MainActivity.java

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package www.socialwa.com.camera;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.hardware.Camera;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.ShutterCallback;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity implements SurfaceHolder.Callback {
    TextView testView;

    Camera camera;
    SurfaceView surfaceView;
    SurfaceHolder surfaceHolder;

    PictureCallback rawCallback;
    ShutterCallback shutterCallback;
    PictureCallback jpegCallback;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        surfaceView = (SurfaceView) findViewById(R.id.surfaceView);
        surfaceHolder = surfaceView.getHolder();

        // Install a SurfaceHolder.Callback so we get notified when the
        // underlying surface is created and destroyed.
        surfaceHolder.addCallback(this);

        // deprecated setting, but required on Android versions prior to 3.0
        surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

        jpegCallback = new PictureCallback() {
            public void onPictureTaken(byte[] data, Camera camera) {
                FileOutputStream outStream = null;

                String a=String.format("/sdcard/%d.jpg", System.currentTimeMillis());
                try {


                    outStream = new FileOutputStream(a);
                    outStream.write(data);
                    outStream.close();

                    Toast.makeText(MainActivity.this, a, Toast.LENGTH_SHORT).show();
                    Log.d("Log", "onPictureTaken - wrote bytes: " + data.length);
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                } finally {
                }
                Toast.makeText(getApplicationContext(), "Picture Saved", Toast.LENGTH_LONG).show();

                File f = new File(a);
                ImageView mImgView1 = (ImageView)findViewById(R.id.imageView);
                Bitmap bmp = BitmapFactory.decodeFile(f.getAbsolutePath());
                mImgView1.setRotation(90);
                mImgView1.setImageBitmap(bmp);
                refreshCamera();
            }
        };
    }

    public void captureImage(View v) throws IOException {
        //take the picture
        camera.takePicture(null, null, jpegCallback);
    }

    public void refreshCamera() {
        if (surfaceHolder.getSurface() == null) {
            // preview surface does not exist
            return;
        }

        // stop preview before making changes
        try {
            camera.stopPreview();
        } catch (Exception e) {
            // ignore: tried to stop a non-existent preview
        }

        // set preview size and make any resize, rotate or
        // reformatting changes here
        // start preview with new settings
        try {
            camera.setPreviewDisplay(surfaceHolder);
            camera.startPreview();
        } catch (Exception e) {

        }
    }

    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
        // Now that the size is known, set up the camera parameters and begin
        // the preview.
        refreshCamera();
    }

    public void surfaceCreated(SurfaceHolder holder) {
        try {
            // open the camera


            camera = Camera.open(1);
            camera.setDisplayOrientation(90);
        } catch (RuntimeException e) {
            // check for exceptions
            System.err.println(e);
            return;
        }
        Camera.Parameters param;
        param = camera.getParameters();

        // modify parameter
        param.setPreviewSize(352, 288);
        camera.setParameters(param);
        try {
            // The Surface has been created, now tell the camera where to draw
            // the preview.
            camera.setPreviewDisplay(surfaceHolder);
            camera.startPreview();
        } catch (Exception e) {
            // check for exceptions
            System.err.println(e);
            return;
        }
    }

    public void surfaceDestroyed(SurfaceHolder holder) {
        // stop preview and release camera
        camera.stopPreview();
        camera.release();
        camera = null;
    }

}