Develop Reference

Google ML Kit face detection can not identify faces from uri

I'm using google ml kit for face detection, then use bounding Box function to crop faces.
I successfully integrate cameras ,then want to add select from gallery function, which I successfully implement previous training app that I wrote in Java, yet I can find why App written in Kotlin can not identify image Uri from gallery.
I tried multiple methods InputImage.fromBirmap(), InputImage.fromFilePath() and InputImage.fromByteArray("use nv21"), and used Image View to display images with rotation degrees that seems perfect. You can find codes that initiated by on click method below, except InputImage.fromFilePath() and InputImage.fromByteArray("use nv21") which tried first, then delete the codes.
Also thank you before hand.
private fun selectImage() {
val intent = Intent()
intent.type = "image/*"
intent.action = Intent.ACTION_GET_CONTENT
startActivityForResult(Intent.createChooser(intent, "Select Picture"), 11)
}
#RequiresApi(Build.VERSION_CODES.N)
#Deprecated("Deprecated in Java")
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (resultCode == RESULT_OK) {
if (requestCode == 11) {
if (data != null){
val bitmap = getBitmapFromUri(data.data!!)
Log.d(TAG, "onActivityResult: ${data.data!!}")
val inputStream = contentResolver.openInputStream(data.data!!)
val exif = ExifInterface(inputStream!!)
val rotation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL
)
val rotationInDegrees: Int = exifToDegrees(rotation)
inputStream.close()
Log.d(TAG, "onActivityResult: rotation: $rotation")
if (bitmap != null) selectedImageAnalyser(bitmap, rotationInDegrees)
}
}
}
}
private fun exifToDegrees(exifOrientation: Int): Int {
return when (exifOrientation) {
ExifInterface.ORIENTATION_ROTATE_90 -> {
90
}
ExifInterface.ORIENTATION_ROTATE_180 -> {
180
}
ExifInterface.ORIENTATION_ROTATE_270 -> {
270
}
else -> 0
}
}
private fun getBitmapFromUri(uri: Uri): Bitmap? {
var bitmap: Bitmap? = null
try {
bitmap = if (Build.VERSION.SDK_INT > Build.VERSION_CODES.O_MR1) {
val source = ImageDecoder.createSource(
contentResolver, uri
)
ImageDecoder.decodeBitmap(source)
} else {
MediaStore.Images.Media.getBitmap(contentResolver, uri)
}
} catch (e: IOException) {
e.printStackTrace()
}
return bitmap
}
private fun selectedImageAnalyser(bitmap: Bitmap, rotationDegree: Int) {
val mBitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true)
val inputImage = InputImage.fromBitmap(mBitmap, rotationDegree)
val rotation = inputImage.rotationDegrees
Log.d(TAG, "onActivityResult: rotation: $rotation")
binding!!.ivFace.apply {
visibility = View.VISIBLE
setImageBitmap(inputImage.bitmapInternal)
}
faceDetector.process(inputImage)
.addOnSuccessListener { faces ->
if (faces.isNullOrEmpty()){
val croppedFace = cropToBox(bitmap,faces[0].boundingBox,rotation)
startEnrollDialog(croppedFace)
} else{
Log.d(TAG, "selectedImageAnalyser: face can not identified")
}
}
.addOnFailureListener { Log.d(TAG, "selectedImageAnalyser: \n\t Cause: ${it.cause} \n\t Message: ${it.message}") }
.addOnCompleteListener { }
}

Save image using kotlin

I am new to Android development, and im making simple aplication that capture image then save. I can capture the image and show into imageview, but unfortunately i cannot save into gallery.
i tryed many ways but cannot save. this is original code to take and show.
// EDITED //
I add function to save file, but still not working
class TomarFotos : AppCompatActivity() {
lateinit var photoPath: String
val REQUEST_IMAGE_CAPTURE = 1
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_tomar_fotos)
val foto = findViewById<Button>(R.id.tomarfotos)
foto.setOnClickListener{
tomarFoto()
}
}
fun tomarFoto() {
val intent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
if(intent.resolveActivity(packageManager) != null){
var photoFile: File? = null
try{
photoFile = createImageFile()
}catch (e: IOException){}
if(photoFile != null){
val photoUri = FileProvider.getUriForFile(
this,
"com.example.android.fileprovider",
photoFile
)
intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri)
startActivityForResult(intent,REQUEST_IMAGE_CAPTURE)
}
}
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
val fotoTomada = findViewById<ImageView>(R.id.fotopreview)
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
fotoTomada.rotation = 90f
fotoTomada.setImageURI(Uri.parse(photoPath))
}
}
private fun createImageFile(): File? {
val fileName = "foto"
val storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES)
val image = File.createTempFile(
fileName,
".jpg",
storageDir
)
photoPath = image.absolutePath
return image
}
}
i try developer.android.com already but didnt work

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
val fotoTomada = findViewById<ImageView>(R.id.fotopreview)
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
val imageBitmap = data?.extras?.get("data") as Bitmap
fotoTomada.setImageBitmap(imageBitmap)
saveImage(imageBitmap)
}
}
Call this function to save image to gallery
private fun saveImage(bitmap: Bitmap) {
var outStream: FileOutputStream? = null
// Write to SD Card
try {
val dir = File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + File.separator + "AppName/")
dir.mkdirs()
val fileName = "IMG_${System.currentTimeMillis()}"
val outFile = File(dir, fileName)
outStream = FileOutputStream(outFile)
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outStream)
outStream.flush()
outStream.close()
Toast.makeText(this#MainActivity, "Image Saved Successfully", Toast.LENGTH_LONG).show()
} catch (e: FileNotFoundException) {
Log.d("TAG", "saveImage: ${e.message}")
} catch (e: IOException) {
Log.d("TAG", "saveImage: ${e.message}")
}
}

Unable to capture image in android 11

i'm trying to capture image in android 11 device but request is keep cancelled. i have added also. still unable to capture image. pick image from gallery is working. image is not storing in Android/data folder.
i have added val intent = Intent(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION) also still unable to create temp file in storage. please provide any solutions
private fun selectImage() {
imageUtils.createImageFile(applicationContext).let {
viewModel.setFileTempPath(it.absolutePath, "doc_name")
startActivityForResult(imageUtils.captureImage(applicationContext, it), 300)
}
override fun onActivityResult(
requestCode: Int,
resultCode: Int,
data: Intent?
) {
super.onActivityResult(requestCode, resultCode, data)
when (requestCode) {
300 -> when (resultCode) {
RESULT_OK -> {
Log.d("tmppath", data?.data.toString())
if (data != null && data.data != null) {
val selectedImage: Bitmap =
imageUtils.getBitmap(data.data, this#TaggingActivity)!!
viewModel.dataModel.selectedImagesArrayList.value.let {
if (it == null) {
viewModel.dataModel.selectedImagesArrayList.value = ArrayList()
}
val a = it
a?.add(
ImageDetailsToUpload(
"",
selectedImage,
Constant.CUSTOMER_GEO_TAG,
viewModel.dataModel.documentName.value,
viewModel.commonModel.currentLocation.value!!
)
)
viewModel.dataModel.selectedImagesArrayList.postValue(a)
}
} else {
if (viewModel.dataModel.tmpPath.value != null) {
imageUtils.getBitmapFromPath(viewModel.dataModel.tmpPath.value)
?.let { selectedImage ->
val a = viewModel.dataModel.selectedImagesArrayList.value
a?.add(
ImageDetailsToUpload(
"",
selectedImage,
Constant.CUSTOMER_GEO_TAG,
viewModel.dataModel.documentName.value,
viewModel.commonModel.currentLocation.value!!
)
)
viewModel.dataModel.selectedImagesArrayList.postValue(a)
} ?: run {
viewModel.commonModel.showToastTextView("Sorry Try Again..!")
}
} else {
viewModel.commonModel.showToastTextView("Sorry Try Again..!")
return
}
}
viewModel.dataModel.tmpPath.value = null
}
RESULT_CANCELED -> {
viewModel.setFileTempPath("", "")
Toast.makeText(this,"cancelled",Toast.LENGTH_LONG).show()
}
}
}
//Intent class
fun getCameraIntent(file: File): Intent {
val takePictureIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
takePictureIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file))
if (Build.VERSION.SDK_INT >= 24) {
try {
val m =
StrictMode::class.java.getMethod("disableDeathOnFileUriExposure")
m.invoke(null)
} catch (e: java.lang.Exception) {
e.printStackTrace()
}
} else {
takePictureIntent.putExtra("return-data", true)
takePictureIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
}
val pickPhoto = Intent(
Intent.ACTION_PICK,
MediaStore.Images.Media.EXTERNAL_CONTENT_URI
)
val intents: ArrayList<Intent> = arrayListOf()
intents.add(takePictureIntent)
intents.add(pickPhoto)
val chooserIntent = Intent.createChooser(
intents.removeAt(intents.size - 1),
" Document Upload"
)
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intents.toArray(arrayOf<Parcelable>()))
return chooserIntent
}

Why Camera activity returning null?

I used below codes for taking image from camera and put it in Image View (imgViewAds).
private void BtnPhoto_Click(object sender, EventArgs e)
{
StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.SetVmPolicy(builder.Build());
Intent cameraIntent = new Intent(Android.Provider.MediaStore.ActionImageCapture);
var activities = PackageManager.QueryIntentActivities(cameraIntent, 0);
if (activities.Count > 0)
{
addAds.ImageName = Guid.NewGuid().ToString() + ".jpg";
Java.IO.File imageFile = new Java.IO.File(AdsAdapter.ImagePath(addAds.ImageName));
Android.Net.Uri imageUri = Android.Net.Uri.FromFile(imageFile);
cameraIntent.PutExtra(MediaStore.ExtraSizeLimit, 1024*10);
cameraIntent.PutExtra(MediaStore.ExtraOutput, imageUri);
StartActivityForResult(cameraIntent, 0);
}
else
{
Toast.MakeText(this, "Not Camera", ToastLength.Long).Show();
}
}
And here is OnActivityResult the the camare send result here.
protected override void OnActivityResult(int requestCode, Result resultCode, Intent data)
{
if (resultCode == Result.Ok && (data != null))
{
Bundle extras = data.Extras;
Bitmap imageBitmap = (Bitmap)extras.Get("data");
imgViewAds.SetImageBitmap(imageBitmap);
MemoryStream stream = new MemoryStream();
imageBitmap.Compress(Bitmap.CompressFormat.Png, 0, stream);
addAds.AdsImage = stream.ToArray();
}
base.OnActivityResult(requestCode, resultCode, data);
}
but the data that sending to OnActivityResult is null and Image did not come to Image View.

When you pass EXTRA_OUTPUT with a URI to write to, the camera intent will be null and the picture is in the URI that you passed in.
so you could simply remove these two lines:
Android.Net.Uri imageUri = Android.Net.Uri.FromFile(imageFile);
cameraIntent.PutExtra(MediaStore.ExtraOutput, imageUri);
note that in this way you get the thumbnail of the image. so if you want the whole image you could use something like this (I haven't tested the code, but you could get the idea):
if (requestCode == CAMERA_REQUEST_CODE) {
if (resultCode == Activity.RESULT_OK) {
addAds.ImageName = Guid.NewGuid().ToString() + ".jpg";
Java.IO.File imageFile = new Java.IO.File(AdsAdapter.ImagePath(addAds.ImageName));
Uri uri = Uri.fromFile(file);
Bitmap bitmap;
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
bitmap = cropAndScale(bitmap, 300); // if you mind scaling
profileImageView.setImageBitmap(bitmap);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

Espresso test the camera intent when imageuri is passed as extra

I need to stub the camera intent by creating a image file at the path provided in the intent extra.
Espresso can only respond with activityresult. Where can i perform the operation to create the file at passed path from intent extra.
Code for launching camera
File destination = new File(Environment.getExternalStorageDirectory(), "app_name" + System.currentTimeMillis() + ".jpg");
imageUri = FileProvider.getUriForFile(getApplicationContext(), getApplicationContext().getPackageName() + ".fileprovider", destination);
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, AppConstants.REQUEST_CODE_CAMERA);
Code for stubbing intent in test
Instrumentation.ActivityResult result = new Instrumentation.ActivityResult(Activity.RESULT_OK, null);
intending(hasAction(MediaStore.ACTION_IMAGE_CAPTURE)).respondWith(result);

Ismael answer is perfect. For those looking for solution in java, Here it is.
intending(hasAction(MediaStore.ACTION_IMAGE_CAPTURE)).respondWith(
new Instrumentation.ActivityResult(Activity.RESULT_OK, null));
IntentCallback intentCallback = new IntentCallback() {
#Override
public void onIntentSent(Intent intent) {
if (intent.getAction().equals("android.media.action.IMAGE_CAPTURE")) {
try {
Uri imageUri = intent.getParcelableExtra(MediaStore.EXTRA_OUTPUT);
Context context = InstrumentationRegistry.getTargetContext();
Bitmap icon = BitmapFactory.decodeResource(
context.getResources(),
R.mipmap.ic_launcher);
OutputStream out = getTargetContext().getContentResolver().openOutputStream(imageUri);
icon.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush();
out.close();
} catch (IOException e) {
GenericUtility.handleException(e);
}
}
}
};
IntentMonitorRegistry.getInstance().addIntentCallback(intentCallback);
//Perform action here
onView(withId(R.id.tv_take_photo)).perform(click());

You need to create a IntentCallback to intercept the Uri value and save a sample image there.
Sample in Kotlin
intentCallback = IntentCallback {
if (it.action == "android.media.action.IMAGE_CAPTURE") {
it.extras.getParcelable<Uri>("output").run {
val inStream = Resources.getResource(sampleImageFileName).openStream()
val outStream = activity.contentResolver.openOutputStream(this)
ByteStreams.copy(inStream, outStream)
}
}
}
You need to register your callback before the intent trigger event
IntentMonitorRegistry.getInstance().addIntentCallback(intentCallback)
And don't to forget to unregister at end
IntentMonitorRegistry.getInstance().removeIntentCallback(intentCallback)

Ismael and Gupta's answers are correct. For those who want a complete example, I made a complete solution based on their example in Kotlin. The code below takes photo for multiple imageView and also verifies if the correct image is loaded in the respective imageview by checking the imageView.tag property. From the development code, the image name has to be set in the imageView.setTag(imageName)
private var imageName = "No Image Name"
#Test
fun verifyPhotoTaken() {
intending(hasAction(MediaStore.ACTION_IMAGE_CAPTURE)).respondWith(
ActivityResult(Activity.RESULT_OK, null))
takePhoto(R.id.imageview1, R.drawable.ic_launcher)
takePhoto(R.id.imageview2, R.drawable.some_image)
}
private fun takePhoto(imageViewId : Int, resourceId : Int) {
val cameraIntentCallback = intentCallback(resourceId)
IntentMonitorRegistry.getInstance().addIntentCallback(cameraIntentCallback)
onView(withId(imageViewId)).perform(click())
onView(withId(imageViewId)).check(matches(hasDrawable(imageName)))
IntentMonitorRegistry.getInstance().removeIntentCallback(cameraIntentCallback)
}
private fun intentCallback(resourceId : Int = R.drawable.ic_launcher) :IntentCallback {
return IntentCallback {
if (it.action == MediaStore.ACTION_IMAGE_CAPTURE) {
it.extras?.getParcelable<Uri>(MediaStore.EXTRA_OUTPUT).run {
imageName = File(it.getParcelableExtra<Parcelable>(MediaStore.EXTRA_OUTPUT).toString()).name
val context : Context = InstrumentationRegistry.getInstrumentation().targetContext
val outStream = context.contentResolver.openOutputStream(this)
val bitmap : Bitmap = BitmapFactory.decodeResource(context.resources, resourceId)
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outStream)
}
}
}
}
fun hasDrawable(drawableResource: String) : BoundedMatcher<View, ImageView> {
return object : BoundedMatcher<View, ImageView> (ImageView::class.java) {
override fun describeTo(description: Description?) {
description?.appendText("has drawable")
}
override fun matchesSafely(item: ImageView?): Boolean {
return item?.drawable != null && item.tag.toString().contains(drawableResource)
}
}
}