Zhao Yazhi _android http GET request

<!--Add Network access rights--
<uses-permission android:name= "Android.permission.INTERNET"/>

Layout file Activity_login.xml

<relativelayout xmlns:android= "http://schemas.android.com/apk/res/android" android:layout_width= "wrap_content "android:layout_height=" wrap_content "> <textview android:id=" @+id/username "Android:layout_wid Th= "Wrap_content" android:layout_height= "wrap_content" android:textsize= "20sp" android:layout_alignbaseline= "@+id /editusername "android:text=" @string/username "/> <edittext android:id=" @+id/editusername "Androi        D:layout_width= "Wrap_content" android:layout_height= "Wrap_content" android:layout_alignparentright= "true" android:layout_torightof= "@+id/username" android:hint= "@string/edit_username"/> <text View android:id= "@+id/password" android:layout_width= "wrap_content" android:layout_height= "Wrap_content" Android Oid:textsize= "20SP" android:layout_below= "@+id/username" android:layout_alignbaseline= "@+id/editpass" Android: text= "@string/password"/> <edittext ANdroid:id= "@+id/editpass" android:layout_width= "wrap_content" android:layout_height= "Wrap_content" an Droid:layout_alignparentright= "true" android:layout_torightof= "@+id/password" android:layout_below= "@+id/edi        Tusername "android:hint=" @string/edit_password "/> <button android:id=" @+id/btn_login "        Android:layout_width= "Wrap_content" android:layout_height= "wrap_content" android:layout_margintop= "80DP"         android:layout_below= "@+id/password" android:layout_marginleft= "50DP" android:text= "@string/btn_sure" android:onclick= "Login"/> <checkbox android:id= "@+id/checkbox" Android:layout_ Width= "Wrap_content" android:layout_height= "wrap_content" android:layout_marginleft= "50DP" Android:la Yout_alignbaseline= "@+id/btn_login" android:layout_below= "@+id/editpass" android:layout_torightof= "@+id/btn_ Login "Android:text= "@string/checkbox"/> <textview android:id= "@+id/tv_result" android:layout_width= "Wrap_ Content "android:layout_height=" Wrap_content "android:layout_alignparentbottom=" true "android:text=" @  String/tip_result "/></relativelayout>

String.xml

<?xml version= "1.0" encoding= "Utf-8"?><resources>    <string name= "App_name" >lesson03</ string>    <string name= "Hello_world" >hello world!</string>    <string name= "Action_settings" >Settings</string>    <string name= "username" > User name </string><string name= "password" > password </string>   <string name= "Edit_username" > Please enter user name </string><string name= "Edit_password" > Please enter password </string> <string name= "btn_sure" > OK </string>    <string name= "checkbox" > Remember password < /string>        <string name= "Tip_result" > Data returned by the server </string></resources>

Flow character Tool class Streamtools.java

Package Com.example.util;import Java.io.bytearrayoutputstream;import Java.io.ioexception;import Java.io.inputstream;public class Streamtools {/** * Convert the stream into a string * @param is * @return */public static string Streamtostr (Inpu TStream is) {The output stream of the try {//byte bytearrayoutputstream OS = new Bytearrayoutputstream ();//define read length int len = 0;//define buffer byte buffer[ ] = new byte[1024];//is read from the input stream and written to the OS object while (len = is.read (buffer) = =-1) {os.write (buffer, 0, Len);} Close stream Is.close (); Os.close ();//write to the byte stream return new String (Os.tobytearray ());} catch (IOException e) {//TODO auto-generated catch Blocke.printstacktrace (); return null;}}}

Activity Class Loginactivity.java

Package Com.example.android_http;import Java.io.inputstream;import Java.net.httpurlconnection;import Java.net.URL; Import Android.app.activity;import android.os.bundle;import Android.text.textutils;import Android.view.Menu;import Android.view.view;import Android.widget.edittext;import Android.widget.toast;import Com.example.util.StreamTools; public class Loginactivity extends Activity {private EditText et_username;private EditText et_password;@ overrideprotected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview ( R.layout.activity_login); Findview ();} @Overridepublic boolean Oncreateoptionsmenu (Menu menu) {//Inflate the menu; This adds items to the action bar if it is PR Esent.getmenuinflater (). Inflate (R.menu.login, menu); return true;} public void Findview () {Et_password = (EditText) Findviewbyid (r.id.editpass); et_username = (EditText) Findviewbyid ( R.id.editusername);} public void Login (View v) {//Get the Idint ID of the Click control = V.getid ();//Determine by ID switch (ID) {CAse r.id.btn_login://for login action//Toast.maketext (Getapplicationcontext (), "--", 0). Show ();//Get the username password final String userName = Et_username.gettext (). ToString (), final String userpass = Et_password.gettext (). ToString ();//Determine if NULL if ( Textutils.isempty (userName) | | Textutils.isempty (Userpass)) {Toast.maketext (Getapplicationcontext (), "User name or password cannot be empty", 0). Show ();} else { Toast.maketext (Getapplicationcontext (), "Send and Seek service", 0). Show ();//access network (requires a network of permissions)//access network (good operation) sub-thread, avoid blocking the main thread ui//http:/ /172.16.237.200:8080/video/login.do?username=chj&userpass=123//all time-consuming operations are to be in the thread of new threads () {public void run () { try {//request address String spec = "Http://172.16.237.200:8080/video/login.do?username=" + username + "&userpass=" + userpass ;//Create URL object (Network access URL) URL url = new URL (spec) based on address,//Connection object opened with HTTP protocol httpurlconnection URLConnection = (httpurlconnection) Url.openconnection (); Urlconnection.setrequestmethod ("get");//Make Request Urlconnection.setreadtimeout (5000) in get mode;// Set timeout urlconnection.setconnecttimeout (5000);//Set Connection Timeout URLCONNECTION.SEtrequestproperty ("User-agent", "mozilla/5.0" (Windows NT 6.3; WOW64; rv:27.0) gecko/20100101 firefox/27.0 ");//Get the corresponding code, 505 302if (urlconnection.getresponsecode () = = 200) {//Get the network back The input stream InputStream is = Urlconnection.getinputstream (); String result = Streamtools.streamtostr (IS); SYSTEM.OUT.PRINTLN ("The data returned is:" + result);} else {System.out.println ("Request URL failed");}} catch (Exception e) {//TODO auto-generated catch Blocke.printstacktrace ();}};}. Start ();} Break;default:break;}}}