Recent questions tagged iPhone

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iphone - How to Maintain VOIP socket connection in background?

My App Requirement: I should maintain a socket connection to trigger local notification on server push without ... work as per expectation? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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415 views

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iphone - Adding Images to UIActionSheet buttons as in UIDocumentInteractionController

Is it possible to add an image to the buttons of the UIActionSheet as seen in UIDocumentInteractionController? If so, ... know how it is done. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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406 views

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iphone - Is it possible for a UIWebView to save and autofill previously entered form values (e.g., username & password)?

I'm building an iPhone app that is just a UIWebView of an existing mobile site that has a form-based ... > and #import "SFHFKeychainUtils.h" See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - How to implement didReceiveMemoryWarning?

I have developed a simple location aware iPhone application which is functionally working very well to our expectations ... problem . thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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662 views

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iphone - Alignment UIImageView with Aspect Fit

for my UIImageView I choose Aspect Fit (InterfaceBuilder) but how can I change the vertical alignment? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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413 views

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iphone - self.title sets navigationController and tabBarItem's title? Why?

I do this in a UIViewController for one of my tabs: self.title = @"Welcome"; However, it's overwriting ... or initWithTitle doesn't do anything? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - List saved files in iOS documents directory in a UITableView?

I have set up the following code to save a file to the documents directory: NSLog(@"Saving File..."); NSURLRequest ... .png? How can I do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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400 views

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iphone - Core Data's NSPrivateQueueConcurrencyType and sharing objects between threads

iOS 5 introduced a new way to quickly fetch data on a background thread by initializing the MOC using ... IDs to do that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - Analysing Assets.car file in iOS

I have trying to reduce the overall size of my iOS application which is currently 48MB. When I analyze sub ... how to view the contents? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - Suppressing deprecated warnings in Xcode

With all the SDKs floating around, it's handy to be able to build for multiple SDKs and platforms. However, ... off or disable these warnings? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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395 views

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iphone - How to remove an iOS app from the App Store

I want to remove my app, which is currently marked "Ready for sale", from the App Store. I could not find ... remove my app from the App Store? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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432 views

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iphone - UIImageView Gestures (Zoom, Rotate) Question

I would like to make 2 operations to an UIImageView zoom, rotate, I have 2 problems: A. I make an operation ... += rotation; } } Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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390 views

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iphone - how to increase font size in UIWebView

how to increase or decrease the UIWebview font size, not using scalePageToFit:NO; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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338 views

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iphone - How to pin the Public key of a certificate on iOS

While improving the security of an iOS application that we are developing, we found the need to PIN (the entire or ... But how do you do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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877 views

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iphone - Drop Shadow on UITextField text

Is it possible to add a shadow to the text in a UITextField? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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409 views

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iphone - What's the difference between using CGFloat and float?

I tend to use CGFloat all over the place, but I wonder if I get a senseless "performance hit" with ... and what makes really the difference? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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359 views

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iphone - What is the best way to create a shadow behind a UIImageView

I have a UIImageView that I want to add a shadow behind. I wish that apple had that as a property but they ... so I need to ask this question. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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413 views

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iphone - AVPlayer streaming progress

I'm successfully using AVPlayer to stream audio from a server and what I want to do now is to show a ... There's any workarounds for this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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389 views

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iphone - How to unit test asynchronous APIs?

I have installed Google Toolbox for Mac into Xcode and followed the instructions to set up unit testing found here. It ... @"Getting token"); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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322 views

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iphone - Moving status bar in iOS 7

The problem I'm facing is this: I want to implement an iOS 7 app with nice design and left/right menu, ... Does anybody knows how to? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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400 views

1 answer

iphone - iOS Autolayout: two buttons of equal width, side by side

I am currently having difficulty with AutoLayout. I am using interface builder and am trying to position two ... opposed to additional code. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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340 views

1 answer

iphone - Is there any way to see the file system on the iOS simulator?

Is there any way to browse the file system of a currently running or just killed iOS simulator? I'd settle for ... open the files in the Finder. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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477 views

1 answer

iphone - How can I open a Twitter tweet using the native Twitter app on iOS?

A tweet can be opened by Safari with a link of this format: http://twitter.com/1Direction_X/statuses/ ... app called from my app? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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623 views

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iphone - How to center a subview of UIView

I have a UIView inside a UIViewm and I want the inner UIView to be always centered inside the outer one, without ... doesn't center. Any idea? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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416 views

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iphone - What is the maximum length of a Push Notification alert text?

What is the maximum length of the alert text of an iOS push notification? The documentation states that the ... limit for the alert text. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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491 views

1 answer

iphone - Best practices for in-app database migration for Sqlite

I am using sqlite for my iphone and I anticipate the database schema might change over time. What are the gotchas, ... name (e.g. Database_v1). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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476 views

1 answer

iphone - Is it possible to disable the network in iOS Simulator?

I am trying to debug some inconsistent behaviour I am seeing in an application that gets its primary data from the ... network isn't an option). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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408 views

1 answer

iphone - Sound overlapping with multiple button presses

When I press a button, then press another one, the sounds overlap. How can I fix that so the first sound stops ... play]; [theAudio release]; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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