Android Open Source - My-Team--Your-Team Preview

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License

The source code is released under:

MIT License

Java Source Code

package com.selesse.apps;
// w w  w  .ja  va 2  s .co  m
import android.annotation.TargetApi;
import android.content.Context;
import android.hardware.Camera;
import android.os.Build;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

import com.selesse.apps.activity.CameraActivity;

public class Preview extends SurfaceView implements SurfaceHolder.Callback {

  public SurfaceHolder mHolder;
  public Camera camera;

  @SuppressWarnings("deprecation")
  public Preview(Context context) {
    super(context);

    // Install a SurfaceHolder.Callback so we get notified when the
    // underlying surface is created and destroyed.
    mHolder = getHolder();
    mHolder.addCallback(this);
    mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
  }

  // Called once the holder is ready
  @TargetApi(9)
  @Override
  public void surfaceCreated(SurfaceHolder holder) {
    // The Surface has been created, acquire the camera and tell it where
    // to draw.
    try {
      camera = Camera.open();
      // if the camera's null (aka back-facing camera not found), try to
      // get a front facing one
      if (camera == null) {
        if (Build.VERSION.SDK_INT >= 9) {
          Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
          for (int camId = 0; camId < Camera.getNumberOfCameras(); camId++) {
            Camera.getCameraInfo(camId, cameraInfo);
            if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
              try {
                camera = Camera.open(camId);
              }
              catch (RuntimeException e) {
                e.printStackTrace();
              }
            }
          }
        }
      }
      if (camera != null) {
        camera.setDisplayOrientation(90);
        camera.setPreviewDisplay(holder);
      }
      else {
        CameraActivity.showNoCameraError();
      }
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  @Override
  public void surfaceDestroyed(SurfaceHolder holder) {
    if (camera != null) {
      camera.stopPreview();
      camera.release();
    }
    camera = null;
  }

  @Override
  public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
    if (camera != null) {
      try {
        camera.startPreview();
      }
      catch (RuntimeException e) {
        CameraActivity.showNoCameraError();
      }
    }
  }

  public boolean hasCameraEnabled() {
    return camera != null;
  }

}

Java Source Code List

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