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  • keeping references to inflated custom views

    - by darren
    Hi While researching how to create custom compound views in Android, I have come across this pattern a lot (example comes from the Jteam blog) : public class FirstTab extends LinearLayout { private ImageView imageView; private TextView textView; private TextView anotherTextView; public FirstTab(Context context, AttributeSet attributeSet) { super(context, attributeSet); LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); inflater.inflate(R.layout.firstTab, this); } } I mostly understand how this is working, except for the part where inflate() is called. The documentation says that this method returns a View object, but in this example the author does not store the result anywhere. After inflation, how is the new View created fromt eh XML associated with this class? I thought about assigning it to "this", but that seems very wrong. thanks for any clarification.

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  • What is the android_metadata table?

    - by Janusz
    I try to integrate an existing database file into my Android project. I follow the instructions on this blog. They write that I have to add a table android_metadata with a column called locale and put en_US into it. I try to figure out what this table is used for. Because my database content is german. Maybe i then should not put en_US into it? Is this required for localisation of the database content or is the table not needed at all?

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  • Laplacian of gaussian filter use

    - by maximus
    This is a formula for LoG filtering: Also in applications with LoG filtering I see that function is called with only one parameter: sigma(s). I want to try LoG filtering using that formula (previous attempt was by gaussian filter and then laplacian filter with some filter-window size ) But looking at that formula I can't understand how the size of filter is connected with this formula, does it mean that the filter size is fixed? Can you explain how to use it?

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  • CacheManager.getCacheFileBaseDir() always returns null

    - by Leon
    Hi, I've been trying to use the CacheManager for caching some http requests but it failed every time with a nullpointer exception. After some digging I believe I found out why: CacheManager.getCacheFileBaseDir() always returns null so when I try to use CacheManager.getCacheFile() or CacheManager.saveCacheFile() they fail. CacheManager.cacheDisabled() returns false :S I hadn 't created a cache partition via the AVD manager so I thought the problem lie there. But after creating a cache partition getCacheFile() still return null: 03-16 00:25:16.321: ERROR/AndroidRuntime(296): Caused by: java.lang.NullPointerException 03-16 00:25:16.321: ERROR/AndroidRuntime(296): at android.webkit.CacheManager.getCacheFile(CacheManager.java:296) What could be the problem? I've got the code posted here: http://pastebin.com/eaJwfXEK But it's a bit messy because I've been trying tons of stuff. Why does CacheManager.getCacheFileBaseDir() return null and not a File object? Thanks in advance! Leon

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  • Regarding BMA-150 Acceleration sensor

    - by vinaykumar
    Hi all, At present i am working on hal part of sensors in android sdk, we are using 3- Axis BMA-150 Accelerometer sensor to get acceleration values with respect to X,y,Z Axis, I want to know whether this sensor will give o/p directly in SI units by using some calibration techniques or what ? , and i noticed that in sensor.c file they mentioned 720.0 LSG = 1G(9.8 m/s2), what is the relation between LSG and acceleration due to gravity? what is meant by LSG why they are multiplying the o/p of accelerometer x,y,z valuse with 9.8/720.0f . please help on this part . Thanks Vinay

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  • Getting Greyscale pixel value from RGB colourspace in Java using BufferedImage

    - by Andrew Bolster
    Anyone know of a simple way of converting the RGBint value returned from <BufferedImage> getRGB(i,j) into a greyscale value? I was going to simply average the RGB values by breaking them up using this; int alpha = (pixel >> 24) & 0xff; int red = (pixel >> 16) & 0xff; int green = (pixel >> 8) & 0xff; int blue = (pixel) & 0xff; and then average red,green,blue. But i feel like for such a simple operation I must be missing something...

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  • setting picture captured by built-in camera into an ImageView

    - by MAkS
    in my app i m calling built in camera for capturing picture but i want to set that picture into an image view following is the code . so what code should i add to it to set the picture into imageview. public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); startActivityForResult(intent, 0); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode == Activity.RESULT_OK && requestCode == 0) { String result = data.toURI(); // ... } } Thanks in advance

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  • call setListAdapter() from inside a thread

    - by Mats Hofman
    Hi, I have a problem with my ListActivity, i use a thread to show a ProgressDialog where get a list of all installed applications. I turn it into a list adapter and than i want to set the listadapter of the activity but i can't do that from the thread. I get the following error: ERROR/AndroidRuntime(14429): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. new Thread() { public void run() { showList(); // the method where i get all the apps and have the setListAdapter(); method progressDialog.dismiss(); } }.start(); How do I get it so I can use the setListAdapter from inside my thread

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  • Sound Effects/Manipulation?

    - by Adam
    Hello, I am creating an android app that basically records an applies an "Effect" on the audio track then plays it back. I got my app to record an play back but I am stuck an not sure where do go from here. I have been Googling for days now trying to find a open source audio library or some way to change the audio after I record it. I currently have it setup to play back using SoundPool an I't lets me speed up an slow down the audio. I would like to do things like change pitch an add echo etc. I will appreciate any responses because I am totally stumped right now. Thanks Adam

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  • How to upload images from iPhone

    - by Karthik.K
    Hi, I;m new to iPhone application development. I need to design an app to upload images from my iPhone to a HTTP Server. I tried following this http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone/2528575#2528575, but did not taste success. Please help me out. :) Thanks! :)

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  • KSoap2 list handling - is this the correct way?

    - by oozoo
    Hello, ksoap-newbie here I have a basic soap service running on glassfish, that returns List<String> like this <?xml version="1.0" encoding="UTF-8"?> <S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"> <S:Body> <ns2:getNamesResponse xmlns:ns2="http://namespace/"> <return>Name1</return> <return>Name2</return> </ns2:getNamesResponse> </S:Body> </S:Envelope> now in ksoap2 (android) I have to iterate the soap-object properties to get my list back: SoapObject result = (SoapObject) envelope.bodyIn; for(int i=0;i<result.getPropertyCount();i++) { list.add(result.getProperty(i)); } is there a better way? I couldn't find any class mapper in my implementation. thanks in advance

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  • clicking the debug button in Eclipse will not start debug mode

    - by iHorse
    i am running Eclipse 3.5.0 on a MacBook Pro using the Android SDK. i noticed that on this particular project i am working on i cant seem to actually enter debug mode. i click the little green bug icon in the tool bar and the app starts and runs. but if i switch over to the Debug Perspective i see no indication that it is running in debug mode. furthermore i can not hit any brake points that i have set. this makes debugging code a bit hard. Other projects that i am working on don't have this issue. any ideas on what i need to change in the project to get this to work?

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  • Converting .eps to .jpg

    - by Slinky
    Our print team saves raster images as .eps files. We need to convert about 11000 .eps to .jpg. We are using ImageMagick (with Ghostprint) on Linux. The conversion occurs but the resulting .jpg is not the same size as the source .eps - It's about 1/2 the size. Probably a problem converting a vector to a raster. Any way to solve this?

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  • Rotating images + content - jQuery or MooTools?

    - by Lenwood
    I've found a feature on two different websites that I'd like to include on one of my web projects, but I can't figure out how they're doing it. I think they're using either jQuery or mootools, but I'm not sure. http://www.x-plane.com/index_desktop.html I'm new here so I don't have the reputation to post the other link, but if you do a Google search for "Andrews Institute of Orthopaedics" its the top result. I'll see if I can answer a few questions to earn my keep. The thing that I like about these is that the images and text (including links) are all rotated together. I've done a few web searches related to cycle, rotate and slide but it's not coming together for me. Can anyone give me a nudge in the right direction?

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  • AsyncTask, RejectedExecutionException and Task Limit

    - by Samuh
    I am fetching lots of thumbnails from a remote server and displaying them in a grid view, using AsyncTask. The problem is, my grid view displays 20 thumbnails at a time, so that creates 20 AsyncTasks and starts 20 executes, one per thumbnail. I get RejectedExecution exception in my code. I recall reading somewhere that there is a limit to number of tasks that AsyncTask can have in its queue at a time, i might be hitting that. Was this bar lifted? Is there a way to increase this limit? Is it safe to just ignore this exception?(by having an empty catch(RejectedException e){} block?) I am running this code on Android 1.6 emulator and the API level in my code(minSDKVersion is 3). [EDIT: Added SDK and API level info]

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  • Identify which AlertDialog triggered onClick(DialogInterface dialog, int which)

    - by Kurian
    I'm creating a dialog as follows: @Override protected Dialog onCreateDialog(int id) { switch (id) { case DIALOG_1: return new AlertDialog.Builder(this) .setTitle(R.string.s_dlg1) .setPositiveButton(android.R.string.ok, this) .create(); case DIALOG_2: ... ... } return null; } @Override public void onClick(DialogInterface dialog, int whichButton) { if (dialog == ???) { ... } else if (dialog == ???){ ... } } How do I identify which dialog triggered the onClick method? I can't declare the interface methods as in-line when creating the dialog because I want to access variables in my class. Every other interface passes some sort of id to its methods to identify which object called the method, but I can't seem to do anything with 'DialogInterface dialog'.

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  • Face recognition Library

    - by Janusz
    I'm looking for a free face recognition library for a university project. I'm not looking for face detection. I'm looking for actual recognition. That means finding images that contain specified faces or libraries that calculate distances between specific faces. I'm using OpenCV for detecting the faces and a rough Eigenfaces Algorithm for the recognition now. But I thought there should be something out there with a better performance then a self written Eigenfaces Algorithm. I don't talk about speed as performance I'm looking for a library with better results as an simple Eigenfaces approach I took a look at faint but it seems the library is not very reusable for my own applications. I'm happy with a library in Python, Java, C++, C or something like that. The best thing would be if it can be run on a Windowsmachine

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  • phantom error "error parsing XML: unbound prefix"

    - by Brad Hein
    The error "error parsing XML: unbound prefix" shows up on my main layout: main.xml when I first open Eclipse. To make the error go away, all I have to do is make a modification to the file, then undo it, then hit save (have to make a change in order to be able to save file and thus trigger the new syntax check). My environment is: Fedora Eclipse Platform Version: 3.4.2 Based on build id: 20090211-1700 My target is Android API level 5. The first time I saw the error I spent a long time trying to track down "the problem" but later realized there isn't really a problem, it's just a phantom error. Screenshot: http://i50.tinypic.com/2i89iee.jpg Who should I report this to?

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  • Finding specific pixel colors of a BitmapImage

    - by Andrew Shepherd
    I have a WPF BitmapImage which I loaded from a .JPG file, as follows: this.m_image1.Source = new BitmapImage(new Uri(path)); I want to query as to what the colour is at specific points. For example, what is the RGB value at pixel (65,32)? How do I go about this? I was taking this approach: ImageSource ims = m_image1.Source; BitmapImage bitmapImage = (BitmapImage)ims; int height = bitmapImage.PixelHeight; int width = bitmapImage.PixelWidth; int nStride = (bitmapImage.PixelWidth * bitmapImage.Format.BitsPerPixel + 7) / 8; byte[] pixelByteArray = new byte[bitmapImage.PixelHeight * nStride]; bitmapImage.CopyPixels(pixelByteArray, nStride, 0); Though I will confess there's a bit of monkey-see, monkey do going on with this code. Anyway, is there a straightforward way to process this array of bytes to convert to RGB values?

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  • TextView defined in main.xml - how to "name" it to be able to use - setText() method?

    - by Oliver Goossens
    Hi, I am exploring android and developement and I found one problem. My app UI is defined in main.xml I have 2 texts and 2 buttons defined - easy app. I read that I may be able to change TEXT in the ACTIVITY using the setText() method. And thats the problem - how do I POINT the setText() Method? How do I tell it to change a specified text? If I would declare the TextView inside the Activity with NEW TextView NAME Object, I would just need to use NAME.setText(STRING)... But I didnt so i dont have anything like NAME of the object? How can this be done? I read something about r.IDs but I truly dont have a idea how to use them, where to find them and how to implement it .... Please advise Thank you Oliver

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  • Change Call Screen

    - by vyana
    I need to change or customize the call screen when initiating a call on Android. After searching on google I do not find any way to do it. There is no way to send DTMF tones during a call, the idea is to send a specific number to the call screen. So when a call is made is possible to see the number to dial during a call to the PBX. I tried to putting the number in the "status bar", but the notification hide after seconds and it is not practical. I appreciate any other suggestion. Thanks

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  • Setting unique key constraint for Db4oEmbedded EmbeddedConfiguration

    - by Viet
    Hi, I want to set unique key constraint for Db4oEmbedded EmbeddedConfiguration. Here goes my code: EmbeddedConfiguration myConf = Db4oEmbedded.newConfiguration(); myConf.common().objectClass(NotyUser.class).objectField("username").indexed(true); myConf.common().add(new com.db4o.constraints.UniqueFieldValueConstraint(NotyUser.class, "username")); The last line throws exception. I don't know why. I'm running Android SDK 1.5 and db4o 7.12 for Java. Please kindly advise. Thanks!

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  • TextToSpeech setOnUtteranceCompletedListener always returns -1 error?

    - by Robert Nekic
    I've been working with Android's TTS functions with general success however, one piece of it refuses to work for me; I can not successfully assign an OnUtteranceCompletedListener to my TextToSpeech object. I've tried implementing OnUtteranceCompletedListener in one of my classes and I've tried creating a new, stand-alone OnUtteranceCompletedListener instance. Both approaches are simple enough to implement and appear to yield proper listeners without exceptions...yet setOnUtteranceCompleteListener(myListener) ALWAYS returns -1 (ERROR). The documentation for this seems straight forward. Has anyone gotten this to work? I'm targeting SDK 4. Are there known issues with this with SDK4/v1.6?

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  • manu help me in the effect

    - by tismon
    http://www.zazzle.com/cr/design/pt-mug this is just a demo site. i am suppose to do something like this in PHP. can any one tell how this can be done with PHP ? what is the logic behind this ? is this possible with jquery or GD Library ? please help me.. thanks and regards tismon

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