I have jet another problem with my project. To display some Panoramas in my application I'm using PanoramaGL lib. For the library I use a JSON-File, which provides some settings, how it will be displayed. I want to let the user change some of those settings, like accelerometer rotation and so on. So I need to access these values in my JSON-File. And this is the part, where I'm really struggling.
The File is in raw folder and for PanoramaGL I'm passing a value like: "res://raw/json_k55".
Context context = this.getApplicationContext();
pano = getIntent().getExtras().getString("pano");
panorama = new PLJSONLoader(pano);
if(panorama!=null)
this.load(panorama, true, new PLTransitionBlend(2.0f));
}
Since I'm not using actual HTTP-Request or getRessource(), I really don't know, how to get some objects of this file changed, for example on button click. The JSON-File is here: json_k55
Related
I'm working with a tutorial fromRay Wenderlich (https://www.raywenderlich.com/124438/android-listview-tutorial). In the tutorial, an image is retrieved via the Internet using a URL specified in the locally stored JSON file:
"image" : "https://www.edamam.com/web-img/341/3417c234dadb687c0d3a45345e86bff4.jpg"
The string is stored in the imageUrl variable:
recipe.imageUrl = recipes.getJSONObject(i).getString("image");
Then the image is loaded using Picasso:
Picasso.with(mContext).load(recipe.imageUrl).placeholder(R.mipmap
.ic_launcher).into(thumbnailImageView);
I would like to change the code in the tutorial so that the image is retrieved from the drawable folder within the app, rather than via the Internet. I've been working on this on and off for several days. I assumed it was a matter of changing the URL in the JSON data so that it specified a path to the image file in the drawable folder like this:
"image" : "android.resource://com.raywenderlich.alltherecipes/drawable/chicken.jpg"
So far I've been unsuccessful. Am I on the right path, or am I way off? I'm an Android newbie. I'm used to working with plists in Xcode (although I'm no expert there, either).
In my project i need to include searchs to a API Rest to query with a url that points to a jpg picture and it returns a list of urls with similar pictures.
Google Images performs via web like i am looking for, but the clients for Android that i have found (github projects) they work simply with an input text.
The simplest code would be something as below:
String inputUrlPic = "https://cdn.pixabay.com/photo/2014/03/14/20/13/dog-287420__340.jpg";
String[] returnedUrlPictures = null; //list of returned pictures similars to inputUrlPic
ReverseImageApi reverseImageApi = new ReverseImageApi();//My desired Api object
returnedUrlPictures = reverseImageApi.findSimilarPicturesFromUrl(inputUrlPic); //Ok, it would be an asynctask
So, my question is, exists a API or an Android client API to perform in this way?
In a mobile app one or more images (only jpeg/jpg) - either taken with built-in camera or selected from photo library - are displayed before uploading to a web service.
But loading an image into a FMX TImage / TImageControl / TImageViewer and saving it to stream (or file) makes it smaller, about 45%.
Any idea why this happens and is there a way to avoid the reduction in size ?
As asked for this is the simple test code, nothing special to it:
procedure TImageTest.btnTestClick(Sender: TObject);
var
aFile : string;
begin
if not OpenDialog.Execute then
Exit;
// get jpg file name for loading
aFile := OpenDialog.Filename;
// load into TImage, TImageControl or TImageViewer
ImageViewer.Bitmap.LoadFromFile(aFile);
// and save to file for comparison
ImageViewer.Bitmap.SaveToFile(aFile+'_2.jpg');
end;
The ideal solution to avoid losing image quality is by not relying on the visual controls to store your data. Instead, keep a background object containing the raw image file, and only use the visual controls to display this image to the user. When it comes to saving the image, save it from this background object rather than the visual control.
The same concept applies for about all aspects of programming - visual controls are only meant for visual display to the user, not for storing data.
I have yet another pesky question for people who understand how Google Drive SDK works. On Android platform, I am creating my own custom thumbnails for JPEG image files ( thumbnail is a reduced JPG of the most important detail of the parent image ), The size is a bit non-standard - 384 x 128px, but well within limits stated in the documentation. So, the code goes like this:
// thumbnail
String myThumb = "test.tnl";
Thumbnail tn = new Thumbnail();
tn.setMimeType("image/jpeg");
tn.setImage(Base64.encodeBase64String(myThumb.getBytes()));
// define meta-data
File body = new File();
body.setTitle("test.jpg");
body.setDescription("bla bla");
body.setMimeType("image/jpeg");
body.setThumbnail(tn);
File gooFl = drvSvc.files()
.insert(body, new FileContent("image/jpeg", new java.io.File(test.jpg)))
.execute();
and executes flawlessly (there are more 'body' elements I don't list here) and everything works like a charm. But when I download the image, my thumbnail is gone, replaced by standard Google thumbnail - s220 type.
I did notice the documentation statement:
As with indexable text, Drive automatically generates thumbnails for many common file types. For shortcuts and other file types Drive can not render, you can provide a thumbnail image generated by your application.
Reading it ambiguously, I was hoping that by supplying my own thumbnail to a known MIME type, I will keep Google Drive from generating its standard one, but it probably is not the case. So the question remains. Is there a solution to my problem? Having custom thumbnails for standard "image/jpeg" MIME types? Or is there a work-around, perhaps another custom field I can stick some 10Kb of binary data in? I need the thumbnails in my Android viewer - another app.
Thank you, sean
Google Drive will only use custom thumbnails for non-standard MIME types, so you can't override the one for jpeg. Your app can use a custom file property to store and read proprietary data:
https://developers.google.com/drive/properties
In a typical as3 or flex project, after loading xml file, i load jpg files (thumbnails etc) manually, so i can use them in sprites / movie clips etc..
currently i am working on air mobile project. and i am attempting to load some thumnails(jpg) file to list view (spark) and using custom item renderer.
itemrenderer has an spark image component in it. and its data property is set to Image object.
i can check that image files do exists in file application directory.
do i need to load all those thumbnails in memory. then use them?
image object will autoload source file object?? once assigned?
do i have to tell it explicitly to load file object? what events should i use to amke sure , image file object is loaded.?
any ideas?
thanks in advance.
Spark images are really easy to work with. All you need is a url.
<s:Image source="http://someimagesite.com/someimage.png" width="100%" height="100%" />
You can also use bitmap data or even embed directly into the source tag.
[Embed(source="image.png")] private var myImage:Class
mySparkImage.source = new myImage() as BitmapData;
<s:Image source="#Embed('image.png')" />
Take a look:
http://help.adobe.com/en_US/flex/using/WSc5cd04c102ae3e97-33ad5caa12c719dc7c8-8000.html