Android – Aplicación para visualizar todos Disponible red WiFi y conectarse con la red específica.

En este fragmento de código / aplicación, vamos a aprender cómo para mostrar toda la red Wi-Fi disponibles y conectarse con una red WiFi específico en la tableta / móvil?

Esta aplicación contiene los siguientes archivos

  1. activity_main.xml
  2. MainActivity.java
  3. AndroidManifest.xml
  4. connect.xml
  5. list_item.xml

Código Android de fragmentos – aplicación para mostrar todas Wi-Fi disponibles y conectarse con la red Wi-Fi específica

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout >:android="http://schemas.android.com/apk/res/android"
>:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.includehelp.wifilist.MainActivity">
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>

MainActivity.java

package com.includehelp.wifilist;
import android.annotation.SuppressLint;
import android.app.Dialog;
import android.app.ListActivity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;
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.TextView;
import android.widget.Toast;
import java.util.List;
public class MainActivity extends ListActivity {
WifiManager mainWifiObj;
WifiScanReceiver wifiReciever;
ListView list;
String wifis[];
EditText pass;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list=getListView();
mainWifiObj = (WifiManager) getSystemService(Context.WIFI_SERVICE);
wifiReciever = new WifiScanReceiver();
mainWifiObj.startScan();
// listening to single list item on click
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// selected item
String ssid = ((TextView) view).getText().toString();
connectToWifi(ssid);
Toast.makeText(MainActivity.this,"Wifi SSID : "+ssid,Toast.LENGTH_SHORT).show();
}
});
}
protected void onPause() {
unregisterReceiver(wifiReciever);
super.onPause();
}
protected void onResume() {
registerReceiver(wifiReciever, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
super.onResume();
}
class WifiScanReceiver extends BroadcastReceiver {
@SuppressLint("UseValueOf")
public void onReceive(Context c, Intent intent) {
List<ScanResult> wifiScanList = mainWifiObj.getScanResults();
wifis = new String[wifiScanList.size()];
for(int i = 0; i < wifiScanList.size(); i++){
wifis[i] = ((wifiScanList.get(i)).toString());
}
String filtered[] = new String[wifiScanList.size()];
int counter = 0;
for (String eachWifi : wifis) {
String[] temp = eachWifi.split(",");
filtered[counter] = temp[0].substring(5).trim();//+"n" + temp[2].substring(12).trim()+"n" +temp[3].substring(6).trim();//0->SSID, 2->Key Management 3-> Strength
counter++;
}
list.setAdapter(new ArrayAdapter<String>(getApplicationContext(),R.layout.list_item,R.id.label, filtered));
}
}
private void finallyConnect(String networkPass, String networkSSID) {
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = String.format(""%s"", networkSSID);
wifiConfig.preSharedKey = String.format(""%s"", networkPass);
// remember id
int netId = mainWifiObj.addNetwork(wifiConfig);
mainWifiObj.disconnect();
mainWifiObj.enableNetwork(netId, true);
mainWifiObj.reconnect();
WifiConfiguration conf = new WifiConfiguration();
conf.SSID = """" + networkSSID + """";
conf.preSharedKey = """ + networkPass + """;
mainWifiObj.addNetwork(conf);
}
private void connectToWifi(final String wifiSSID) {
final Dialog dialog = new Dialog(this);
dialog.setContentView(R.layout.connect);
dialog.setTitle("Connect to Network");
TextView textSSID = (TextView) dialog.findViewById(R.id.textSSID1);
Button dialogButton = (Button) dialog.findViewById(R.id.okButton);
pass = (EditText) dialog.findViewById(R.id.textPassword);
textSSID.setText(wifiSSID);
// if button is clicked, connect to the network;
dialogButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String checkPassword = pass.getText().toString();
finallyConnect(checkPassword, wifiSSID);
dialog.dismiss();
}
});
dialog.show();
}
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest >:android="http://schemas.android.com/apk/res/android"
package="com.includehelp.wifilist">
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_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:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

connect.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout >:android="http://schemas.android.com/apk/res/android"
>:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.includehelp.wifilist.MainActivity">
<TextView
android:id="@+id/textSSID1"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<EditText
android:id="@+id/textPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/textSSID1"
android:layout_marginTop="5dp"/>
<Button
android:id="@+id/okButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/textPassword"
android:text="Connect"/>
</RelativeLayout>

list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Single List Item Design -->
<TextView >:android="http://schemas.android.com/apk/res/android"
android:id="@+id/label"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dip"
android:textSize="16dip"
android:textStyle="bold"
android:textColor="@android:color/holo_blue_dark">
</TextView>

Resultado

Android - Application to Display All Available WiFi Network and Connect with Specific Network. - 4
Android - Application to Display All Available WiFi Network and Connect with Specific Network. - 5


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