iOS 7 like semi transparent blurred view [duplicate] - iphone

This question already has answers here:
How can I produce an effect similar to the iOS 7 blur view?
(12 answers)
iOS 7 dynamic blur effect like in Control Center
(6 answers)
Closed 9 years ago.
I'm trying to put a semi transparent image with blur effect behind my main view, similar to how Apple is doing in iOS 7. What is the best, most efficient way of going about this sort of effect?

This is the best one I've come across: FXBlurView

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Closed 5 years ago.
It is possible to change webView background to transparent color?
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iOS 7: Is it possible to make UIView's background transparent to show the blurred background? [duplicate]

This question already has answers here:
How to set all the backgrounds transparent so that the home screen could be seen?
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Closed 9 years ago.
I ask this question after seeing apps like Reminders or Safari's tab view using this.
As you can see there is a translucency between the app and the home screen. Is there anyway to achieve this in iOS 7? Is it a private api?
No such luck sadly - it's a private API.

how to do signature in iphone app using a textfield [duplicate]

This question already has answers here:
IOS: draw a line with your finger
(1 answer)
Capturing signatures in an iOS app
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Closed 9 years ago.
I have app in which i want that user sign the signature for contract as we normmally sign on paper so is there any way we can implement that signature user can do with finger as we normally do in documents.
You should do with the basic drawing feature available in iOS using
CGContextAddQuadCurveToPoint
Then take the image and then add to the field. Its good to have an ImageView on the place where you want to sign the same.

How to lock the iPhone screen programmatically? [duplicate]

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Programmatically lock and unlock iPhone screen
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Closed 9 years ago.
How can my iOS program lock the iPhone's screen?
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How to overlay an image on camera view for iPhone? [duplicate]

This question already has an answer here:
Ios creating simple camera overlay in Xcode how?
(1 answer)
Closed 5 years ago.
I am new to iphone development, and I want to make an application that will use the camera view as the background. Then I would like to put certain image overlays over the camera view. How would I go about doing this?
Use cameraOverlayView property when using UIImagePickerControllerSourceTypeCamera. This property is not available when using other sourceTypes though.
[picker setCameraOverlayView: someTransparentView];