Mobile Develop

Use Alasset to get thumbnails of pictures, generally have fuzzy problems[_imageview setimage:[uiimage ImageWithCGImage:asset.thumbnail];For this kind of problem, the more simple way to modify is to use[_imageview setimage:[uiimage

First import the Localauthentication frameworkThen import the header file#import -(void) beginauthentication{lacontext *context = [[Lacontext alloc] init]; Nserror *eror = nil; NSString *reson = @ "fingerprint identification"; if ([Context

1. DocumentsCMD + N: New fileCMD + SHIFT + N: New ItemCMD + O: OpenCMD + S: SaveCmd+opt+s: Save All FilesCMD + SHIFT + S: Save AsCMD + W: Close windowCMD + Q: Exit XcodeCMD + SHIFT + W: Close file2. EditingCMD + [: Left IndentCMD +]: Right IndentCmd+

Many apps encounter several common performance issues:Slow start-up speed, slow interface jump, slow event response, slippage and animation lag.First, start speed optimization.To optimize the initialization of the task:1. Lazy-loading initialization

The Android layout is divided into five main categories: relative layout, linear layout, table layout, frame layout, grid layoutRelative layoutSyntax format:Xmlns:android= "Http://schemas.android.com/apk/res/android"Xmls:tools= ""

Use style to replace background to prevent activity from flashing on black background 1. The original layout"Http://schemas.android.com/apk/res/android" android:layout_width= "match_parent" Android:layout_height= "match_parent"

Transferred from: http://www.cocoachina.com/ios/20141104/10124.htmliOS enables graphical programming with three APIs (UIKIT, Core graphics, OpenGL es, and Glkit).These APIs contain drawing operations that are drawn in a graphical environment. A

This is a regular expression to check the mobile phone number, collected from Suntech a H5 page var PhoneNumber = $ ("#phoneNumber"). Val (); var type =/^ (0|86|17951)? (13[0-9]|15[012356789]|17[0678]|18[0-9]|14[57]) [0-9] {8}$/; var re =

Method One:- (void) startcountdown{_seconds= -; NSString*STR = [NSString stringWithFormat:@"available for re-acquisition after%d seconds", _seconds]; [_btnverify settitle:str forstate:uicontrolstatedisabled]; [_btnverify.titlelabel

I. Bitmap INTRODUCTION 1. Image Usage Scenarios 1) Effect class2) Non-visible component image comparison3) Failures and exceptions4) Using the image to judge the component 2. Some API simple description Api

Android.permission.access_checkin_properties//agreed to read and write access to the "PROPERTIES" table in the CHECKIN database. Change the value can be changed upload android.permission.access_coarse_location//agree to a program to access Cellid or

Download Lofter ClientAn analysis of IOS HTTP breakpoint continuous transmissionThe key to HTTP implementation of a breakpoint is to add a "Range" header to the HttpRequest.Set range header, value: bytes=x-y;x: Start Byte, y: End byte, not specified

Why use asynchronous Tasks?In Android, only the main thread can update the UI, while other threads cannot manipulate the UI directlyAndroid itself is a multi-threaded operating system, we can not put all the operations in the main thread, such as

In the design idea of Android, in order to ensure the user smooth operation experience. Some time-consuming tasks cannot be run in the UI thread, such as accessing the network. So we have to re-open a background thread to run these tasks. However,

My test results:Picture occupies memory picture size . png File size 1MB 512*512 316KB4MB 1024*1024 940KB16MB 2048*2048 2.5MB1.11MB 512*568693KB 320*568 186KB2.773MB 640*1136 664KB6.240MB 960*1704 1.1MBFrom the above test data can be concluded

1. Javase logs are usually printed in the console console, but the android system is Linux It is impossible to print the logs to the console under Windows, requiring an interface thatlogcat can put android Log buffer information Inside Out,cmd

The layout is as Follows: (focus on local NOTIFICATIONS)Daily Update Attention :http://weibo.com/hanjunqiang Sina WeiboNotification It is a very common mechanism of transmitting information in the application programming of smart phone, and it can

1. Recovery function:#defineUPDATE_TITLE "--update_package=" #define Update_command_file "/cache/recovery/command" #define Update_flag_ FILE "/cache/recovery/last_flag" #define Last_install_file "/cache/recovery/last_install" #define Last_log_file "/

Category: C #, Android, VS2015;Date created: 2016-02-27 I. INTRODUCTIONInternal storage refers to the private files that are created by the application are stored in internal storage (the smaller mobile phone card sold by the mobility

Our business code is typically placed under a new package, and this business class cannot be accessed by right-clicking the run as Java application, because android projects can only be run on the phone Dalvak inside the virtual machineCreate a new