This question already has answers here:
Low picture/image quality when capture from camera
(3 answers)
Closed 3 years ago.
I have an Android app which opens the camera to take a pic:
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, PICTURE_RESULT);
If it is called the camera is opened and I can take picture. But the preview where to click OK or Cancel is already very bad quality.
This is strange as this is not implemented by my app. Are there any parameters to configure for the camera intent to increase the quality.
This example im uploading to firebase:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == GALLERY_INTENT && resultCode == RESULT_OK){
Uri uri = data.getData();
progressDialog.setMessage(UPLOADING);
progressDialog.show();
StorageReference filePath = storageRef.child(STORAGE_FOLDER_NAME).child(recipeTitle.getText().toString());
filePath.putFile(uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Toast.makeText(CreateNewRecipeActivity.this, UPLOAD_COMPLETE, Toast.LENGTH_SHORT).show();
progressDialog.dismiss();
}
});
}
}
Here im getting the full image
Uri uri = data.getData();
Related
I'm using Zxing barcode scanner and Rg Pop up pages in Xamarin forms. The whole idea is that when the camera catches a barcode it displays a pop up. The problem is that I want to wait for the user to close the pop up before it scans again. Now if I keep the camera towards a barcode it keeps showing multiple alerts.
public async void Scan(Result result)
{
//random linq to get product
if (product != null)
{
await PopupNavigation.PushAsync(new DisplayDialog(product));
}
}
Method for when user closes the window
private async void Button_OnClicked(object sender, EventArgs e)
{
await PopupNavigation.RemovePageAsync(this);
}
I tried using a flag to stop the scan and setting isScanning or isAnalyzing to false but it didnt work. Any ideas? Thank you!
use a bool to control the flow
bool popup = false;
public async void Scan(Result result)
{
if (popup) return;
//random linq to get product
if (product != null)
{
popup = true;
await PopupNavigation.PushAsync(new DisplayDialog(product));
}
}
then whenever your popup is dismissed, reset the popup flag to false
A callback for the camera never gets invoked when I take a photo. It only gets invoked when I select existing photo from a gallery.
MessagingCenter.Subscribe<byte[]>(this, "ImageSelected", (args) =>
{
Device.BeginInvokeOnMainThread(() =>
{
//Set the source of the image view with the byte array <<== NEVER INVOKED
Image img = new Image();
MemoryStream stream = new MemoryStream((byte[])args);
//img.Source = ImageSource.FromStream(() => new MemoryStream((byte[])args));
imagePallet.Source = ImageSource.FromStream(() => { return stream; });
imagePreview.IsVisible = true;
});
});
I am using the setup outlined here:
https://baglabs.com/2017/01/12/xamarin-forms-using-camera-photo-gallery/
I noticed the OnActivityResult executes in MainActivity.cs but the Data property of Intent is always null when select photo taken from camera, it's only set when selecting photo from gallery as before.
protected override void OnActivityResult(int requestCode, Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
//Since we set the request code to 1 for both the camera and photo gallery, that's what we need to check for
if (requestCode == 1)
{
if (resultCode == Result.Ok)
{
if (data.Data != null) --<<==ALWAYS NULL WHEN ACCEPTING PHOTO TAKEN WITH CAMERA
{
//Grab the Uri which is holding the path to the image
Android.Net.Uri uri = data.Data;
//Read the meta data of the image to determine what orientation the image should be in
int orientation = getOrientation(uri);
//Stat a background task so we can do all the bitmap stuff off the UI thread
BitmapWorkerTask task = new BitmapWorkerTask(this.ContentResolver, uri);
task.Execute(orientation);
}
}
}
Clearly I am missing something. Many thanks!
I want the user to be able to go into settings of my app and select from the images provided or select a photo from their internal or external storage to be applied to the background of the MainActivity. Also I want this image to stay even after the app has been killed until the user decides to change the background again. I have tried multiple codes and I run into errors every time and the main problem I'm having is sending this intent from one Activity to another. I have used code that allow me to apply an image to an ImageView within the same Activity but I cannot take that code and get it to send across to another Activity.
Targets:
LinearLayout - backgroundtop (MainActivity)
Imageview(onClick) - gallery (DxsettingsActivity)
Imageview(onClick) - dx (DxsettingsActivity)
"Gallery" and "dx" are in a customview dialog.
When "gallery" is clicked internal/external storage is opened to select background resource of "backgroundtop" and save that image until user changes it again.
When "dx" is clicked it opens DxWallpaperActivity which will have the images to be selected and saved as the background of "backgroundtop".
I hope I have explain well enough. I'll provide more info if needed. Thank you in advance. I have been struggling with this for days to no avail.
Update: I have managed to accomplish setting and saving images from in-app images to the background. I have tried everything under the sun to pull image from gallery and do the same. I have managed to open gallery and select an image but I can't figure out onActivityResult then send that to the background. Please help.
This is the only code I've got to work but it doesn't have shared preferences and it for an imageview. How can I change it for backgroundresource on linearlayout?
}
private static final String STATE_IMAGE_URI =
"STATE_IMAGE_URI";
private Uri imageUri;
public void onSaveInstanceState(Bundle state) {
super.onSaveInstanceState(state);
if (imageUri != null ) {
state.putParcelable(STATE_IMAGE_URI, imageUri);
}
}
public void onRestoreInstanceState(Bundle state) {
super.onRestoreInstanceState(state);
if(state == null || !state.containsKey(STATE_IMAGE_URI))
return;
setImage((Uri) state.getParcelable(STATE_IMAGE_URI));
}
private static final int IMAGE_REQUEST_CODE = 9;
private void chooseImage() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,
"Select picture"), IMAGE_REQUEST_CODE);
}
public void onActivityResult(int requestCode, int.
resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode != IMAGE_REQUEST_CODE) {
return;
}
if (resultCode != Activity.RESULT_OK) {
return;
}
setImage(data.getData());
}
private void setImage(Uri uri) {
imageUri = uri;
imageview1.setImageURI(uri);
}
private void nothing() {
And for the button clicked
chooseImage();
I have been looking in thousand posts for this, but I do not find how to solve my problem.
I have an ImageView. When the user clicks on this ImageView, a DialogFragment is displayed, and the user can choose between taking a new picture with the camera, or selecting a picture from the gallery. Until here everything works fine.
The problem is, that the picture selected by the user, should replace the current one in the ImageView, but this bit, is the one that is not working, because the onActivityResult() function that executes this code is not being executed, so the image in the ImageView always remains the same. I would appreciate any help, because I do not see or understand, why this code is not being executed.
I am getting a warning in the LogCat right after the user selects the image:
05-07 12:17:11.542: I/ActivityManager(59): Displayed activity com.android.gallery/com.android.camera.ImageGallery: 935 ms (total 935 ms)
05-07 12:17:12.812: W/FragmentActivity(3614): Activity result no fragment exists for index: 0x10001
05-07 12:17:12.862: W/InputManagerService(59): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy#45fd9c38 (uid=10016 pid=317)
Activity.java:
private ImageView imageLoader = null;
imageLoader = (ImageView) findViewById(R.id.f_imageLoader);
imageLoader.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
ImageLoaderDialog imageLoaderDialog = new ImageLoaderDialog(imageLoader);
imageLoaderDialog.show(getSupportFragmentManager(), "imageLoaderDialog");
}
Activity.xml:
<ImageView
android:id="#+id/f_imageLoader"
android:layout_width="wrap_content"
android:layout_height="0dip"
android:layout_weight="0.20"
android:contentDescription="#string/imgDesc"
android:src="#drawable/my_image" />
ImageLoaderDialog.java:
//Dialog for choosing between new camera image or gallery image.
public class ImageLoaderDialog extends android.support.v4.app.DialogFragment {
private ImageView targetImageView = null;
final int TAKE_PICTURE = 0;
final int PICK_PHOTO = 1;
public ImageLoaderDialog (View view) {
targetImageView = (ImageView) view;
}
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Selecciona");
final String[] imageSources = getResources().getStringArray(R.array.imageSources);
builder.setItems(imageSources, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
switch(item) {
case TAKE_PICTURE:
Intent takePicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePicture, TAKE_PICTURE);
break;
case PICK_PHOTO:
Intent pickPhoto = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(pickPhoto, PICK_PHOTO);
break;
}
}
});
return builder.create();
}
//Set image to user's selected image.
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
if (resultCode == android.app.Activity.RESULT_OK) {
Uri selectedImage = intent.getData();
Log.i("IMAGEN", ""+selectedImage);
targetImageView.setImageURI(selectedImage);
}
}
}
Any help would be very appreciated.
The hosting activity overrode the onActivityResult but did not make a call to super.onActivityResult for unhandled result codes. Apparently even though the fragment is the one making the startActivityForResult call, the activity gets the first shot at handling the result. This makes sense when you consider the modularity of fragments. Once I implemented super.onActivityResult for all unhandled results, the fragment got a shot at handling the result.Try This:
getActivity().onActivityResult(requestCode, resultCode, intent);
ImageView Iv2 = (ImageView)findViewById(R.id.imageView2);
textId++;
String imgId = "full_" + textId;
int Ivid = getResources().getIdentifier(imgId, "drawable", getPackageName());
Iv2.setImageResource(Ivid);
Iv2.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
clapping = MediaPlayer.create(textBasedquiz.this, R.raw.applause);
clapping.start();
Intent intent = getIntent();
overridePendingTransition(0, 0);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
finish();
overridePendingTransition(0, 0);
startActivity(intent);
return true;
}
});
*Basically im trying to build an quiz for kids and in this im selecting images randomly i want to restart same code after user has touch on right image so he/she can get another question , but activity must start after sound has been played Please Guys help me i really need your valued comments *
You can setResult and go to activity from where you have called your this activity. Pass the value along and based on result of value received, call the saem activity passing new value that you just got from the same activity.
static int RESULT_OK = 100;
STATIC INT RESULT_CANCEL = 110;
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch(resultCode) {
case RESULT_OK:
// Get flags/values from intent Intent.FLAG_ACTIVITY_NO_ANIMATION
// Create new activity setting the intent to call
// and pass the values
startActivity(intent);
break;
}
}
I think this will be more straight forward rather than calling same Activity from itself only.