Android :: Reading Text Or XML File In Android Java
Feb 2, 2010
I am currently working on a group project to build an Android game. I have been delegated the task of building a PC based level editor (which is all done). All I have to do now is decide on the file format for the map that is outputted. At the moment it is just a standard text file with different numbers to represent different tiles; E.G 0=path 1=wall 2=enemy.
1 1 1 1 1 1 1 1
1 0 0 0 2 0 0 1
1 1 1 1 1 1 1 1
The actual Android game then takes this file and stores the values into a 2D Array. However those who are making the actual game are having difficulty opening a text file, and others have told me it has to be done using an XML file. I have now been asked to find a away to take in this input. how I would read the text file and put the values into a int array[][] ? Or if it is easier, use an XML file and tell me how to format that file and read the values into a int array[][]
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Oct 2, 2010
I am trying to develop application for android . how I can get the defining line of textfile? For instance I have to read 15. line of textfile. how I can do that?
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Jun 16, 2009
I am getting java.lang.ExceptionInInitializerError while reading yml file.The code that i am using for reading yml file is InputStream inputdatfile=Myclass.this.getResources().openRawResource (R.raw.datafile); Map<String, List<Map>> data = (Map<String, List<Map>>)Yaml.load (inputdatfile); I am getting the error in the second line.My yml file is in res aw folder. the external jar file i am using here to read yml file is jyaml1.3.jar. i tried to add <uses-library android:name="org.ho.yml" / > in manifest file that time i am not able to install the app in
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Sep 26, 2010
I've figured out how to draw Arabic characters properly (connected and right to left) using string literals like this:
textView.setTypeFace(Typeface.createFromAssets(getAssets(),"DejaVuSans.ttf"));
textView.setText("uFEB3uFE92uFE98uFE94");
But for some reason I cannot get the arabic to format properly if I read anything from a file using InputStreams like this:.....................
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Oct 12, 2011
I have to create an app that draws a map reading data from a text file : for example the text file can be like
. index x y orientation
vertex 1 0 0 0
vertex 2 5 0 0.5
vertex 3 10 2 0.3
so i need to do in java something like fscanf does in c (fscanf scans the text file for known formatted data... example, in the file i written i know each line has a string float float float and i need to put them into a specific data structure that can be a list of elements "vertex"
next, when i have all the data, draw a simple image rappresenting the data..
my questions are...
there is a function like fscanf?
and then.. what's better for drawing the 2d map? i have tu use Opengl? At the end i have to draw the image pixel by pixel.. i hope there is something easier then openGL
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Jul 25, 2010
where I can find more information about how to parse a text file in Java and extracting a particular String or reg ex out of It.
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Jun 17, 2010
The question is in the title.
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Nov 23, 2010
I just inherited a project at my workplace and I am having trouble having Eclipse act as an Adroid editor rather than a Java editor. Pretty much everything is under lined and I can't seem to find a way to change how it is interpreted. I have downloaded all of the Android SDK's and the Eclipse Plugin. I can create Android projects and write the code just fine, but everything is still underlining. I must be missing something simple. Any suggestions, something I missed or didn't download?
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Mar 2, 2010
I'm writing an Android application. One problem is your app cannot contain a file whose uncompressed size is bigger than about 1Mb. I have a serialized object that I want to load that totals about 2Mb. My plan was to split this file into two smaller files, then load the object by combining both files at runtime.
However, I cannot work out how to use e.g. InputStream and ObjectInputStream to specify that I want to read the data from two input streams. How can I do this?
For example, say my object was split between file O1 and O2. How can I say "Load the object by reading the data from O1 then from O2"?
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Aug 27, 2010
I had write one application in that I am reading a image and sending it to the server, I am using Base64OutputStream class. I had tried it in core java and image is encoded successfully, But when I am using same logic in android then I am getting error as java.lang.VerifyError. And Logcat gives following error as............
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May 19, 2010
i have two files
App.java
Gallery.java
App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java
App.java
package gallery.display;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........
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Aug 12, 2009
If i have a apk file and want to know the package name and class hierarchy, how do i do it?
Suppose I have some sample APK file named "SampApp.apk" which contains classes inside "com.android.sampApp".
Is there any tool in Android SDK which shows the package name when APK file is passed as a parameter.
As the Class files are compressed to dex file I am not able to check the actual package name.
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Oct 27, 2010
I'm trying to read from a file while it still opened for witing.
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Oct 19, 2010
If I am going to be reading files from the SD Card, where do I put them during development? Also, when I install the app, will it include these files and put them to the SD Card?
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Sep 23, 2010
How to read a specific file from sd card. I have pushed the file in sd card through DDMS and I am trying to read it though this way but this give me exception. Can anybody tell me how to point exactly on that file? My code is this.
String path = Environment.getExternalStorageDirectory().getAbsolutePath();
FileInputStream iStream = new FileInputStream(path);
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Aug 27, 2010
I have the following error but cannot workout the problem, i am READING MP3 files and the below error seems to come as it tries to WRITE MP4 files.
CODE:.......
Error comes after calling the above and passing the first MP3 file
CODE:.....................
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Jun 18, 2010
Say I'm on cnn.com and I'm driving and want to hear the text.
Is there an application that will do this?
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Jun 27, 2010
I'm writing a simple budget app for myself, and I'm having trouble figuring out how to write to internal storage. I don't seem to be writing to the file properly and I can't find any more in depth examples than the Data Storage article on developer.android.com. Basically, I'm trying to write a test float to the MyBalance file, then read it into balance. In my actual code I use try/catch statements around the file in/out operations but I skipped them to make the code more readable.
float test = 55; float balance; byte[] buffer = null;
FileOutputStream fos = openFileOutput( "MyBalance", Context.MODE_PRIVATE );
fos.write(Float.floatToRawIntBits(balance));
fis.read(buffer); //null pointer
ByteBuffer b = ByteBuffer.wrap(buffer);
balance=b.getFloat();
That's the gist of it, anyone see what I'm doing wrong? I went ahead and converted to/from String but I still don't think the file is being created. I have an if statement that reads from it if it exists in onResume() and it isn't being run. Lemme post some of my code. Here's how I'm writing the file, (setbal is an EditText and balanceview is a TextView):
balance = Float.valueOf(setbal.getText().toString());
balanceview.setText(setbal.getText());
balstring = String.valueOf(balance);
for (int i = 0; i < balstring.length(); ++i)
try { fos.write((byte)balstring.charAt(i));
} catch (IOException e) { e.printStackTrace();
}
I check if the file exists in onResume() like so:
File file = new File("data/data/com.v1nsai.mibudget/balance.txt");
Is that where an internal file for that context would be stored?
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Nov 13, 2010
Is it possible to read the text selected by the user.. ? is the text selected by the user automatically copied to the clipboard bcoz then we can copy the text from clipboard manager? is there a way to get notified when a user has selected any text ?
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Aug 16, 2010
I do an import of the full package name / java file, and if I do a <classname>.<method>, SOMETIMES I can get it to access - other times I get a lot of can't use a static in a non static bunch of talk. I'll admit I'm new to Java, so what do I need to do? Call a class instance first, then call my methods? I'm rather confused by this, as I want to put all of my 'functions' into a FunctionsList.java file, and all of my main Activity (UI) into a MyActivity.java file.
For example:
<MyActivity.java>
import com.example.FunctionsList;
private class MyActivity extends Activity {
FunctionsList.function();
}
9/10 times I get that static/non-static error. If I put all of my functions into MyActivity.java, I have zero problems!
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Oct 5, 2010
Can anybody have any idea how to read a binary file which resides in sdcard using Streams, like Inputstream, CountingInputStream or SwappedDataInputStream?I am using these three streams to read a file which is currently in the Resouces folder, but now i want to move that file in sdcard but I cannot change these stream because I have done so much work on it and I cannot roll back my work.i am doing it this way but its giving me FileNotFoundException.
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Apr 17, 2010
Is there anything the Dalvik VM supports (in terms of bytecode) which is not used currently because the .class files don't have it?
As an example, if people would write their own Source-to-DX converter for their functional language XYZ, would they be able to implement e. g. full tail calls although the .class file does support tail calls only under certain circumstances?
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Jun 5, 2010
I am so used to windows mobile, and really like the voicecommand that reads the text messages, and email subjects in my bluetooth,I tried searching the forums, and the market place.Is there an app like this anywhere?
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Aug 26, 2010
How to code for reading a pdf file in android? i want to build an app like RepliGo reader. So, Please enlighten me to read pdf by using android sdk or ndk.
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Apr 15, 2010
I have an image on a private file.
I read the file, create the drawable, and assign it to an ImageView.
The ImageView has WRAP_CONTENT so the size is automatic.
On 320x480 screens, the image looks good
But on screens with more resolution and high density 480x800 or 480x854 (N1, droid) , when the image is for example 150x150, I see the image as 100x100.
Of course it has something to do with the density but not sure how should I resolve this.
This is my code...
if I then inspect the size of the icon, android thinks the size is 100x100, when really is 150x150.
Looks like its reducing the image by the density.
Can anybody explain this and how to avoid this.
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Jul 20, 2010
I am newly working on Android technology. I have to read Xml file in which there are html tags such as <b>() so I have to remove these tags before display on screen. If you know any way to remove these before display.
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Mar 2, 2009
I got FileNotFoundException when run this
FileInputStream fileToRead = new FileInputStream(fileName);
here fileName is a string =content://media/external/images/media/6 which is got in sdcard image selection by android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI
any solution?
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Oct 28, 2010
Is there any way to access the value (any constants) from Android.mk file to my java file.
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Oct 6, 2010
I am trying to reverse engineer an existing android app and understand how a particular UI is constructed. I've found that I can rename the apk to zip and view some of the compiled source. The res/layout directory is populated with all the xml files that define the UI, but while they do have the xml extension, they are not in XML format. Is there anyway to convert these files back to text based markup?
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Jul 23, 2010
I searched the Incredible forums and sub forums and could not find an answer to this question, though I am sure it has been asked: If I want to go from my stock 2 GB card to a new card, and I want to preserve data AND have all apps still be able to read whatever data they were reading off the card, do I just transfer the files from one card to the other? I bet the only thing I need to make sure of is that new card is formatted with the same file system as the original card, right? I know copying data from one card to the other will preserve data, but I want to make sure I have no problems with apps, either, after inserting the newer card.
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