I have been trying to save game data using a binary formatter and Application.persistentDataPath on my Tango device. After saving however, the file is nowhere to be found.
Right now the path is reading out as "Storage/emulated/0/Android/data/com.mine.project/files/filename.bin", but as stated above, the path doesn't actually exist anywhere.
Is there another way to save all of this data on the Tango that I have yet to find? If not, is there a way to get these files to show up?
This is the code that I am currently using, minus some debugging functions I use.
string path = Application.persistentDataPath + Path.DirectorySeparatorChar + "file.bin";
BinaryFormatter bf = new BinaryFormatter ();
FileStream file = File.Open (path, FileMode.OpenOrCreate);
bf.Serialize(file, data);
file.Close ();
From what I can tell this isn't throwing any errors, I can even find the file again via the File.Exists() function, but I need to find the file again for access through other programs, and so far it has proven impossible.
Related
I need to load/save the number of coins a user has earned in my Unity game with saved games for Play Games Services.
There is an example on how to save an image on this page: https://developer.android.com/games/pgs/unity/saved-games#write_a_saved_game
Can someone tell me how I can load/save a number instead of an image?
To be precise, I wouldn't say you are exactly saving an image. I mean, you do save it, but only as a cover for your game save file and I don't know if you can retrieve it (maybe you can, I haven't checked that really).
Probably the most important part of using google play save system is byte[] savedData argument. It's just a byte array, and it's up to you what are you going to pass there and how are you going to interpret that data on game load.
There are a lot of ways you could approach it. I personally create a custom GameSave object with all my data that I want to save, then I serialize it using JsonUtility.
string json = JsonUtility.ToJson(gameSave);
After that, I use MemoryStream and BinaryFormatter to convert the data in my json to byte array:
MemoryStream memoryStream = new MemoryStream();
BinaryFormatter binaryFormatter = new BinaryFormatter();
binaryFormatter.Serialize(memoryStream, json);
byte[] data = memoryStream.GetBuffer();
Then you would have to pass that data to savedGameClient.CommitUpdate method as an argument.
Of course, that's just one of the ways of doing that, you can send something else than json from serialized class object.
Other stuff is pretty well documented, so once you handle that, you should manage to do the rest.
My game includes image files and json configuration files that I would like to make accessible in the deployed game's folder structure so that players can easily edit or swap them out.
I have considered/tried the following approaches:
My initial approach was to use the Resources folder and code
such as Resources.Load<TextAsset>("Rules.json"). Of course,
this did not work as the resources folder is compiled during builds.
I investigated the Addressables and AssetBundle features, but they do not seem aimed at solving this problem.
After asking around, I went for using .NET's own file methods, going
for code like File.ReadAllText(Application.dataPath + Rules.json). This seems like it will work, but such files are still not deployed automatically and would have to manually be copied over.
It seems that the StreamingAssets folder exists for this, since the manual advertises that its contents are copied verbatim on the target machine. I assume that its contents should be read as in the previous point, with non-Unity IO calls like File.ReadAllText(Application.streamingAssetsPath + Rules.json)?
So yeah, what is the 'canonical' approach for this? And with that approach, is it still possible to get the affected files as assets (e.g. something similar to Resources.Load<Sprite>(path)), or is it necessary to use .NET IO methods to read the files and then manually turn them into Unity objects?
After asking the same question on the Unity forums, I was advised to use the StreamingAssets folder and told that it is necessary to use .NET IO methods with it.
An example for how to load sprites as files using standard IO can be seen here: https://forum.unity.com/threads/generating-sprites-dynamically-from-png-or-jpeg-files-in-c.343735/
static public Sprite LoadSpriteFromFile(
string filename,
float PixelsPerUnit = 100.0f,
SpriteMeshType type = SpriteMeshType.FullRect)
{
// Load a PNG or JPG image from disk to a Texture2D, assign this texture to a new sprite and return its reference
Texture2D SpriteTexture = LoadTexture(filename);
Sprite NewSprite = Sprite.Create(
SpriteTexture,
new Rect(0,
0,
SpriteTexture.width,
SpriteTexture.height),
new Vector2(0, 0),
PixelsPerUnit,
0,
type);
return NewSprite;
}
static private Texture2D LoadTexture(string FilePath)
{
// Load a PNG or JPG file from disk to a Texture2D
// Returns null if load fails
Texture2D Tex2D;
byte[] FileData;
if (File.Exists(FilePath))
{
FileData = File.ReadAllBytes(FilePath);
Tex2D = new Texture2D(2, 2);
// If the image is blurrier than what you get with a manual Unity import, try tweaking these two lines:
Tex2D.wrapMode = TextureWrapMode.Clamp;
Tex2d.filterMode = FilterMode.Bilinear;
// Load the imagedata into the texture (size is set automatically)
if (Tex2D.LoadImage(FileData))
{
return Tex2D; // If data = readable -> return texture
}
}
return null;
}
I have been really cracking my head trying to write and read png files into a folder in Windows Phone 8. From few blogs sites and codeplex i found that the there is an extension to the WritableBitmap Class which provides few extra functionalities. ImageTools has PNG encoder and decoder. But I really cant find examples to use them.
What Im trying to achieve here is to create a folder called page and then in it a file called Ink File. I want to convert the bitmap to a PNG and store it there. The bitmap is created from the strokes drawn on a canvas. The class ImageTools provides a function called ToImage to convert the strokes from the canvas to image.
For storing
ExtendedImage myImage = InkCanvas.ToImage();
var encoder = new PngEncoder();
var dataFolder = await local.CreateFolderAsync("Page", CreationCollisionOption.OpenIfExists);
StorageFile Ink_File = await dataFolder.CreateFileAsync("InkFile", CreationCollisionOption.ReplaceExisting);
using (var stream = await Ink_File.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite))
{
using (var s = await Ink_File.OpenStreamForWriteAsync())
{
encoder.Encode(myImage, s);
await s.FlushAsync();
s.Close();
}
}
Is this a correct method? I receive some null exceptions for this. How do i find if the image is saved as png. How is this image saved? Is it encoded and saved in a file or is it saved as a png itsef. And how do we read this back?
I have checked out this, this , this and lot more like this.
I'm developing app for WP8
I have used the PNG Writer Library found in ToolStack and it works :)
I am working on Augmented reality using Vuforia sdk, and i want to load 3d object on runtime, i want to fetch it from web-service and load it when i need that, So basically my question only is this how can we load any .h file on run time. First is this possible that we can load it on runtime and if possible then how can we do that.
If you have dynamic data, putting it into a .h file doesn't make sense. Headers are only useful while the program is being compiled, not at run time.
AFAIK vuforia just puts arrays of vertical, triangles, etc. into h file. So you don't need to load h file in runtime (and this is impossible, there is no h files when programm is running). Instead you need to get those arrays and give them to vuforia
just download that file from network, store it within application directories and load it like the sample data bundled with the app
NSString * pathToDownloadedFile; //should have path to your file
QCAR::DataSet *dataSet = nil;
QCAR::TrackerManager& trackerManager = QCAR::TrackerManager::getInstance();
QCAR::ImageTracker* imageTracker = static_cast<QCAR::ImageTracker*> (trackerManager.getTracker(QCAR::Tracker::IMAGE_TRACKER));
dataSet = imageTracker->createDataSet();
dataSet->load([pathToDownloadedFile cStringUsingEncoding:NSASCIIStringEncoding], QCAR::DataSet::STORAGE_ABSOLUTE);
imageTracker->activateDataSet(dataSet);
I have developed a C# application, in the application the users choose a photo for each record. However the user should also be able to change the pre-selected photo with a newer one. When the user changes the photo the application first deletes the old photo from the application directory then copies the new photo, but when it does that the application gives an exception because the file is used by the application so it cannot be deleted while the application is running. Does any one have a clue how to sort this out? I appreciate your help
This is the exception
The process cannot access the file
'D:\My
Projects\Hawkar'sProject\Software\Application\bin\Debug\Photos\John
Smith.png' because it is being used by
another process.
//defining a string where contains the file source path
string fileSource = Open.FileName;
//defining a string where it contains the file name
string fileName = personNameTextBox.Text + ".png" ;
//defining a string which specifies the directory of the destination file
string fileDest = dir + #"\Photos\" + fileName;
if (File.Exists(fileDest))
{
File.Delete(fileDest);
//this is a picturebox for showing the images
pbxPersonal.Image = Image.FromFile(dir + #"\Photos\" + "No Image.gif");
File.Copy(fileSource, fileDest);
}
else
{
File.Copy(fileSource, fileDest);
}
imageIDTextBox.Text = fileDest;
First of all, you code is not good.
The new image is only copied if there is currently no image (else).
But if there is an old image, you only delete this image, but never copy the newer one (if).
The code should better look like this:
if (File.Exists(fileDest))
{
File.Delete(fileDest);
}
File.Copy(fileSource, fileDest);
imageIDTextBox.Text = fileDest;
This code should work, but if you are getting an exception that the file is already in use, you should check "where" you use the file. Perhaps you are reading the file at program start. Check all parts of your program you are accessing these user files if there are some handles open.
Thanks a lot for your help and sorry for the mistake in the code I just saw it, my original code is just like as you have written but I don't know maybe when I posted accidentally I've put like this. when the application runs there is a picturebox which the image of each record is shown, that is why the application is giving an exception when I want to change the picture because it has been used once by the picturebox , however I've also tried to load another picture to the picture box before deleting the original one but still the same. I've modified the above could if you want to examine it