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Images can't contain alpha channels or transparencies

... AFAIK png with transparency is not allowed. use jpg OR update your png (photoshop or whatever you using to create the png) and delete the transparency areas. if you work with shadows, use jpg, that will do no headaches. s...
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Uploading images using Node.js, Express, and Mongoose

... @AksharPrabhuDesai Yes and no. Lets say you have a photo upload/crop tool. If you were to allow the user to upload directly to your public folder, you have a serious security flaw. In this case, its best to upload to a tmp folder and then move into your public folder after co...
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How can I save an image to the camera roll?

... You use the UIImageWriteToSavedPhotosAlbum() function. //Let's say the image you want to save is in a UIImage called "imageToBeSaved" UIImageWriteToSavedPhotosAlbum(imageToBeSaved, nil, nil, nil); Edit: //ViewController.m - (IBAction)onClickSavePhoto:(...
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Adding images or videos to iPhone Simulator

...ng to use UIImagePickerController with UIImagePickerControllerSourceTypePhotoLibrary , but it says, "No photos". Where does the simulator get the images from? Where should I copy the images so that they are displayed in the simulator? ...
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Android Camera : data intent returns null

... it works!! private void openCameraForResult(int requestCode){ Intent photo = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); Uri uri = Uri.parse("file:///sdcard/photo.jpg"); photo.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, uri); startActivityForResult(photo,requestCode); } i...
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When should one use RxJava Observable and when simple Callback on Android?

... the advantages of RxJava over Callback is very limited. The simple getUserPhoto example: RxJava: api.getUserPhoto(photoId) .observeOn(AndroidSchedulers.mainThread()) .subscribe(new Action1<Photo>() { @Override public void call(Photo photo) { //...
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Capture Image from Camera and Display in Activity

....imageView = (ImageView)this.findViewById(R.id.imageView1); Button photoButton = (Button) this.findViewById(R.id.button1); photoButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { i...
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How to access a mobile's camera from a web app?

In my web app (not native app) for mobiles, I want to take a photo and upload it, but I don't want to use Adobe Flash. Is there any way to do this? ...
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Rails 4 multiple image or file upload using carrierwave

... end end private def save_attachments params[:motherboard_attachments]['photo'].each do |photo| @motherboard_attachment = @motherboard.motherboard_attachments.create!(:photo => photo) end end def update_attachments @motherboard.motherboard_attachments.each(&:destroy) if @motherb...
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Store images in a MongoDB database

...e"; File imageFile = new File("/users/victor/images/image.png"); GridFS gfsPhoto = new GridFS(db, "photo"); GridFSInputFile gfsFile = gfsPhoto.createFile(imageFile); gfsFile.setFilename(newFileName); gfsFile.save(); share ...