Android Programlama: WiFi Listesi oluşturma ve İstenen Wifi Bağlantısı Yapma

AndroidManifest.xml;

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.okul.myapplicationwifilist" >
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/ThemeOverlay.AppCompat.Light" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:theme="@style/Theme.AppCompat.Light.DarkActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

activity_main.xml;

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

    <TextView android:text="Wifi Liste" android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/textview"
        android:textSize="35dp"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />
    <Spinner
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textview"
        android:background="#ff0000"
        android:id="@+id/spinner">

    </Spinner>

    <TextView
        android:layout_marginTop="10dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/textView2"
        android:text="Bir Kablosuz Ağ Adı Seçiniz"
        android:layout_below="@+id/spinner" />
    <ListView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/listView"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:background="#fff5d376"
        android:layout_below="@+id/textView2" />

</RelativeLayout>

MainActivity.java;

package com.example.okul.myapplicationwifilist;
import android.app.Activity;
import android.content.BroadcastReceiver;

import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;

import android.graphics.Color;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;

import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;

import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;

public class MainActivity extends ActionBarActivity {
    ListView lv;
    TextView tekdeger;
    WifiManager wifi;
    String wifis[];
    WifiScanReceiver wifiReciever;
    int degerbul=-1;
    Spinner spinner;
    TextView textView2;

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    }



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        lv=(ListView)findViewById(R.id.listView);
        tekdeger=(TextView) findViewById(R.id.textview);
        spinner=(Spinner)findViewById(R.id.spinner);
        textView2=(TextView)findViewById(R.id.textView2);
        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                //String[] dersDizisi = getResources().getStringArray(R.array.dersler);
                textView2.setText(wifis[position] + " ağını seçtiniz!");
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });

        wifi=(WifiManager)getSystemService(Context.WIFI_SERVICE);
        wifiReciever = new WifiScanReceiver();
        wifi.startScan();
        WifiConfiguration wifiConfig =new WifiConfiguration();
        wifiConfig.SSID = String.format("\"%s\"", "istenenWifiAdi");
        wifiConfig.preSharedKey = String.format("\"%s\"", "password");
        //WifiManager wifiMgr = (WifiManager) getSystemService(Context.WIFI_SERVICE);
        int netId = wifi.addNetwork(wifiConfig);
        wifi.disconnect();
        wifi.enableNetwork(netId, true);
        wifi.reconnect();
    }

    protected void onPause() {
        unregisterReceiver(wifiReciever);
        super.onPause();
    }

    protected void onResume() {
        registerReceiver(wifiReciever, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
        super.onResume();
    }

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

        getMenuInflater().inflate(R.menu.menu_main, menu);
        return super.onCreateOptionsMenu(menu);
    }

    @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();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    private class WifiScanReceiver extends BroadcastReceiver{
        public void onReceive(Context c, Intent intent) {
            List<ScanResult> wifiScanList = wifi.getScanResults();
            wifis = new String[wifiScanList.size()];
            for(int i = 0; i < wifiScanList.size(); i++){
                wifis[i] = ((wifiScanList.get(i)).toString());
                if(wifis[i].contains("Unutkan_K1")){
                    degerbul=i;
                }
                if(wifis[i].contains("SSID:")){
                    //wifis[i]=wifis[i].substring(wifis[i].indexOf("SSID:"), wifis[i].indexOf("BSSID:")-1);
                    wifis[i]=wifis[i].substring(5, wifis[i].indexOf("BSSID:")-2);
                }

                //myString.substring(myString.indexOf("dunya"), myString.length())
                //

            }

            lv.setAdapter(new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1, wifis));
            spinner.setAdapter(new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1, wifis));
            if(degerbul!=-1){
                //tekdeger.setText(wifis[degerbul]);
                tekdeger.setText("istenenWifiAdi");
                /*WifiConfiguration wifiConfig =new WifiConfiguration();
                wifiConfig.SSID = String.format("\"%s\"", "istenenWifiAdi");
                wifiConfig.preSharedKey = String.format("\"%s\"", "wifiPasword");
                //WifiManager wifiMgr = (WifiManager) getSystemService(Context.WIFI_SERVICE);
                int netId = wifi.addNetwork(wifiConfig);
                wifi.disconnect();
                wifi.enableNetwork(netId, true);
                wifi.reconnect();
                //programsonlanınca bağlanıyor
                */

            }else{
                tekdeger.setText("Kablosuz ağların listesinde aranılan ağ bulunamadı");
            }



        }
    }
}