Part of my application involves fetching a random word from a list of words I have in a text file, "wordlist.txt". I'm trying to use Scanner to get my activity to interact with it and put the words into a java ArrayList, but Scanner does not detect the file I'm directing it to, giving me an Unhandled Exception:java.io.FileNotFoundException. What am I doing wrong? The relevant part of my code is below:
File wordList = new File("app\\src\\main\\res\\wordlist.txt"); // generate reference to file
final ArrayList<String> Dictionary = new ArrayList(); //create arraylist
final Scanner checker = new Scanner(wordList);
while (checker.hasNextLine()) {
final String data = checker.nextLine();
Dictionary.add(data);
}
checker.close();
Related
I am trying to dynamically create an image database using arcores new image tracking feature.
Currently I have a server serving me image locations which I download to the persistent data path of my device. I use these images to then create new database entries like below:
Public Variables:
public AugmentedImageDatabase newBD;
public AugmentedImageDatabaseEntry newEntry;
Here I do regex matching to get the images from the datapath and convert them to texture2D's in order to populate the AugmentedImageDatabaseEntry values.
Regex r1 = new Regex(#"https?://s3-([^.]+).amazonaws.com/([^/]+)/([^/]+)/(.*)");
// Match the input for file name
Match match = r1.Match(input);
if (match.Success)
{
string v = match.Groups[4].Value;
RegexMatch = v;
Texture2D laodedTexture = LoadTextureToFile(v);
laodedTexture.EncodeToPNG();
AugmentedImageDatabaseEntry newEntry = new AugmentedImageDatabaseEntry(v, laodedTexture, Application.persistentDataPath + "/" + v);
newEntry.Name = v;
newEntry.Texture = laodedTexture;
newEntry.TextureGUID = Application.persistentDataPath + "/" + v;
Debug.Log(newEntry.Name);
Debug.Log(newEntry.Texture);
Debug.Log(newEntry.TextureGUID);
newBD.Add(newEntry);
}
To get this to work on android I had to modify the source of ARCore's unity implementation a little so that the database.Add() function would work outside of the editor.
All of this seems to work seamlessly as I don't get any errors yet.
Once I change scenes to the ARCore scene I instantiate an ARCore Camera and create a new sessionconfig which holds a reference to the database populated above.
Here is that code:
public class NewConfigSetup : MonoBehaviour {
public GameObject downloadManager;
public GameObject arcoreDevice;
// Use this for initialization
void Start () {
downloadManager = GameObject.Find("DownlaodManager");
TestModelGenerator generator = downloadManager.GetComponent<TestModelGenerator>();
GoogleARCore.ARCoreSessionConfig newconfig = new GoogleARCore.ARCoreSessionConfig();
GoogleARCore.ARCoreSessionConfig config = ScriptableObject.CreateInstance<GoogleARCore.ARCoreSessionConfig>();
config.AugmentedImageDatabase = generator.newBD;
Debug.Log("transfered db size --------------- " + config.AugmentedImageDatabase.Count);
arcoreDevice.GetComponent<GoogleARCore.ARCoreSession>().SessionConfig = config;
Instantiate(arcoreDevice,new Vector3(0,0,0), Quaternion.identity);
}
}
When I run in the editor, I dont get errors untill I view the database in the editor, thats when I get this error:
ERROR: flag '--input_image_path' is missing its argument; flag
description: Path of image to be evaluated. Currently only supports
*.png, *.jpg and *.jpeg.
When I debug and look in the memory of the AugmentedImageDatabase. Everything seems to be there and working fine. Also once I build for android I get no errors whatsoever, as well as when I use 'adb logcat -s Unity' in the command line, no exceptions are thrown.
Could this be a limitation with the new ARCore feature? Are the AugmentedImageDatabases not allowing for dynamic creation on android? If so than why are there built in functions for creating them?
I understand the features are brand new and there is not much documentation anywhere so any help would be greatly appreciated.
I posted an Issue on ARCore's Github page, and got a response that the feature you're talking about isn't yet exposed in the Unity API :
https://github.com/google-ar/arcore-unity-sdk/issues/256
I want to append a line of text to an existing Azure cloud block blob from an Android device.
In VB.Net I would AcquireLease, getBlockBlobReference, DownloadToFile, add the line on the local files system, UploadToFile, ReleaseLease . Simple and secure, if a bit long-winded.
In Android, it looks a little more tricky. At the moment, my best solution is this:
CloudBlockBlob blob1=container.getBlockBlobReference(chosenOne+".txt");
String proposedLeaseId1 = UUID.randomUUID().toString();
OperationContext operationContext1 = new OperationContext();
blob1.acquireLease(15, proposedLeaseId1, null /*access condition*/,null/* BlobRequestOptions */, operationContext1);
AccessCondition condition = new AccessCondition();
condition.setLeaseID(proposedLeaseId1);
BlobInputStream blobIn = blob1.openInputStream();
blob1.downloadAttributes();
long blobLengthToUse = blob1.getProperties().getLength();
byte[] result = new byte[(int) blobLengthToUse];
blob1.downloadToByteArray(result,0);
blobIn.close();
CloudBlockBlob blob1 = container.getBlockBlobReference(chosenOne+".txt");
String proposedLeaseId1 = UUID.randomUUID().toString();
OperationContext operationContext1 = new OperationContext();
blob1.acquireLease(15, proposedLeaseId1, null /*access condition*/,null/* BlobRequestOptions */, operationContext1);
AccessCondition condition = new AccessCondition();
condition.setLeaseID(proposedLeaseId1);
BlobInputStream blobIn = blob1.openInputStream();
blob1.downloadAttributes();
long blobLengthToUse = blob1.getProperties().getLength();
byte[] result = new byte[(int) blobLengthToUse];
blob1.downloadToByteArray(result,0);
blobIn.close();
blob1.deleteIfExists(DeleteSnapshotsOption.NONE,condition, null, operationContext1);
BlobOutputStream blobOut = blob1.openOutputStream();
//this is a byte by byte write ...
//which is fine ... but no use if you want to replace ...
/*int next = blobIn.read();
while (next != -1) {
blobOut.write(next);
next = blobIn.read();
}*/
blobOut.write(result);
String strTemp="This is just a test string";
blobOut.write(strTemp.getBytes());
blobOut.close();
Apart from being extremely long-winded, I am concerned that as soon as I delete the blob, the lease will go and that I may hit integrity issues. I would appreciate any help in making this code simpler and more secure. I know that Microsoft are planning to introduce append blobs in 3Q 2015, but I want to implement this now.
You can call PutBlock to upload the appended content (the maximum size of each block is 4MB, so please split the appended content into blocks if required), and then call PutBlockList on this blob by passing in the previously committed blocks plus and newly appended blocks.
I need to read a .json that I have within my .APK. I have tried many times I've even spend more than 1 day in it.
I think the problem is that FLHAS PROFESSIONAL use, but not want to give surrendered.
Nor loaded pictures new URLRequest(pictURL) :
Here are some codes that do not work on your phone (Android):
var pictLdr:Loader = new Loader();
var pictURL:String = "basecon/avatar3d.jpg";
var pictURLReq:URLRequest = new URLRequest(pictURL);
pictLdr.load(pictURLReq);
this.addChild(pictLdr);
And so I read the JSON and does not work
var tempFiles:File = File.desktopDirectory;
tempFiles = tempFiles.resolvePath("basecon/conversaciones.json");
trace(tempFiles.url); // app-storage:/images
//file:///storage/sdcard1/basecon/conversaciones.json
Why? How Can I read my JSON ?
The PO has done his best to ask a question in English but it did end up being a little off. What he meant is "how to read a json file", it's not that he can't read it, it's that he doesn't know how.
A File object gives you information about a file but not about its contents so trying to read a file with a File object won't work. You simply need to load that file and read its contents.
var tempFiles:File = File.applicationDirectory;
var jsonFile:File = tempFiles.resolvePath("basecon/conversaciones.json");
var fileLoader:URLLoader = new URLLoader();
fileLoader.addEventListener(Event.COMPLETE, handleFile);
fileLoader.load(new URLRequest(jsonFile.url));
Then in the handleFile listener:
var jsonData:String = String(fileLoader.data);
var jsonObject:Object = JSON.parse(jsonData);
Pretty simple.
I am trying to populate a PDF template with a family tree. The root node is the descendent, and it branches out into each pair of ancestors.
I am using PDF stamper to populate the form that goes back 3 generations.
I have created the above form in Open Office 4.1.1. I added Label Fields using the Form Design Mode and exported to PDF with "Create Forms" checked and using PDF format (also tried FDF).
The following is my iTextG integration:
reader = new PdfReader( src );
stamper = new PdfStamper( reader, baos );
stamper.setFormFlattening( true );
form = stamper.getAcroFields();
xfa = form.getXfa();
Log.i("FamilyTreeStorage Form Type", ( xfa.isXfaPresent() )? "XFA Form":"AcroForm" );
Set<String> fields = form.getFields().keySet();
if ( !fields.isEmpty() ){
for( String key : fields ){
Log.i("FamilyTreeStorage", String.format("key= %s; type= %d;", key, form.getFieldType( key )) );
}
}else{
Log.i("FamilyTreeStorage", "AcroFields returned empty set.");
}
The thing is that the form.getFields() does read form fields properly in PDF docs that I have gotten from other sources that contain AcroForms. The PDF that I generated with Open Office only returns an empty set for acro fields. It thinks there is no acro form. How do I populate non-acro form forms with iTextG?
I currently have a compiled jar file that I would like to use on an android device. The code outputs to the command line using System.out.println().
How would I create a wrapper to grab the stdout and put it in a text view on an android device? Would I need to make any changes to the jar (I do have all the source code) to allow the wrapper?
Thanks in advance.
I think you'll need to make some changes. You can set standart output by calling
System.setOut(PrintStream out)
// Reassigns the "standard" output stream.
Where out is your own class that will print data to text view. See swing solution. Just set appending to text view and you can use this code.
Or just create one method
void log(String message);
where you appending text to your view. Then change all println() calls to this.
First you should consider that Android has a specific Java VM called Dalvik and not any jar can be ran under it.
If there's one point in your jar where output occurs, the best option would be to create a usual application with a TextView, include your jar to it's build path and replace a call to println() with output to it:
public void print(String msg) {
mTextView.setText(msg);
}
If there're many sources of output you could run you jar using java.lang.Process and use it's getInputStream() method to read printed messages:
public static final String XBOOT_CLASS_PATH = "-Xbootclasspath:/system/framework/core.jar"
public static final String CLASS_PATH = "-classpath /path/to/your/file.jar com.your.package.name"
...
Process p = new ProcessBuilder("dalvikvm", XBOOT_CLASS_PATH, CLASS_PATH).start();
BufferedReader reader = new BufferedReader (new InputStreamReader(p.getInputStream()));
String msg = reader.readLine();
if (msg != null) {
mTextView.setText(msg);
}
// Cleanup omitted for simplicity
If it's an executable jar file here is a working example
Add this simple executable HelloWorld jar file to your Android Project's build path
If the jar file doesn't have a package, then you will have to use Reflection to invoke methods in it.Other wise you can just import the class files and invoke the main method directly.(This example jar has a package "psae")
eg:
TextView tv = (TextView)findViewById(R.id.textv);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PrintStream ps = new PrintStream(baos);
System.setOut(ps);
String[] params = {"Aneesh","Joseph"};
psae.HelloWorld.main(params);
String output = baos.toString();
tv.setText(output)
If the jar file just has a default package, then you won't be able to import class files from that jar, and hence you will have to use Reflection to invoke the method.
TextView tv = (TextView)findViewById(R.id.textv);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PrintStream ps = new PrintStream(baos);
System.setOut(ps);
try {
//pick the entry class from the jar Manifest
//Main-Class: psae.HelloWorld
Class myClass = Class.forName("psae.HelloWorld");
//since this has a package, there is no need of reflection.This is just an example
//If the jar file had just a default package, the it would have been something like the below line (and this is where it would be useful)
//Class myClass = Class.forName("Main");
Method myMethod = myClass.getMethod("main", String[].class);
//parameters to the main method
String[] params = {"Aneesh","Joseph"};
myMethod.invoke(null, (Object) params);
String output = baos.toString();
tv.setText(output);
}
catch(Exception d)
{
tv.setText(d.toString());
}