iphone

can we use POSIX sockets in iPhone

Can i use POSIX sockets in iPhone OS? ...

Can the iPhone use Bonjour messaging?

Can the iPhone use Bonjour messaging? ...

iphone app user inactive time measuring, automatic logout

can any one help me with this how to measure inactive time of iphone app user and perform automatic logout. already i have done the login and app level logout part...... ...

Import AddressBook Contact Info, how to handle empty fields?

I am importing contacts info into some textfields, but the app crashes if there are no entries for certain fields, like phone, email, etc. Here are my textfields: First Name Middle Name Last Name Main Phone Mobile Phone Email Address Website Suppose the selected contact doesnt have a second Phone number...

How can I convert a double into HH:MM:SS in ObjectiveC

I've got a double 0.27392 and I know it is 6:34:27 AM. This is simple in Excel, but I can't get NSDateFormatter to work its magic. ...

Translate CGPoint from UIView to AVCaptureVideoPreviewLayer

I'm trying to implement tap to focus and tap to exposure in my iPhone app. I'm using the AVFoundation camera interface and I'm having trouble moving between the 2 co-ord systems. UIView uses a system that goes from (0,0) in the top left (in portrait mode) to (320,480) in the bottom right. However the AVCaptureSession uses a system tha...

Good practices for building web application that can later have and mobile(Android/iPhone) version

Hi, can you advice me a book or something else containing good practices about how to build/structure a web application in a way that will be easy to extend it with an Android/iPhone version later. I am currently trying to get into Django so it will be nice if the practices are related to it, but every hint will be appreciated. ...

Is there any exit editing mode for UITableView?

The flow is something like that... The user see a UITableView, when the user click the "edit", the user can delete the UITableView's cell, after that, he /she click done to confirm. Which method is called when the user click the done key? Thank you. ...

Any idea how to write code that can be easily ported to iphone, android and blackberry?

I'm looking for a way to easily port content driven applications from one mobile platform to another. Currently HTML5+js seems to be the only language that can be easily reused. Can you share your experience? I'm looking for a way to go forward. ...

Sending multiple sms with different text from iPhone

Hello, I'm trying to get my app to send multiple sms with different text to different recipients. I'm using the MFMessageComposeViewController to make this happen, but when invoking the second message, for some reason the text-field for the message text does not appear. It looks like the text field is not set to be firstResponder. Any id...

UIImageView displays white in place of the status bar

I have set the statusbar to unspecified in IB. On the app start up the space where the status bar was is white, not allowing my image to fill the screen. When I return to that View after selecting back from another view. The image is full and he white bar is gone. Do I have to set the status bar to hidden in the code as well as in ...

error when trying to undo Context

i try to undo myContext from save state then after i draw the line i call undo method to restore my context to previous but it report error <Error>: CGContextRestoreGState: invalid context code - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; CGPoint currentPoint = ...

how can i display voilet color in imageview

I need to display a image view that is filled with violet color picture as shown below, but there us no UIColor color violet for this. How can i display it? ...

sqlite encryption/decryption + sqlcipher + iPhone

Hi everyone, I have been trying to encrypt/ decrypt a sqlite database in my iPhone project. I am able to encrypt the database by using the reKey method. But I am unable to decrypt it. I have kept my sqlite.db file in a folder. Currently trying it on a simulator. Code snippet: [[SQLiteDB sharedSQLiteDB] open: withKey:@""]; [[SQLiteDB ...

sms notification

hi all, I am a new iphone application developer. i am making an application which requires an incoming message notification even if the application is closed. can anybody tell me how to do that... Thanks Rachit Taneja ...

The controller in the left pane of the iPad Settings Application

Does anyone know what view/controller do I have to use to obtain the same look as the Settings application on iPad has in the left pane. Without using the splitviewcontroller that is. Thanks in advance! ...

issue of displaying an image in secondviewcontroller

Hi!! Am new to this forum and also new to IPhone development. Following is the issue: I have two views named pickerviewcontroller and secondviewcontroller which has different xib files. I choose a picture through the UIImagePickerController interface from the Photo Library, I was trying to display the chosen image in the second view. cod...

How to delete the cache from UIWebview or dealloc UIWebview

Every time I load a new page with UIWebView the before loaded page is shown for a short time. How can I clear that cache? Another possibility would be to dealloc UIWebview. I tried that but than my UIWebView is always "empty". How should the alloc and dealloc be done in this case? I noticed that the UIWebView is consuming about 10 MB ...

How to export file with AVAssetExportPresetPassthough flag in the exportSession?

I want to use the AVAseetExportSession class to export the file from ipod liabrary to appliation temp. AVAssetExportSession *exporter = [[AVAssetExportSession alloc] initWithAsset: fileAsset presetName: AVAssetExportPassthrough]; if i want to you the AVAssetExportPassthroug...

Ftp multiple file transfer

How can I wait the end of an ftp transfer on my iPhone app, if I have to do many ftp transfers in sequence? I call the same method to make the transfers, changing the name of file. [Ftp receiveFtp:file1]; [Ftp receiveFtp:file2]; [Ftp receiveFtp:file3]; Here, for example, I should wait the end of the first method before calling the sec...