Mobile Develop

1, enter cmd into the DOS interface, enter the Android-sdk-windows\platform-tools directory, execute the following command start adb start-server The following error occurred * Daemon not running. Starting it now on Port 5037 * ADB server didn ' t

Image ioincubation period worth thinking about -Kevin Passat In the 13th chapter, "Efficient drawing," we studied the performance issues associated with core graphics drawings and how to fix them. Closely related to drawing performance is image

First we see from init.c that when the init.rc file is parsed in Init, a series of actions are obtained, and some functions are called by action.Zygote is in the service section of Init.rc service zygote /system

Because the virtual memory system in iOS does not take the form of page substitution to get the request memory, instead it frees up some memory resources by removing the strong references in the application, we know that the strong references in iOS

iOS Build standard annotation tool--vvdocumenterin the process of development, we have to write a lot of comments, easy to help others also convenient for us to check our code later. However, writing a comment is a waste of our time and energy, to

Create an. h fileMethod.h#ifndef Nonatomictest_method_h#define Nonatomictest_method_h#import c function Implementation return value type function name function parameter (is a block)CGFloat bnrtimeblock (void (^block) (void))

Introduction: The project requires a statistical analysis of button click events, and now the project is to add a click event in the response code of the button, very cumbersome. Therefore, the use of AOP (aspect-oriented programming), the

#import "ViewController.h"#import #import //To use the statistics program execution time function, the header file that must be imported#import @interface Viewcontroller ()@property (nonatomic,copy) NSString *nonatomictest;@property (atomic,copy)

Sending an HTTP GET request via Nsurlconnection//send a GET request to server with some params-(void) httpgetwithparams{NSString*urlstring =@"http://chaoyuan.sinaapp.com"; URLString= [URLString stringbyappendingstring:@"? p=1059"]; Nsurl*url =[Nsurl

Implementation method: 1) through Broadcastreceiver receive broadcast intent.action_screen_on and Intent.action_screen_off can determine whether the screen State lock screen, but only when the screen status changes will be issued broadcast ；2) If

Android studio2013 was launched by Google for Android development, and I used the version for the May 2015 launch of 1.3.2.1. Install, configure. As a muggle, I have just touched Android studio in the installation of a lot of detours, summarized

1. About Code SpecificationsIf you want to use lazy loading,// Lazy Loading -(Cadisplaylink *) displaylink{ if (! _displaylink) { = [cadisplaylink displaylinkwithtarget:self selector: @selector (tododrawline)]; 3 ; } return

　　Shell for the PC end plus decryption experience is not unfamiliar, the Android world Shell is the same existence (why should have shell here is not described). Look (exe = DEX):　　The concept is clear, we will say: Shell the most essential function

iOS development often use the input box, by default, click on the input box will pop up the keyboard, but you must implement the input box to return the delegate method to cancel the keyboard display, for the user experience is very unfriendly, we

Since these two days in doing the ListView thing, so sort out some of my personal think more special properties, by setting such a property can make a more beautiful listThe first is the stackfrombottom Property , which is only after the list that

Many people on the blog and consulted on my iOS development how to improve, after some thinking, I can think of some of the following improvements, I personally also through these methods to improve.Read the BlogIn this era of fragmented reading,

Some uses of download① for small files, can be downloaded directly, no need to download breakpoints, such as processing.1-(void) clickdownbtn{2Nsurl *url = [Nsurl urlwithstring:@"https://picjumbo.imgix.net/HNCK8461.jpg?q=40&w=1650&sharp=30"];3

The whole process is tedious and summarizes. Sign up for Apple Developer account, make a 99$ and so on (don't know Baidu Google go to it) I need an Apple Mac, I really don't have a virtual machine. Virtual Machine Install Mac system

I. Overview of Tablelayout　The Tablelayout table layout model manages child controls in the form of rows and columns, each of which behaves as a TableRow object, or it can be a view objectSecond, the global properties of Tablelayout　 1,

*res/raw and assets the same point:1. Files in both folders will be stored intact in the APK package after packaging, and will not be compiled into binary.Different points of *res/raw and assets:The files in the 1.res/raw are mapped to the R.java