Take a snapshot : Camera « Hardware « Android

1. Android
2. Hardware
3. Camera

Take a snapshot

   

package app.test;

import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.List;

import android.app.Activity;
import android.content.ContentValues;
import android.content.res.Configuration;
import android.hardware.Camera;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore.Images.Media;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Toast;

public class Test extends Activity implements OnClickListener,
    SurfaceHolder.Callback, Camera.PictureCallback {
  SurfaceView cameraView;
  SurfaceHolder surfaceHolder;
  Camera camera;
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    cameraView = (SurfaceView) this.findViewById(R.id.CameraView);
    surfaceHolder = cameraView.getHolder();
    surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    surfaceHolder.addCallback(this);
    cameraView.setFocusable(true);
    cameraView.setFocusableInTouchMode(true);
    cameraView.setClickable(true);
    cameraView.setOnClickListener(this);
  }
  public void onClick(View v) {
    camera.takePicture(null, null, this);
  }
  public void onPictureTaken(byte[] data, Camera camera) {
    Uri imageFileUri = getContentResolver().insert(
        Media.EXTERNAL_CONTENT_URI, new ContentValues());
    try {
      OutputStream imageFileOS = getContentResolver().openOutputStream(
          imageFileUri);
      imageFileOS.write(data);
      imageFileOS.flush();
      imageFileOS.close();
    } catch (Exception e) {
      Toast t = Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT);
      t.show();
    }
    camera.startPreview();
  }

  public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
    camera.startPreview();
  }

  public void surfaceCreated(SurfaceHolder holder) {
    camera = Camera.open();
    try {
      camera.setPreviewDisplay(holder);
      Camera.Parameters parameters = camera.getParameters();
      if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) {
        parameters.set("orientation", "portrait");
        camera.setDisplayOrientation(90);
      }
      List<String> colorEffects = parameters.getSupportedColorEffects();
      Iterator<String> cei = colorEffects.iterator();
      while (cei.hasNext()) {
        String currentEffect = cei.next();
        if (currentEffect.equals(Camera.Parameters.EFFECT_SOLARIZE)) {
          parameters.setColorEffect(Camera.Parameters.EFFECT_SOLARIZE);
          break;
        }
      }
      camera.setParameters(parameters);
    } catch (IOException exception) {
      camera.release();
    }
  }
  public void surfaceDestroyed(SurfaceHolder holder) {
    camera.stopPreview();
    camera.release();
  }
}

//layout/main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<SurfaceView android:id="@+id/CameraView" 
             android:layout_width="fill_parent" 
             android:layout_height="fill_parent">
</SurfaceView>
</LinearLayout>

   
    
    
  

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