Download MonoTouch and monotouch
Application tried to present modally an active controller
1. AddGestureRecognizer adds an event to the image View
// Rounded Avatar _ avatarView = new UIImageView (new RectangleF (_ blockSpace, _ blockSpace, 2 * _
IOS learning 17th days of notes (operations on files in OC), ios 17th days
Knowledge points of IOS Learning (oc language)
I. Singleton Mode
1) Singleton is a programming idea. A design model is language-independent. In applications that use
18th-day notes (archiving and archiving operations) for IOS and 18th-day ios
Knowledge points of IOS Learning (oc language)
I. Archiving and archiving operations
1) Archiving is a process in which one or more objects are stored for future
19th-day notes (Protocol-protocol) and IOS-Protocol
Knowledge points of IOS Learning (oc language)
1. Introduction to Protocols1) concept: a protocol refers to an interface object negotiated between multiple objects. The Protocol provides some
Instancetype and id
1. Similarities
Can be used as the return type of the method.
2. Differences
Instancetype can return objects of the same type as the class of the method. id can only return unknown objects;
Instancetype can only be used
Two Methods for capturing video thumbnails in iOS
After you have finished playing an online video using MPMoviePlayerController, you may need to obtain a thumbnail of the video in practice. Let's take a look at how to take a thumbnail of the video
IOS animation implementation SummaryIn iOS, there are two types of animation implementation directions: one is the animation method that operates UIView, and the other is the core animation, but in iOS 7, UIView is also involved with core animations.
IOS-member center page and logic
Member Center interface:Different content is displayed based on the VIP status, and the button is set to jump to the payment page.
Code
/// MemberCenterViewController. h // SymptomChecker /// Created by C. l. wang
IOS development-custom multi-choice albumThe main idea of custom multi-choice album is to import the AssetsLibrary framework to obtain the resource group from the resource library [0]. filter the [1] photo and then display the group in the list.
IOS UITableView table view scroll hide UINavigationController navigation bar
UITableView inherits from UIScrollViewTherefore, the proxy method of UIScrollView is also applicable to UITableView.To hide the navigation bar, follow these steps:
Self.
For iOS, review contentSize, contentOffset, and contentInsetFor iOS, review contentSize, contentOffset, and contentInset
ContentSize is the area where scrollview can scroll. For example, frame = (0, 0,320,480) contentSize = (320,960) indicates that
Image loading problems with imageNamed,
We usually use imageNamed: To load images, but the problem with this API is that it caches the loaded images. Therefore, this API is very efficient for those reused images. However, for those images that
Brief Introduction to NSPredicate, nspredicateSeveral main calculation methods in NSPredicate
1. Comparison operators>, =, Example: @ "number> = 99"
2. logical operators: AND, OR, and not operators calculate AND, OR, AND non-results.
3. Range
IOS-use CoreLocation to get the current city
In the previous blog-CoreLocation-iOS location information, we briefly described the use of CoreLocation and obtained latitude and longitude information. next, we will reverse parse the current city and
IOS recording practices
In the AVFoundation framework, the AVAudioRecorder class specializes in recording operations and supports multiple audio formats. The following are common attributes and methods:
Attribute
Description
@
Simple use of multithreading and simple use of Multithreading
Simple use of NSOperationQueue:
1. Create an NSOperationQueue object
2. Create an NSOperation object
3. Add operation to NSOperationQueue
MRC needs to be manually released
4. release
IOS development UI basic UIView and iosuiuiview
This section mainly introduces the basic concepts of UIView and some attributes. The attribute users will be described in detail later.-Basic concepts of UIView 1. What is a control?
All the UI
16th-day notes (Category/NSSet/NSIndexSet operation), nssetnsindexset
Knowledge points of IOS Learning (oc language)
1. Introduction to NSSet and NSMutableSet
1) NSSet and NSMutableSet. elements are unordered and cannot have repeated values.
2
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