How do I save the contents of an array to a file and then read it again later? I have a small amount of data that will need to be stored and since I have no idea where to start on using a SQLite database, I think this will work a lot better.
View 6 Replies
I am new to Java and Android. I have a flat file (pipe-delimited) stored in R.raw called word list.text. I want to open this file and quickly search for a word I pass into my procedure. I've been searching for a simple way to do this but not having much luck. Can anyone share some code on how to do this?
View 2 Replies View Relatedcan a whole 2d or 3d array be saved to a file ,,all at once or does it have to be one number at a time? if so what do i have to look up?
View 2 Replies View RelatedI'm using the following code to encrypt a String (inText) whose output is a byte array named cipherText;
Code:
byte[] cipherText;
cipherText=cipher.doFinal(inText.getBytes());
The cipherText is printed in a textbox as follows:
Code:
encText.setText(new String(cipherText));
Everything works fine until here. However, in the decryption section, I need to get the contents of the textbox as a byte array again. For this purpose, I use the following code:
Code:
byte[] cText;
cText=encText.getText().toString().getBytes();
When I try to do the encryption it gives a 'bad size' error. I found out that the lenghts of the two byte arrays cipherText and cText aren't equal:
Code:
decText.setText(Integer.toString(cText.length));
encText.setText(Integer.toString(cipherText.length));
boolean res=Arrays.equals(cText, cipherText);
result.setText(Boolean.toString(res));
The 'result' textbox always prints 'false' meaning that the two byte arrays cipherText and cText aren't equal. However I convert cipherText to a String to print in a textbox and then read the contents of that textbox, convert to String back and then to Byte Aray again. Obviously some data is lost during these conversions.
I'm new to android and I'm trying to figure out how to get the contents of a URL as a String. For example if my URL is http://www.google.com/ I want to get the HTML for the page as a String. Could anyone help me with this?
View 1 Replies View RelatedI want to save an ArrayList so that it is persistent. The contents can change. What is the best way of approaching this in android?
View 2 Replies View RelatedI have 2 dimensions array like this: public myArrayType[][] mObjArray; I want to save it in the onSaveInstanceState method, since my array contains lot of elements I don't want to save element by element but the whole array object, what is the best way?
View 4 Replies View RelatedI have been trying out new ROM's and it's been fun. Here is my biggest headache with doing this. I have about 10 contacts that are Direct Dial (speed dial to the rest of the world). What I do is put them in a folder as a shortcut to prevent accidental dialing. But I have to constantly redo this set up. Is there a way to save a folder and it's contents, such as direct dial numbers, to my sd card and bring it back with each new ROM or launcher? Starred folder doesn't work for me as it's more clicking when I am driving. The app Direct Dial still takes several clicks.
View 1 Replies View RelatedI have created a app that displays all the content from res/raw folder. I need that when I click on .doc file it should open and I can view its content. I have ThinkFree.
Enter code here:
public class FileList extends ListActivity {
public static final Field[] fields = R.raw.class.getFields();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setListAdapter(new ArrayAdapter<Field>(this, R.layout.row, R.id.weekofday, fields));
} @Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
//super.onListItemClick(l, v, position, id);
String selection = l.getItemAtPosition(position).toString();
Toast.makeText(this, selection, Toast.LENGTH_SHORT).show();
Intent i = new Intent();
i.setAction(android.content.Intent.ACTION_VIEW);
startActivity(i);
} }
Am an engg student from India and of course a novice to android. am developing an application for remote administration through mobiles. so i have to display file contents of a remote machine in mobile. as android doesn't support WML,can u suggest me a way to display ..
View 2 Replies View RelatedI am just trying to display a list from an array that I have in my arrays.xml. When I try to run it in the emulator, I get a force close message. If I define the array in the java file (String[] testArray = "one","two","three","etc";) it works, but when I use "String[] testArray = getResources().getStringArray (R.array.testArray); " it doesnt work.Here is my Java file:package com.xtensivearts.episode.seven;
import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;public class Episode7 extends ListActivity { String[] testArray = getResources().getStringArray(R.array.testArray); /** Called when the activity is first created. */
We have ported android to our hardware. I am facing some issues related to sdcard. Here is the test scenario and issues:
First issue :
1. On hardware, insert the card and copy a file to sdcard using dd command.
2. Remove the card from hardware.
3. Do ls /sdcard. It shows the file present in sdcard. It seems unmount of sdcard device is not happening.
Second issue:
1. Copy a file to sdcard using dd command.
2. Remove the sdcard and check the content of the sdcard from PC. File is not visible.
3. Copy file to sdcard again and then check the content of sdcard from PC. File size is zero bytes.
4. Restart the hardware and copy the file again. File is visible when checked from PC.
Third issue:
1. The content of copied file are not matching with the original source file.
i have a huawei ideos x5 pro. Huawei releases upgrades for my phone in the form of update.app files. how to extract the contents of these files? I would like to get the system apps like camera, bluetooth etc.. but i cant seem to extract the update.app file..
View 1 Replies View RelatedIs there a way to read the points created when drawing a path? It seems silly to me that a path cannot be readable.Or is it just better to manually write the current finger position to an array?
View 1 Replies View RelatedI have a class that extends View. I override the onDraw method and allow the user to draw on the screen. I am at the point where I want to save this view as an image. I Can use buildDrawingCache and getDrawingCache to create a bitmap that I can write to the SD card. However, the image is not good quality at a large size, it has jagged edges. Since I have a View and I use Paths I can transform all by drawing to a bigger size. I just don't know how to make the Canvas bigger so when I call getDrawingCache it doesn't crop all the paths I am just transformed. What is happening is I transform all my paths but when I write the Bitmap to file I am only getting the "viewport" of the actual screen size. I want something much bigger.
View 1 Replies View RelatedI am a S4 new user coming from iPhone 5, on iPhone I can edit pictures/splash screen for the installed apps by just browsing to the installation dir for the app and edit whats inside..
my question is now I am rooted, is the APK file contents get extracted somewhere in the phone or it stays as it is? and If yes where is the location?
File Manager with Tree and Contents.. What File Manager has Folder Tree on the Left Side and the Contents on the Right Side? Sort of like Windows Explorer.
View 1 Replies View RelatedI have a text file that I am pulling from my SD card which contains an array in plain text format. Here are the contents of that file ...
http://www.oddree.com/rayhaque/android1.jpg,http://www.oddree.com/rayhaque/android2.jpg,http://www.oddree.com/rayhaque/android3.jpg,http://www.oddree.com/rayhaque/android4.jpg,http://www.oddree.com/rayhaque/android5.jpg
I am trying to import that text file into a String, convert that String to an array, and then load that array into a list adapter. If I try to split up readString or a trimmed result of readString, I get a forced close every time. If I copy the contents of the file into a String and then use that ... everything works as expected. So what is the difference between loading this stuff from a text file, and loading it from an included string? Is it a byte conversion issue? Code...
Is is possible to specify data in xml resource file and initialize ArrayList from it? I am looking for a way to use the ArrayList with a SimpleAdapter to bind to a ListView. I am wondering if there is a way to specify my data in xml resource file and init ArrayList from it.
View 6 Replies View RelatedI 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?
View 2 Replies View RelatedIs there a way to convert JSON Array to normal Java Array for android ListView data binding?
View 2 Replies View RelatedI have Picture data in byte rgb_565 array, and I want convert it in a productive way into argb array. Right now I have found only one (little slow) way to do this: Bitmap mPhotoPicture = BitmapFactory.decodeByteArray(imageData, 0 , imageData.length);
where imageData is my byte[] array in rgb_565, and then: int pixels[] = new int[CameraView.PICTURE_HEIGHT*CameraView.PICTURE_WIDTH]; mPhotoPicture.getPixels(pixels, 0,PICTURE_WIDTH, 0, 0, PICTURE_WIDTH, PICTURE_HEIGHT);
The point is I believe creating a Bitmap object is exacting and not necessary in this case. Is there any other faster way to convert rgb_565 array into argb array? I need this because making image processing on rgb_565 array seems to be a little annoying. Or maybe it is not so hard?
I am trying to make an application that would be able to send the user's voice over the network using RTP. I am using the ported stack from hsc (JLIBRTP) and I am able to record user's voice in a saperate thread. the problem is that jlibrtp uses has a class named RTPSession that is responsible for the session and has the sendData method that takes a byte [] as argument and the AudioFormat class I am using to record user's voice is in AudioFormat.ENCODING_PCM_16BIT wich is short. I have tried using 8bit audioformat but I get an illigalargument exception in my htc magic and in my emulator. So is there any way I can convert the short [] to byte [] ? would that be acceptable in order of voice quality?, is the above error a known bug for htc magic or the platform doesn't support 8bit audio format?
View 3 Replies View RelatedOld phone messed up trying to switch contacts to new Android phone. Old phone is unfortunately not usable. I backed up contacts on old phone and have them in a .pbf (not .pdf) stored on my PC, but I can't open the file to read it. How do I open up a .pbf file? I've searched and can't find a program to open it.
View 1 Replies View RelatedI want to read csv file from res. Can some one tell me how can i read it ?
View 3 Replies View RelatedI'm new to android developing but right now I'm working on an application that displays Random Facts. Since I don't want it to be in a random order, I would like to have them in a list. I would like to order through them one by one and show them using TextView.
Resources res = getResources();
myString = res.getStringArray(R.array.FactsArray);
That's what I have so far. If I'm right, that just establishes the array so I can be able to use it later. What I had before was rgenerator which chose a random string from the array and displayed it when I clicked a button.
CODE:................
But Like I said, I would like to just order through them one by one when a button is clicked.
Is there a simple way to convert a JsonArray to a standard Java Array? Obviously, you can iterate and do it explicitly, but I wanted to see if there was a direct way to do so.
View 2 Replies View RelatedI am new to android and I want to read a binary file extension .AMF file.I really need your help this is really urgent.
View 1 Replies View RelatedI need to explore for my project use of web services on Android. I know that there is no official library for XML - RPC web service.
But there is for REST XML and i need to test it.
I would like to read XML on my web page (Where i have to pass username and Password) from Android with HTTP GET. OR Suppose, i follow This link, then where do i pass username and password?
I have the file in sdcard: sample.xml I want to read it, so I dont know some code to connect to sdcard in android.
View 6 Replies View Related