Programmation Androïd ; Les bases du Wifi

Android Manifest :

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.reunisoft.lotofun.lotofunmodule01" >

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.reunisoft.lotofun.lotofunmodule01.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

    <uses-feature android:name="android.hardware.wifi" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />

</manifest>

Dans le MainActivity.java :

package com.reunisoft.lotofun.lotofunmodule01;

import android.net.wifi.WifiManager;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.EditText;
import android.widget.TextView;
import android.content.Context;

public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        EditText editText = (EditText) findViewById(R.id.editText);

        try {
            WifiManager myWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
            boolean wasEnabled = myWifiManager.isWifiEnabled();

            myWifiManager.setWifiEnabled(true);
            while (!myWifiManager.isWifiEnabled()) {
                editText.setText("Enabling Wifi...", TextView.BufferType.NORMAL);
            }

            if (myWifiManager.isWifiEnabled() == true) {
                editText.append("Wifi is enabled");

            }
            else
                editText.append("Wifi is not enabled");

        }
        catch (Exception e) {
            editText.setText(e.getMessage(), TextView.BufferType.NORMAL);
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}