Created
February 23, 2012 15:52
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Android Simple web server using NanoHTTPD (http://elonen.iki.fi/code/nanohttpd)
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| <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission> | |
| <uses-permission android:name="android.permission.INTERNET"></uses-permission> |
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| package com.komamitsu; | |
| import java.io.IOException; | |
| import java.util.Map.Entry; | |
| import java.util.Properties; | |
| import android.app.Activity; | |
| import android.net.wifi.WifiManager; | |
| import android.os.Bundle; | |
| import android.os.Handler; | |
| import android.widget.TextView; | |
| public class AndroidWebServerActivity extends Activity { | |
| private static final int PORT = 8765; | |
| private TextView hello; | |
| private MyHTTPD server; | |
| private Handler handler = new Handler(); | |
| @Override | |
| public void onCreate(Bundle savedInstanceState) { | |
| super.onCreate(savedInstanceState); | |
| setContentView(R.layout.main); | |
| hello = (TextView) findViewById(R.id.hello); | |
| } | |
| @Override | |
| protected void onResume() { | |
| super.onResume(); | |
| TextView textIpaddr = (TextView) findViewById(R.id.ipaddr); | |
| WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE); | |
| int ipAddress = wifiManager.getConnectionInfo().getIpAddress(); | |
| final String formatedIpAddress = String.format("%d.%d.%d.%d", (ipAddress & 0xff), (ipAddress >> 8 & 0xff), | |
| (ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff)); | |
| textIpaddr.setText("Please access! http://" + formatedIpAddress + ":" + PORT); | |
| try { | |
| server = new MyHTTPD(); | |
| } catch (IOException e) { | |
| e.printStackTrace(); | |
| } | |
| } | |
| @Override | |
| protected void onPause() { | |
| super.onPause(); | |
| if (server != null) | |
| server.stop(); | |
| } | |
| private class MyHTTPD extends NanoHTTPD { | |
| public MyHTTPD() throws IOException { | |
| super(PORT, null); | |
| } | |
| @Override | |
| public Response serve(String uri, String method, Properties header, Properties parms, Properties files) { | |
| final StringBuilder buf = new StringBuilder(); | |
| for (Entry<Object, Object> kv : header.entrySet()) | |
| buf.append(kv.getKey() + " : " + kv.getValue() + "\n"); | |
| handler.post(new Runnable() { | |
| @Override | |
| public void run() { | |
| hello.setText(buf); | |
| } | |
| }); | |
| final String html = "<html><head><head><body><h1>Hello, World</h1></body></html>"; | |
| return new NanoHTTPD.Response(HTTP_OK, MIME_HTML, html); | |
| } | |
| } | |
| } |
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| <?xml version="1.0" encoding="utf-8"?> | |
| <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" | |
| android:orientation="vertical" | |
| android:layout_width="fill_parent" | |
| android:layout_height="fill_parent" | |
| > | |
| <TextView | |
| android:id="@+id/ipaddr" | |
| android:layout_width="fill_parent" | |
| android:layout_height="wrap_content" | |
| android:paddingBottom="40dp" | |
| /> | |
| <TextView | |
| android:id="@+id/hello" | |
| android:layout_width="fill_parent" | |
| android:layout_height="wrap_content" | |
| android:text="@string/hello" | |
| /> | |
| </LinearLayout> |
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| <?xml version="1.0" encoding="utf-8"?> | |
| <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" | |
| android:orientation="vertical" | |
| android:layout_width="fill_parent" | |
| android:layout_height="fill_parent" | |
| > | |
| <TextView | |
| android:id="@+id/ipaddr" | |
| android:layout_width="fill_parent" | |
| android:layout_height="wrap_content" | |
| android:paddingBottom="40dp" | |
| /> | |
| <TextView | |
| android:id="@+id/hello" | |
| android:layout_width="fill_parent" | |
| android:layout_height="wrap_content" | |
| android:text="@string/hello" | |
| /> | |
| </LinearLayout> |
It seems that's a server.Start() is missing. I put that line after creating the MyHTTPD server variable.
the server.Start() is missing. http://stackoverflow.com/questions/16560285/how-to-create-nanohttpd-server-in-android
Thanks for this example! The IP reported was 0.0.0.0. I had to use 127.0.0.1 to reach the server.
I wish to make an app that can control all the phones features using a web server. For example I wish to turn on the flash light by clicking a button on the webpage server by nanohttpd. How can this be accompilished?
@aswinpj Could you able to make that? In my case server is killed by Android OS after a while.
how can i upload file with nanoHttp? in android ?
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I used the code snippet :
public String getLocalIpAddress() {
try {
for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
return inetAddress.getHostAddress().toString();
}
}
}
} catch (SocketException ex) {
Log.e("Exception", ex.toString());
}
return null;
}
As I was getting the IP address as 0.