Mobile Develop

Get member variables for a class (iOS)unsignedintNumivars;Ivar*vars = class_copyivarlist(nsclassfromstring(@ "TestView"), &numivars);NSString*key=Nil; for(inti = 0; i Ivar Thisivar = vars[i];key = [NSStringstringwithutf8string:Ivar_getname(Thisivar)

Android development often use a variety of listeners, Android Listener writing and Java have different places;Using an inner class to implement an interface in 1,activity, creating an internal class instance using the Add method is similar to

Write an algorithm to determine if a number is "happy".A happy number is a number defined by the following process:starting with any positive integer and replace the number by the Sum of the squares of its digits, and repeat the process until the

Cocoapods is an excellent iOS package management tool for managing third-party components, perfect for third-party library updates, inter-dependency relationships, and more. Refer to the Cocoapods home page.InstallationIt is more convenient to

Activity is a very mundane component of Android that we need to master in addition to the life cycle in activity.He set.Settings for themes in 1.activity in Android we can set the theme in the activity through androidmanifest.xml, in fact, Android

http://blog.csdn.net/shagoo/article/details/6709430> Development Environment1. Install Eclipse and ANDROID-SDK and unzip the installation2. Eclipse Install AVD plugin https://dl-ssl.google.com/android/eclipse/and configure SDK location3. Open SDK

The effect we want to achievePrepare the resource file to dropres/drawableIn the fileLight01.pngLight02.pngLight03.pngWriteloading.xmlPut inres/drawable animation-list xmlns:android="Http://schemas.android.com/apk/res/android"

#import#import#import "Reachability.h"@interfaceHttphelper:nsobject+ (BOOL) Networkisok;//Check if the network is available+ (void) Post: (NSString *) Url requestparams: (Nsdictionary *)paramsFinishblock: (void(^) (Nsurlresponse *response, NSData

Code:RelativelayoutAndroid:layout_width= "Match_parent"Android:layout_height= "130DP"android:orientation= "vertical" > ImageViewAndroid:id= "@+id/iv_1"Android:layout_width= "Match_parent"Android:layout_height=

To tidy up a bit collectionview:1.UICollectionViewLayoutUicollectionviewlayout can be said to be Uicollectionview's brain and center, which is responsible for organizing each cell, supplementary view and decoration views to set their own properties,

Menu SettingsCovers two methods Oncreateoptionsmenu (Menu menu), onoptionsitemselected (MenuItem Item)Oncreateoptionsmenu: Create a menu in this functionOnoptionsitemselected: Called when a menu is selected, using switch (Item.getitemid ()) to

In the actual development, I encountered two times android.app.fragment$instantiationexception error.One of the errors, according to the error message "Make sure class name exists, are public, and have an empty constructor that is public", if the

1. Take y length bytes starting at index x positionNSString * [email protected] "1234567890";NSString * Str1=[str substringwithrange:nsmakerange (x, y)];2. Requires an X-bit string, the currently obtained string y is not enough X-bit, in front of

What is DPI?DPI is the abbreviation for "dot per inch" and the number of pixels per inch.Four density classifications: ldpi (Low), MDPI (Medium), hdpi (High), and xhdpi (extra high)General screen: LDPI is 120,mdpi is 160,hdpi is 240,xhdpi is 320.The

Android clear Local data cache code caseDirectly on the code:/* * File Name: Datacleanmanager.java * Description: Main function is to clear the inside/out cache, clear the database, clear the sharedpreference, clear files and clear the custom

//buy demo inside, read the code and talk.classIaptestviewcontroller:uiviewcontroller, skproductsrequestdelegate, skpaymenttransactionobserver{let VERIFY_ Receipt_url="Https://buy.itunes.apple.com/verifyReceipt"Let

Kvo heard, before has been not how to use, recently used, and learned a bit.Demo: There are two Viewcontroller (A and B), b there is a timer and a button,b push to a,a TextView and label to show the value of str change in

Most applications typically choose the location of the cache as the/sdcard/android/data//cachepath.There are two benefits to choose from in this location:First, this is stored on the SD card, so even if more data is cached it will not have any

UIView provides this method:-(UIView *) HitTest: (cgpoint) point withevent: (Uievent *) event;1. Create CustomView inherit from UIView:CustomView.h@property (strong,nonatomic) nsarray * passthroughviews;@property (nonatomic) BOOL testhits;-(BOOL)

The internet is booming, and a generation of people has grown with it. They are "after 90", is the "Aboriginal" in the network age. They have their own culture, their own language, their own value system, their growth by the Internet throughout the