Android Development HTTP Access Network _android

This article gives us a detailed introduction of the Android development of the HTTP access network code, for your reference, the specific contents are as follows

Code 1:

Package com.ywhttpurlconnection;
Import android.app.Activity;
Import android.content.Intent;
Import Android.os.Bundle;
Import Android.view.View;

Import Android.widget.Button; The public class Ywhttpurlconnectionactivity extends activity {/** called the ' when the ' is ' the ' activity ' is the ' the '. * Private 
 Button btn1 = null; 
 Private Button btn2 = null; 
 Private Button btn3 = null; 
 Private Button btn4 = null; 
  @Override public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); 
  Setcontentview (R.layout.main); 
  Direct access to data BTN1 = (Button) This.findviewbyid (R.ID.BUTTON01); 
  Get Way passes BTN2 = (Button) This.findviewbyid (R.ID.BUTTON02);
  Post Mode passes BTN3 = (Button) This.findviewbyid (R.ID.BUTTON03);
  
  Get Picture Btn4 = (Button) This.findviewbyid (r.id.button04); Btn1.setonclicklistener (New Button.onclicklistener () {public void OnClick (View v) {//TODO auto-generated Meth 
    OD stub Intent Intent = new Intent (); Intent.setclass (ywhttpUrlconnectionactivity.this, Showdata.class); 
    Bundle B = new Bundle (); 
    B.putint ("id", 1); 
    Intent.putextras (b); 
   StartActivity (Intent); 
  } 
    
  }); Btn2.setonclicklistener (New Button.onclicklistener () {public void OnClick (View v) {//TODO auto-generated Meth 
    OD stub Intent Intent = new Intent (); 
    Intent.setclass (Ywhttpurlconnectionactivity.this, Showdata.class); 
    Bundle B = new Bundle (); 
    B.putint ("id", 2); 
    Intent.putextras (b); 
   StartActivity (Intent); 
  } 
    
  }); Btn3.setonclicklistener (New Button.onclicklistener () {public void OnClick (View v) {//TODO auto-generated Meth 
    OD stub Intent Intent = new Intent (); 
    Intent.setclass (Ywhttpurlconnectionactivity.this, Showdata.class); 
    Bundle B = new Bundle (); 
    B.putint ("id", 3); 
    Intent.putextras (b); 
   StartActivity (Intent); 
  } 
    
  }); 
   Btn4.setonclicklistener (New Button.onclicklistener () {public void OnClick (View v) { TODO auto-generated Method Stub Intent Intent = new Intent (); 
    Intent.setclass (Ywhttpurlconnectionactivity.this, Showdata.class); 
    Bundle B = new Bundle (); 
    B.putint ("id", 4); 
    Intent.putextras (b); 
   StartActivity (Intent); 
 } 
    
  });

 } 
}

Code 2:

Package com.ywhttpurlconnection;
Import Java.io.BufferedReader;
Import Java.io.DataOutputStream;
Import java.io.IOException;
Import Java.io.InputStream;
Import Java.io.InputStreamReader;
Import Java.io.OutputStream;
Import java.net.HttpURLConnection;
Import java.net.MalformedURLException;
Import Java.net.URL;

Import Java.net.URLEncoder;
Import android.app.Activity;
Import android.content.Intent;
Import Android.graphics.Bitmap;
Import Android.graphics.BitmapFactory;
Import Android.os.Bundle;
Import Android.util.Log;
Import Android.widget.ImageView;


Import Android.widget.TextView; 
 public class ShowData extends activity {private TextView TV = null; 
 Private ImageView IV = NULL; 
 Private Bitmap mbitmap = null; 
  @Override public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); 
  Setcontentview (r.layout.http); 
  Intent Intent = This.getintent (); 
  Bundle B = Intent.getextras (); 
  int id = b.getint ("id"); TV = (TextView) This.findviewbyid (R. Id. 
  Textview_http); 
  IV = (ImageView) This.findviewbyid (R.ID.IMAGEVIEW01); 
   Direct FETCH data if (id = = 1) {//String Httpurl = "http://192.168.0.132:8080/Android/http.jsp";
   String Httpurl = "http://www.jb-aptech.com.cn"; 
   URL url = null; 
   try {url = new URL (httpurl); 
   catch (Malformedurlexception e) {e.printstacktrace (); } if (URL!= null) {try {//open connection, where only one instance is created and there is no real connection httpurlconnection Urlconn = (httpurlconnection
     ) url.openconnection ();
     
     Connecting Urlconn.connect (); 
     InputStream input = Urlconn.getinputstream (); 
     InputStreamReader Inputreader = new InputStreamReader (input); 
     BufferedReader reader = new BufferedReader (Inputreader); 
     String inputline = null; 
     StringBuffer sb = new StringBuffer (); 
     while ((Inputline = Reader.readline ())!= null) {sb.append (Inputline). Append ("\ n"); 
     } reader.close (); 
     Inputreader.close (); 
     
     Input.close (); Urlconn.discOnnect (); 
     if (SB!=null) {Tv.settext (sb.tostring ()); 
     }else{tv.settext ("Read content: NULL"); 
    } catch (IOException e) {e.printstacktrace (); 
   }}else{log.i ("TAG", "URL is null"); 
   }else if (id==2) {//get pass//String Httpurl = "HTTP://192.168.0.132:8080/ANDROID/HTTPREQ.JSP?PAR=HK"; 

   String Httpurl = "http://liveat.acewill.cn/liveat/?cmd=1&uid=xiaoming"; 
   URL url = null; 
   try {url = new URL (httpurl); 
   catch (Malformedurlexception e) {e.printstacktrace ();  } if (URL!= null) {try {httpurlconnection urlconn = (httpurlconnection) URL. OpenConnection (); 
     Open the connection, here just to create a strength, and no real connection urlconn.setdoinput (true); 
     Urlconn.setdooutput (TRUE); 
     Urlconn.connect ();//connect InputStream input = Urlconn.getinputstream (); 
     InputStreamReader Inputreader = new InputStreamReader (input); 
     BufferedReader reader = new BufferedReader (Inputreader); StringInputline = null; 
     StringBuffer sb = new StringBuffer (); 
     while ((Inputline = Reader.readline ())!= null) {sb.append (Inputline). Append ("\ n"); 
     } reader.close (); 
     Inputreader.close (); 
     Input.close (); 
     Urlconn.disconnect (); 
     if (SB!=null) {Tv.settext (sb.tostring ()); 
     }else{tv.settext ("Read content: NULL"); 
    } catch (IOException e) {e.printstacktrace (); 
   }}else{log.i ("TAG", "URL is null"); 
   }else if (id==3) {//post pass//String Httpurl = "http://192.168.0.132:8080/Android/httpreq.jsp"; 

   String Httpurl = "http://www.jb-aptech.com.cn"; 
   URL url = null; 
   try {url = new URL (httpurl); 
   catch (Malformedurlexception e) {e.printstacktrace ();  } if (URL!= null) {try {httpurlconnection urlconn = (httpurlconnection) URL. OpenConnection (); 
     Open the connection, where only one instance is created, and there is no true connection Urlconn.setdoinput (true); 
     Urlconn.setdooutput (TRUE); urLconn.setrequestmethod ("POST"); 
     Urlconn.setusecaches (false);//post request cannot use cache. 
     Urlconn.setinstancefollowredirects (TRUE);//whether to automatically redirect. 
     Urlconn.connect ();//connect OutputStream out = Urlconn.getoutputstream (); 
     DataOutputStream data = new DataOutputStream (out); 
     Data.writebytes ("par=" +urlencoder.encode ("HK", "GBK")); 
     Data.flush (); 
     Data.close (); 
     Out.close (); 
     InputStream input = Urlconn.getinputstream (); 
     InputStreamReader Inputreader = new InputStreamReader (input); 
     BufferedReader reader = new BufferedReader (Inputreader); 
     String inputline = null; 
     StringBuffer sb = new StringBuffer (); 
     while ((Inputline = Reader.readline ())!= null) {sb.append (Inputline). Append ("\ n"); 
     } reader.close (); 
     Inputreader.close (); 
     Input.close (); 
     Urlconn.disconnect (); 
     if (SB!=null) {Tv.settext (sb.tostring ()); 
     }else{tv.settext ("Read content: NULL"); catch (IOException E){E.printstacktrace (); 
   }}else{log.i ("TAG", "URL is null"); 
   }}else if (id==4) {String Httpurl = "Http://www.google.com.hk/intl/zh-CN/images/logo_cn.gif"; 
   URL url = null; 
   try {url = new URL (httpurl); 
   catch (Malformedurlexception e) {e.printstacktrace (); } if (URL!= null) {try {//open connection, where only one instance is created and there is no real connection httpurlconnection Urlconn = (httpurlconnection
     ) url.openconnection (); 
     Urlconn.connect ();//connect InputStream input = Urlconn.getinputstream (); 
     Mbitmap = Bitmapfactory.decodestream (input); 
     if (Mbitmap!= null) {Iv.setimagebitmap (MBITMAP); 
    } catch (IOException e) {e.printstacktrace (); 
   }}else{log.i ("TAG", "URL is null"); 

 } 
  } 
 } 
}

Code 3:

<?xml version= "1.0" encoding= "Utf-8"?> <manifest xmlns:android=
"http://schemas.android.com/apk/res/" Android "
 package=" com.ywhttpurlconnection "
 android:versioncode=" 1 "
 android:versionname=" 1.0 ">

 <uses-sdk android:minsdkversion= "/>
 <uses-permission android:name=" Android.permission.INTERNET "/>
 <application
  android:icon=" @drawable/ic_launcher "
  android: Label= "@string/app_name" >
  <activity
   android:label= "/app_name" @string android:name=
   . Ywhttpurlconnectionactivity ">
   <intent-filter >
    <action android:name=" Android.intent.action.MAIN "/>

    <category android:name=" Android.intent.category.LAUNCHER "/>"
   </intent-filter>
  </activity>
   <activity android:name= ". ShowData" ></activity> 
 </application>

</manifest>

Code 4:http.xml

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android=
"http://schemas.android.com/apk/" Res/android "
 android:layout_width=" match_parent "
 android:layout_height=" match_parent "
 android:o" rientation= "vertical" >

 <textview
  android:id= "@+id/textview_http" android:layout_width= "Fill_"
  Parent "
  android:layout_height=" wrap_content "
  />
  <imageview
  android:id=" @+id/ ImageView01 "
  android:layout_width=" 172DP "
  android:layout_height=" 307DP ">

 </ImageView>

</LinearLayout>

Code 5.mail.xml

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android= "http://schemas.android.com/apk/res/" Android "Android:layout_width=" Fill_parent "android:layout_height=" fill_parent "android:orientation=" vertical " > <textview android:layout_width= "fill_parent" android:layout_height= wrap_content "android:text=" @string/he Llo "/> <button android:text=" Direct fetch data "android:id=" @+id/button01 "android:layout_width=" Fill_parent "Andro" id:layout_height= "Wrap_content" > </Button> <button android:text= "Get mode Pass" android:id= "@+id/button02" an Droid:layout_width= "Fill_parent" android:layout_height= "wrap_content" > </Button> <button android:text= 
 "Post-pass" android:id= "@+id/button03" android:layout_width= "fill_parent" android:layout_height= "Wrap_content" > </Button> <button android:text= "Get Picture" android:id= "@+id/button04" android:layout_width= "Fill_parent" Andr oid:layout_height= "Wrap_content" > </button> </LinearLayout>

 

6. Operating Results

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