برنامه نویسی اپلیکیشن اسکنر وای فای برای اندروید — از صفر تا صد

1<?xml version="1.0" encoding="utf-8"?>
2<manifest xmlns:android="http://schemas.android.com/apk/res/android"
3    package="com.ssaurel.scanwifi">
4
5    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
6
7    <application
8        android:allowBackup="true"
9        android:icon="@mipmap/ic_launcher"
10        android:label="@string/app_name"
11        android:roundIcon="@mipmap/ic_launcher_round"
12        android:supportsRtl="true"
13        android:theme="@style/AppTheme">
14        <activity android:name=".WiFiScannerActivity">
15            <intent-filter>
16                <action android:name="android.intent.action.MAIN" />
17
18                <category android:name="android.intent.category.LAUNCHER" />
19            </intent-filter>
20        </activity>
21    </application>
22
23</manifest>

1<?xml version="1.0" encoding="utf-8"?>
2<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3    android:orientation="vertical"
4    android:padding="10dp"
5    android:layout_width="match_parent"
6    android:layout_height="match_parent">
7
8    <ListView
9        android:id="@+id/wifiList"
10        android:layout_width="match_parent"
11        android:layout_height="312dp"
12        android:layout_weight="0.97"/>
13
14    <Button
15        android:id="@+id/scanBtn"
16        android:layout_width="match_parent"
17        android:layout_height="50dp"
18        android:layout_gravity="bottom"
19        android:layout_margin="15dp"
20        android:background="@android:color/holo_red_light"
21        android:text="Scan WiFi"/>
22
23</LinearLayout>

1if (!wifiManager.isWifiEnabled()) {
2  Toast.makeText(this, "WiFi is disabled ... We need to enable it", Toast.LENGTH_LONG).show();
3  wifiManager.setWifiEnabled(true);
4}

1private void scanWifi() {
2  arrayList.clear();
3  registerReceiver(wifiReceiver, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
4  wifiManager.startScan();
5  Toast.makeText(this, "Scanning WiFi ...", Toast.LENGTH_SHORT).show();
6}

1BroadcastReceiver wifiReceiver = new BroadcastReceiver() {
2  @Override
3  public void onReceive(Context context, Intent intent) {
4    results = wifiManager.getScanResults();
5    unregisterReceiver(this);
6
7    for (ScanResult scanResult : results) {
8      arrayList.add(scanResult.SSID + " - " + scanResult.capabilities);
9      adapter.notifyDataSetChanged();
10    }
11  };
12}

1package com.ssaurel.scanwifi;
2
3import android.content.BroadcastReceiver;
4import android.content.Context;
5import android.content.Intent;
6import android.content.IntentFilter;
7import android.net.wifi.ScanResult;
8import android.net.wifi.WifiManager;
9import android.os.Bundle;
10import android.support.v7.app.AppCompatActivity;
11import android.view.View;
12import android.widget.ArrayAdapter;
13import android.widget.Button;
14import android.widget.ListView;
15import android.widget.Toast;
16
17import java.util.ArrayList;
18import java.util.List;
19
20public class WiFiScannerActivity extends AppCompatActivity{
21
22  private WifiManager wifiManager;
23  private ListView listView;
24  private Button buttonScan;
25  private int size = 0;
26  private List<ScanResult> results;
27  private ArrayList<String> arrayList = new ArrayList<>();
28  private ArrayAdapter adapter;
29
30  @Override
31  public void onCreate(Bundle savedInstanceState) {
32    super.onCreate(savedInstanceState);
33    setContentView(R.layout.activity_main);
34    buttonScan = findViewById(R.id.scanBtn);
35    buttonScan.setOnClickListener(new View.OnClickListener() {
36	  @Override
37      public void onClick(View view) {
38        scanWifi();
39      }
40    });
41
42    listView = findViewById(R.id.wifiList);
43    wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
44
45    if (!wifiManager.isWifiEnabled()) {
46      Toast.makeText(this, "WiFi is disabled ... We need to enable it", Toast.LENGTH_LONG).show();
47      wifiManager.setWifiEnabled(true);
48    }
49
50    adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, arrayList);
51    listView.setAdapter(adapter);
52    scanWifi();
53  }
54
55  private void scanWifi() {
56    arrayList.clear();
57    registerReceiver(wifiReceiver, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
58    wifiManager.startScan();
59    Toast.makeText(this, "Scanning WiFi ...", Toast.LENGTH_SHORT).show();
60  }
61
62  BroadcastReceiver wifiReceiver = new BroadcastReceiver() {
63    @Override
64    public void onReceive(Context context, Intent intent) {
65      results = wifiManager.getScanResults();
66      unregisterReceiver(this);
67
68      for (ScanResult scanResult : results) {
69        arrayList.add(scanResult.SSID + " - " + scanResult.capabilities);
70        adapter.notifyDataSetChanged();
71      }
72    };
73  }
74}