CameraActivity.java

package co.fppc.ig;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.hardware.Camera;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.ShutterCallback;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ImageButton;

import com.google.android.gms.maps.model.LatLng;

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

import co.fppc.ig.database.model.TmpPhoto;
import co.fppc.ig.database.model.User;
import co.fppc.ig.library.GPSTracker;
import co.fppc.ig.library.Helper;
import co.fppc.ig.library.camera.Preview;

// Mendeklarasikan Activity untuk pengambilan gambar kondisi bencana (kamera)
public class CameraActivity extends Activity {
    private static final String TAG = "CameraActivity";
    Preview preview;
    Button buttonClick;
    Camera camera;
    private User user;
    Activity act;
    Context ctx;
    String dateTakenTmpPhoto;
    String tmpPhotoName;
    private Intent intent;
    private GPSTracker gps;
    private LatLng taggedCoordinate;
    private ImageButton imageButtonCapture;

    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        ctx = this;
        act = this;
        // Pada activity  / halaman ini tidak ditampilkan title, karena digunakan untuk menampilkan kamera
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.activity_camera);

        // Mendeklarasikan intent untuk mengambil data yang dipassing melalui intent sebelumnya.
        intent = getIntent();
        if (intent != null) {
            if (intent.getSerializableExtra("USER_SESSION") != null) {
                user = (User) intent.getSerializableExtra("USER_SESSION");
                Log.e("_USER_ID_", String.valueOf(user.getId()));
                Log.e("_USER_EMAIL_", user.getEmail());
                Log.e("_USER_PASSWORD_", user.getPassword());
            }
        }

        // Menginstansiasi button untuk capture foto
        imageButtonCapture = (ImageButton) findViewById(R.id.image_button_capture);
        // Mendeklarasikan event dari tombol capture tersebut untuk mulai mengambil gambar/foto
        imageButtonCapture.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                camera.takePicture(shutterCallback, rawCallback, jpegCallback);
            }
        });

        // Mendeklarasikan class GPSTracker untuk mengambil posisi user sekarang
        gps = new GPSTracker(CameraActivity.this);
        // Check apakah fitur GPS pada smartphone diaktifkan?
        if(gps.canGetLocation()){

            double latitude = gps.getLatitude();
            double longitude = gps.getLongitude();

            // \n is for new line
            //Helper.toast(getApplicationContext(), "Your Location is - \nLat: " + latitude + "\nLong: " + longitude);

            taggedCoordinate = new LatLng(latitude, longitude);
            Log.d("_onLocationChanged_", "Lat: " + String.valueOf(String.format("%.8f", latitude)) + " Long: " + String.valueOf(String.format("%.8f", longitude)));
        } else{
            // can't get location
            // GPS or Network is not enabled
            // Ask user to enable GPS/network in settings
            gps.showSettingsAlert();
        }

        // Mendeklarasikan view untuk camera
        preview = new Preview(this, (SurfaceView)findViewById(R.id.surfaceView));
        preview.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
        ((FrameLayout) findViewById(R.id.layout)).addView(preview);
        preview.setKeepScreenOn(true);
/*
        preview.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                camera.takePicture(shutterCallback, rawCallback, jpegCallback);
            }
        });
*/

        Helper.toast(ctx, getString(R.string.take_photo_help));
    }

    // Ketika state onResume, mengambil kembali data user 'USER_SESSION'
    // Check apakah hardware camera mendukung
    @Override
    protected void onResume() {
        super.onResume();
        intent = getIntent();
        if (intent != null) {
            if (intent.getSerializableExtra("USER_SESSION") != null) {
                user = (User) intent.getSerializableExtra("USER_SESSION");
                Log.e("_USER_ID_", String.valueOf(user.getId()));
                Log.e("_USER_EMAIL_", user.getEmail());
                Log.e("_USER_PASSWORD_", user.getPassword());
            }
        }
        int numCams = Camera.getNumberOfCameras();
        if(numCams > 0){
            try{
                camera = Camera.open(0);
                camera.startPreview();
                preview.setCamera(camera);
            } catch (RuntimeException ex){
                Helper.toast(ctx, getString(R.string.camera_not_found));
            }
        }
    }

    @Override
    protected void onPause() {
        if(camera != null) {
            camera.stopPreview();
            preview.setCamera(null);
            camera.release();
            camera = null;
        }
        super.onPause();
    }

    private void resetCam() {
        camera.startPreview();
        preview.setCamera(camera);
    }

    // Me-refresh gallery smartphonr
    private void refreshGallery(File file) {
        Intent mediaScanIntent = new Intent( Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        mediaScanIntent.setData(Uri.fromFile(file));
        sendBroadcast(mediaScanIntent);
    }

    ShutterCallback shutterCallback = new ShutterCallback() {
        public void onShutter() {
            //           Log.d(TAG, "onShutter'd");
        }
    };

    PictureCallback rawCallback = new PictureCallback() {
        public void onPictureTaken(byte[] data, Camera camera) {
            //           Log.d(TAG, "onPictureTaken - raw");
        }
    };

    PictureCallback jpegCallback = new PictureCallback() {
        public void onPictureTaken(byte[] data, Camera camera) {
            new SaveImageTask().execute(data);
            resetCam();
            Log.d(TAG, "onPictureTaken - jpeg");

        }
    };

    // Inner class untuk menyimpan gambar / foto hasil lapang di ke server.
    private class SaveImageTask extends AsyncTask<byte[], Void, Void> {

        @Override
        protected Void doInBackground(byte[]... data) {
            FileOutputStream outStream = null;

            // Write to SD Card
            try {
                Log.d("DEBUG", Helper.getCurrentDateWIthFormat("yyyy-MM-dd HH:mm:ss:SSS"));

                File sdCard = Environment.getExternalStorageDirectory();
                File dir = new File(sdCard.getAbsolutePath() + "/" + BuildConfig.APPLICATION_ID);
                dir.mkdirs();

                dateTakenTmpPhoto = Helper.getCurrentDateWIthFormat("yyyy-MM-dd HH:mm:ss:SSS");
                tmpPhotoName = Helper.getCurrentDateWIthFormat("yyyy.MM.dd.HH.mm.ss.SSS");

                File outFile = new File(dir, tmpPhotoName + ".jpg");

                outStream = new FileOutputStream(outFile);
                outStream.write(data[0]);
                outStream.flush();
                outStream.close();

                Log.d(TAG, "onPictureTaken - wrote bytes: " + data.length + " to " + outFile.getAbsolutePath());

                //Log.d("_USER_ID_", String.valueOf(user.getId()));

                refreshGallery(outFile);

                TmpPhoto tmpPhoto = new TmpPhoto();
                tmpPhoto.setUserId(user.getId());
                tmpPhoto.setPhotoLatitude(String.valueOf(String.format("%.8f", taggedCoordinate.latitude)));
                tmpPhoto.setPhotoLongitude(String.valueOf(String.format("%.8f", taggedCoordinate.longitude)));
                tmpPhoto.setPhotoCaption(null);
                tmpPhoto.setDateTakenPhoto(dateTakenTmpPhoto);
                tmpPhoto.setPhotoName(tmpPhotoName + ".jpg");

                // Jika berhasil maka kembali ke MainActivity untuk mengisi content dari incident
                Intent intent = new Intent(getApplicationContext(), MainActivity.class);
                intent.putExtra("TMP_PHOTO", tmpPhoto);
                intent.putExtra("USER_SESSION", user);
                startActivity(intent);

            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
            }
            return null;
        }

    }
}