ios4

问题 In my app, if the user has not configured their E-mail account on their iPhone, then when the user opens the application, it will ask for e-mail configuration (means the app redirects to "settings >> mail >> add account " add account page), How can I do that? I searched and found one similar question in stack overflow but it was not helpful. just like this so question 回答1: just see the official sample code.Here is the link:SampleCode find the launchMailAppOnDevice() function. // Launches the

问题 I have a question that, Is it possible to get and play the iPod library songs / playlist using AVAudioPlayer instead of using MPMusicPlayer? Thanks in advance, Chandra. 回答1: One way i tried with is just copy the song from iPod library to your app then you can play. When you close then you can delete also those songs. But makes your app heavy in terms of size. See my post. Another way i found is using AVPlayer of AVFoundation framework. This supports iPod library. For reference of AVPlayer you

问题 The issue happens at XCode>'Build and run', not when running it in 'Instruments > Leaks'. So it seems an issue with Xcode. If that is the case, I don't mind doing an extra rebuild. However, if issue will also happen after app is posted in iTunes app store, and customer installs the app in her device, she would have to reinstall the app every time she changes language/region. (needles to say, that would not be acceptable). Is this issue: a) just in Xcode (not in app store)? b) not experienced

问题 We have provisioned 3 devices for our iPhone development. 2 developers and one manager phones. When the manager used to be here, we used to connect his phone to our mac and share the build with him. He is working remotely now. How shall I send the build to him now. His device is already provisioned and he is now running old version of our app (under development). We need to update his phone with the new build. We are using XCode4.2 and Lion. Please help. 回答1: You could do you own OTA setup:

问题 I am using FbGraph API for facebook integration. Everything is working fine, but the problem is that the FbGraph API does not rotate in landscape view. I also used the shouldAutorotateToInterfaceOrientation to YES, and i tried to put a breakpoint in didRotateFromInterfaceOrientation . It is never being called. I am really stuck into this. pls help 回答1: I use below and its work fine, 1) post notification in - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation

问题 I am new to iPhone. Could you please help me to modify the SpeakHere app from Apple to record in mono format. What should I have to set for mChannelsPerFrame and what else should I set? I already change some part for record on linearPCM WAVE format. Here is link to speakHere. Here is what I think they allow me to change but I don't quite understand on sound: void ChangeNumberChannels(UInt32 nChannels, bool interleaved) // alter an existing format { Assert(IsPCM(), "ChangeNumberChannels only

问题 I know that there are memory leaks that are no big deal or are out of the individual developer's control as they are in the sdk itself, but the one I'm seeing is 32KB on the iPhone 4 build against iOS SDK 4.2. I have not been able to trigger this on a 3GS. It happens in response to user interaction (in response to opening the photo library, and the leak seems to happen while I'm in the photo library), so it could build up quickly. Here's the stack trace I'm seeing on the iPhone 4: 0 libSystem

问题 Using the AVFoundation framework, I have tap to focus using this code: - (void) autoFocusAtPoint:(CGPoint)point{ NSArray *devices = [AVCaptureDevice devices]; for (AVCaptureDevice *device in devices) { [device unlockForConfiguration]; if ([device hasMediaType:AVMediaTypeVideo]) { if([device isFocusPointOfInterestSupported] && [device isFocusModeSupported:AVCaptureFocusModeAutoFocus]) { if([device lockForConfiguration:nil]) { [device setFocusPointOfInterest:point]; [device setFocusMode

问题 I am converting RGB to HSV using built in function of UIColour: - (BOOL)getHue:(CGFloat *)hue saturation:(CGFloat *)saturation brightness:(CGFloat *)brightness alpha:(CGFloat *)alpha but for some RGB it is not giving correct output. CGFloat h,s,v,a; UIColor *tColor=[UIColor colorWithRed:(230.0/255.0) green:(226.0/255.0) blue:(226.0/255.0) alpha:1.0]; BOOL success=[tColor getHue:&h saturation:&s brightness:&v alpha:&a]; NSLog(@"Output-> Success:%d, hue:%f, sat:%f, value:%f, alpha:%f",success,h

问题 I am Parsing Web urls from server and storing them in Strings and then displaying it on Webview. But now when i am parsing Spanish words like http://litofinter.es.milfoil.arvixe.com/litofinter/PDF/Presentación_LITOFINTER_(ES).pdf it is accepting it PDF File Name ++++++ http://litofinter.es.milfoil.arvixe.com/litofinter/PDF/Presentaci PDF File Name ++++++ ón_LITOFINTER_(ES).pdf i.e two different strings... i know i have to make small change that is append the string but i am not able to do it