iOS Development Basics-Categories, categories

Category (classification, category) The classification can only increase the method cannot increase the member variable, can declare the property, actually generates the property's set and get method, but does not produce the underlined member

Common ways for IOS app data storage

In IOS development, there is often a need to store data locally. For example, some data cache, or record the user's account password, record the next time whether or not to log in, etc., these need to log data to local. There are three common ways

Android Composite Control

I. Composite control Topbar Creating a composite control is a good way to create a collection of controls with reusable functionality. Like Topbar. Practice: You generally need to inherit viewgroup, and then add the controls that specify the

Trapping Rain Water

Given n non-negative integers representing an elevation map where the width of each bar are 1, compute how much WA ter It is the able to trap after raining.For example,Given [0,1,0,2,1,0,1,3,2,1,2,1] , return 6 .The above elevation map is

Custom view (small balls move with your finger)

Import Android.content.Context;Import Android.graphics.Canvas;Import Android.graphics.Color;Import Android.graphics.Paint;Import android.provider.ContactsContract.CommonDataKinds.Event;Import Android.util.AttributeSet;Import android.view.MotionEvent;

keymob--Efficient Mobile Advertising platform

Keymob's greatest center of gravity is the simplicity and convenience of ad management, which can help developers use the least amount of time to manage their ads while bringing the highest advertising revenue.Specific to the provision of services,

Android_studio and SDK Download

Android Studio includes all the tools are need to build apps for Android.DOWNLOAD ANDROID STUDIO 2.0For WINDOWS (1166 MB) version:2.0.0.20 RELEASE Date:april 7, 2016 Android Studio 2.0 download-from dl. GoogleAndroid Studio 2.0

The Ratingbar in the ListView contained in Android cannot respond to click events

With Ratingbar (custom icon) in the ListView, the ListView cannot respond to its own click event Onitemclicklistener. What about this?You only need to set the android:isindicator of Ratingbar in the layout file to False, which means that the

iOS Development Database Chapter---"SQLite common statements"

/* Simple constraint */CREATE TABLE IF not EXISTS t_student (ID integer PRIMARY KEY autoincrement, name TEXT, age INTEGER);CREATE TABLE IF not EXISTS t_student (ID integer PRIMARY KEY autoincrement, name TEXT NOT NULL, age INTEGER not NULL);CREATE

Android Event Distribution

1. OverviewClicking on a control first invokes the activity's Dispatchtouchevent method and passes through the window to the layout that Decorview eventually passes to us, and if the event is not intercepted, Find the corresponding control that was

iOS development empty array correct method

Nsarray and Nsmutablearray are two arrays in OBJC (immutable and mutable arrays),In the daily development, often encounter the need to empty the array of circumstances, many people subconsciously think of nil This method, here is not advocated.

iOS button tag

When writing a project, the for loop creates multiple buttons, where the background picture needs to be set and the needs of the selected button need to be marked,There are two methods available here:One:1: All the buttons created for the For loop

Do you really know about iOS proxy design patterns?

How messages are delivered in the OSThere are many types of messaging in iOS, so here's a quick introduction to the various ways to deliver messages. Notifications: Message reception and message broadcast in iOS by notification hubs is a

HTML5 Formdata upload for app side

functionUploadFile () {if((document.getElementById ("file"). files[0].size/1024). toFixed (2) > 2048) {alert (' Photos cannot be greater than 2m! ‘); }Else{ varOldpic = $ ("#picurl"). Val (); varurl = ""; if(Oldpic! = "") {URL=

Go: iOS animations

iOS animationsOriginal link: http://www.cnblogs.com/zzuliliu/p/5468732.htmlThis article mainly explains the use of animations in iOS.1, Core Animation, key animation.The core animation process is performed in the background, and does not block the

How to implement iOS hot update

Recently by the Apple Audit, every commit version has to wait a week to two weeks of audit time, I can't stand this speed, so decided to study there is no other way to skip the commit version of this step, the same can fix the bug, so I found the

VMware adds Apple Mac OS X type operating system support

If you want to install an Apple Mac OS X virtual machine using VMware, first add the Apple Mac OS X type operating system support, here is a tool: unlocker-all-v207, can be downloaded from the following

IOS Enterprise Edition Packaging

IOS Enterprise Edition PackagingUsing the IOS Enterprise Certificate Publishing app, you can skip AppStore, publish directly to your website, and let others download and install it on your website, but only if you want to use the apple-brought

Edit in Firefox page can be viewed in mobile phone format

1. Modify User-agentInstall plugins like Chrome to modify User-agent methods, search Wmlbrowser, XHTML Mobile profile, and user Agent switcher three plugins(Right click on the Chrome browser icon on the desktop, select "Copy" in the Popup

Android camera call and storage details

File Outputimage;Private ImageView IV;public static final int take_photo = 1;public static final int crop_photo = 2;Private Uri Imageuri;Private String Path = Environment.getexternalstoragedirectory (). GetAbsolutePath ();Private String

Total Pages: 5220 1 .... 2528 2529 2530 2531 2532 .... 5220 Go to: GO

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.