auto sync data android

project has been completed. Start creating an Android -side project below. 2.CreateAndroidEnd:Android End Project Structure:First step: CreateAndroidbusiness Logic layer of the end projectCore code: Senddatetoserver.java: Package Com.jph.sdg.service;import Java.net.httpurlconnection;import Java.net.url;import java.net.URLEncoder; Import Java.util.hashmap;import java.util.map;import android.os.handler;/** * Send

. getString ("xianJia ")); Map. put ("id", jsonObject. getInt ("id ")); List. add (map ); } Return list; } Finally, data adaptation: 1. TextView Copy codeThe Code is as follows :/** * ReadParse (String) obtains data from the server. * Analysis (String) parses json data */ Private void resultJson (){ Try { AllData = Analysis (readParse (url )); Iterator While (it

The previous article briefly introduced the use of the callback mechanism of Android. This blog post will focus on the data interaction between Fragment fragments and activity. fragment plays a vital role in Android development, through the official Android api, we can see that fragment has its own lifecycle and relies

://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical"Tools:context=". Mainactivity " > EditTextAndroid:id= "@+id/name"Android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"Android:hint= "Enter Name" /> EditTextAndroid:id= "@+id/age"Android:layout_width= "Match_parent"Android:layout_height= "W

In Android Application Development, common data exchange formats include XML and JSON. Each of these two methods has its own advantages. We can choose a suitable one in specific application development. Next let's take a look at josn data parsing: The example is always the best tutorial. Let's take a look at the example below! There is a JSON

getItem./* // IntentionIntent intent = new Intent ();// Set the actionIntent. setAction (Intent. ACTION_CALL );// Set DataIntent. setData (Uri. parse ("tel:" + p. getPhone ()));// Execution intentStartActivity (intent );*/// Toast. makeText (getApplicationContext (), p. getName (), Toast. LENGTH_LONG). show ();Int lid = (int) parent. getItemIdAtPosition (position );//Toast. makeText (getApplicationContext (), lid + "", Toast. LENGTH_LONG). show ();}});}@ OverridePublic boolean onCreateOptionsMe

1. when one ActivityA enters another ActivityB, the wait dialog box is displayed, indicating that the second Activity will be entered. When we press the return key, the ActivityB will be returned to ActiviyA, if ActivityA directly creates a startActivity and the Activity dialog box is still being transferred, we can start the Activity with startActivityForResult. However, the message will be returned to the previous Activity only after the finish method is called in ActivityB, set the returned r

Android uses UDP to transmit data, which causes Chinese garbled characters. Android udp Recently, the company needs to develop towards the smart home industry. We need to use UDP to transmit data and find some information on the Internet. However, we found garbled Characters During Chinese transmission, the problem is

1. Create XML data Create the Raw folder under the Res/directory in the Android project directory and create the Data.xml in the Raw folder. Copy Code code as follows: 2, XML parsing code Copy Code code as follows: Import java.io.IOException; Import Java.io.InputStream; Import Javax.xml.parsers.DocumentBuilder;Import Javax.xml.parsers.DocumentBuilderFactory;Import

Original address: Http://developer.android.com/guide/topics/data/install-location.html#CompatiblityFrom API8, you can install your app on an external storage. This is an optional feature that you can declare in your app's manifest: Android:installlocation property. Assuming that you do not declare this attribute, your application will be stored internally and cannot be moved to an external storage. xmlns:android = "/http" Schemas.android.com/apk/r

) {uihelper.toastmessage (mainactivity. This, r.string.xml_parser_failed); } } }; Private voidInitData () {selectordialog.show (); NewThread () { Public voidrun () {Message msg=NewMessage (); BooleanIsrefresh =false; Try{newslist list=appcontext.getnewslist (); if(List.getnewscount () > 0) {Msg.what= 1; Msg.obj=list.getnewslist (); Appcontext.saveobject (list,"Newslist_"); } Else{msg.what=-1; } } Catch(appexception e) {e.printstacktrace (); Msg.what=-2; Msg.obj=e;

Android Development using SQLite for data storage Android Development using SQLite for data storage A simple introduction to SQLite database How to use SQLite in Android 1 Creating a Sqliteopenhelper object and creating a table

Android uses socket to send Json data demo Client code: Package com. yqq. jsonclienttest; import java. io. IOException; import java. io. outputStream; import java.net. inetAddress; import java.net. socket; import java.net. unknownHostException; import org. json. JSONException; import org. json. JSONObject; import android. app. activity; import

Android study note 21. Use ContentProvider for data sharing (4). ContentProvider and androidprovider of the Operating System (contact)The Android system provides a large number of contentproviders, such as contact information and multimedia information of the system. Our developed applications mainly call the query () provided by the system's ContentProvider thro