Android :: Dynamic Resource Loading

Sep 5, 2010

I'm trying to find a way to open resources which name is determined at runtime only. Let me explain in more details. I want to have a XML that references a bunch of other XML files in the application apk. for the purpose of explaining lets say the main XML is main.xml and the other XML are file1.xml file2.xml...fileX.xml...

what i want is to read main.xml, extract the name of the xml I want (fileX.xml) for example. and then read fileX.XML. the problem I face is that what I extract form main.xml is a string and I can't find a way to change that to R.raw.nameOfTheFile

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Dynamic ListView - Loading Contents

May 29, 2014

I am developing an application. In that application i have 2 list view (a and b ), i need to load the content of the list view (b) according with the selected value of first list view(a).How its possible.

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Android :: Dynamic Loading Of Complete Layout File

Jul 1, 2010

I'm dealing with a problem you guys might not have faced earlier. I'm having a use-case in my Android application where the actual screen that I want to show to user is not stored in any layout file of my application. The layout of the of the screen is designed by server in this case, based on selection made by user on first screen.

Let me elaborate here,
1st Screen : List of check box with different biller names. (Imagine I've selected 2 billers from this screen)
2nd Screen : (The screen that server has decided how it should look like)
* Header,
* 1st Biller name (Label)
* Amount for 1st Biller TextBox
* Image (a Separator image)
* 2st Biller name (Label)
* Amount for 2st Biller TextBox.
* Here there can be a checbox/radio/another TextBox anything.
* Image (a Separator image)
* Button (to submit above form back to server)

I hope makes some sense in what I'm planning to design. The current issues I'm dealing with are as below.
1). How to draw this dynamic widgets?
2). How to fetch user Inputs from this dynamically created widgets?

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Android :: Dynamic Class Loading To Target Multiple Versions

Aug 20, 2010

I would like to make a single Android app for multiple Android versions (possibly every one of them)
My problem is that I want to check what is the version of Android the app is currently running on, and dynamically load a class which is version dependent. This part should be ok.

I just wonder how I can achieve that without compilation errors in my Eclipse project. I mean, the project is configured for a particular target (1.5, 2.1 ...), so if a class in my project is not compatible wich the selected target, it will result in errors.

Is there a way to export this classes even if they are not fit for the platform (I thought about a separated lib, but then again : how to compile theses classes into a lib without compilation pbs?) ? This should be ok since they won't be loaded until I ask them to after having checked Android version.

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Android :: Loading A Resource To A Mutable Bitmap

Sep 11, 2010

I am loading a bitmap from a resource like so:

Bitmap mBackground = BitmapFactory.decodeResource(res,R.drawable.image);

What I want to do is make some changes to the bitmap before It gets drawn to the main canvas in my draw method (As it would seem wasteful to repeat lots of drawing in my main loop when it isn't going to change). I am making the changes to the bitmap with the following:

Canvas c = new Canvas(mBackground);
c.drawARGB(...); // etc

So naturally I get an exception

java.lang.IllegalStateException: Immutable bitmap passed to Canvas constructor

So to avoid that I made a copy of the bitmap so that it is mutable

Bitmap mBackground = BitmapFactory.decodeResource(res,R.drawable.image).copy(Bitmap.Config.ARGB_8888, true);

Which avoid the problem however it sometimes causes OutOfMemoryExceptions, do know any better ways of achieving what I want?

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Android :: Loading & Displaying Image From A Resource

Apr 29, 2010

Currently I'm successfully loading and displaying an image from a webserver using the code below.

URL imgURL = new URL("http://www.xxx.com/myimage.png"); URLConnection conn = aURL.openConnection(); conn.connect(); InputStream is = conn.getInputStream(); BufferedInputStream bis = new BufferedInputStream(is); bm= BitmapFactory.decodeStream(bis); bis.close(); is.close();

canvas.drawBitmap(bm, 0, 0, null);

What I want to do is load it from a resource. I've put myimage.png into res/drawable and referenced the bitmap as follows :-

Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.myimage);

However when I try to display it with canvas.drawBitmap(bm, 0, 0, null); I get a Force Close. What am I missing?

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Android :: Loading Resource Represented By R.attr.*

Nov 6, 2010

I want to load resource that is located in android.R.attr class.Next code failed to load resource with Resources$NotFoundException exception:

getResources().getString(android.R.attr.action); //action is a string resource

Also tried to load resource using:

getResources().obtainAttributes(android.R.attr.action)

No exception is thrown, but returned TypedArray array has nothing valuable inside it. At least I couldn't find anything that is connected to actual resource id or resource I'm interested in.So, how to load resources represented by android.R.attr.* ids?

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Android :: Loading Raw Resource Text File / Out Of Memory Error

Sep 15, 2010

I use this method couples of occasion to load text file to display as help file. But I don't know why the following code didn't work. It seems to hang and logcat says "OutOfMemoryError"? All I did was break this out as an separate activity.

---xml---
<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/helptab"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:id="@+id/helptext"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</ScrollView>

---code---
import java.io.DataInputStream;
import java.io.IOException; import java.io.InputStream;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class Help extends Activity {
/** Called when the activity is first created. */
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.help);
InputStream iFile = getResources().openRawResource(R.raw.help);
try { TextView helpText = (TextView) findViewById(R.id.helptext);
String strFile = inputStreamToString(iFile);
helpText.setText(strFile);
} catch (Exception e) {
} }
public String inputStreamToString(InputStream is) throws IOException {
StringBuffer sBuffer = new StringBuffer();
DataInputStream dataIO = new DataInputStream(is);
String strLine = "";
while ((strLine = dataIO.readLine()) != "") {
sBuffer.append(strLine + " ");
} dataIO.close();
is.close();
return sBuffer.toString();
}

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Android :: Will Threaded Resource Loading Improve Throughput - Or Just Responsiveness

Oct 13, 2010

Are there any Android phones that are multi-processor (multi-core/ cpu), where application threads execute concurrently on different processors?

There doesn't seem to be any explicit way of doing asynchronous file I/ O or asynchronous resource loading. So, suppose I put BitmapFactory.decodeResource() or Resources.openRawResource() into a separate thread. Will those methods play nice with the other threads, yielding during blocking I/O operations so those other threads can run?

If those methods rely on the thread scheduler to forcibly suspend them, then the separate resource-loading thread isn't going to help me get my application started any faster (although it will help it to be more responsive to user input).

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Android :: How To Use Resource Within A Custom Xml Resource File?

Aug 3, 2010

I have an XML resource file:
<resources> <section>
<category value="1" resourceId="@xml/categoryData1" />
<category value="2" resourceId="@xml/categoryData2" />
<category value="3" resourceId="@xml/categoryData3" />
</section> </resources>
Using XmlPullParser, on the START_TAG, I can use:
int value = parser.getAttributeIntValue(null, "value", 0);
to get values 1, 2, 3...however:
int resourceId = parser.getAttributeIntValue(null, "resourceId", 0);
doesn't work...it just yields the default value 0, or whatever I change the default value (3rd parameter) to be. Does anyone know what I am doing wrong or if this is possible?

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Android :: Displaying A Now Loading Image While Applic - Loading

May 4, 2009

I want to display a fancy 'loading' image at my app's startup time.

The problem: my startup code is mostly GUI related, hence needs to run on UI thread.

Is there a way to do both - that is run UI-related code on UI thread while an image is displayed to the user?

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Android :: Loading Activity Darkens Screen - Loading Screen

Nov 2, 2009

I've looked through the documentation and I can't seem to figure out how to have the screen blured/greyed when I select an activity that may take a while to load.

This seems to be an Android standard (both the Camera app and the Camcorder app do it when first selected), but I don't see any documentation on it. I even tried looking through the source of these apps on git, but couldn't seem to find it.

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Survey About Dynamic UI

Jun 5, 2012

I am conducting a study about android dynamic UI. Dynamic UI means the GUI components and their listeners are created/registered dynamically. For example, one may register/remove an event listener for a GUI component in the event handler of another GUI component. I would like to know whether such cases are common in real development. And it would be better if you can tell me how many android apps you have developed.

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Android : Need Dynamic Classes App

May 18, 2009

I am writing a app, which has sort of plugin framework. public abstract class AbstractService {public abstract AbstractService getInstance(String name)..

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Dynamic Spinner With Database

Oct 11, 2013

I am trying to have a layout with 4 spinners that dynamically change with each previous selection in a spinner.Whenever I try and open my app, the app crashes and will never open.

Here is a copy of my LogCat.10-10 14:39:41.652: E/AndroidRuntime(1917): FATAL EXCEPTION: main
10-10 14:39:41.652: E/AndroidRuntime(1917): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.productguide/com.example.productguide.PowersportsEquivalent}: java.lang.NullPointerException
[code]....

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Dynamic Text Wrap?

May 29, 2014

In my application i am dynamically creating a table layout. In each row of the table layout have 3 text views. but the auto wrap of the text is not working on these text views in multiple screen resolutions.

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Android :: Persistance Of Dynamic Objects

Aug 7, 2009

I am new to this android stuff and SQLlite etc.I am going to log some numbers at a certain interval, and will put them into a dynamic histogram, by dynamic i mean that there will be a maximum number of samples in the histogram, the histogram and age stuff should be persisted either in db or plain file.For simplicity, I would like the samples to be stored in a blob type datafield, but i cannot se if this is possible. Alternative i could have another table with the samples Or I could simply have files with filename = name and content = samples.my concern might be unclear by now, but put simply, what is most effecient regarding power usage?

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Android :: Dynamic Widget Size

May 18, 2009

I define once in my /xml/widget.xml the minwidth. but what can i do when I need to inflate different sizes from my widget layouts for 1 one my 3 widgets thats fine, but the last 2 widgets would just need one icon size, so they always need the width of 2 icons. also when I make minwidth smaller.. it fits with the other 2 widgets but the large widget come cutted.How to solve that. I cant believe to create a total new receiver and a new /xml/widget2.xml just for another size?!

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Android :: TextView Dynamic Size

Jan 22, 2010

I want to create a TextView that will stretch the width of the screen and use a textsize that will keep the text on one line and fill the width. So bigger words would be smaller fontsize and smaller words would be bigger font size. I tried digging around in the docs under TextView but could not find what I needed.

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Android :: ArrayAdapter Of Dynamic Size

Oct 19, 2010

I need a gallery to be able to hold up to thirty custom views. These views need to added or removed whenever, they also need to be able to be display in a display bow beneath the gallery. How do I do this?I looked at the doc file for arrayadapter but it requires me to use a reference Id for each view I add, but each view is all java coded. Should I just use setId upon creation of the view and just throw that id into the array adapter, or is there a way to create one without using resource id's?

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Android :: Dynamic View High

Oct 27, 2010

I'm trying make a View that divide the screen in three sections. The first section should be 200dip high, the third section should be 50 dip high and the middle section should take the remaining place in the middle. Is there any way to implement it? I tried some ways but either it doesn't work or the app crashed.

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Android :: Dynamic Pin Overlays In MapView

Oct 29, 2009

I've been reading the (shoddy) documentation for the Google Maps API (MapActivity et al), and I think I have roughly worked out how it works. It seems that if you want to add a marker overlay you can use ItemizedOverlay easily, but you have to add all your markers at once. There doesn't seem to be any way to remove them.

What I want to do is query markers from an online database as the user pans around (in the same way the actual map tiles are fetched). Is there a simple way to do this?

As far as I can tell I need to subclass Overlay and implement the draw method, but where is the best place to put the code that fetches new markers when the map is panned? There doesn't seem to be an onMapChanged() method anywhere. My best guess is MapController.onKey() but that seems wrong.

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Android :: How To Find Dynamic IP From Device?

Jul 28, 2010

I have method to find the DHCP address and host address.how to find the dynamic ip address assigned to my device.I am able get the address.how to get this IP in device?

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Android :: Dynamic Content Of ListPreference

May 28, 2010

I want to put a ListPreference in my preference screen. But all the examples I have found in Internet the content are loaded out of a xml and I need that de options in the ListPreference are dynamic and not previously defined (in a xml).

I have mi preferences.xml in the folder xml/ of my project;
this is the code of preferences.xml:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android

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Android :: Dynamic Buttons Onclick

Sep 7, 2010

I have some dynamic buttons that are being generated inside a for loop. for (int i = 0; i < 5 ; i++) {> Button aUIXButton = new Button (SecondPage.this);

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Android :: ListView And Dynamic Row Sizes

Mar 18, 2010

I'd like to use different row descriptors (from the XML layout resource) in one ListView. Can I and how? Also, I'd like to be able to programmatically change the size of the rows, based on the data in each row, in a ListView. Can I and how?

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Android :: Create Dynamic Graph

Jul 21, 2010

i have to create a dynamic graph in android.

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Android :: Layout With Dynamic Position

Sep 10, 2010

I have a layout which might be a bit unusual.

The structure is the following:

CODE:..............

My customRelativeLayout at the bottom of the XML has a XML layout too:

CODE:.............

My CustomRelativeLayout:

CODE:.....................

What I want to do: I want to be able to change the position of my CustomRelativeLayout. It should be follow my touch. Its smaller than the SurfaceView and should "slide" above following my touch...

There are two problems:

The onTouchListener bind to mLinearLayout (in CustomRelativeLayout) is only triggered once and only for ACTION_DOWN. I see the log output only once The note never changes the position, it is never redrawn with the changed matrix... I see the output stated in onDraw never after the touch happened.

First might be because the SurfaceView also handles touch events. But I thought if the CustomRelativeLayout handles it first, it should work.

Thanks to Xil3 I was able to remove the wall I was run into...

Here is my solution:

My note xml:

CODE:.................

And here is my constructor:

CODE:..................

I also found a bug/feature/issue, which is absolutely new for me: When I remove the background in my note root element (which is currently transparent) the note is only visible within the 200dp width/height I have set in the inner LinearLayout. So its not fill_parent, its wrap_content even as I set it to fill_parent. So layout_width and layout_height only use the given fill_parent when a background is set...

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Android :: Possible To Make A Contentview Dynamic?

Nov 18, 2010

Is it possible to create just one class and use a variable for contentview? I am thinking of creating a main layout with loads of buttons with IDs. Once a button is pressed it'll then pass the ID to the class and use that ID to open a specific Layout. One class, multiple layouts. code...

is it possible to make 'main' a variable?

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Android : How To Create Dynamic Tables?

Sep 4, 2010

Does anyone of you know how to create dynamic Tablelayouts? On my Emulator Android just shows nothing.

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Android : How To Draw Dynamic Markers On A Map?

Jul 26, 2010

How would dynamically draw markers on a Mapview? I've got the following code which will hardcode one point in. I'm looking to pull values from a database..

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Android : How Can I Access Dynamic TextView?

Jun 9, 2010

I have created a table with 2 rows in it. Each row has 5 TextViews with a default text of 0. There is also a button outside of the table. I am trying to figure out how to update each of the TextViews in each row on each successive press of the button. So on the first press of the button the first TextView in the first row should update to 1. On the second press of the button the second TextView in the first row should update to 2...etc. I can't figure out how to do this programmatically without having to code it all - is it possible? Basically I guess I need to build up the ID of the TextView dynamically. So if the TextViews have ids as item1, item2, item3 etc. Then I need to build up the findViewById(R.id.item + i); Obviously this is not possible but is there a way to do this?

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Android : Way To Load Dynamic Class?

Nov 2, 2010

Is it possible to dynamically load classes from a URL into your application in the same way as a desktop application can? For example, can you do a simple boot-strap application which you install onto the device, that boots up loads the main jars required for the applications from a server, or from a local jar on the SD for example?

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Android : How Can Create Dynamic Views?

May 19, 2009

I am creating one quiz application, for question page i have created one view by using Linear layout in that i have added four TextAreas, first TextArea for question and reaming three are for answer cell. so now, when user select the answer cell i want to show next question screen for that i am thinking of creating new view. means some questions may have two answers so i want to create that at run time. how to create new view at run time ? and how to switch for new view.

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Android : How Can Create Dynamic Controls?

Jan 23, 2010

I am trying to create a screen with some dynamic controls, well radio buttons to be precise purely for learning purposes. I have managed to add the radio button by referencing the radio group in the main.xml file.

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Android : How To Specify A Dynamic Height For An ImageView?

May 25, 2010

I would like the ImageView's height to dynamically increase depending on the max height of the screen. I'm aligning the layout containing the buttons along the bottom of edge of the screen, and I would like the rest of the screen taken up by the above ImageView. Also, since the ImageView contains a centered image, I would also like to set min height, and a scrollbar if the screen is too small to display the imageview and the buttons below.

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Android : How To Add A Dynamic Library To Droid?

Jun 12, 2010

I want to add a non-native shared library to Android so every application on the device would be able to use it. I mean using packaged classes just like a core library as if they were present in the application itself. I studied Android source code to figure out a way to add a new path to the application ClassLoader and found out that it is created during startup and there's no way to change the paths later. I can use my own ClassLoader, but all I will get after loading a class will be a reference to a Class object. This way I will be bound to work through reflection mechanism, which is slower than the native execution system Is there any way to organise a shared library on Android?

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General :: Dynamic Custom Recovery

Apr 20, 2014

Is there a way to dynamically load/use a custom recovery on an Andoid phone (generally, any phone) without actually having to overwrite the phone's stock recovery? For example, by booting to stock recovery, flashing a zip file that will start up CWM/TWRP so you can use it temporarily, but stock recovery is still there and when you reboot the phone it will still be there? Sort of like using a Linux live cd.

I'm asking about this because I have a phone that I want to get into that is protected by a pattern lock. I haven't examined it yet, but I am strongly expecting:

- No root
- No custom recovery
- No ADB debugging enabled

I know I can bypass the pattern lock from CWM/TWRP (rm /data/system/gesture.key)...but I would prefer to not have to do an overwrite of the recovery partition if it can be avoided.

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Android :: Dynamic Change To Options Menu

Sep 12, 2009

I am trying to manage the options items, making one button visible and another invisible based on whether a background service is active.

Here's a snippet of my menu/option.xml: <item android:id="@+id/arm" android:title="Arm" /> <item android:id="@+id/disarm" android:title="Disarm" android:visible="false" android:enabled="false" /> ......................................

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Android :: Make Dynamic Options Menu?

Sep 9, 2010

The problem is that the following method gets called one time when the Menu button is pressed: public boolean onCreateOptionsMenu(Menu menu) How can I recreate the menu at a later time in order to change some options, disable some options, etc?

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Android :: What Is Best Way To Implement Dynamic Textures In OpenGL ES?

Jul 2, 2009

I have a texture-mapped cube based in part on the Kube API demo and the Textured Cube example from anddev.org, It is working fine using bitmaps loaded from R.drawable.. what I need to do now is to make the texture for each face dynamic (using Bitmaps created in code). I'm having trouble understanding how to change the textures on the fly and I'm hoping someone can point me in the right direction.What would I need to change in this code to allow an existing texture to be replaced (eg. a new Bitmap would be passed in instead of loading the resource, but when I try this the texture remains unchanged).

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Android :: How To Load Dynamic Array From Vector?

Feb 1, 2010

how to load dynamic array from vector in android?

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Android :: How Can I Make Dynamic Flipping Screen?

Apr 19, 2010

I am parsing data through the web service. I want the flipping horizontally rather than vertically. Here is a tutorial where ViewFlipper is used but it is for static data.

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Android :: Making Padding Dynamic In A FrameLayout

Apr 2, 2010

I'm following an example where the author hard coded a paddingTop to 370px. How do I make that paddingTop dynamic? When I run this in 2 AVDs with HVGA and WVGA80 I get the frame floating at different heights. I'd like to say something like paddingTop=80%, but that doesn't work.

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Android :: Dynamic Linking On Mobile Platforms

Oct 31, 2010

I have heard that the iPhone does not support dynamic linking. I want to know whether any mobile platforms support dynamic linking, such as Android or BlackBerry?

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