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  • How can I fill a rect with an alpha color using CoreGraphics?

    - by Rits Plasman
    In my drawRect method, I am drawing a PNG image. On top of that, I want to draw a rect with a 20% alpha color, like this: [[UIColor colorWithWhite:0.0 alpha:0.2] set]; UIRectFill(rect); The problem is, that the alpha property seems to get ignored. No alpha is applied at all, just a black rectangle is drawn. How can I fix this? Thanks in advance!

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  • PHP form values after POST in dropdown

    - by FFish
    I have a form with 'selected' values pulled from the database. Now I want the user to edit the values. When the data is send I want to show the new values. When I submit my form I always get the 'green' value? What am I doing wrong here? <?php // pulled from db $color = "blue"; // update if (isset($_POST['Submit'])) { echo "write to db: " . $_POST['name'] . " + " . $_POST['color']; } ?> <html> <form name="form1" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>"> <label for="name">Name:</label> <input type="text" name="name" size="30" value="<?php echo (isset($_POST['name'])) ? $_POST['name'] : ""; ?>"> <br /> <label for="color">Color:</label> <select name="color"> <option <?php echo (isset($_POST['color']) || $color == "red") ? 'selected="selected"' : ''; ?> value="red">red</option> <option <?php echo (isset($_POST['color']) || $color == "blue") ? 'selected="selected"' : ''; ?> value="blue">blue</option> <option <?php echo (isset($_POST['color']) || $color == "green") ? 'selected="selected"' : ''; ?> value="green">green</option> </select> <br /> <input type="submit" name="Submit" value="Update"> </form> </html>

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  • How to change colors for ListView, alternating row color?

    - by Gerry
    I have a couple of list views, one uses TextViews laid out with xml, the other uses a custom class derived from View. The default halloween color scheme is pretty ugly. How can I change the background and selection colors for the list elements. Ideally, I'd like to be able to do this in code not xml, to handle the custom view. Thanks, Gerry

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  • VS2010: Syntax Color Highlighting and Intellisense in a JS file.

    - by George
    I have an external *.js file that contains Javascript. How do I get teh same intellisense and color highlighting as I do in an ASPX page? Here's my options for the js extension (set to 'Script Editor') And here's what it looks like in an ASPX page (How I would like it to look.) BTW, I did a full reset my Settings, setting them to VB and no luck.

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  • How to set the back groung color to the UIActionSheet in iPhone?

    - by Madan Mohan
    Hi Guys, I need to change the back ground colour of the action sheet, UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:@"Create Estimate", @"Record Expense",@"Add Credit",@"Delete Customer", @"Cancel", nil]; actionSheet.actionSheetStyle = UIActionSheetStyleDefault; actionSheet.destructiveButtonIndex=3; [actionSheet showInView:appDelegate.window]; // show from our table view (pops up in the middle of the table) [actionSheet release]; please tell how to set the back ground color for action sheet.

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  • Is there a way to change the color of plots in jQuery flot without redrawing the whole chart?

    - by Sam Lee
    I have a chart that I'm drawing using flot. I want to change the colors of the data plots when someone hovers over text. Currently, I am doing this by redrawing the entire chart each time I need to highlight something. This is pretty slow (about 30 milliseconds for a simple chart, as much as 100 for a more complicated chart). Since all I want to do is change the color, is there a faster solution?

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  • Is the video recording possible in the background service?

    - by pyt
    Hello, All. I've tried video recording in the background. But had failed. Under normal circumstances, the recording works properly. However, if HOME key down- Home screen or Other Activity is running, recording terminates. In such a situation, I want to record continuously. I want to record whole process! What should I do? thanks. -Michael

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  • What happens on Activity.finish() with AsyncTask still running in background?

    - by stormin986
    What happens on Activity.finish() with an AsyncTask still running in background? Does it just pop the Activity off the Activity Stack, but wait to destroy the Activity object until the AsyncTask fully completes (since the AsyncTask is an inner class of my Activity)? Also, would it act any differently if the AsyncTask were a public, non-inner class that held no references to the instance of the Activity?

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  • How to change the color of a indefinite ProgressBar?

    - by Janusz
    I have a progressbar with the following style: style="?android:attr/android:progressBarStyleSmall" Sadly the bar is nearly white and in my case displayed on a white background. The progressbar is nearly invisible because of that. How can I change the color of the progressbar? A darker grey would be great.

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  • What is a good way of Enhancing contrast of color images?

    - by erjik
    I split color image for 3 channels and made a contrast enhancement of each channel. Then merged them together, I like the image at the result, but it has different colors. Black objects became yellow and so on... EDIT: The algorithm I used is to calculate the 5th percentile and the 95th percentile as min and max values, and then expand the values of image so that it will have min and max values as 0 and 255. If there is a better approach please tell me.

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  • How can I change the color of a Google Maps marker?

    - by abeger
    I'm using the Google Maps API to build a map full of markers, but I want one marker to stand out from the others. The simplest thing to do, I think, would be to change the color of the marker to blue, instead of red. Is this a simple thing to do or do I have to create a whole new icon somehow? If I do have to create a new icon, what's the easiest way to do that?

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  • How do I change the color of a Cocos2d MenuItem?

    - by Rob Sawyer
    [MenuItemFont setFontSize:20]; [MenuItemFont setFontName:@"Helvetica"]; //I'm trying to change the color of start (below item) MenuItem *start = [MenuItemFont itemFromString:@"Start Game" target:self selector:@selector(startGame:)]; MenuItem *help = [MenuItemFont itemFromString:@"Help" target:self selector:@selector(help:)]; Menu *startMenu = [Menu menuWithItems:start, help, nil]; [startMenu alignItemsVertically]; [self add:startMenu];

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  • Making "helper" text in a form be a different color then typed text.

    - by aslum
    <input name="phone" type="text" id="phone" value="Phone #" onfocus="value=''"> I've got two problems here. The main one is I would like the helper text (in this case "Phone Number") to be a different color then the inputted text from the user, to make it easier for the user to differentiate between filled and unfilled fields. The second is that with this methodology (onfocus="value''") if you mistype something in a field and come back to it you have to retype the whole thing which isn't really acceptable.

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  • Not sure what happens to my apps objects when using NSURLSession in background - what state is my app in?

    - by Avner Barr
    More of a general question - I don't understand the workings of NSURLSession when using it in "background session mode". I will supply some simple contrived example code. I have a database which holds objects - such that portions of this data can be uploaded to a remote server. It is important to know which data/objects were uploaded in order to accurately display information to the user. It is also important to be able to upload to the server in a background task because the app can be killed at any point. for instance a simple profile picture object: @interface ProfilePicture : NSObject @property int userId; @property UIImage *profilePicture; @property BOOL successfullyUploaded; // we want to know if the image was uploaded to out server - this could also be a property that is queryable but lets assume this is attached to this object @end Now Lets say I want to upload the profile picture to a remote server - I could do something like: @implementation ProfilePictureUploader -(void)uploadProfilePicture:(ProfilePicture *)profilePicture completion:(void(^)(BOOL successInUploading))completion { NSUrlSession *uploadImageSession = ..... // code to setup uploading the image - and calling the completion handler; [uploadImageSession resume]; } @end Now somewhere else in my code I want to upload the profile picture - and if it was successful update the UI and the database that this action happened: ProfilePicture *aNewProfilePicture = ...; aNewProfilePicture.profilePicture = aImage; aNewProfilePicture.userId = 123; aNewProfilePicture.successfullyUploaded = NO; // write the change to disk [MyDatabase write:aNewProfilePicture]; // upload the image to the server ProfilePictureUploader *uploader = [ProfilePictureUploader ....]; [uploader uploadProfilePicture:aNewProfilePicture completion:^(BOOL successInUploading) { if (successInUploading) { // persist the change to my db. aNewProfilePicture.successfullyUploaded = YES; [Mydase update:aNewProfilePicture]; // persist the change } }]; Now obviously if my app is running then this "ProfilePicture" object is successfully uploaded and all is well - the database object has its own internal workings with data structures/caches and what not. All callbacks that may exist are maintained and the app state is straightforward. But I'm not clear what happens if the app "dies" at some point during the upload. It seems that any callbacks/notifications are dead. According to the API documentation- the uploading is handled by a separate process. Therefor the upload will continue and my app will be awakened at some point in the future to handle completion. But the object "aNewProfilePicture" is non existant at that point and all callbacks/objects are gone. I don't understand what context exists at this point. How am I supposed to ensure consistency in my DB and UI (For instance update the "successfullyUploaded" property for that user)? Do I need to re-work everything touching the DB or UI to correspond with the new API and work in a context free environment?

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