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  • Getting back from security & location to my application

    - by sandman42
    Hi, I have an application that allows the user to enable GPS. In order to do it, first in the main activity I do: lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); if (!lm.isProviderEnabled(LocationManager.GPS_PROVIDER)){ showGpsOptions(); } showGpsOptions() is: private void showGpsOptions() { Intent gpsOptionsIntent = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS); startActivityForResult(gpsOptionsIntent, BACK_FROM_GPS_ACT); } and finally I override main activity onActivityResult in this way: protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == BACK_FROM_GPS_ACT){ ; } super.onActivityResult(requestCode, resultCode, data); } Problem: the page show up and works, but when I press back I get back to home screen. Question: how can I get back to my application? Thanks a lot

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  • Selecting pictures from database

    - by user1691618
    Okay guys, I need some help. I'm trying to design a page where a user can ask a question and upload up to 4 pictures. I have 2 database tables, questions and image_table. I have everything uploading correctly, so that's not my problem. What I am having trouble doing is selecting images from the image_table database that only correspond to that question. I can't figure out how to do this. Any help would be GREATLY appreciated.

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  • PHP Get Shape Coordinates From Points

    - by Ozzy
    Im sure if the title is exactly what I am trying to describe so sorry if it isnt. Ok here is what i am trying to do: What i want to do is create a function that you can enter unlimited ammount of coordinates ( the blue dots) and then it will create a shape like so and then return all coordinates the shape covers. Because this is for working with pixels, there will be no decimal coordinates. Something that can be used like so: print_r(get_coords(12,6, 23,13, 30,9, 37,24, 24,34, 25,24, 7,30, 6,15)); // ^ Will output an array of all x and y coordinates that the shape covers How would i go about doing something like this?

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  • Adding a row to a ListView that displays "Loading" while information is downloaded. Like in the Market.

    - by user577139
    I've tried, but have had no luck trying to find this answer elsewhere. I want to add a row to the bottom of my listview that displays "Loading..." and maybe a spinning progress indicator. My program already loads additional information into the listview once the user scrolls to the bottom. But I want the user to be able to see that the program is indeed loading something. Example: If you go to the android marketplace and scroll to the bottom of one of the lists, the last row will say "Loading...". Then once the data is loaded, that bar is replaced with the first item of the new data. Sorry, it's a little hard to describe. I am NOT trying to add a footer to the bottom of the list view. I want it to be an actual item in the listview.

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  • read successive frames OpenCV using cvQueryframe

    - by AtharvaI
    Hi all I have a basic question in regards to cvQueryFrame() in OpenCV. I have the following code: IplImage *frame1,*frame2; frame1 = cvQueryFrame(capture); frame2 = cvQueryFrame(capture); Now my question is: if frame1 is a pointer to the first frame, is frame2 a pointer to the 2nd frame? So will the two cvQueryFrame() calls read successive frames? I thought I'd check myself first but the pointers frame1,frame2 seem to have the same hex value. :s I just need to capture two frames at a time and then need to process them. Thanks in advance

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  • SensorManager method crashes program

    - by Aidan
    Hi guys, When I run the following method my Android application crashes. I can't find the error because I get a "Source Not Found" error. Anyone have any idea's what I'm doing wrong? public void bearing(){ SensorManager sm = (SensorManager)getSystemService(Context.SENSOR_SERVICE); Sensor aSensor = sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); Sensor mfSensor = sm.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD); sm.registerListener(myAccelerometerListener, aSensor, SensorManager.SENSOR_DELAY_UI); sm.registerListener(myMagneticFieldListener, mfSensor, SensorManager.SENSOR_DELAY_UI); float[] values = new float[3]; float[] R = new float[9]; SensorManager.getRotationMatrix(R, null, accelerometerValues, magneticFieldValues); SensorManager.getOrientation(R, values); //Convert from Radians to degrees values[0] = (float) Math.toDegrees(values[0]); values[1] = (float) Math.toDegrees(values[1]); values[2] = (float) Math.toDegrees(values[2]); }

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  • Using App Engine to update a database in a app

    - by tyczj
    I have been reading about app engine but I still dont know what I can and cant do with it in a android application. Basically what I want to do is be able to create/manage a database in the cloud that the app can pull down and update the local database if needed. Creation and managing would be done outside of the app by me. I dont know much about all of this as I am just getting started with it but I already have an application made, I just want to add this feature to it. I have never written any sort of Web Service calls or anything either but I have used them to get data and such Can this be done? Any tutorials out there to help me out?

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  • Is there official API for google-maps driving navigation?

    - by Zigfreid
    I've found that on Google support driving navigation on latest Android. http://www.google.com/mobile/navigation/index.html But, I can't find any kinds of API set to provide those kinds of functions. Is there navigation support API? or isn't it released yet? I can't understand why it's not included on Ginger bread version. They said that Nexus S already support Driving navigation. Do you have any information about this issue? Please let me know. Thanks.

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  • Using 'ref code' related to the spinner option chosen

    - by user1508541
    I am trying to add a spinner function in a trial app which compares the frequency charts of earphones. I am trying to extract the info from " http://www.headphone.com/learning-center/build-a-graph.php " website. what I want to do is make the spinner work like the drop down list in the mentioned website. On further inspection what I found was that every dropdown element is provided with a unique code that is called when the particular element is selected. I need help in replicating the same in an android spinner.

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  • Calculating the angle between two points

    - by kingrichard2005
    I'm currently developing a simple 2D game for Android. I have a stationary object that's situated in the center of the screen and I'm trying to get that object to rotate and point to the area on the screen that the user touches. I have the constant coordinates that represent the center of the screen and I can get the coordinates of the point that the user taps on. I'm using the formula outlined in this forum: How to get angle between two points? -It says as follows "If you want the the angle between the line defined by these two points and the horizontal axis: double angle = atan2(y2 - y1, x2 - x1) * 180 / PI;". -I implemented this, but I think the fact the I'm working in screen coordinates is causing a miscalculation, since the Y-coordinate is reversed. I'm not sure if this is the right way to go about it, any other thoughts or suggestions are appreciated.

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  • AsyncTask won't stop even when the activity has destroyed

    - by Raja
    Hi all, I have an AsyncTask object which starts executing when the activity is created and does stuff in the background (downloads upto 100 images). Everything works fine but there is this peculiar behavior which i'm not able to understand. For eg: when the android screen's orientation changes then the activity is destroyed and created again. So I override the onRetainNonConfigurationInstance() method and save all the downloaded data executed in the AsyncTask. My purpose of doing this is to not have AsyncTask run each time activity is destroyed-created during orientation changes, but as i can see in my logs the previous AsynTask is still executing. (The data is saved correctly though) I even tried to cancel the AsynTask in the onDestroy() method of the activity but the logs still show AsynTask as running. This is really strange behavior and would really be thankful if someone can tell me the correct procedure to stop/cancel the AsynTask. Thanks

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  • Can't seem to be able to set ListViewItem.imageIndex

    - by TKL
    I have been scratching my head with this error for at least an hour, what the heck is wrong here? In a loop: if (selectedItems[x].ImageIndex == 3) { List<ListViewItem> dupes = CP.listCache.FindAll(delegate(ListViewItem item) { return item.Text == selectedItems[x].Text; }); if (dupes != null && dupes.Count == 1) dupes[0].ImageIndex = 0; } I can access the imageIndex, but not set it. ArgumentOutOfRange exception occurs.

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  • XImage - how to resize?

    - by Ajan
    I've got an XImage retrieved by XShmGetImage function. How can I resize it? Is there any function in X11 libraries to perform this operation or I need to use external library?

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  • Problems using Custom Layout in XML

    - by Kevin
    I've created a new GridLayout class that I want to use in an XML File. The class is in another project. I've created the attrs.xml file in the other project with my properties but when the constructor gets called with the AttributeSet, none of the values are set. In my xml for my screen layout, I refer to the layout with the following: xmlns:gridLayout="@com.mastertechsoftware.AndroidUtil:http://schemas.android.com/apk/res/com.mastertechsoftware.AndroidUtil" Not sure if that is right. I have the attrs.xml file being compiled to R.java in com/mastertechsoftware/AndroidUtil. All the right styleable values are there. In my constructor, I use: TypedArray a = c .obtainStyledAttributes(attrs, R.styleable.GridLayout); this.numRows = a.getInt(R.styleable.GridLayout_numRows, -1); Nothing comes back (-1 does but that means nothing is there) If I use int n = a.getIndexCount(); I get 0.

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  • Finding images on the web

    - by Britt
    I sent someone a photo of me and they replied that this particular photo was all over the web. How do I find out where this photo is and is there any way that I can see if there are other photos of myself that someoe has shared without my knowledge? I am very worried about this and want to find out where these pictures are please help me!

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  • Questions Regarding Handling of Received SMS

    - by Edwin
    Hi, i have managed to successfully write a little test app that can receive and send SMS, but got a couple of questions. (That's 'cos part of the code i copied from elsewhere and i would like to understand better). In my AndroidManifest as well as the sub-class of BroadcastReceiver, there is reference to the string literal "android.provider.Telephony.SMS_RECEIVED". However, i couldn't find any reference in the API that mentions this. Could someone point me to some reference that lists/explains these? As part of getting the message from the Intent, i did this: Object[] pdus = (Object[]) intent.getExtras().get("pdus"); Again this question is related to the use of hardcoded string literal. Where is the string "pdus" listed and described? Thanks in advance!

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  • R.layout.main error, no solutions have worked

    - by user3404278
    I am just beginning to develop for Android. The tutorial book I am using uses the code below, but, put simply, it does not work. As I've searched for an answer, I find that none of the solutions people say have rid them of this error have worked for me. Here is a list of methods that did not work. -Cleaning: It just said it couldn't clean until I resolved the error. -Building the Project: It built it, but the error did not go away. -Deleting import R: The error did not go away. -Renaming import R to import me.package.R: The error persisted. Here is the code that is generating the error. public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } Can anyone help me out?

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  • What influences running time of reading a bunch of images?

    - by remi
    I have a program where I read a handful of tiny images (50000 images of size 32x32). I read them using OpenCV imread function, in a program like this: std::vector<std::string> imageList; // is initialized with full path to the 50K images for(string s : imageList) { cv::Mat m = cv::imread(s); } Sometimes, it will read the images in a few seconds. Sometimes, it takes a few minutes to do so. I run this program in GDB, with a breakpoint further away than the loop for reading images so it's not because I'm stuck in a breakpoint. The same "erratic" behaviour happens when I run the program out of GDB. The same "erratic" behaviour happens with program compiled with/without optimisation The same "erratic" behaviour happens while I have or not other programs running in background The images are always at the same place in the hard drive of my machine. I run the program on a Linux Suse distrib, compiled with gcc. So I am wondering what could affect the time of reading the images that much?

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  • Detect if an app was uninstalled

    - by mobilekid
    Is there a way to get a system notification when an app has been uninstalled? I would like to maintain a table of all clients' info currently using my app. However, that seems impossible if there is no way to detect this event. The first solution I can think of is to have an always running service in the background listening for android.intent.action.PACKAGE_REMOVED. But then would that service be killed once the uninstallation process has ended, or would it be stopped just before the process has kicked off? Also even if this is a solution it's has the potential to put off a lot of people when they realise that part of the app is running in the background. Any suggestions? Thanks!

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  • uploading app problem in developers site

    - by Siva K
    hi i have posted one of my app in market.android.com when i am trying to post second app it shows "You have another application on Market with the same package name. Go to that other application, and click upgrade" I dont want to upgrade it but i want my second app to be posted. When i tried to change the package name it showed lots of errors, so i decided to create the app once again in a new package and project name, it seems to be a very lengthy process.... pls help me to solve the issue bcoz i have created all my app in same package name unknowingly.......

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  • Is a live internet connection required for push notification?

    - by Heshan Perera
    This maybe a silly question, but I need confirmation and I have no one else to ask. I am trying to understand the implications of implementing my own push notification for android mobile devices. This requires a continuous TCP connection to a server, though most of the time it will be idle. My assumption is that, even when idle, for the server to be able to push data to the client through the TCP connection, an active internet connection will always be required, and if the connection is disrupted (i.e. the user switches the connection off) this push will no longer be possible. Is this assumption correct ?

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  • About curse of dimensionality

    - by Dan
    My question is about this topic I've been reading about a bit. Basically my understanding is that in higher dimensions all points end up being very close to each other. The doubt I have is whether this means that calculating distances the usual way (euclidean for instance) is valid or not. If it were still valid, this would mean that when comparing vectors in high dimensions, the two most similar wouldn't differ much from a third one even when this third one could be completely unrelated. Is this correct? Then in this case, how would you be able to tell whether you have a match or not?

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  • scaling background and min size

    - by ross Hulford
    Hi I have big background images 1200 by 1200, what i would like to do is expand the images when the user resizes the browser but constrain it so they never scale any smaller than the original size. There all lots of scalable bg images out there but none I can find that do this, any help would be appreciated.

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  • DocumentBuilder.parse() / Parsing Entities

    - by stormin986
    I'm new to parsing XML and am having an issue with entities. (Am doing this on Android, if it makes a difference). Is there a way to have it turn an entity into the character it represents? I have this in the child of an element: "isn&#39;t" (minus quotes). I would prefer it parse it and the end result be a single text node. However, right now this is turned in to TEXT, ENTITY, TEXT. Is there a way to automatically have it parse the entity into text, or a manual way to do it?

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