There are also a lot of articles on this aspect on the Internet. The basic idea is to solve this problem through thread + cache. Some optimizations are proposed below:
1. Use a thread pool
2. Memory Cache + File Cache
3. In the memory cache, softreference is often used on the network to prevent heap overflow. The strict limit here is that only 1/4 of the maximum JVM memory can be used.
4. Scale the downloaded image proportionally to reduce memory cons
, and the client may behave differently during deep sleep (wake lock, Alarm, WiFi switch). )Also recommended Betterbatterystat http://forum.xda-developers.com/showthread.php?t=1179809-Take out the bagafter the capture, because the file is written through the root account, Windows can not see, the MAC itself is not supported, so stop back to the system shellADB pull/sdcard/tmp.pcap.four, real-time view grab bagShare the heat, 360 mobile WiFi can do, but there are problems:1. WiFi Internet Only2.
Android JSON for network data exchangeWhat is JSON (JavaScript Object Notation) is a lightweight data exchange format, which is easy to read and write, and easy to parse and generate by machines. It is very suitable for the interaction between servers and clients. JSON uses a text format unrelated to the programming language, but also uses the C-like language. These features make JSON an ideal data exchange
Android Network Programming-using HttpClient to batch upload files (2) AsyncTask + HttpClient and implement upload progress listening
Please respect the fruits of others' work, and repost them with the source:Android Network Programming-using HttpClient to batch upload files (2) AsyncTask + HttpClient and implement upload progress listening
Run:
I once introdu
The preface is actually very lucky. After one week of employment, I will be able to develop android with two senior brothers, both of whom are great gods. As a little white, I can only learn more and work harder. I have been busy for some time and have no chance to summarize it. Today I just completed the asynchronous loading of android client images. Here I will record it (ps: Actually, I will refer to the
Due to the needs of a project, I studied the network communication mode of android, which is similar to that of the java platform!
The android platform also provides a lot of APIS for developers to use. Please refer to the figure below:
First, we will introduce the communication through the http packet tool in two ways: get and post. The difference between the
, there is no difference between the test and the formal one. Use global variables to determine whether the Log is in the formal environment. If the Log is in the formal environment, no network interaction logs are output.
(3) You can add multiple public parameters in the form of addQueryParameter ("deviceType", "0"), so that all requests will carry this parameter.
(4) hereBASE_COM_URLIs the form of http://test.hello.com.
3. Usage:
(1) write the int
Because of the limited mobile phone traffic, when using Android phones, we should consider for users as much as possible to consume less user traffic, in applications, the display of network images is undoubtedly the most traffic-consuming. Therefore, we can compress images or cache images so that images can be obtained only once.
= = = == Options op = op.inSampleSize = 2= = Rect(0,
Today we share a basic usage of the Android Asynchronous network request framework on GitHub, and I'll share it with TOP1.
Let's start with a simple GET request.
Asynchttpclient client =NewAsynchttpclient (); Client.get ("http://www.google.com",NewAsynchttpresponsehandler () {@Override Public void OnStart() {//called before request is started}@Override Public void onsuccess(intSt
Objectivein fact, very lucky, after a week to follow two brothers to do Android development, Senior are great God, as a small white I can only learn a lot, a lot of effort. Recently have been busy not a chance to summarize, today just finished the Android client picture asynchronous loading class, here record (PS: Actually I am here is the reference online open source implementation)
principlethe principle
of data for a single request, such as gzip compression for HTTP data communication, numeric continuous data (such as latitude and longitude coordinate sequences) can pass the difference value6. For resource files, slices, to make multiple versions of the Save and request, large map small map asynchronous loading7. Respond to timely, as far as possible to give a friendly hint, prompting the user to wait, us
The Network request framework used in the android project and how to configure the interface URL and androidurl
Network requests are indispensable in our project. Many companies use some good open-source frameworks for network requests. volley is used in our project, now let's talk about the basic usage of volley. If y
Preparations:1) Check the phone is root, because the phone needs to execute the su command to modify the Phone gateway, so must root, if there is no root reference (Nexus S 4.1.1) This address: http://www.teamandroid.com/2012/07/20/root-nexus-s-on-android-411-jelly-bean-jro03e-official-software-update/2) install the terminal and busybox on the mobile phone through the market.
Step 1: System Setting-> wireless networks-> more-> tethering portables
Http://www.open-open.com/lib/view/open1326868964593.html
A friend asked me how the network request timed out. I didn't do this at the time, so I thought it was try .... catch... an error occurred while retrieving the result. I found that the result was not obtained. Today I have time to study it. I found that it was obtained from the object in the response, next I will share the entity of my own urlconnection and httpclient
=" +Str+ "language=zh-cnsensor=false"; returnGetValues (NULL, URL); } } Call the GetAddress () method to pass the latitude and longitude to get the detailed address returned is a JSON string, you can parse a bitMapsapiutils.getinstance (). GetAddress (getLocation (context)); Calculate route dataYou can get the time and distance from the beginning to the end.Call the Getroutes () method to transmit the start and end pointsMapsapiutils.getinstance (). GETLATLNG ("39.90403,116.407526"); Get lat
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