Develop Reference

Android change the pixel or the image size when saving to SQLITE

I know this is quite common to ask but I'm really confused this time. All I need is to save the BLOB image to the SQLite and I have already done and saved it to SQLite, actually, I have two images saved as BLOB in SQLite I compared them but I really don't know the difference the other one contains 3000X4000 pixels 2.72 MIB which much heavier size and the other one is much lighter which is 182x250 50.81Kib and this is what I really want the lightier size. I upload two images to see what's really happening
Actually, I've been trying to develop Text Image Recognition. The image which bigger size sample, after capturing an image it should be crop and saves to SQLite while the lesser size just directly captured image and save to SQLite now they have the save function to save to SQLite I really don't know why they have different size and I think the problem is on the crop or Pickcamera()method which it changes the size of the image? is that possible?.
The bigger one
The lesser one
The bigger size code Image after clicking button it goes to pickCamera() method and the image display to the another activity
public void pickCamera() {
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, "NewPic");
values.put(MediaStore.Images.Media.DESCRIPTION, "Image to Text");
image_uri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,values);
Intent cameraIntent = new Intent (MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, image_uri);
startActivityForResult(cameraIntent, IMAGE_PICK_CAMERA_CODE);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK){
if (requestCode == IMAGE_PICK_GALLER_CODE){
CropImage.activity(data.getData()).setGuidelines(CropImageView.Guidelines.ON).start(this);
}
if (requestCode == IMAGE_PICK_CAMERA_CODE){
CropImage.activity(image_uri).setGuidelines(CropImageView.Guidelines.ON).start(this);
}
}
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE){
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if(resultCode ==RESULT_OK){
Uri resultUri = result.getUri();
resultUri.getPath();
BitmapDrawable bitmapDrawable = (BitmapDrawable)mPreviewIv.getDrawable();
Bitmap bitmap = bitmapDrawable.getBitmap();
TextRecognizer recognizer = new TextRecognizer.Builder(getApplicationContext()).build();
if(!recognizer.isOperational()){
Toast.makeText(this,"Error",Toast.LENGTH_SHORT).show();
}
else{
Frame frame = new Frame.Builder().setBitmap(bitmap).build();
SparseArray<TextBlock> items = recognizer.detect(frame);
StringBuilder sb = new StringBuilder();
for (int i = 0; i<items.size(); i++){
TextBlock myItem = items.valueAt(i);
sb.append(myItem.getValue());
sb.append("\n");
}
Intent i = new Intent(ScanCashCard.this, ScannedDetails.class);
//camera I want to display the image view to another Activity and save to SQLite
i.putExtra("CashCardImage",image_uri.toString());
startActivity(i);
}
}
}
}
Display to another activity
String resultUri = extras.getString("CashCardImage");
Uri myUri = Uri.parse(resultUri);
Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(),myUri);
mPreviewCashCard.setImageBitmap(bitmap);
This code is from the lesser size
public void pickcamera(){
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 101);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 101){
Bitmap bitmap = (Bitmap) data.getExtras().get("data");
mPreview4PsId.setImageBitmap(bitmap);
}
}
I think the problem is on the pickCamera() method which they different but when I follow the code from the lesser size the crop will not be available anymore, I stuck with this module anyone can help me? this is really help me a lot

So I just add a bunch of code which set and replace the default resolution of the Image pixel because I guess the default Pixel of the Image resolution from camera is 3000x4000 pixel so you just need to set the width and height of the ImageView. So I just set 187x250
Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(),myUri);
mPreviewCashCard.setImageBitmap(Bitmap.createScaledBitmap(bitmap, 187, 250, false));

Android capture and use image not working

I've written code in Android to capture an image and then use that image as follows:
private static Intent i;
final static int cons = 0;
private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;
public void takePicture()
{
i= new Intent(MediaStore.ACTION_IMAGE_CAPTURE); //Open camera
startActivityForResult(i, cons);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
Log.d("Testing if condition", "Test"); //This code does not execute
Bundle ext = data.getExtras();
Log.d("Upload image", ext.toString());
sendForUpload(data); // function to upload file to server
} else if (resultCode == RESULT_CANCELED) {
// User cancelled the image capture
} else {
// Image capture failed, advise user
}
}
}
This code lets me take a photo and it saves to the SD card. However, I'm not sure if the file is sent to the sendForUpload function where I've handled getting the path and uploading the file. In fact nothing inside the if (resultCode == RESULT_OK) block works. How do I use the image captured from this activity?

Well, you have a few problems.
First, you are calling startActivityForResult(i, cons);. cons is 0. You are trying to compare 0 with CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE. Since CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE is 100, that will not work.
Second, you are calling data.getExtras().toString() (split over two Java statements). I would expect this to return a value like android.os.Bundle#34334143. If that is what you want to upload, fine. I am guessing that you want to upload the image. Since you did not include EXTRA_OUTPUT in your ACTION_IMAGE_CAPTURE Intent, you get a Bitmap of the thumbnail image taken by the camera via data.getParcelableExtra("data").
Third, you are making inappropriate assumptions:
This code lets me take a photo and it saves to the SD card.
There is no requirement for the camera app to save the image anywhere, let alone to removable storage. In fact, I would argue that this is a bug in your camera app. That is not surprising, as ACTION_IMAGE_CAPTURE implementations have bugs.
where I've handled getting the path and uploading the file
There is no path. You did not include EXTRA_OUTPUT in your ACTION_IMAGE_CAPTURE Intent, and so all you get back is the thumbnail Bitmap.

I'm using this to put the image in a ImageView:
Uri uri = data.getData();
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
You can use bitmap or uri objects for upload or show your picture..
Hope it helps you.

How to put a date watermarker in android camera activity

I'm getting pictures with the next code:
public void foto(View v) {
nom_foto = Environment.getExternalStorageDirectory()+ aptr.ruta_temp + cuadrilla + "/" + medidor + "_"+ cont_foto + ".jpg";
File arch = new File(Environment.getExternalStorageDirectory()+ aptr.ruta_temp+ cuadrilla);
if (!arch.exists())
arch.mkdirs();
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
int code = TAKE_PICTURE;
Uri output = Uri.fromFile(new File(nom_foto));
intent.putExtra(MediaStore.EXTRA_OUTPUT, output);
startActivityForResult(intent, code);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == TAKE_PICTURE) {
ImageView iv = (ImageView) findViewById(R.id.minifoto);
if (resultCode == RESULT_OK) {
new MediaScannerConnectionClient() {
private MediaScannerConnection msc = null;
{
msc = new MediaScannerConnection(getApplicationContext(), this);
msc.connect();
}
public void onMediaScannerConnected() {msc.scanFile(nom_foto,null);
}
public void onScanCompleted(String path, Uri uri)
{ msc.disconnect();}};
Toast.makeText(usuario_lectura.this,"Foto N° " + cont_foto + " agregada correctamente", Toast.LENGTH_LONG).show();
cont_foto++;
iv.setVisibility(View.VISIBLE);
iv.setImageBitmap(BitmapFactory.decodeFile(nom_foto));
}
}
if (resultCode == RESULT_CANCELED) {
File file = new File(nom_foto);
if (file.exists())
file.delete();
}
}
}
Everything works properly, the picture has taken correctly and saved on the SD card... But, I have to add a watermarker, including the date... How can I add it?, the camera activity doesn't give me these option...

In order to add a textual or graphical watermark to your image from the camera, you must open the image, edit it in a Canvas with Paint/Graphics overlays, then re-encode it as a .jpg image, and re-save it as a file on the SD card. You can save over the original file from the camera. All of these steps are fairly straightforward.
There is, however, a serious hurdle.
Most devices will not be able to open the full-size image from the camera in a single Bitmap. There is not enough heap memory available. Therefore, you will have to use a scale factor inSampleSize to open your image. Thus, the watermarked image will be forever smaller by some factor than the original from the camera.
I do not think there is any way around this issue :(

Getting full sized picture from camera or gallery

I'm trying to get a picture from user during a registration proccess. So I have a form, and a button that starts camera, galerry, dropbox etc and asks user to choose or take a pic.
At the button onClick method I'm using the example at the 2nd answer of this topic Allow user to select camera or gallery for image and it opens a dialog with my image apps as options. After taking or choosing a foto, my code at onActivityResult is the following:
Bundle extras = data.getExtras();
Bitmap mImageBitmap = (Bitmap) extras.get("data");
foto.setImageBitmap(mImageBitmap)
So I have 2 problems. First, this get only a thumbnail image, and not the full-sized picture I need. Second, this only works if user chooses to take a new pic with camera...
for getting the fullsize pic, this code seems good Android Camera Intent: how to get full sized photo? but its only for camera-taken pics, and also with this chooser intent I'm not sure where this code would fit. Should I verify witch source use has choosed? If so, how could I do that?
EDIT: The chooser intent offers me 4 options of image sources: Camera, Gallery, Dropbox and ASTRO File Manager. Of course more options would be available if I had other apps installed. So I've checked the intent contents at each case:
CAMERA: act=inline-data (has extras)
DROPBOX and GALLERY: dat="file path"
ASTRO: dat="file path" (has extras)
so verifying if the intent has extras or not doesn't tells me the source. Also both
data.hasExtra("act") and
data.hasExtra("dat")
are returning false.

Here is the code for getting the full size image from camera captured image
declare object
private File dir, destImage,f;
private String cameraFile = null;
private static final int CAPTURE_FROM_CAMERA = 1;
in your activity
dir = new File(Environment.getExternalStorageDirectory()
.getAbsolutePath(), "MyApp");
if (!dir.isDirectory())
dir.mkdir();
destImage = new File(dir, new Date().getTime() + ".jpg");
cameraFile = destImage.getAbsolutePath();
try{
if(!destImage.createNewFile())
Log.e("check", "unable to create empty file");
}catch(IOException ex){
ex.printStackTrace();
}
f = new File(destImage.getAbsolutePath());
Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
i.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(destImage));
startActivityForResult(i,CAPTURE_FROM_CAMERA);
in your onActivityResult
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case CAPTURE_FROM_CAMERA:
if (resultCode==RESULT_OK) {
if(f==null){
if(cameraFile!=null)
f = new File(cameraFile);
else
Log.e("check", "camera file object null line no 279");
}else
Log.e("check", f.getAbsolutePath());
Bitmap useBitmap = BitmapFactory.decodeFile(f.getAbsolutePath());
// now use this bitmap wherever you want
}
break;
}
}

How do I save data from Camera to disk using MediaStore on Android?

For my application, I'd been using my own Camera class for taking images and my own database but soon enough I couldn't really keep up with changes and I decided to use the built in camera application in Android to do the job, but I can't seem to get it to save file. What am I missing here? The application seems to save the file but it's just 0 bytes. I looked up the source code of the Camera application and it's looking for the "output" in Extras to save the file. Any help would be greatly appreciated.
Public class CameraTest extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button cameraButton = (Button) findViewById(R.id.cameraButton);
cameraButton.setOnClickListener( new OnClickListener(){
public void onClick(View v ){
ContentValues values = new ContentValues();
values.put(Images.Media.TITLE, "title");
values.put(Images.Media.BUCKET_ID, "test");
values.put(Images.Media.DESCRIPTION, "test Image taken");
Uri uri = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, values);
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
intent.putExtra("output", uri.getPath());
startActivityForResult(intent,0);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode== 0 && resultCode == Activity.RESULT_OK){
((ImageView)findViewById(R.id.pictureView)).setImageURI(data.getData());
}
}
}

This worked with the following code, granted I was being a little dumb with the last one. I still think there's got to be a better way so that the original image is still saved somewhere. It still sends me the smaller 25% size image.
public class CameraTest extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button cameraButton = (Button) findViewById(R.id.cameraButton);
cameraButton.setOnClickListener( new OnClickListener(){
public void onClick(View v ){
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
startActivityForResult(intent,0);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode== 0 && resultCode == Activity.RESULT_OK) {
Bitmap x = (Bitmap) data.getExtras().get("data");
((ImageView)findViewById(R.id.pictureView)).setImageBitmap(x);
ContentValues values = new ContentValues();
values.put(Images.Media.TITLE, "title");
values.put(Images.Media.BUCKET_ID, "test");
values.put(Images.Media.DESCRIPTION, "test Image taken");
values.put(Images.Media.MIME_TYPE, "image/jpeg");
Uri uri = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, values);
OutputStream outstream;
try {
outstream = getContentResolver().openOutputStream(uri);
x.compress(Bitmap.CompressFormat.JPEG, 70, outstream);
outstream.close();
} catch (FileNotFoundException e) {
//
} catch (IOException e) {
//
}
}
}
Also, I do know that the cupcake release of Android should fix the small image size soon.

The below code will start the default camera and have the camera save the image to the specified uri. The key is to put the extra "MediaStore.EXTRA_OUTPUT" along with the desired uri.
File file = new File(Environment.getExternalStorageDirectory().getPath() + "/Images/" + image_name + ".jpg");
Uri imageUri = Uri.fromFile(file);
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, 0);

In your first attempt, it could be that the Camera app crashes when it reads your "output" extra, since it expects it to be a Uri, while you provide a String. The Camera app seems to read the extra flag after capturing the photo. You should just provide uri, and not uri.getPath(). Then, since you already know the URI to the photo, it will not be returned in the onResult call. You need to remember the URI in a member variable.
In the second attempt you will get a scaled down (50%) bitmap back. It is primarily intended for views. I think the full sized bitmap is too large for the memory budget of the application. This may be the reason for the downscale.

FYI , found this on docs :
The caller may pass an extra EXTRA_OUTPUT to control where this image will be written. If the EXTRA_OUTPUT is not present, then a small sized image is returned as a Bitmap object in the extra field. This is useful for applications that only need a small image. If the EXTRA_OUTPUT is present, then the full-sized image will be written to the Uri value of EXTRA_OUTPUT.
located here :http://developer.android.com/reference/android/provider/MediaStore.html
so the app can save full size image for you , if you tell it where.
**Edit : This is not the case with HTC devices. HTC (not nexus) that uses htc sense ui have branched from android 1.5 and carry a bug that always save the image in low res. you can lunch activity for camera and use the share function from camera to use the full sized image.

I got the same Problem with the Emulator,
I tried it on a real Phone an it worked,
maybe it is because the Virtual Phone can't really take Picures.