best way to get music on android

Unique identification code This is useful in Web applications, such as checking for duplicate registrations.Import Android.provider.Settings.Secure;Private String android_id = secure.getstring (GetContext (). Getcontentresolver (), secure.android_id);We will use the unique identification code of the device more or less in the course of the project, we hope to get a stable and reliable device unique identification code. Today we will cover several ways

Android network programming is divided into two types: HTTP protocol based, and socket based. HTTP protocol based : HttpClient, HttpURLConnection, asynchttpclient framework, etc. Based on the socket : (1) socket, ServerSocket for TCP/IP (2) for UDP/IP Datagramsocket, Datagrampackage (3) Apache mina framework One, httpurlconnection implementation String response = null; URL url = new URL (path); HttpURLConnection connection = (htt

On the exit of all activity, the current online more popular way about the following:① the way of using Activitymanager;② a way to customize an activity collection class;③ by means of sending broadcasts;④ by killing the current application process;The specific implementation of the above can be self-Google Baidu, here no longer repeat.But these methods are either

On the exit of all activity, the current online more popular way about the following:① the way of using Activitymanager;② a way to customize an activity collection class;③ by means of sending broadcasts;④ by killing the current application process;The specific implementation of the above can be self-Google Baidu, here no longer repeat.But these methods are either

header and the cookie header.The Set-cookie header is contained in the response header (Responseheader) of the Web serverThe cookie header is contained in the browser client request header (Reguestheader)The operation of the cookie, the specific analysis is as follows2. Simple and brutal way to persist cookiesThe method is derived from this http://tsuharesu.com/handling-cookies-with-okhttp/After seeing how the cookie is transmitted, we can persist th

APK is actually the zip format, so, after extracting the APK, you will see there is a meta-inf directory. idea: because the Meta-inf directory does not affect the APK signature and run, so we can add an empty file in the Meta-inf directory, different channels to add different empty files, filenames represent different channels. In Android engineering, Java code reads this convention in Meta-inf with the file name that begins with Mtchannel_.The second

English Original: Probably is the best (?) to Save/restore Android Fragment ' sKey points: Fragment's arguments.After years of using fragment, I want to say that fragment is really a smart design, but there are too many problems to be solved by using fragment, especially when dealing with data retention.First, although it has an activity-like onsaveinstancestate, don't think you can keep the data just by Onsaveinstancestate.Here are some examples:Scen

(index); Is the data that gets the specified subscript index to int type; int id = cursor.getint (cursor.getcolumnindex ("id")) ; String named = cursor.getstring (Cursor.getcolumnindex ("name")); String number = cursor.getstring (Cursor.getcolumnindex ("number"));//Instantiate query result data Object person = new person (ID, named, number);} Close the database connection, release the Resource Db.close ();//Return the data result object return person; /** * Update a data based on name * * @para

(Exception e) {recvmessageclient = "Receive exception:" + e.getmessage () + "\ n";//message Wrap msg = new messages (); Msg.what = 0; Mhandler.sendmessage (msg); }} Handler Mhandler = new Handler () {public void Handlemessage (message msg) {super.handlemessage (msg); if (Msg.what = = 0) {Toast.maketext (Getactivity (), Recvmessageclient,toast.length_short). Show ();//refresh message mechanism} else if ( Msg.what = = 1) {try {String result = recvmessageclient; Toast.maketext (Getactivity (), R

Org.apache.http.params.httpconnectionparams;import Org.apache.http.util.entityutils;import Android.util.Log; public class NetworkService {private static string TAG = "NetworkService";//private static string url_ip = Serverurl.serve r_adress+ "Userinfoservlet?"; /private static String url_ip = "http://192.168.1.231:8080/indoor/";/** * Frees resources */public static void Cancel () {log.i (TAG, " Cancel! "); /IF (conn! = null) {//Conn.cancel ();//}}//No parameters passed public static string Getp

Guy:The UI event queue processes events sequentially. After Setcontentview () is called, the event queue contains a messagethat requires re-layout, so anything you post to the queue will be executed after the layout has changed. Your code executes only once, and you don't have to disable observer after each execution, and it's much more hassle-free.OnLayout method of Rewriting view:view = new View (this) { @Override protected void OnLayout (Boolean changed, int l, int t, int r, int b) {

Sendsmsactivity.java: Package Com.test.smsmangerdemo.sendsmsactivity;import Android.support.v7.app.appcompatactivity;import Android.os.bundle;import Android.content.intent;import Android.app.pendingintent;import Android.telephony.smsmanager;import Android.view.view;import Android.widget.button;import Android.widget.EditText Import android.widget.toast;/** * Send SMS Instance */public class Sendsmsactivity extends Appcompatactivity {EditText phone, con Tent Button send; @Overrid

Setnegativebutton () method to add a button, because the method (Simpledialog ()) Here only provides the call, so there is no specific function to implement the button, you can override the two methods in the actual call to achieve the specific functionality. The invocation is as follows, and the dialog boxes for several other ways are basically the same as the way this method is invoked, and the following are no longer given. public void On

There are two ways of submitting data to the server, post and get. The difference between the two is mainly three points, security, length limit, data structure. Where GET request security is relatively poor, the data length is limited by the browser address bar and no method body is used. Both are more important ways of submitting data. Here is a brief introduction to three types of post and

First, the phenomenon The usual way to download files via the Android WebView is 1. Rewrite the Downloadlistener Ondownloadstart method, pop-up dialog box in Ondownloadstart method prompts the user to have a new file to download 2. After the user clicks OK, downloads the file through the HTTP GET As a result of the Androi