Android Open Source - FloatCamera Camera Preview

• Back to Camera/take  ↑

From Project

Back to project page FloatCamera.

License

The source code is released under:

Apache License

Java Source Code

package com.kenai.camera;
//w ww  .  j av  a 2  s  . c  om
import com.kenai.function.message.XLog;

import android.content.Context;
import android.graphics.ImageFormat;
import android.hardware.Camera;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class CameraPreview extends SurfaceView implements
    SurfaceHolder.Callback {
  private final String TAG = "CameraPreview";
  private final SurfaceHolder myHolder;
  private final Camera myCamera;

  public CameraPreview(Context context, Camera camera) {
    super(context);
    myCamera = camera;
    myHolder = getHolder();
    myHolder.addCallback(this);
    // necessary before android3.0
    myHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
  }

  public void surfaceChanged(SurfaceHolder holder, int format, int width,
      int height) {
    XLog.xLog(TAG, "surfaceChanged");
    /*
     * ???????????????????? ?????????????????
     */
    if (myHolder.getSurface() == null) {
      // ??surface????
      return;
    }
    /*
     * ??????????????????? ??????????? ???????????myHolder?
     */
    try {
      myCamera.setPreviewDisplay(myHolder);// ??holder???????????
      myCamera.startPreview();// ???????????????????????????
    } catch (Exception e) {
      XLog.xLog(TAG, "Error setting camera preview:\n" + e.getMessage());
      e.printStackTrace();
    }
  }

  public void surfaceCreated(SurfaceHolder holder) {
    XLog.xLog(TAG, "surfaceCreated");
    // surface????????????????????????
    try {
      Camera.Parameters parameters = myCamera.getParameters();
      // ??????????
      parameters.setPreviewSize(720, 480);
      parameters.setPreviewFormat(ImageFormat.NV21);
      parameters.setFocusMode(Camera.Parameters.SCENE_MODE_AUTO);
      parameters.setPictureFormat(ImageFormat.JPEG);
      parameters.setJpegQuality(80);
      // ????????
      parameters.setPictureSize(parameters.getPictureSize().width,
          parameters.getPictureSize().height);
      // parameters.setRotation(270);
      // android2.3.3????????
      myCamera.setParameters(parameters);
    } catch (Exception e) {
    }
    try {
      myCamera.setPreviewDisplay(holder);
      myCamera.startPreview();
    } catch (Exception e) {
      XLog.xLog(TAG, "Error setting camera preview:\n" + e.getMessage());
      e.printStackTrace();
    }
  }

  public void surfaceDestroyed(SurfaceHolder holder) {
    XLog.xLog(TAG, "surfaceDestroyed");
  }
}

Java Source Code List

• Back to Camera/take  ↑