Android

In Android, there are several ways to achieve network programming: Create a URL and use the Urlconnection/httpurlconnection Using HttpClientUsing WebView Create a URL and use the Urlconnection/httpurlconnection JAVA.NET.* provides the basic

Why do I need picture caching Android defaults to allocating 16M of memory to each application, so if you load too many pictures, you should cache the images to prevent memory overflow. The three-level cache of pictures is: Memory Cache

Binder communication mechanism is simple, but in the use of the process encountered a number of problems, finally resolved, in this summary, together to share with you: 1, to use binder communication, first to define the interface, and then

Automatic screen brightness adjustment :Mainly from the sensor analysis of the separation of light ray sensors, therefore, the analysis of the automatic adjustment of the screen brightness (mobile phone with the intensity of the light

Import Zxing.jar package on Android, always error: Could not find class ' Com.google.zxing.MultiFormatWriter ' and referenced from method Com.changyang.app.util.Encode2dUtil.creat2DCode the solution was later found : Prior to the release of Adt17,

first, the basic introduction Android is highly recommended for parsing XML in Xmlpull mode. Xmlpull not only can be used on Android as well as Javase, but in javase environments it is necessary to get the Xmlpull-dependent class library, Kxml2-2.3.

I. Basic Concepts Save a file in an Android application and save it in two places ① mobile phone with the storage space, small (such as 200M), suitable for saving some small files, Android save location in the data/data/application package

You are welcome to learn this section and we have learned several other custom controls in the previous sections. is the andriod of the custom control and the creation of the Andriod custom control. Composite controls that can be reused the students

When we look at the photo album on the phone, we first see the grid-like image display interface, and then we choose the photos that we want to enjoy, so we can see the picture in full screen, and we can toggle the picture by sliding right and left.

Earlier on how to implement screen page switching, wrote a blog post "Android using Viewflipper to achieve screen switching," compared to viewflipper,viewpager more complex view switching, and Viewpager have their own adapter, This also lets it

Android Hybrid Animation In Android development, we will often use animation, but a simple animation (such as rotation, zoom, gradient, displacement, etc.) sometimes does not meet the requirements of our project, this time need to apply to the

1, Pull overview The Android system is ORG.XMLPULL.V1 to create XML-related packages, which not only provide XmlSerializerfor creating XML, It also provides a pull-mode parser for parsing XML Xmlpullparser Instead of extracting XML events like

This example for you to share the Android micro-credit payment to obtain two signed sign method for your reference, the specific content as follows /** * Get Sign Signature * * @return/private String Genpayreq () {//Get the value of the

Due to the recent project busy, blog has no time to update, today a little time on the continuous update two bar, too enjoyable. This picture drag and drop scaling is also I used in the project, today to tidy up, will be the source of dedication to

This article summarizes a section of Android to get the call time program code, the need for friends to refer to. We know that the phone length of the Android system should be callog, so it is advisable to check contactprovider, or Telephonyprovider

Fragmentmanager In order to manage fragments in activity, you need to use Fragmentmanager. To get it, you need to invoke the Getfragmentmanager () method in the activity. Because the API for Fragmentmanager is introduced in Android 3.0, API level 11

1.sax mode Copy Code code as follows: /** * Using SAX parsing */ public class saxparse{ /** * SAX Parser */ Private SAXParser parser; Public Saxparse () { try { SAXParserFactory f = saxparserfactory.newinstance (); Parser = F.

Android percent layout 1. Introduction: Compile ' com.android.support:percent:24.0.0 ' 2. Point source code can be seen, there are mainly two layout classes Percentframelayout and Percentrelativelayout, a tool class Percentlayouthelper. 3. Point

First, the MVP introduction As the functionality of the UI creation technology grows, the UI layer also performs more and more responsibilities. In order to better subdivide view and model function, let view focus on processing data visualization

Three ways to get Linearinflater A. Layoutinflater Inflater = Getlayoutinflater (); B. layoutinflater Localinflater = (Layoutinflater) Context.getsystemservice(Context.layout_inflater_service); C. layoutinflater Inflater = layoutinflater.from