Develop Reference

Intent move from one to other activity and do oncreate in other activity

I have 2 activity, Tambah and Tampil activity.
I use Tambah activity to add new data (form and button submit), and after submit, it will move to Tampil activity. in Tampil activity will show the list view of data (i'm using Volley). all script works, no error. but in Tampil activity only showing old data (like before add), not showing the newest data.
here my Tambah acitivity
package com.example.arif.upload;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import net.gotev.uploadservice.MultipartUploadRequest;
import net.gotev.uploadservice.UploadNotificationConfig;
import java.io.IOException;
import java.util.UUID;
public class Tambah extends AppCompatActivity implements View.OnClickListener{
//Declaring views
private Button buttonChoose;
private Button buttonUpload;
private ImageView imageView;
private EditText editText;
//Image request code
private int PICK_IMAGE_REQUEST = 1;
//storage permission code
private static final int STORAGE_PERMISSION_CODE = 123;
//Bitmap to get image from gallery
private Bitmap bitmap;
//Uri to store the image uri
private Uri filePath;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tambah);
//Requesting storage permission
requestStoragePermission();
//Initializing views
buttonChoose = (Button) findViewById(R.id.buttonChoose);
buttonUpload = (Button) findViewById(R.id.buttonUpload);
imageView = (ImageView) findViewById(R.id.imageView);
editText = (EditText) findViewById(R.id.editTextName);
//Setting clicklistener
buttonChoose.setOnClickListener(this);
buttonUpload.setOnClickListener(this);
}
/*
* This is the method responsible for image upload
* We need the full image path and the name for the image in this method
* */
public void uploadMultipart() {
//getting name for the image
String name = editText.getText().toString().trim();
//getting the actual path of the image
String path = getPath(filePath);
//Uploading code
try {
String uploadId = UUID.randomUUID().toString();
//Creating a multi part request
new MultipartUploadRequest(this, uploadId, Konfigurasi.url_tambah_tentor)
.addFileToUpload(path, "foto") //Adding file
.addParameter("nama", name) //Adding text parameter to the request
.setNotificationConfig(new UploadNotificationConfig())
.setMaxRetries(2)
.startUpload(); //Starting the upload
Intent move = new Intent(getApplicationContext(),Tampil.class);
startActivity(move);
} catch (Exception exc) {
Toast.makeText(this, exc.getMessage(), Toast.LENGTH_SHORT).show();
}
}
//method to show file chooser
private void showFileChooser() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);
}
//handling the image chooser activity result
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
filePath = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
imageView.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
}
//method to get the file path from uri
public String getPath(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
String document_id = cursor.getString(0);
document_id = document_id.substring(document_id.lastIndexOf(":") + 1);
cursor.close();
cursor = getContentResolver().query(
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
null, MediaStore.Images.Media._ID + " = ? ", new String[]{document_id}, null);
cursor.moveToFirst();
String path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
cursor.close();
return path;
}
//Requesting permission
private void requestStoragePermission() {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)
return;
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_EXTERNAL_STORAGE)) {
//If the user has denied the permission previously your code will come to this block
//Here you can explain why you need this permission
//Explain here why you need this permission
}
//And finally ask for the permission
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, STORAGE_PERMISSION_CODE);
}
//This method will be called when the user will tap on allow or deny
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
//Checking the request code of our request
if (requestCode == STORAGE_PERMISSION_CODE) {
//If permission is granted
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//Displaying a toast
Toast.makeText(this, "Permission granted now you can read the storage", Toast.LENGTH_LONG).show();
} else {
//Displaying another toast if permission is not granted
Toast.makeText(this, "Oops you just denied the permission", Toast.LENGTH_LONG).show();
}
}
}
#Override
public void onClick(View v) {
if (v == buttonChoose) {
showFileChooser();
}
if (v == buttonUpload) {
uploadMultipart();
}
}
}
and here Tampil activity
package com.example.arif.upload;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
public class Tampil extends AppCompatActivity {
ListView list_tentor;
ArrayList<String>nama;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tampil);
list_tentor = (ListView)findViewById(R.id.list_tentor);
nama = new ArrayList<String>();
list_tentor.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent pindah = new Intent(Tampil.this,Tambah.class);
pindah.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(pindah);
finish();
}
});
RequestQueue req = Volley.newRequestQueue(getApplicationContext());
StringRequest sr = new StringRequest(Request.Method.GET, Konfigurasi.url_tampil_tentor, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject jo = new JSONObject(response);
JSONArray tentor = jo.getJSONArray("tentor");
for (int i = 0; i < tentor.length(); i++){
JSONObject pertentor = tentor.getJSONObject(i);
nama.add(pertentor.getString("nama"));
}
Tampiladapter ta = new Tampiladapter(getApplicationContext(),nama);
list_tentor.setAdapter(ta);
}catch (JSONException e){
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
req.add(sr);
}
}
how can when Intent from Tambah activity to Tampil activity, the Tampil activity reload all data include newest data)?

It seems that you are not waiting until data is uploaded and redirecting to next screen.
Try this answer
Implementing ProgressDialog in Multipart Upload Request
onCompleted redirect to next screen

e:java.lang.ClassNotFoundException: com.mediatek.cta.CtaHttp in Android Studio

This is the error that I'm getting everytime I press the upload button after selecting an image from the device
I/System.out:e:java.lang.ClassNotFoundException:com.mediatek.cta.CtaHttp
W/System: ClassLoader referenced unknown path:system/framework/mediatek-cta.jar
While trying to upload an image with a text parameter from the app to SQL database.
MainAtivity.java
package com.example.veekalp.imageupload;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import net.gotev.uploadservice.MultipartUploadRequest;
import net.gotev.uploadservice.UploadNotificationConfig;
import java.io.IOException;
import java.util.UUID;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
//Declaring views
private Button buttonChoose;
private Button buttonUpload;
private ImageView imageView;
private EditText editText;
//Image request code
private int PICK_IMAGE_REQUEST = 1;
//storage permission code
private static final int STORAGE_PERMISSION_CODE = 123;
//Bitmap to get image from gallery
private Bitmap bitmap;
//Uri to store the image uri
private Uri filePath;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Requesting storage permission
requestStoragePermission();
//Initializing views
buttonChoose = (Button) findViewById(R.id.buttonChoose);
buttonUpload = (Button) findViewById(R.id.buttonUpload);
imageView = (ImageView) findViewById(R.id.imageView);
editText = (EditText) findViewById(R.id.editTextName);
//Setting clicklistener
buttonChoose.setOnClickListener(this);
buttonUpload.setOnClickListener(this);
}
/*
* This is the method responsible for image upload
* We need the full image path and the name for the image in this method
* */
public void uploadMultipart() {
//getting name for the image
String name = editText.getText().toString().trim();
//getting the actual path of the image
String path = getPath(filePath);
//Uploading code
try {
String uploadId = UUID.randomUUID().toString();
//Creating a multi part request
new MultipartUploadRequest(this, uploadId, Constants.UPLOAD_URL)
.addFileToUpload(path, "image") //Adding file
.addParameter("name", name) //Adding text parameter to the request
.setNotificationConfig(new UploadNotificationConfig())
.setMaxRetries(2)
.startUpload(); //Starting the upload
} catch (Exception exc) {
Toast.makeText(this, exc.getMessage(), Toast.LENGTH_SHORT).show();
}
}
//method to show file chooser
private void showFileChooser() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);
}
//handling the image chooser activity result
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
filePath = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
imageView.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
}
//method to get the file path from uri
public String getPath(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
String document_id = cursor.getString(0);
document_id = document_id.substring(document_id.lastIndexOf(":") + 1);
cursor.close();
cursor = getContentResolver().query(
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
null, MediaStore.Images.Media._ID + " = ? ", new String[]{document_id}, null);
cursor.moveToFirst();
String path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
cursor.close();
return path;
}
//Requesting permission
private void requestStoragePermission() {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)
return;
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_EXTERNAL_STORAGE)) {
//If the user has denied the permission previously your code will come to this block
//Here you can explain why you need this permission
//Explain here why you need this permission
}
//And finally ask for the permission
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, STORAGE_PERMISSION_CODE);
}
//This method will be called when the user will tap on allow or deny
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
//Checking the request code of our request
if (requestCode == STORAGE_PERMISSION_CODE) {
//If permission is granted
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//Displaying a toast
Toast.makeText(this, "Permission granted now you can read the storage", Toast.LENGTH_LONG).show();
} else {
//Displaying another toast if permission is not granted
Toast.makeText(this, "Oops you just denied the permission", Toast.LENGTH_LONG).show();
}
}
}
#Override
public void onClick(View v) {
if (v == buttonChoose) {
showFileChooser();
}
if (v == buttonUpload) {
uploadMultipart();
}
}
}

Camera is giving very big size image on device

In my project, I am capturing image from the camera. I am taking the full-size image from the app (instead of taking thumbnail). Captured image is of very big size which is 7 to 18 mb. When I have taken image from my default camera app, the size was roughly 2.5 mb only. As well as it's taking lot of time(6-10 seconds) to load and save to the folder. This happening only when I am using the android device, on emulator it's working good. This is my code:
package com.stegano.strenggeheim.fragment;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v4.app.Fragment;
import android.support.v4.content.FileProvider;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.stegano.strenggeheim.BuildConfig;
import com.stegano.strenggeheim.R;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.UUID;
public class FragmentEncode extends Fragment {
private static final String MESSAGE_IMAGE_SAVED = "Image Saved!";;
private static final String MESSAGE_FAILED = "Failed!";
private static final String IMAGE_DIRECTORY = "/StrengGeheim";
private static final int GALLERY = 0, CAMERA = 1;
private File capturedImage;
TextView imageTextMessage;
ImageView loadImage;
public FragmentEncode() {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
private void galleryIntent() {
Intent galleryIntent = new Intent(Intent.ACTION_PICK,
MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(galleryIntent, GALLERY);
}
private void cameraIntent() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
Uri fileUri = getOutputMediaFileUri();
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
startActivityForResult(intent, CAMERA);
}
private Uri getOutputMediaFileUri() {
try {
capturedImage = getOutputMediaFile();
return FileProvider.getUriForFile(getActivity(), BuildConfig.APPLICATION_ID + ".provider", capturedImage);
}
catch (IOException ex){
ex.printStackTrace();
Toast.makeText(getContext(), MESSAGE_FAILED, Toast.LENGTH_SHORT).show();
}
return null;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_encode, container, false);
imageTextMessage = view.findViewById(R.id.imageTextMessage);
loadImage = view.findViewById(R.id.loadImage);
loadImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
showPictureDialog();
}
});
return view;
}
private void showPictureDialog(){
AlertDialog.Builder pictureDialog = new AlertDialog.Builder(getContext());
pictureDialog.setTitle("Select Action");
String[] pictureDialogItems = {
"Select photo from gallery",
"Capture photo from camera",
"Cancel"
};
pictureDialog.setItems(pictureDialogItems,
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
galleryIntent();
break;
case 1:
cameraIntent();
break;
case 2:
dialog.dismiss();
break;
}
}
});
pictureDialog.show();
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == getActivity().RESULT_CANCELED) {
return;
}
try {
if (requestCode == GALLERY && data != null) {
Bitmap bitmap = getBitmapFromData(data, getContext());
File mediaFile = getOutputMediaFile();
String path = saveImage(bitmap, mediaFile);
Log.println(Log.INFO, "Message", path);
Toast.makeText(getContext(), MESSAGE_IMAGE_SAVED, Toast.LENGTH_SHORT).show();
loadImage.setImageBitmap(bitmap);
imageTextMessage.setVisibility(View.INVISIBLE);
} else if (requestCode == CAMERA) {
final Bitmap bitmap = BitmapFactory.decodeFile(capturedImage.getAbsolutePath());
loadImage.setImageBitmap(bitmap);
saveImage(bitmap, capturedImage);
Toast.makeText(getContext(), MESSAGE_IMAGE_SAVED, Toast.LENGTH_SHORT).show();
imageTextMessage.setVisibility(View.INVISIBLE);
}
} catch (Exception ex) {
ex.printStackTrace();
Toast.makeText(getContext(), MESSAGE_FAILED, Toast.LENGTH_SHORT).show();
}
}
private Bitmap getBitmapFromData(Intent intent, Context context){
Uri selectedImage = intent.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = context.getContentResolver()
.query(selectedImage,filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
return BitmapFactory.decodeFile(picturePath);
}
private String saveImage(Bitmap bmpImage, File mediaFile) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bmpImage.compress(Bitmap.CompressFormat.PNG, 50, bytes);
try {
FileOutputStream fo = new FileOutputStream(mediaFile);
fo.write(bytes.toByteArray());
MediaScannerConnection.scanFile(getContext(),
new String[]{mediaFile.getPath()},
new String[]{"image/png"}, null);
fo.close();
return mediaFile.getAbsolutePath();
} catch (IOException ex) {
ex.printStackTrace();
}
return "";
}
private File getOutputMediaFile() throws IOException {
File encodeImageDirectory =
new File(Environment.getExternalStorageDirectory() + IMAGE_DIRECTORY);
if (!encodeImageDirectory.exists()) {
encodeImageDirectory.mkdirs();
}
String uniqueId = UUID.randomUUID().toString();
File mediaFile = new File(encodeImageDirectory, uniqueId + ".png");
mediaFile.createNewFile();
return mediaFile;
}
}

Something you could do is download an available API online, or, if need be, dowload the source code of some online compressor. Then you could use it as a model. Never directly use the source code. One that is widely supported across languages is: https://optimus.keycdn.com/support/image-compression-api/

I am taking the image from the camera and getting the File. So, I am saving the image directly in file location which I generated using getOutputMediaFile() method. For that I am overloading saveImage() method like this:
private void saveImage(File mediaImage) {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
Uri contentUri = Uri.fromFile(mediaImage);
mediaScanIntent.setData(contentUri);
getContext().sendBroadcast(mediaScanIntent);
}
This method will put the image in the desired file location and also accessible to the Gallery for other apps. This method is same as galleryAddPic() method on this link Taking Photos Simply
But In the case of picking a photo from the Gallery, I will have to create the File in the desired location and write the bytes of the picked image into that file, so the old saveImage() method will not change.
In onActivityResult method, this is how I used overloaded saveImage() method:
else if (requestCode == CAMERA) {
saveImage(imageFile);
Bitmap bitmap = BitmapFactory.decodeFile(imageFile.getAbsolutePath());
loadImage.setImageBitmap(bitmap);
Toast.makeText(getContext(), MESSAGE_IMAGE_SAVED, Toast.LENGTH_SHORT).show();
imageTextMessage.setVisibility(View.INVISIBLE);
}

calling another class functions from one class on button click in android

I am making an app with various activities and each activity uses the camera function which is defined in another class. I want that in each activity when the camera button is clicked the camera class is called.
This is my main class:-
package com.example.ishan.complainbox;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import java.lang.String;
public class Crime extends MainActivity implements View.OnClickListener
{
camera cam=new camera();
EditText str,city,pn,det;
Button save,pic;
crimeDBHandler dbHandler;
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_crime);
// Get References of Views
str = (EditText) findViewById(R.id.str);
city = (EditText) findViewById(R.id.city);
pn = (EditText) findViewById(R.id.pin);
det = (EditText) findViewById(R.id.detail);
save = (Button) findViewById(R.id.save);
pic=(Button) findViewById(R.id.uploadpic);
dbHandler = new crimeDBHandler(this, null, null, 1);
}
public void onClick(View view) {
String street = str.getText().toString();
String cty = city.getText().toString();
String pin = pn.getText().toString();
String detail = det.getText().toString();
// check if any of the fields are vaccant
if(str.equals("")||city.equals("")||pn.equals("")||det.equals(""))
{
Toast.makeText(getApplicationContext(), "Field Vacant",
Toast.LENGTH_LONG).show();
return;
}
// check if both passwords match
else
{
// Save the Data in Database
dbHandler.insertEntry(street,cty,pin,detail);
Toast.makeText(getApplicationContext(), "Complaint Successfully
Filed ", Toast.LENGTH_LONG).show();
}
}
};
.....and this is the camera class..:-
package com.example.ishan.complainbox;
/**
* Created by ishan on 13/04/2017.
*/
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class camera extends MainActivity{
private int REQUEST_CAMERA = 0, SELECT_FILE = 1;
private Button btnSelect;
private ImageView ivImage;
private String userChosenTask;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_crime);
btnSelect = (Button) findViewById(R.id.uploadpic);
btnSelect.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
selectImage();
}
});
ivImage = (ImageView) findViewById(R.id.imgView);
}
#Override
public void onRequestPermissionsResult(int requestCode, String[]
permissions, int[] grantResults) {
switch (requestCode) {
case Utility.MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE:
if (grantResults.length > 0 && grantResults[0] ==
PackageManager.PERMISSION_GRANTED)
{
if(userChosenTask.equals("Take Photo"))
cameraIntent();
else if(userChosenTask.equals("Choose from Library"))
galleryIntent();
} else {
}
break;
}
}
private void selectImage() {
final CharSequence[] items = { "Take Photo", "Choose from Library",
"Cancel" };
AlertDialog.Builder builder = new AlertDialog.Builder(camera.this);
builder.setTitle("Add Photo!");
builder.setItems(items, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int item) {
boolean result=Utility.checkPermission(camera.this);
if (items[item].equals("Take Photo")) {
userChosenTask ="Take Photo";
if(result)
cameraIntent();
} else if (items[item].equals("Choose from Library")) {
userChosenTask ="Choose from Library";
if(result)
galleryIntent();
} else if (items[item].equals("Cancel")) {
dialog.dismiss();
}
}
});
builder.show();
}
private void galleryIntent()
{
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select
File"),SELECT_FILE);
}
private void cameraIntent()
{
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, REQUEST_CAMERA);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent
data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == SELECT_FILE)
onSelectFromGalleryResult(data);
else if (requestCode == REQUEST_CAMERA)
onCaptureImageResult(data);
}
}
private void onCaptureImageResult(Intent data) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
thumbnail.compress(Bitmap.CompressFormat.JPEG, 90, bytes);
File destination = new
File(Environment.getExternalStorageDirectory(),System.currentTimeMillis() +
".jpg");
FileOutputStream fo;
try {
destination.createNewFile();
fo = new FileOutputStream(destination);
fo.write(bytes.toByteArray());
fo.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
ivImage.setImageBitmap(thumbnail);
}
#SuppressWarnings("deprecation")
private void onSelectFromGalleryResult(Intent data) {
Bitmap bm=null;
if (data != null) {
try {
bm =
MediaStore.Images.Media.getBitmap(getApplicationContext().
getContentResolver(),
data.getData());
} catch (IOException e) {
e.printStackTrace();
}
}
ivImage.setImageBitmap(bm);
}
}

This can be achieved through regular inter-activity communication mechanisms like passing intents or using broadcast receivers. I would suggest using intents - Refer this basic example from Android doc: https://developer.android.com/training/basics/firstapp/starting-activity.html
EDIT
Response to OP's question in comment-
You have to save the image file to FS in your Camera Class and pass the file name as an Extra with the intent to your Crime class. Since you are dealing with storage your Apps's manifest now would need additional permissions. I would recommend you go through this thread: Camera is not saving after taking picture

Capturing Image from Camera and Upload to Firebase

I am working on a simple blog app that allows the user to upload photo from phone gallery and descriptions to the Firebase Server. I am trying to modify my current project to allow the user to capture photo from camera and uploading it to the firebase server.
Currently, I am able to display the image that i have captured into imagebutton, however i am unable to post my image to the firebase server (The "submit post" button does not react to my onclick function).
I am suspecting there is some error in my startPosting() function or i did not encode the image correctly? Please help.
package simpleblog2.emily.example.com.simpleblog2;
import android.app.ProgressDialog;
import android.content.ContentProvider;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.Image;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Toast;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;
import com.squareup.picasso.Picasso;
import com.theartofdev.edmodo.cropper.CropImage;
import java.io.File;
public class PostActivity extends AppCompatActivity {
private ImageButton mSelectImage;
private EditText mPostTitle;
private EditText mPostDesc;
private Button mSubmitBtn;
private ProgressDialog mProgress;
private DatabaseReference mDatabase;
private Uri mImageUri = null;
private static final int GALLERY_REQUEST = 1;
private static final int CAMERA_REQUEST_CODE = 1;
private StorageReference mStorage;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_post);
mStorage = FirebaseStorage.getInstance().getReference();
mDatabase = FirebaseDatabase.getInstance().getReference().child("Blog");
mSelectImage = (ImageButton) findViewById(R.id.imageSelect);
mPostTitle = (EditText) findViewById(R.id.titleField);
mPostDesc = (EditText) findViewById(R.id.descField);
mSubmitBtn = (Button) findViewById(R.id.submitBtn);
mProgress = new ProgressDialog(this);
mSelectImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent1 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent1, CAMERA_REQUEST_CODE);
intent1.setType("image/*");
/*
Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent, GALLERY_REQUEST);
*/
}
});
mSubmitBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startPosting();
}
});
}
private void startPosting() {
mProgress.setMessage("Posting to blog...");
final String title_val = mPostTitle.getText().toString().trim();
final String desc_val = mPostDesc.getText().toString().trim();
if (!TextUtils.isEmpty(title_val) && !TextUtils.isEmpty(desc_val) && mImageUri != null) {
mProgress.show();
StorageReference filepath = mStorage.child("Blog_Images").child(mImageUri.getLastPathSegment());
filepath.putFile(mImageUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Uri downloadUrl = taskSnapshot.getDownloadUrl();
DatabaseReference newPost = mDatabase.push();
newPost.child("title").setValue(title_val);
newPost.child("desc").setValue(desc_val);
newPost.child("image").setValue(downloadUrl.toString());
mProgress.dismiss();
startActivity(new Intent(PostActivity.this, MainActivity.class));
}
});
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// if(requestCode == GALLERY_REQUEST && resultCode == RESULT_OK){
if (requestCode == CAMERA_REQUEST_CODE && resultCode == RESULT_OK) {
/* mImageUri = data.getData();
mSelectImage.setImageURI(mImageUri);
CropImage.activity(mImageUri)
.setGuidelines(CropImageView.Guidelines.ON)
.start(this);
*/
Bitmap mImageUri = (Bitmap) data.getExtras().get("data");
mSelectImage.setImageBitmap(mImageUri);
}
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
Uri resultUri = result.getUri();
mSelectImage.setImageURI(resultUri);
} else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Exception error = result.getError();
}
}
}
}

I have found a solution to my question, i realized that i can get my captured data using the function of data.getData() instead of using the Bitmap function:
mImageUri = data.getData();
mSelectImage.setImageURI(mImageUri);
Also, Previously i did not realized that my 'crop' function could not work because i am missing of:
mImageUri = resultUri;
I realized that there is an issue that if i did not crop my captured image, the fire-base could not handle the high resolution (Or storage size? and it will be loading very slow/image did not appear), This can be resolve by the 'cropping' function.
The final code is stated below:
Thanks all for your help.
package simpleblog2.emily.example.com.simpleblog2;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.media.Image;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Toast;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;
import com.theartofdev.edmodo.cropper.CropImage;
import com.theartofdev.edmodo.cropper.CropImageView;
public class PostActivity extends AppCompatActivity {
private ImageButton mSelectImage;
private EditText mPostTitle;
private EditText mPostDesc;
private Button mSubmitBtn;
private ProgressDialog mProgress;
private DatabaseReference mDatabase;
private Uri mImageUri = null;
private static final int GALLERY_REQUEST =1;
private static final int CAMERA_REQUEST_CODE=1;
private StorageReference mStorage;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_post);
mStorage = FirebaseStorage.getInstance().getReference();
mDatabase = FirebaseDatabase.getInstance().getReference().child("Blog");
mSelectImage = (ImageButton) findViewById(R.id.imageSelect);
mPostTitle = (EditText) findViewById(R.id.titleField);
mPostDesc = (EditText) findViewById(R.id.descField);
mSubmitBtn = (Button) findViewById(R.id.submitBtn);
mProgress = new ProgressDialog(this);
mSelectImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (intent.resolveActivity(getPackageManager()) != null) {
startActivityForResult(intent, CAMERA_REQUEST_CODE);
}
//startActivityForResult(intent,CAMERA_REQUEST_CODE);
/*
Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent, GALLERY_REQUEST);
*/
}
});
mSubmitBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startPosting();
}
});
}
private void startPosting(){
mProgress.setMessage("Posting to blog...");
final String title_val = mPostTitle.getText().toString().trim();
final String desc_val = mPostDesc.getText().toString().trim();
if(!TextUtils.isEmpty(title_val)&&!TextUtils.isEmpty(desc_val) && mImageUri != null){
mProgress.show();
StorageReference filepath = mStorage.child("Blog_Images").child(mImageUri.getLastPathSegment());
filepath.putFile(mImageUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Uri downloadUrl =taskSnapshot.getDownloadUrl();
DatabaseReference newPost = mDatabase.push();
newPost.child("title").setValue(title_val);
newPost.child("desc").setValue(desc_val);
newPost.child("image").setValue(downloadUrl.toString());
mProgress.dismiss();
startActivity(new Intent(PostActivity.this,MainActivity.class));
}
});
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// if(requestCode == GALLERY_REQUEST && resultCode == RESULT_OK){
if(requestCode == CAMERA_REQUEST_CODE && resultCode == RESULT_OK){
mImageUri = data.getData();
mSelectImage.setImageURI(mImageUri);
CropImage.activity(mImageUri)
.setGuidelines(CropImageView.Guidelines.ON)
.setAspectRatio(1,1)
.start(this);
/* Bitmap mImageUri1 = (Bitmap) data.getExtras().get("data");
mSelectImage.setImageBitmap(mImageUri1);
Toast.makeText(this, "Image saved to:\n" +
data.getExtras().get("data"), Toast.LENGTH_LONG).show();
*/
}
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
Uri resultUri = result.getUri();
mSelectImage.setImageURI(resultUri);
mImageUri = resultUri;
} else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Exception error = result.getError();
}
}
}
}

Before it was if auth != null but I changed it to if true so the if will always evaluate true.
private void uploadFile() {
//if there is a file to upload
if (filePath != null) {
//displaying a progress dialog while upload is going on
final ProgressDialog progressDialog = new ProgressDialog(this);
progressDialog.setTitle("Uploading");
progressDialog.show();
StorageReference riversRef = storageReference.child("Blog_Images.jpg");
riversRef.putFile(filePath)
.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
//if the upload is successfull
//and displaying a success toast
Toast.makeText(getApplicationContext(), "File Uploaded ", Toast.LENGTH_LONG).show();
}
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception exception) {
//if the upload is not successfull
//hiding the progress dialog
progressDialog.dismiss();
//and displaying error message
Toast.makeText(getApplicationContext(), exception.getMessage(), Toast.LENGTH_LONG).show();
}
})
.addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
#Override
public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
//calculating progress percentage
double progress = (100.0 * taskSnapshot.getBytesTransferred()) / taskSnapshot.getTotalByteCount();
//displaying percentage in progress dialog
progressDialog.setMessage("Uploaded " + ((int) progress) + "%...");
}
});
}
//if there is not any file
else {
//you can display an error toast
}
}

Your class field mImageUri is never initialized. You put received bitmap in local field, called the same as the class field.
Bitmap mImageUri = (Bitmap) data.getExtras().get("data");
mSelectImage.setImageBitmap(mImageUri);
Therefore, the condition is never true.
if (!TextUtils.isEmpty(title_val) && !TextUtils.isEmpty(desc_val) && mImageUri != null)

if (requestCode == CAMERA_REQUEST_CODE && resultCode == RESULT_OK) {
/* mImageUri = data.getData();
mSelectImage.setImageURI(mImageUri);
CropImage.activity(mImageUri)
.setGuidelines(CropImageView.Guidelines.ON)
.start(this);
*/
Bitmap mImageUri = (Bitmap) data.getExtras().get("data");
mSelectImage.setImageBitmap(mImageUri);
}
There is a chance that your URI is null. I assume, this is the problem.
Unless you do it somewhere else?
The image might be loaded because the requestCode = CAMERA_REQUEST_CODE but NOT CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE.
I am going to post below a code I used to do what you ask, but first few things you need to understand.
From android version 7 using Uri.parseFromFile(file) return a error because google want to restrict your access. From now on if you want to get file uri you should use FileProvider
declare permmisions and FileProvider in your manifest:
//File provider declaration in manifest.
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.hadas.yotam.manchworkers.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/provider_paths"/>
</provider>
//in new xml file define the location you need permmision to, the code below give you permmision for any external file.
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="external_files" path="."/>
</paths>
so now when you upload use the global Uri variable if onActivityResault is successful, here is the code:
if(Build.VERSION.SDK_INT>=24) {
String file = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)+"/" + Calendar.getInstance().getTimeInMillis() + ".jpg";
File file1 = new File(file);
photoURI = FileProvider.getUriForFile(this, getApplicationContext().getPackageName() + ".provider", file1);
intent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
}
Then in your onActivityResult you do check if your photoURI = null, if its true (its null)
use photoURI = data.getData();
//if phone android version greater or equal to Marshmelo
if(Build.VERSION.SDK_INT>Build.VERSION_CODES.M){
//check if have permmission to write to external + permmision to camera
if(ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.WRITE_EXTERNAL_STORAGE)== PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CAMERA)== PackageManager.PERMISSION_GRANTED){
//if its have permission then new intent to capture image
intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//if android version >= 24 (Android Nugget)
if(Build.VERSION.SDK_INT>=24) {
//create new String to pictures directory and set the file name to current_time.jpg
String file = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)+"/" + Calendar.getInstance().getTimeInMillis() + ".jpg";
File file1 = new File(file);
//set GLOBAL variable Uri from the file using FileProvider
photoURI = FileProvider.getUriForFile(this, getApplicationContext().getPackageName() + ".provider", file1);
//add the file location the intent (the picture will be save to this file)
intent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
}
tagIntent = CAPTURE_RESAULT;
//else - dont have permission, request for permission
}else{
requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.CAMERA},CAPTURE_RESAULT);
}
else -
}else{
// same thing only without FileProvider (FileProvider only required since Nugget)
intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
String file = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)+"/" + Calendar.getInstance().getTimeInMillis() + ".jpg";
File file1 = new File(file);
photoURI = Uri.fromFile(file1);
intent.putExtra(MediaStore.EXTRA_OUTPUT,photoURI);
tagIntent = CAPTURE_RESAULT;
}
//if phone can handle the intent, start the intent for resault.
if(intent.resolveActivity(getPackageManager())!=null) {
startActivityForResult(intent,tagIntent);
}