Mobile Develop

 Try not to use Setimagebitmap or Setimageresource or Bitmapfactory.decoderesource to set a larger picture,Because these functions are finished decode, they end up with the Java layer's createbitmap, which consumes more memory.Therefore, instead of

Ashmem is the driver module that Android has added on Linux, which means that Android does not have the functionality of Linux.The Ashmem module is implemented at the kernel level and provides access interfaces at the runtime Library and application

Recently you're going to be safe with the Android platform, because you've never been in touch with the security of the platform, so start with the bottom-up security mechanism. It's always been the security of the Windows platform, there's little

app migration (app transfer): Migrate apps from one developer account to another. This article demonstrates the entire migration process, in order to facilitate the explanation, in the process, the app will be transferred out of the developer

The font for the status bar is black: uistatusbarstyledefaultThe font for the status bar is white: uistatusbarstylelightcontentFirst, in Info.plist, set the View controller-based status bar appearance to NOThe color of the status bar font is set

Original URL: http://lysongzi.com/2016/01/30/iOS-%E5%BB%B6%E8%BF%9F%E6%93%8D%E4%BD%9C%E6%96%B9%E6%B3%95%E6%80%BB%E7%BB%93/In practical applications, sometimes we need to delay some operations, so we summarize four methods of delaying operation, and

Original URL: http://blog.csdn.net/enuola/article/details/8099461Call the Timer method once:[CPP]View PlainCopy  MyTimer = [Nstimer scheduledtimerwithtimeinterval:1.5 target:self selector: @selector (Scrolltimer) Userinfo:nil Repeats:no];

Original URL: http://blog.csdn.net/tangshoulin/article/details/76441241. Initialization+ (Nstimer *) Timerwithtimeinterval: (nstimeinterval) TI target: (ID) atarget selector: (SEL) Aselector userInfo: (ID) UserInfo repeats: (BOOL) Yesorno;+ (Nstimer

Compiling is a Linux driver that consists of multiple files. For complex Linux drivers, it is necessary to use multiple source code files to store different function codes, which facilitates the classification and management of the code.Small

To give you a better understanding of how the Android system works, let's look at its system architecture first.Android can be roughly divided into four-tier architecture, five-block areas.1. Linux Kernel layerThe Android system is based on the

On the way to nsthred open multithreading-(void) Performselectorinbackground: (SEL) Aselector withobject: (ID) arg[Self Performselectorinbackground: @selector (dosomething) Withobject:nil];This method is to open another thread, which is used in the

This problem occurs mainly after 4.4, allowing the use of the immersive title bar after 4.4 or 4.4 without using the immersive title bar is no problem, so if your app uses an immersive title bar, and you need to enter content, you can use this

Because Gfw,android Studio is not downloaded can be used, the most common is the problem of Gradle, now put their own problems recorded, and then configure it directly to read the article can be1.gradle issue, download the latest gradle, then

Android broadcasts are divided into two categories:1. General broadcast, broadcast, broadcast after the issuance of all the conditions of the application can obtain the data in the broadcast, the disadvantage is that the application to obtain the

Recently with colleagues to do a sharing meeting, the theme is mobile front-end performance optimization, mainly share some of the methods to provide mobile page loading speed. Share the theme is colleagues want to explain the content is also

1. Android System Analysis2. Download the Android source code (excluding the Linux kernel section)Download the android_5.01.tar.gz, copy it to Ubuntu via Samba, and unzip it.You can see androidsrc/this folder, it is stored in the Android source code.

Package Newdemo.jeno.listviewdemo;Import android.app.Activity;Import Android.os.Bundle;Import Android.view.View;Import Android.view.ViewGroup;Import Android.widget.BaseAdapter;Import Android.widget.Button;Import Android.widget.EditText;Import

Development of Android, Java SDK and Android SDK are essential1. Installing the Java SDKHttp://www.oracle.com/technetwork/indexes/downloads/index.html650) this.width=650; "Src=" Http://s5.51cto.com/wyfs02/M01/83/02/wKioL1doqP-hAr09AAGgAcK3Hww352.png-

In iOS development, there are a variety of issues. Today, we summarize these common problems and the solutions of Daniel, so that we can easily check them later:Common errors:1. Linker command failed with exit code 1 (use-v to see):Http://www.reader8

With the development of wireless networks and smartphones, smartphones are becoming more and more closely connected with people's daily lives, entertainment, business applications, financial applications, traffic and various functions of the