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iphone - Delegates, can't get my head around them
    Hey, I'm looking for useful resources about Delegates. I understand that the delegate sits in the background and ... object? Thanks in advance! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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iphone - Table View Scrolling Async
    I am loading an image to a table view cell, each cell has an image. I've adapter a couple tutorials to the code below ... = image; }); }); } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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iphone - How to pick multiple images from UIImagePickerController in ios
    I am trying to simply enable picking multiple images from photolibrary using the UIImagePickerController.I'm relatively new ... : nil]; } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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iphone - How to expand and collapse rows using header section in a UITableView
    I have a table view. Now I want to collapse and expand rows by tapping on the section header. In other words, ... section. How can I do this? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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433 views
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iphone - How can I change the amount of indentation on my custom UITableViewCell while editing?
    I have made a custom UITableViewCell, and done it properly (adding everything to contentView, and overriding ... was never resolved). See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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319 views
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iphone - Advantages of using Core Graphics
    I would like to know what kind of advantages I get from using Core Graphics instead of Open GL ES. My main ... with other UI elements. Thanks. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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428 views
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iphone - Putting a UIView or UIWindow above Statusbar
    My goal is to draw an invisible button above the status bar on the top of my iPhone app ( ... window [statusWindow addSubview:statusBarButton]; See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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559 views
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iphone - UIAlertView crashing on undocumented method
    Our app has been crashing with a frequency of roughly 1 in 1,500 launches due to a bug that ... 4 QuartzCore 0x311db05c run_animation_cal lbacks See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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iphone - Turning screen off
    I need my application to be running without the iPhone going to sleep. But I'd like to turn the screen off ... user touched the screen? Thanks. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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450 views
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iphone - Testing asynchronous code on iOS with OCunit
    Does anyone know of any existing library that allows testing asynchronous code with OCUnit? I'm thinking about ... already by someone else. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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277 views
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iphone - Leak - GeneralBlock-3584
    When i try to check leaks of my iPhone App using Instruments, everything is just fine. Same App on actual ... (Apple is silent unfortunately). See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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520 views
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iphone - Finding GPS signal strength
    Is there any way to get an iPhone's GPS signal strength? I'd like to make some kind of display like this: ... = Green / Good or Excellent Signal See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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461 views
1 answer
iphone - adjust corners and crop the image openCV
    I am using open CV,in IOS. I already detected the boundary of the paper sheet in an Image as show in ... crop; return paperImage; } Thanks All See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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640 views
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iphone - Spacing between cells on UITableView with Custom UITableViewCell
    I have a UITableView loading a custom UITableViewCell from a XIB file. Everything is working fine, but my layout ... nmCard; return cell; } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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378 views
1 answer
iphone - iPad custom Keyboard GUI
    I want to create custom GUI for keyboard layout instead of normal layout. How can I achieve this? Can anyone ... view for same? Thanks, Jayesh See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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379 views
1 answer
iphone - Rendering a UIWebView into an ImageContext
    I am trying to capture the contents of a UIWebView including that which is not visible to the user. i ... the page retrieved through javascript. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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393 views
1 answer
iphone - Additional Icon in App Name/Lable
    How can I add an additional icon to the Name/Lable of app, just the like snapshot of my test device Home ... icon to App Name/Label. Thanks! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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472 views
1 answer
iphone - Determining Image Luminance/Brightness
    My iphone application captures the realtime data from camera using AVFoundation's AVCaptureSession. I'm able to access ... . Thanks in advance. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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442 views
1 answer
iphone - Are push notification tokens unique across all apps for a single device?
    I will have multiple applications on the app store and 1 urban airship account to send push notifications to ... architecture needs to change. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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483 views
1 answer
iphone - Changing the delete accessory view in a UITableViewCell
    Is it possible to change the view shown in response to a left to right "I want to delete ... the other UITableViewCell customisation options. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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434 views
1 answer
iphone - Using AVCaptureSession and AVAudioPlayer together
    I am able to record video and output the movie to a file correctly. However, I have a problem with video ... ]; [audioPlayer play]; } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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441 views
1 answer
iphone - ios how to capture a particular portion of screen
    I want to capture a particular portion of iPhone screen. I used UIGraphicsBeginImageContextWithOptions, but couldn't ... Please help me. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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399 views
1 answer
iphone - MPMoviePlayerController and HTTP Live Streaming
    every one. I'm trying to figure out how to play live stream using MPMoviePlayerController. For testing i'm using ... . Where is the problem? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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373 views
1 answer
iphone - Four point gradient in iOS
    I am planing to create a four point gradient, pictured below, by drawing two linear gradients via core graphics ... core graphics, or other? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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411 views
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iphone - NSCache is not evicting data
    NSCache is a rarely used tool which actually looks quite useful. I created a simple experiment to see how it ... error: can't allocate region See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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416 views
1 answer
iphone - willAnimateRotationToInterfaceOrientation not called on popViewControllerAnimated
    In the MainViewController I have to adjust some images on orientation change. Easy - just add the code to the ... wrong. What am I missing? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
368 views
1 answer
iphone - Circumvent screenshot for iOS 4
    I would like to clear a view before an application is switched away from, to change the launch image so that the ... a chance to clear the view. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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379 views
1 answer
iphone - Decode images in background thread?
    I have a background thread that loads images and displays them in the main thread. I?noticed ... expensive call to ImageIO_BGR_A_TO_RGB_A_8Bit. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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