Develop Reference

Overcoming Photo Results from Android Cameras That Produce Low Resolution [duplicate]

This question already has answers here:
Low picture/image quality when capture from camera
(3 answers)
Closed 5 years ago.
I want to take a picture from the Camera and Upload it to Server, but when I take a Picture from the Camera and Upload the Picture is low Resolution.
Code :
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CaptureImageFromCamera = (ImageView)findViewById(R.id.imageView);
CaptureImageFromCamera.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
startActivityForResult(takePictureIntent, 1);
}
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == 1)
try {
onCaptureImageResult(data);
} catch (IOException e) {
e.printStackTrace();
}
}
}
private void onCaptureImageResult(Intent data) throws IOException {
bitmap = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream bytes;
bytes = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, bytes);
File destination = new File(Environment.getExternalStorageDirectory(),
"DCA/Attachment/" + System.currentTimeMillis() + ".png");
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();
}
ImageViewHolder.setImageBitmap(bitmap);
}
Can be seen that the image quality is low resolution.
Is there a way to solve this problem?
[UPDATE] HOW I TO SOLVE THIS
I read the article here to solve this problem
Note: Read from the start page

package com.example.admin.camsdemo;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends AppCompatActivity {
Button captureimage;
ContentValues cv;
Uri imageUri;
ImageView imgView;
public static final int PICTURE_RESULT=111;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
captureimage=(Button)findViewById(R.id.opencamera);
imgView=(ImageView)findViewById(R.id.img);
captureimage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
cv = new ContentValues();
cv.put(MediaStore.Images.Media.TITLE, "My Picture");
cv.put(MediaStore.Images.Media.DESCRIPTION, "From Camera");
imageUri = getContentResolver().insert(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, cv);
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, PICTURE_RESULT);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case PICTURE_RESULT:
if (requestCode == PICTURE_RESULT)
if (resultCode == Activity.RESULT_OK) {
try {
Bitmap thumbnail = MediaStore.Images.Media.getBitmap(
getContentResolver(), imageUri);
imgView.setImageBitmap(thumbnail);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}

Try using TextureView.SurfaceTextureListener and camera.takePicture(shutterCallback, rawCallback, pictureCallback)

For images taken from camera, you should consider JPEG compression. PNG is more suitable for icons where the colors used are few.

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

Separate class for camera in android

This class call the camera class which click the photo but on activity result of this class it gives error on line 41.
package com.example.fish;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Window;
import android.widget.ImageView;
import com.non_activity.*;
public class Camera extends Activity
{
ImageView image;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
//setContentView(R.layout.name_image);
image=(ImageView)findViewById(R.id.cameraImage);
Intent in= new Intent(this,com.camera.CameraCall.class);
startActivityForResult(in, 1);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == 1)
{
ImageRotation ri= new ImageRotation();
image.setImageBitmap(ri.getImageOrientation(com.camera.Camera_nonClass.getPath(), 7)); //line 41
}
}
}
This is the actual camera code application which actually clicks the photo from camera
and return the result back to the calling camra class.
package com.camera;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
public class CameraCall extends Activity
{
final private int CAPTURE_IMAGE = 1;
String imgPath=null;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
cameraCheck();
}
private void cameraCheck()
{
Context context=CameraCall.this;
PackageManager packageManager = context.getPackageManager();
if (packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA))
{
//yes
captureImage();
}else{
//no
finish();
}
}
/******************************************** Camera Function Implementation*******************************************/
/*
* Capturing Camera Image will lauch camera app requrest image capture
*/
private void captureImage()
{
final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, setImageUri());
startActivityForResult(intent, CAPTURE_IMAGE);
}
public Uri setImageUri()
{
File mediaFile=null;
File mediaStorageDir = new File("/sdcard/Fish/");
if (mediaStorageDir.exists()==false)
{
Boolean b=mediaStorageDir.mkdirs();
if(b==false)
return null;
}
if(mediaStorageDir.exists()==true)
{
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",Locale.getDefault()).format(new Date());
mediaFile = new File(mediaStorageDir.getPath() + File.separator+ "IMG_" + timeStamp + ".PNG");
}
Uri imgUri = Uri.fromFile(mediaFile);
this.imgPath = mediaFile.getAbsolutePath();
com.camera.Camera_nonClass.setPath(this.imgPath);
Log.e("image path 1122:-", this.imgPath+"");
return imgUri;
}
public String getImagePath()
{
return imgPath;
}
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (resultCode != Activity.RESULT_CANCELED)
{
if (requestCode == CAPTURE_IMAGE)
{
com.camera.Camera_nonClass.setPath(getImagePath());
Log.e("image path 11:-",com.camera.Camera_nonClass.getPath()+"");
finish();
}
{
super.onActivityResult(requestCode, resultCode, data);
}
}
}
}
This is the file which store the path of image taken from camra.
package com.camera;
public class Camera_nonClass
{
static String path;
public static String getPath() {
return path;
}
public static void setPath(String path) {
Camera_nonClass.path = path;
}
}

Problems when loading cameraimages in imageView

When I take a picture, the picture will saved on the SD.(This works very well)
But the picture won´t shows in the imageView. Do you have any idea?
package de.example.Camera;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Cam extends Activity {
private Uri fileUri;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.b_cam);
Button button2 = (Button) findViewById(R.id.photo);
button2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Start ActivityTwo
/*
* Intent intent = new Intent(getApplicationContext(),
* ActivityTwo.class); intent.putExtra("MyStringValue",
* editText1.getText().toString()); startActivity(intent);
*/
try {
PackageManager packageManager = getPackageManager();
boolean doesHaveCamera = packageManager
.hasSystemFeature(PackageManager.FEATURE_CAMERA);
if (doesHaveCamera) {
// start the image capture Intent
Intent intent = new Intent(
MediaStore.ACTION_IMAGE_CAPTURE);
// Get our fileURI
fileUri = getOutputMediaFile();
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
startActivityForResult(intent, 100);
}
} catch (Exception ex) {
Toast.makeText(getApplicationContext(),
"There was an error with the camera.",
Toast.LENGTH_LONG).show();
}
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode,
Intent intent) {
if (requestCode == 100) {
if (resultCode == RESULT_OK) {
if (intent == null) {
// The picture was taken but not returned
Toast.makeText(
getApplicationContext(),
"The picture was taken and is located here: "
+ fileUri.toString(), Toast.LENGTH_LONG)
.show();
}else {
// The picture was returned
Bundle extras = intent.getExtras();
ImageView imageView1 = (ImageView) findViewById(R.id.imageView1);
imageView1.setImageBitmap((Bitmap) extras.get("data"));
}
}
}
}
private Uri getOutputMediaFile() throws IOException {
File mediaStorageDir = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
"DayTwentyNine");
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss")
.format(new Date());
File mediaFile;
mediaFile = new File(mediaStorageDir.getPath() + File.separator
+ "IMG_" + timeStamp + ".jpg");
if (mediaFile.exists() == false) {
mediaFile.getParentFile().mkdirs();
mediaFile.createNewFile();
}
return Uri.fromFile(mediaFile);
}
}
In the manifest I have are the following:
uses-feature android:name="android.hardware.camera" android:required="false"
uses-permission android:name="android.permission.CAMERA"
uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"

Here I have this peace of code that works fine the first function open the camera and take the picture and the second one place the image you took into an image view...
public void takePictu(View view) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, CAMERA_REQUEST);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data){
if(requestCode == CAMERA_REQUEST && resultCode == RESULT_OK){
photo3 = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo3);
imageView.buildDrawingCache();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
photo3.compress(Bitmap.CompressFormat.JPEG, 100, baos); //bm is the bitmap object
byte[] b = baos.toByteArray();
encodedImage = android.util.Base64.encodeToString(b, android.util.Base64.DEFAULT);
}
}

how to get intent content (thumbnail from mediastore.ACTION_IMAGE_CAPTURE)

I have worked around for a week , and I cannot see why I can't get my thumbnail. I only need it , and not the actual image, and I read that it is convenient to get it through Mediastore.captureimage with no urifile passed to the intent .
My code :
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ImageView;
public class MainActivity extends Activity {
private ImageView image;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
image = (ImageView) findViewById(R.id.image);
}
public void vignette(View vue) {
Intent intention = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intention, 1);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1) {
Uri imageUri = null;
if (data != null) {
if (data.hasExtra("data")) {
Bitmap vignette = (Bitmap) data.getExtras().get("data");
image.setImageBitmap(vignette);
}
}
}
}
}
Actually, data is not null,
but hasExtra("data") gives null.
Though I can see
Intent { act=inline-data dat=content://media/external/images/media/8767 (has extras) }
... is there a way to get that extra !

Inorder to get bitmap from bitmap
Uri imageUri = data.getData();
Bitmap vignette = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);
call this in your onActivityResult function this will give the bitmap
You can always resize the bitmap to your requirement
vignette =Bitmap.createScaledBitmap(vignette ,100,100, true);
image.setImageBitmap(vignette);
this will create a bitmap of 100*100