Android :: 2 Dimensional Array Not Initializing Correctly
Feb 17, 2010I've gotten headaches from this too.
Usually a double loop works fine for me:
CODE:....................
I've gotten headaches from this too.
Usually a double loop works fine for me:
CODE:....................
How can I assign value to a 2-dimensional array?
My array is:
String[][] arr=new String[2][3];
And when I am assigning value to this array, application is stopped.
Example: arr[0][0]="hello";
I need to pass a 2 dimensional array to an ACTIVITY from a SERVICE. How can I achieve this in minimum number of statements (as in avoiding putExtras for each and every string stored in the array)?
View 4 Replies View RelatedHere is my Problem :
I want to pass multi dimensional String array between two activities or pages.
I already tried with bundle.putextra like methods. But those allow only one dimensional string array.
I really hope you can help me with example java code on this . Here is my String array, final String[][] arr2={{"1","pavan"},{"2","kumar"}, {"3","kora"}};
I am stuck with a problem creating buttons dynamically in android. This is what i want to do-
I want to create 8 x 10 array of buttons. Since declaring 80 buttons in main.xml isn't efficient, I want to do this in the program itself. The biggest problem is placing/aligning the buttons like a grid. I can create button objects but how do I align them in the program?
Button b = new Button(this);
b.setId(i);
b.setText("Button " + i);
Like this-
1 1 1 1 1 1 1 1 1 1
2 2 2 2 2 2 2 2 2 2
.
.
.
10 10 10 10 10 10 10 10 10 10
Is 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 RelatedIs there any way I can load a URL without actually having the user see the web page? I'm trying to make a game with a hi score table, and loading the hi score URL in the browser would reveal the mechanism and allow the hi scores to be easily hacked. I have a php file on my server that my application is supposed to load to submit the hi score.
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 have an application that is driven by a configuration XML: various app properties are loaded at the app start-time by parsing the XML and initializing static variables of some class. The data read from this XML drives different Activities of the application. Presently, I have called the "parsing and the properties-initialization" from the onCreate() of my Main Activity. I have a few questions as regards this case/approach: Should I invoke the app initialization method from the Application Object or is the current approach correct?
What advantages/disadvantages do/would we get/have if I choose to invoke it from the Application object? Do we really need a static class to store app properties? Or can we have all the properties as a static Collection variable in the application object? Parsing a XML(~200 nodes) at app load time might take some time (not sure how long tho); How can I avoid the dreaded ANRs? I am using a Pull Parser.
In my android application i need to insert an array into an array and access its values. Is there any way that i can get this done.
View 3 Replies View RelatedI am implementing a ListView by changing the selected item's background in OnItemClick. However, I am not able to "initialize" an item in the app's OnCreate. (I tried using <ListView>.getChildAt(0).setBackgroundColor, but inside of OnCreate, getChildAt(0) returns null.)
How do I "initialize" items in a ListView?
So I had some sort of crash on my HTC Sensation where the phone rebooted, and all my whatsapp messages were gone. Whatsapp automatically backs up your messages every 24 hours, so I reinstalled to enable the backup.
1. After installation, when inputting information (after restoring your messages) and getting into profile info, I am stuck on an "Initializing: Please wait a moment..." box
2. This goes on forever
3. I have force closed, cleared cash, cleared data and tried again with no luck
4. I have uninstalled and reinstalled (and reboot the phone) with no luck
5. I have uninstalled and installed the latest version from the whatsapp website (which has a different file size than the play store one) with no luck
6. I have redone this WITHOUT recovering my messages with no luck (even deleting the back up messages folder)
7. I can actually receive notifications from whatsapp, showing messages from groups / people, though clicking it takes me back to "Initializing"
8. Sometimes I get an "android.process.acore is not responding. Would you like to tell HTC?". This may be a separate issue as it still continues to "Initialize" no matter what I press
I can see 28 messages from notifications, some which are very important and urgent. I am using an unrooted HTC Sensation with ICS
while trying to sync the repo or downloading the sources i get the following error:
curl: (22) The requested URL returned error: 404 Not Found Server does not provide clone.bundle; ignoring.
But the process continues and a few minutes later i get the same error.
My device is Chinese and has no brand. (with Android 4.0)
I changed some things in framework-res.apk, but not set the permission to 755 before saving in /system/framework/ so now the phone keeps resetting!
How do I change the permission of this file without the device to start??
I just want to read <string-array> resource elements into a String array. I don't want to make a view or anything and mess with adapters - just want to transfer the elements. Is there a built in class for this? Or do I need to treat the resource file as a regular file?
View 3 Replies View RelatedI have defined a string array in the resource and access it using:
String arrStrings[] = getResources().getStringArray(R.array.arrayname);
But, how can I get the size of this array?
I have a collection of strings and declared the strings individually as arrays using ArrayList<String> al=new ArrayList<String>(); and called the arrays in the program by using al=getIntent().getStringArrayListExtra("titles");
Now, instead of declaring each of the arrays i have created SongsArray.java like below...
public class SongsArray {
private String title;
private String movieName;
private String singerName;
private String imagePath;
private String mediaPath;
public String gettitle()
{
return title;
}
public void settitle(String title) {.................
My question is this: i was looking at the "Hello world view: gridview" example and was wondering, how do i load all my images dynamically. for example in the ImageAdapter.java file, at the end there is:
CODE:..........
But what if i dont know the images name (as the user will add new images). what i would like to do is grab the image name from an xml file and then load it into an array.
In my application I need to react on APN changes (including going back and forth between WiFi and GSM connections) and change proxy settings in case it needs to be taken into account to connect with the network. I'm listening for ConnectivityManager.CONNECTIVITY_ACTION broadcasts to check for APN changes which contains 'reason' extra among others. Unfortunately the 'reason' for APN change is not documented, maybe it should not be used? I was using (with limited success) reason:apnChanged and reason:apnSetupComplete as indicators of APN change being done but that does not work well with going back and forth between WiFi and mobile connection. What is the correct way of listening for changes of current network APN/Interface?
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View 8 Replies View RelatedI have a string-array in my resource file that has a little over 1,000 items in it. When I go to launch the activity that calls an AutoCompleteTextView the app won't load this array it simply backs out of that activity and returns to the previous activity. If I delete a bunch of items in the array it begins to work. How can I make it hold all my items? Is there a max size associated with this?
View 3 Replies View RelatedMy background is in C, but I'm relatively new to Java and to Android. I have a question as to whether I'm implementing code in the best way:
As a learning exercise in Java and in meeting the Model-View- Controller pattern, I wrote a simple game. It plays out on a 2D grid owned by the game class, and is drawn to the display by an extended View class. I have it working, but I'm wondering after the fact if I'm going about it the right way.
Here's a simplified version of what I have:
CODE:.................
I've looked around for how to use an ampersand ( '&' ) in an item for a string-array but can't seem to find it. I feel silly for having to ask for something this simple, but does anyone know how to escape it?
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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. */
I 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?
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View 4 Replies View Relatedi get NullPointerException at the start of the for where am i going wrong?
public void checkzone(Location loc)
{
X = new List<float[]>() {
};
Y = new List<float[]>() {
};
X.clear();
Y.clear();
float x = (float) loc.getLatitude();
float y = (float) loc.getLongitude();
float A1X[] = {(float) 41.992853, (float) 41.994815, (float) 41.995158, (float) 41.993065};//DOMA..........................