how to determine your device is connected to Wi-Fi Direct or Wi-Fi hotspot via Android programming

Question

I want to know that my Mobile device is in Wi-Fi Direct or in hotspot connection programmatically. Thanks please help me.

Answer 1

For wifi-direct

First add permissions in manifest

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.nsdchat"
...

<uses-permission
    android:required="true"
    android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission
    android:required="true"
    android:name="android.permission.CHANGE_WIFI_STATE"/>
<uses-permission
    android:required="true"
    android:name="android.permission.INTERNET"/>

Then in onCreate()

private final IntentFilter intentFilter = new IntentFilter();

...

public void onCreate(Bundle savedInstanceState) {
    WifiP2pManager manager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE);
    WifiP2pManager.Channel channel = manager.initialize(this, getMainLooper(), null);

intentFilter.addAction(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION);

}

Check this link for more methods and details

For hotspot

public void getClientList() {
    int macCount = 0;
    BufferedReader br = null;
    try {
        br = new BufferedReader(new FileReader("/proc/net/arp"));
        String line;
        while ((line = br.readLine()) != null) {
            String[] splitted = line.split(" +");
            if (splitted != null ) {
                // Basic sanity check
                String mac = splitted[3];
                System.out.println("Mac : Outside If "+ mac );
                if (mac.matches("..:..:..:..:..:..")) {
                    macCount++;
                   /* ClientList.add("Client(" + macCount + ")");
                    IpAddr.add(splitted[0]);
                    HWAddr.add(splitted[3]);
                    Device.add(splitted[5]);*/
                    System.out.println("Mac : "+ mac + " IP Address : "+splitted[0] );
                    System.out.println("Mac_Count  " + macCount + " MAC_ADDRESS  "+ mac);
                Toast.makeText(
                        getApplicationContext(),
                        "Mac_Count  " + macCount + "   MAC_ADDRESS  "
                                + mac, Toast.LENGTH_SHORT).show();

                }
               /* for (int i = 0; i < splitted.length; i++)
                    System.out.println("Addressssssss     "+ splitted[i]);*/

            }
        }
    } catch(Exception e) {

    }               
}