mpuz

WifiManager wifiMan = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInf = wifiMan.getConnectionInfo();
int ipAddress = wifiInf.getIpAddress();
String ip = String.format("%d.%d.%d.%d", (ipAddress & 0xff),(ipAddress >> 8 & 0xff),(ipAddress >> 16 & 0xff),(ipAddress >> 24 & 0xff));

mpuz

public void AttenuateAudio(float[] data, int decibels)
{
    float gain = (float)Math.Pow(10, (double)-decibels / 20.0);
    for (int i = 0; i < data.Length; i++)
    {
        data[i] *= gain;
    }
}

mpuz

//Map to JSON:
  Map map = new HashMap();
  map.put("name", "foo");
  map.put("nickname", "bar");
  String jsonText = JSONValue.toJSONString(map);


//JSON to List/Map:
  String s = yourJsonString;
  List list = (JSONArray) JSONValue.parse(s);       

mpuz

// Sending side
byte[] data = text.getBytes("UTF-8");
String base64 = Base64.encodeToString(data, Base64.DEFAULT);

// Receiving side
byte[] data = Base64.decode(base64, Base64.DEFAULT);
String text = new String(data, "UTF-8");

mpuz

//While loop you are running is running on a default Thread termed as the ui thread so in short
//run while loops on separate threads.. eg..

new Thread(new Runnable() {
    @Override
    public void run() {
    // Your hard while loop here
    //get whatever you want and update your ui with ui communication methods.
    }
).start();

mpuz

//Add the following override to your activity, 
//This ought to fix the color banding issue you are seeing 
//by setting the window format to support more colors.

@Override
public void onAttachedToWindow() {
    getWindow().setFormat(PixelFormat.RGBA_8888);
}
//More info : http://developer.android.com/reference/android/view/Window.html#setFormat(int)

mpuz

// From android 4.1 / 4.2, the following Roboto font families are available:

android:fontFamily="sans-serif"           // roboto regular  
android:fontFamily="sans-serif-light"     // roboto light  
android:fontFamily="sans-serif-condensed" // roboto condensed  
android:fontFamily="sans-serif-thin"      // roboto thin (android 4.2)  
android:fontFamily="sans-serif-medium"    // roboto medium (android 5.0)
// in combination with this
android:textStyle="normal|bold|italic" 

mpuz

/** 
     * Ensures that the caller receives an usable multicast socket. 
     * In case the network configuration does not have a default gateway 
     * set, the multicast socket might not work. This is the case when 
     * the device is connected to a Wireless Direct printer. In that 
     * cases, force a network interface into the socket. 
     * 
     * @return A ready-to-use multicast socket. 
     */ 
    public static MulticastSocket createMulticastSocket(Context context)

mpuz

//Simple helper class to encrypt and decrypt strings using AES128. 
//The result is Ascii-encoded (actually hex, no base64), so no byte[] has to be stored. 
//A SEED value is used as a shared secret (“Master-Password”). 
//Only with the same SEED the stored values can be decrypted.

package net.sf.andhsli.hotspotlogin;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;

mpuz

WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = String.format("\"%s\"", ssid);
wifiConfig.preSharedKey = String.format("\"%s\"", key);

WifiManager wifiManager = (WifiManager)getSystemService(WIFI_SERVICE);
//remember id
int netId = wifiManager.addNetwork(wifiConfig);
wifiManager.disconnect();
wifiManager.enableNetwork(netId, true);
wifiManager.reconnect();