Mobile Develop

preferencecategoryAssuming there are multiple preference, we want to be able to organize them together. There are two ways in which we use preferencescreen to nest in composite preference, or to place the same preferencescreen side by side, in a way

in the development of the application, there is a feature is very common, that is, quickly double-click the Return button, and then realize the function of exiting activity. I read a lot of information on the Internet code, summed up, there are two

Memory: Divided into five regions The stack area-----------system allocations and reclaims memory. The variables created in the function body exist in the stack area Heap areas are------------allocated and recycled by users, and if a

1. Multiple images can be stacked in order2. Create an XML file under Drawable list xmlns:android= "http// Schemas.android.com/apk/res/android "> android:drawable=" @drawable/faceback "/>

The latest release of the ArcGIS Runtime SDKs v10.2.4 includes: Android, IOS, OS x, and. NET four platforms, where users and developers can log in to the ESRI developer website to download the latest SDK installation package, or download it via the

1. Obfuscation Overview The obfuscation works by removing unused code and renaming classes, fields, and methods with obscure names, compressing, optimizing, and confusing the code, and generating a smaller. apk file, which is more difficult

Use the DatePicker (date selector) and Timepicker (Time picker) provided by the Android app framework to implement a date-time selector.Dialog content layout file (date_time_dialog.xml):Android:layout_width= "Fill_parent"Android:layout_height= "Fill_

BlurSince the iOS system introduced the Blur effect, that is, the so-called frosted glass, blur effect, matte effect, the big system began to race to imitate, this is a kind of effect, we now look at some diagram:These are typical blur effects, and

If you have many controls in your project that use the same style, you can set the style to the system for convenience, which is a lot easier to use.Here's how to customize the style template.1. Add the style content you want to set in the Style.xml

1. PrefaceNext: ios-How to convert a non-ARC project into an arc project (actual combat)2. Memory-management-related configurationWhen we manage the non-arc memory management, we find that when doing some operations memory is still slowly increased

First, how to store the Android data:The Android system offers a total of four data storage options. are: Sharepreference, SQLite, Content provider, and file; There is also a network store. Because the data is basically private in the Android system,

Android reads the contents of the Assets folderAssets folder is a directory in the Android program to store relevant external files, Android has provided the appropriate way to access the contents of the folder, so we do not need to carry out the

1. Add an underscore to the UilabelUILabel *label = [[UILabel alloc] Initwithframe:cgrectmake (0, -, -, -)]; Label.backgroundcolor=[Uicolor Redcolor]; Label.numberoflines=3; Nsmutableattributedstring*content = [[Nsmutableattributedstring

In iOS development process, in order to ensure the security of data, we usually have to take some encryption methods, common encryption has Base64 encryption and MD5 encryption. BASE64 encryption is reversible, MD5 encryption is generally

"Reprint" The advantages and disadvantages of DELEGATE,NOTIFICATION,KVO three modes in iOS for communicationOriginal address:http://blog.csdn.net/yangxt/article/details/8176636In developing iOS, there are three modes for communicating between

The following content mainly to the general developers how to use the Baidu Map Android SDK to build a most basic map application!The first step is to create an Android project and import the development package of the Baidu Maps Android SDK into

Just a few, Cordova.js defined 17 modules, the following slowly look at the 17 modules.First look at the more independent modules, some tool modules.1. Cordova/urlutilThe object of the module output contains a method Makeabsolute, which translates

Android Gets the frame data for an app:Description(Open the Mobile developer option-GPU Display profile (shown on ADB shell Dumpsys gfxinfo) hook, only more than 4.1 support)In android4.1, Google provides a tool called "GPU Rendering Mode analysis

Attempts to appiumdriver various findelement methods, the target application of which is the SDK comes with the Notepad application.1. findElementByName1.1 Example el = Driver.findelementbyname ("Add note"); Assertthat (El.gettext (),

1. including JavaScript files in the element is a traditional approach. However, according to Yahoo! "80% of the end-user response time on the front-end," said, most of these events are spent on the download of assets, such as stylesheets, pictures,