Android :: 8 X 10 2-dimensional Array Of Buttons In Android
Mar 23, 2010
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
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Oct 27, 2010
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";
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Apr 1, 2009
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)?
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Feb 17, 2010
I've gotten headaches from this too.
Usually a double loop works fine for me:
CODE:....................
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Nov 30, 2009
Here 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"}};
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Apr 21, 2009
I have an application that will have 5-15 buttons depending on what is available from a backend. How do I define the proper GridView layout files to include an array of buttons that will each have different text and other attributes? Each button will essentially add an item to a cart, so the onClick code will be the same except for the item it adds to the cart.
How can I define an array so I can add a variable number of buttons, but still reference each of them by a unique ID? I've seen examples of the arrays.xml, but they have created an array of strings that are pre-set. I need a way to create an object and not have the text defined in the layout or arrays xml file.
Update - Added info about adding to a GridView
I want to add this to a GridView, so calling the addView method results in an UnsupportedOperationException. I can do the following:
CODE:.........
But that doesn't layout the buttons in a grid like I would like. Can this be done in a GridView?
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Nov 21, 2010
I am writing an Android Application which outputs some array of buttons dynamically.
My question is how to implement onClickListener() functionality for Array Of Buttons. I mean how to recognize the button that is clicked in public void onClick() method ? I need to display a toast based on the button that is clicked.
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May 1, 2009
I want to populate my UI with dynamic buttons at runtime. I am trying to invoke a feed from the net and based on the results (which are URLs pointing to image resources), i need to create buttons on the layout with their background set as images retrieved from URLs. I have an array of buttons which get instantiated based on the number of results returned. I was wondering whats the best way to do it - as writing them on the main.xml is not feasible.
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Aug 3, 2010
Is there a way to convert JSON Array to normal Java Array for android ListView data binding?
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Jan 12, 2010
I 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?
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Feb 16, 2010
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?
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Oct 12, 2010
I'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.
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Jul 27, 2010
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.
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Sep 13, 2010
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.
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Mar 31, 2009
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?
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Jul 29, 2009
I am not able to find out the perfect layout(viewgroup) to place four buttons as shown in the attached image. Basically, i want to place four buttons near the top/left/bottom/right edge of the screen. AbsoluteLayout helped, but it is deprecated (It is also better to avoid AbsoluteLayout as it is not very flexible for orientation changes)
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Jan 6, 2010
I have touched on this question here, where Christopher gave an answer to this, but I dont really get it so I thought its time to make it a real question, not just a "follow up" =)
As it stands, the application Im writing has 4 different screens:
1. Screen 1 - list of nodes (main screen)
2. Screen 2 - options menu, tableLayout with buttons
3. Screen 3 - navigation
4. Screen 4 - text details on version etc
These screens can be navigated to/from using a "header" View that is placed on top. the header then has 4 different buttons:
+--------------------+
| menu with buttons |
+--------------------+
| |
| |
| |
| C O N T E N T |
| |
| |
| |
+--------------------+
The header is just an XML-file (header.xml) with a few buttons. That header.xml is the included in the Layouts using the include-markup. For example, the main.xml has the line:
<include layout="@layout/header"></include>
The header show up alright, but the question is - what is the correct approach to attach OnClickListeners for the buttons in the header?
Christopher pointed out that you could create an Activity class and do the hooks there, like this:
CODE:............
First, I cant make it work since the method setupHeaderButtons isnt accessible from FirstActivity.
Secondly, is this the right way to go at it?
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Aug 13, 2010
I 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?
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Apr 16, 2010
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) {.................
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Dec 29, 2009
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.
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Mar 31, 2010
I have an array of 5 Timer objects in my app, some of wich have been scheduled with a TimerTask. I need to be able to store and load these 5 Timers; is there a way to save Objects? Maybe storing the address of the array would be enough? How could I do that?
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May 12, 2010
I 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?
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Apr 8, 2010
My 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:.................
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Sep 16, 2010
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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Mar 16, 2010
I 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. */
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Sep 18, 2010
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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Nov 17, 2010
I am trying to use an array of images then set my ImageView to one of the images in the array. My first instinct was to use an array of strings with the image names but this did not work. How do I do this.Make a drawable array with the image names without quotes or what?
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Jul 28, 2010
i 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..........................
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Oct 5, 2010
I created a weather widget. I store its configuration in sharedpreferences. The widget is updated by a service. I keep the weather information together with forecasts in an array. After the phone is off for the night i find that the array values are gone, maybe the system suspended? the service. Is there a way to store the array in sharepreferences so it is more sticky.
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Sep 5, 2010
This is a part of my code...
i want to replace the "" in the title_t.setText("") by a thing that can work.
I just want to take the title from the listview which come from a resource..
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