IOS TableView performance Optimization and analysis

1. The most common use is cell reuse, registration reuse identifierEach time you swipe the cell, you need to go to the cache pool to find a cell that can be recycled, and if not, recreate the cell2. Reduce the number of controls in the cellThe View

There are two ways to reuse cells in Ios-uitableview

There are two ways to reuse cells in UITableView:iOS code-(ID) Dequeuereusablecellwithidentifier: (NSString *) identifier; -(ID) Dequeuereusablecellwithidentifier: (NSString *) identifier Forindexpath: (Nsindexpath *) Indexpath Ns_ Available_ios (6

Appium Automation Test (6) Appium server initialization parameter settings

Desired capabilitiesDesired capabilities is a collection of key-value pairs sent to the Appium server (such as a map or hash) that tells the server what type of automation session we want to start. There are also various capabilities that can modify

Graduation design experience and finishing-app-theme switch

1. Define the body color:Three properties are customized in style:They are not Android free properties, they are my custom properties. Their definition is written in attrs.xml.Once defined here, it can be used directly in XML, just a reference to it.

iOS Development--tableview Refresh a zone and a row

In development, sometimes, we do not need to refresh the entire table, just need to refresh the local data, the code is as follows:// Section Refresh Nsindexset *indexset=[[nsindexset Alloc]initwithindex:2]; [TableView Reloadsections:indexset

Vue+axios cross-Domain resolution method

Cross-domain issues can also be addressed through this approach.Use Http-proxy-middleware Agent solution (project using VUE-CLI scaffolding construction)For example, the requested URL: "Http://f.apiplus.cn/bj11x5.json"1. Open Config/index.js, add

Mobile-side events

Three major events on the mobile side:Press the finger:OntouchstartFinger movement:OntouchmoveFinger Lift:Ontouchend"Div1"> Events on the PC are slightly slower than the events on the mobile side, about 300ms.Mobile-side events

Apply bind call and this

The This in JavaScript is determined by the way it is called.1. FunctionsThis is the window function log () { console.log (this); } Log ();2. Object methodsThis is the instance object. function log ()

ANDROID_ (message tip) multiple message hints for using toast

A toast is a view that provides information about a user and can create and display a message that is presented to the user as it floats above the application. because it does not get the focus, even if the user is entering nothing will be affected .

Move disk parameter error how do you do it?

Parameter error indicates that the file system structure of this disk is damaged. In peacetime if the data is not important, then the direct format can be used. But sometimes the data inside is very important, then you have to restore the data

Shanghai Apple repair Point share Apple MacBook Fault repair common cases

Apple's electronic devices, both in appearance and performance, are unmatched in beauty, and many developers are beginning to choose Apple MacBook. In recent years Apple's aftermarket repair point to repair Apple Computer users are also more and

Android APK anti-compilation is so simple and detailed

In learning the process of Android development you, you tend to learn how other people's application is developed, those beautiful animations and exquisite layout may let you put it down, as a developer, you may want to know how these effects

No scroll bar solution for Apple machine

Sometimes we move the end, Andro can display the scroll bar, and can slide, but the Apple machine does not have the scroll bar, and cannot slide, the nonsense does not say much, directly on the code-webkit-overflow-scrolling:touch; No scroll bar

Events (Application event)

Spring Events (Appllcation event) provide support for message communication between beans and beans. When a bean finishes a task, it wants another bean to know and handle it, which allows another bean to listen for events sent by the current beanThe

iOS Design Annotation processing method

If the design only gives 3x design drawingsThere are several ways to handle a 2x adaptation : According to the logical pixel, the size does not change, for example 3x mobile phone on a diagram of the logical pixel set to 24x24point, then

Ios-oc, Swift mixed bridge file

Create a new OC language project, and then add a NSObject-based Swift file Swiftfilemodel class. SwiftImport UIKit class Swiftfilemodel:nsobject {func firstmethod () {print ("swiftfilemodel");}}You will be prompted to add a bridging file, click

2nd Pit: Global profile App.json Common error Rollup

"I Am the Pit":The global profile App.json is prone to errors such as the following: An error occurred in the file path. The page is not configured on pages. Code comments. Use single quotation marks. 1. File path error

Five-step App Festival Theme design: take lofter New Year icon design as an example

We need to do a basis, logical, conceptual design, the need for divergent thinking, integration of creative, rigorous output, so that the design can withstand scrutinyObjective?2018 Spring Festival has gone away, has been trying to lofter New Year

Second Fiddler configuration _ Browser & mobile phone

Is it fiddler?In the development and testing of network project, Fiddler is a powerful grasping package tool, its principle is to work in the form of Web proxy server, can be said to be a very common tool at hand, this article on Fiddler use and

Mobile Phone-side page Common points

1. Dial Calls from Android and mobile phones can be recalled2. Click Copy phone number// let Text = document.createelement (' input '); // document.body.appendChild (text); // text.value = this.phonenumber; Let text =

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