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 functionality to access the HTTP service below. The basic operations that use this part of the interface include:
Creating URLs and Urlconnection/httpurlconnection
In Android development we often use rounded heads, which are especially troublesome if you have to do a round cut after each load. So write a custom round imageview here, directly to load the network image, so it is particularly convenient.
First on the effect chart
The Main method
1. Let custom Circleimageview inherit ImageView
/**
* Custom round avatar
* Created by Dylan on 2015/11/26 0026.
*
As shown in the following figure, our Android5.0 co-ordination came out with one such icon, which is not the problem in other Android versions.
What about the Android 5.0 Network signal icon exclamation point?
First Download Repair tool http://pan.baidu.com/share/init?shareid=2377574099uk=3106229976 Network
Android learning 20 (using HTTP to access the network)
Use HttpURLConnection
There are two methods to send HTTP requests on Android: HttpURLConnection and HttpClient.HttpURLConnection usage.First, you need to obtain the HttpURLConnection instance. Generally, you only need to create a new URL object and input the address of the target
When doing an Android project, we often need to read a picture from a local or a network and convert it to a bitmap picture for use, and here's how to read the local picture and convert it: Java code
/** * Gets the absolute path to the local or network bitmap URL-network or local picture, such as: * A.
It's actually a bit of a hassle when it comes to displaying a picture of the Web in Android. First you have to convert this network image into a Java Imputstream stream, and then convert this to a bitmap.Bitmap can be passed as parameters to ImageView.
At the bottom of the Returnbitmap function is the core, but also can be reused, it is responsible for a URL of the net
Android development steps: 20: network settingsNetwork settings are very important in mobile apps, because applications generally need to interact with external networks. This article demonstrates a classic application scenario. For example, I recently developed a transfer application. This requires interaction with the network. After the user opens the applicati
As smartphones grow, the number of devices installed on the smart platform (Android, iOS) is also increasing rapidly. It brings great business opportunities to developers. Developers pay more attention to the android platform, which means that the support department must deal more with the system. technicians must migrate their existing experience to the new platform. In the traditional PCweb,
();
finally {if (bis!= null) {try {bis.close ();
catch (IOException e) {e.printstacktrace (); } if (RAF!= null) {try {RAF. Close ();
catch (IOException e) {e.printstacktrace ();
}}/** * thread file is downloaded/public boolean iscompleted () {return iscompleted;
/** * Thread Download file length */public int getdownloadlength () {return downloadlength; }
}
Effect Chart:
Log console:
You can see the total size of the file, the 5 threads we created, each interval responsible for do
Android learning notes: Use of the Andorid network request framework Volley (I)
The Volley framework was released at the Google I/O 2013 conference. Volley was born from Google's network communication library on the Android platform. This framework enables faster, simpler, and more robust
Simple IntroductionRead the in-depth understanding of Android network programming feels good. Today's Android network programming is a key record.ContentAndroid Web-based technology and programming practices
Points
Defined
Descriptive narrative
IP protocol
A data-oriented prot
In Android development, especially in development related to network access, you must determine whether the mobile phone is connected to the network. Is the following a clip that determines whether the mobile phone is connected to the network:
[Java]
View plaincopyprint?
Package cn.com. Karl. util;
Import com. k
Summary of Socket communication in Android Network Programming
Create a server:1. Specify a port to instantiate a ServerSocket
2. Call the accept method of ServerSocket to wait for blocking during connection.
3. Obtain the underlying Socket stream for read/write operations.
4. encapsulate data into a stream
5. Read and Write the Socket
6. Close the stream.
To create a client:
1. instantiate the Socket throu
Android Network request library volley method details, androidvolley
Using volley for network requests: you must first import the volley package to androidstudio.
Project Structrue under File, click the plus sign to export the package
Volley network request steps:
1. CREATE request queue RequestQueue queue = Volley.
mechanism of telephone system, security mechanism of SMS system, network Firewall system, file encryption system and other core technologies."Android Security and anti-compilation combat" for Android beginners, Android app developers, Android security architecture researche
Android Network Programming-data transfer to servers (1)
Android Network Programming-data transfer to servers (1)
Please respect others' labor achievements and repost the Source: transfer data from Android Network programming to
", data.length () + "");//post mode, in fact, the browser to the data to the server Conn.setdooutput (TRUE); Set the output stream outputstream OS = Conn.getoutputstream (); Gets the output stream Os.write (Data.getbytes ()); Write data to server int code = Conn.getresponsecode (); if (code = =) {InputStream is = Conn.getinputstream (); return STREAMTOOLS.S Treamtostring (IS);} else {return "network access Failed";}} catch (Exception e) {e.printstackt
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