import com.bugsense.trace.BugSenseHandler;

/**
 * Created by spiros on 8/7/13.
 */

/**
 * A basic Camera preview class
 */
public class CameraSurface extends SurfaceView implements SurfaceHolder.Callback {
  private static final String TAG = CameraSurface.class.getSimpleName();
  private static SurfaceHolder mHolder;
  private static Camera mCamera;

  public CameraSurface(Context context, Camera camera) {
    super(context);
    if (CallerFlashlight.LOG) Log.d(TAG, "CameraSurface");
    mCamera = camera;

    // Install a SurfaceHolder.Callback so we get notified when the
    // underlying surface is created and destroyed.
    mHolder = getHolder();
    mHolder.addCallback(this);
    // deprecated setting, but required on Android versions prior to 3.0
    mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
  }

  @Override
  public void surfaceCreated(SurfaceHolder holder) {
    // The Surface has been created, now tell the camera where to draw the preview.
    try {
      if (CallerFlashlight.LOG) Log.d(TAG, "surfaceCreated");
      mCamera.setPreviewDisplay(holder);

      mCamera.startPreview();
    } catch (Exception e) {
      if (CallerFlashlight.LOG) Log.d(TAG, "Error setting camera preview: " + e.getMessage());
      BugSenseHandler.sendException(e);
    }
  }

  @Override
  public void surfaceDestroyed(SurfaceHolder holder) {
    if (CallerFlashlight.LOG) Log.d(TAG, "surfaceDestroyed");
    // empty. Take care of releasing the Camera preview in your activity.
    try {
      mCamera.stopPreview();
    } catch (Exception e) {
      if (CallerFlashlight.LOG) Log.d(TAG, "Error stopping camera preview: " + e.getMessage());
    }

  }

  @Override
  public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
    // If your preview can change or rotate, take care of those events here.
    // Make sure to stop the preview before resizing or reformatting it.
    if (CallerFlashlight.LOG) Log.d(TAG, "surfaceChanged");

    if (mHolder.getSurface() == null) {
      // preview surface does not exist

    }

    //    // stop preview before making changes
    //        try {
    //          mCamera.stopPreview();
    //        } catch (Exception e){
    //          if(CallerFlashlight.LOG)Log.d(TAG, "Error stopping camera preview: " + e.getMessage());
    //        }
    //
    //    // set preview size and make any resize, rotate or
    //    // reformatting changes here
    //
    //    // start preview with new settings
    //    try {
    //      mCamera.setPreviewDisplay(mHolder);
    //      mCamera.startPreview();
    //
    //    } catch (Exception e){
    //      Log.d(TAG, "Error starting camera preview: " + e.getMessage());
    //    }
  }
}

Java Source Code List