Contoh Camera

import android.Manifest;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.IntentSender;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.location.Location;
import android.location.LocationManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.location.LocationSettingsRequest;
import com.google.android.gms.location.LocationSettingsResult;
import com.google.android.gms.location.LocationSettingsStatusCodes;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;
import com.google.firebase.database.ServerValue;
import com.google.firebase.database.ValueEventListener;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.OnProgressListener;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;

import org.json.JSONArray;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;
import java.util.Locale;

import static com.google.android.gms.internal.zzax.getKey;


public class ReportActivity extends AppCompatActivity implements
        GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener,
        LocationListener, ResultCallback<LocationSettingsResult> {

    TextView tvAccuracy, tvLocation, tvAccuracyStatus;
    Toolbar toolbar;
    FloatingActionButton fab;
    Button btnSend;
    ImageView ivPhoto;
    EditText etReport;

    Uri fileUri;

    JSONArray recipients;

    double latitude, longitude;

    private static final int CAMERA_CAPTURE_IMAGE_REQUEST_CODE = 100;
    public static final int MEDIA_TYPE_IMAGE = 1;
    private static final String IMAGE_DIRECTORY_NAME = "KlikPolisi";

    String fileName, userId, reportContent, category;
    private static String fullName;
    long timestamp;

    private StorageReference mStorage;
    private DatabaseReference mDatabase, mUserRef, mReportRef, mUserToken;
    private FirebaseAuth mAuth;

    ProgressDialog mProgressDialog;

    Location mLastLocation;
    private GoogleApiClient mGoogleApiClient;
    private LocationRequest mLocationRequest;
    public static int LOCATION_REQUEST = 300;
    int REQUEST_CHECK_SETTINGS = 200;
    LocationManager mLocationManager;

    public String lat, lng, accuracy;
    float acc;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_report);
        this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        Bundle extras = getIntent().getExtras();
        category = extras.getString("category");
        setTitle(category);
        System.out.println("Category: " + category);

        mProgressDialog = new ProgressDialog(this);

//        mStorage = FirebaseStorage.getInstance().getReference();
        mDatabase = FirebaseDatabase.getInstance().getReference();
        mAuth = FirebaseAuth.getInstance();

        fab = (FloatingActionButton) findViewById(R.id.fab);
        ivPhoto = (ImageView) findViewById(R.id.ivPhoto);
        etReport = (EditText) findViewById(R.id.etReport);
        tvLocation = (TextView) findViewById(R.id.tvLocation);
        tvAccuracy = (TextView) findViewById(R.id.tvAccuracy);
        tvAccuracyStatus = (TextView) findViewById(R.id.tvAccuracyStatus);

        fullName = getFullName();
//        getUserToken();

        btnSend = (Button) findViewById(R.id.btnSend);
        btnSend.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mProgressDialog.setMessage("Mengirim laporan...");
                mProgressDialog.show();
                saveReport();
            }
        });

        if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
            fab.setEnabled(false);
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, 0);
        } else if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            fab.setEnabled(false);
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
        } else if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            fab.setEnabled(false);
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 2);
        }


        if (category.equals("Kemacetan")) {
            fab.setBackgroundTintList(getResources().getColorStateList(R.color.orange));
        } else if (category.equals("Kecelakaan")) {
            fab.setBackgroundTintList(getResources().getColorStateList(R.color.red));
        } else if (category.equals("Tindak Kriminal")) {
            fab.setBackgroundTintList(getResources().getColorStateList(R.color.green));
        } else if (category.equals("Bencana")) {
            fab.setBackgroundTintList(getResources().getColorStateList(R.color.blue));
        }

        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                takePicture();
            }
        });

        buildGoogleApiClient();
    }

    private void saveReport() {
        reportContent = etReport.getText().toString();
        if (TextUtils.isEmpty(reportContent)) {
            etReport.setError("Harus diisi!");
        }

        mReportRef = mDatabase.child("reports");
        final String reportKey = mReportRef.push().getKey();
        if (reportKey.equals("")){
            return;
        }
        System.out.println("fileName: " + fileName);
        System.out.println("fileUri.getLastPathSegment: " + fileUri.getLastPathSegment());
        StorageReference storageRef = FirebaseStorage.getInstance().getReference().child("Photos/" +
                fileUri.getLastPathSegment());
        storageRef.child("Photos");
        Uri file = Uri.fromFile(new File(fileUri.getPath()));
        UploadTask uploadTask = storageRef.putFile(file);
        uploadTask.addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
                System.out.println("Progress: " + (taskSnapshot.getBytesTransferred()));
                System.out.println("Total: " + taskSnapshot.getTotalByteCount());
                if (taskSnapshot.getBytesTransferred() == taskSnapshot.getTotalByteCount()){
                    System.out.println("Upload complete!");

                    mReportRef.child(reportKey).child("timestamp").setValue(ServerValue.TIMESTAMP);
                    Query query = mReportRef.child(reportKey).child("timestamp");
                    query.addListenerForSingleValueEvent(new ValueEventListener() {
                        @Override
                        public void onDataChange(DataSnapshot dataSnapshot) {
                            timestamp = dataSnapshot.getValue(long.class);
                            System.out.println("fullName2: " + fullName);
                            System.out.println("timestamp: " + timestamp);
                            try {
                                latitude = Double.parseDouble(lat);
                                longitude = Double.parseDouble(lng);
                            } catch (Exception e){
                                System.out.println("Exeption: " + e.toString());
                            }
                            Report report = new Report(userId, fullName, latitude, longitude,
                                    timestamp, reportContent, category, fileUri.getLastPathSegment());
                            mReportRef.child(reportKey).setValue(report);
                            mDatabase.child("new-reports").child(reportKey).setValue(report);
                        }

                        @Override
                        public void onCancelled(DatabaseError databaseError) {
                            System.out.println("Database Error: " + databaseError);
                        }
                    });

                    mProgressDialog.dismiss();
                    getUserToken();
                    finish();
                }
            }
        });

//
    }

    private void takePicture() {
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

        fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
        System.out.println("fileUri: " + fileUri.getPath());

        intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);

        // start the image capture Intent
        startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);
    }

    /**
     * Creating file uri to store image/video
     */
    public Uri getOutputMediaFileUri(int type) {
        return Uri.fromFile(getOutputMediaFile(type));
    }

    /*
     * returning image
     */
    private static File getOutputMediaFile(int type) {

        // External sdcard location
        File mediaStorageDir = new File(
                Environment
                        .getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
                IMAGE_DIRECTORY_NAME);

        // Create the storage directory if it does not exist
        if (!mediaStorageDir.exists()) {
            if (!mediaStorageDir.mkdirs()) {
                Log.d(IMAGE_DIRECTORY_NAME, "Oops! Failed create "
                        + IMAGE_DIRECTORY_NAME + " directory");
                return null;
            }
        }

        // Create a media file name
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
                Locale.getDefault()).format(new Date());
        File mediaFile;
        if (type == MEDIA_TYPE_IMAGE) {
            mediaFile = new File(mediaStorageDir.getPath() + File.separator
                    + "IMG_" + timeStamp + ".jpg");
        } else {
            return null;
        }

        return mediaFile;
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        if (requestCode == 0) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED
                    && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
                fab.setEnabled(true);
            }
        } else if (requestCode == LOCATION_REQUEST) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED
                    && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
                Toast.makeText(getApplicationContext(), "Akses lokasi diizinkan",
                        Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(getApplicationContext(), "Aplikasi harus diizinkan mengakses lokasi!",
                        Toast.LENGTH_LONG).show();
            }
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE && resultCode == RESULT_OK) {
            try {
                System.out.println("fileUri.getPath" + fileUri.getPath());
                String getPath = fileUri.getPath();
                if (getPath.isEmpty()) {
                    getPath = fileUri.getPath();
                    System.out.println("getPath is empty...");
                }
                resizePhoto(getPath);
                previewCapturedImage();
            } catch (Exception e) {
                Toast.makeText(getApplicationContext(), "Gagal memuat foto. Silahkan ulangi lagi!", Toast.LENGTH_LONG).show();
                System.out.println("Gagal mengecilkan foto!");
                e.printStackTrace();
            }
        } else if (requestCode == REQUEST_CHECK_SETTINGS) {
            if (resultCode == RESULT_OK) {

                Toast.makeText(getApplicationContext(), "GPS enabled", Toast.LENGTH_LONG).show();
            } else {

                Toast.makeText(getApplicationContext(), "GPS is not enabled", Toast.LENGTH_LONG).show();
            }
        }

    }

    /*
    * Display image from a path to ImageView
    */
    private void previewCapturedImage() {

        // Get the dimensions of the View
        int targetW = ivPhoto.getWidth();
        int targetH = ivPhoto.getHeight();

        // Get the dimensions of the bitmap
        BitmapFactory.Options bmOptions = new BitmapFactory.Options();
        bmOptions.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(fileUri.getPath(), bmOptions);
        int photoW = bmOptions.outWidth;
        int photoH = bmOptions.outHeight;

        System.out.println("photoW: " + photoW + ", " + "photoH: " + photoH);

        // Determine how much to scale down the image
        int scaleFactor = Math.min(photoW / targetW, photoH / targetH);

        // Decode the image file into a Bitmap sized to fill the View
        bmOptions.inJustDecodeBounds = false;
        bmOptions.inSampleSize = scaleFactor;
        bmOptions.inPurgeable = true;

        Bitmap bitmap = BitmapFactory.decodeFile(fileUri.getPath(), bmOptions);
        ivPhoto.setImageBitmap(bitmap);
    }

    private void resizePhoto(String uri) {
        Bitmap photo = BitmapFactory.decodeFile(uri);
        float scale = photo.getHeight() / 720f;
        int width = (int) (Math.round(photo.getWidth() / scale));

        photo = Bitmap.createScaledBitmap(photo, width, 720, false);
        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
        photo.compress(Bitmap.CompressFormat.JPEG, 80, bytes);

        File mediaStorageDir = new File(
                Environment
                        .getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
                IMAGE_DIRECTORY_NAME);

        File resizedFile;
        resizedFile = new File(mediaStorageDir.getPath() + File.separator
                + fileUri.getLastPathSegment());

        try {
            resizedFile.createNewFile();
            FileOutputStream fo = new FileOutputStream(resizedFile);
            fo.write(bytes.toByteArray());
            fo.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    @Override
    public void onConnected(@Nullable Bundle bundle) {
        mLocationRequest = LocationRequest.create();
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        mLocationRequest.setInterval(5000);
        mLocationRequest.setFastestInterval(1000);

        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION)
                != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this,
                android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {

            ActivityCompat.requestPermissions(this,
                    new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION,
                            android.Manifest.permission.ACCESS_COARSE_LOCATION},
                    LOCATION_REQUEST);
            return;
        }
        LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);

        mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
        if (mLastLocation != null) {
            lat = String.valueOf(mLastLocation.getLatitude());
            lng = String.valueOf(mLastLocation.getLongitude());
            accuracy = String.valueOf(mLastLocation.getAccuracy());
            acc = mLastLocation.getAccuracy();
        }

        mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

        LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
                .addLocationRequest(mLocationRequest);
        builder.setAlwaysShow(true);
        PendingResult<LocationSettingsResult> result =
                LocationServices.SettingsApi.checkLocationSettings(
                        mGoogleApiClient,
                        builder.build()
                );
        result.setResultCallback(this);

        updateUI();
    }

    private void updateUI() {
        tvLocation.setText("Lokasi: " + lat + ", " + lng);
        tvAccuracy.setText("Akurasi: " + accuracy + " m");
        if (acc < 15) {
            tvAccuracyStatus.setText("Lokasi akurat");
            tvAccuracyStatus.setTextColor(Color.parseColor("#0000FF"));
        } else {
            tvAccuracyStatus.setText("Lokasi belum akurat");
            tvAccuracyStatus.setTextColor(Color.parseColor("#FF4081"));
        }
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
        buildGoogleApiClient();
    }

    @Override
    public void onResult(@NonNull LocationSettingsResult locationSettingsResult) {
        final Status status = locationSettingsResult.getStatus();
        switch (status.getStatusCode()) {
            case LocationSettingsStatusCodes.SUCCESS:
                // NO need to show the dialog;
                break;

            case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                //  Location settings are not satisfied. Show the user a dialog
                try {
                    // Show the dialog by calling startResolutionForResult(), and check the result
                    // in onActivityResult().

                    status.startResolutionForResult(this, REQUEST_CHECK_SETTINGS);

                } catch (IntentSender.SendIntentException e) {
                    //failed to show
                }
                break;

            case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                // Location settings are unavailable so not possible to show any dialog now
                break;
        }
    }

    @Override
    public void onLocationChanged(Location location) {

        lat = String.valueOf(location.getLatitude());
        lng = String.valueOf(location.getLongitude());
        accuracy = String.valueOf(location.getAccuracy());
        acc = location.getAccuracy();
        updateUI();
        Log.d("ReportActivity", "Location is updated...");

    }

    synchronized void buildGoogleApiClient() {
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
    }

    @Override
    protected void onStart() {
        super.onStart();
        mGoogleApiClient.connect();
    }

    @Override
    protected void onStop() {
        super.onStop();
        mGoogleApiClient.disconnect();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mGoogleApiClient.disconnect();
    }

    private String getFullName() {
        userId = mAuth.getCurrentUser().getUid();
        mUserRef = mDatabase.child("users").child(userId).child("fullName");
        mUserRef.addListenerForSingleValueEvent(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                fullName = dataSnapshot.getValue(String.class);
                System.out.println("fullName: " + fullName);
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {

            }
        });
        return fullName;
    }

    private void getUserToken(){
        recipients = new JSONArray();
        System.out.println("recipients: " + recipients.length());
        final String body = category + " telah terjadi.";
        mUserToken = mDatabase.child("user-token");
        mUserToken.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                Iterator<DataSnapshot> tokenSnapshot = dataSnapshot.getChildren().iterator();
                do {
                    String key = tokenSnapshot.next().getKey();
                    String userToken = dataSnapshot.child(key).child("userToken").getValue(String.class);
//                    String token = userToken.getUserToken();
                    System.out.println("datasnapshot: " + dataSnapshot);
                    System.out.println("key: " + key);
                    System.out.println("usertoken: " + userToken);
                    recipients.put(userToken);
                } while (tokenSnapshot.hasNext());
                System.out.println("jsonarray: " + recipients);
                FcmSendMessage fcmSendMessage = new FcmSendMessage();
                fcmSendMessage.sendMessage(recipients, "", body, "", "Uji coba dari device");
//                finish();
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {

            }
        });
    }
}