Android扫描wifi热点代码，androidwifi热点,import java.

Android扫描wifi热点代码，androidwifi热点,import java.

import java.util.List; import android.app.Activity; 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.WifiManager; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.widget.TextView; public class WifiTester extends Activity {      TextView mainText;      WifiManager mainWifi;      WifiReceiver receiverWifi;      List<ScanResult> wifiList;      StringBuilder sb = new StringBuilder();     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);         mainText = (TextView) findViewById(R.id.mainText);         mainWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);         receiverWifi = new WifiReceiver();         registerReceiver(receiverWifi, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));         mainWifi.startScan();         mainText.setText("\nStarting Scan...\n");     }      public boolean onCreateOptionsMenu(Menu menu) {           menu.add(0, 0, 0, "Refresh");           return super.onCreateOptionsMenu(menu);      }      public boolean onMenuItemSelected(int featureId, MenuItem item) {           mainWifi.startScan();           mainText.setText("Starting Scan");           return super.onMenuItemSelected(featureId, item);      }      protected void onPause() {           unregisterReceiver(receiverWifi);           super.onPause();      }      protected void onResume() {           registerReceiver(receiverWifi, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));           super.onResume();      }      class WifiReceiver extends BroadcastReceiver {           public void onReceive(Context c, Intent intent) {                sb = new StringBuilder();                wifiList = mainWifi.getScanResults();              for(int i = 0; i < wifiList.size(); i++){                sb.append(new Integer(i+1).toString() + ".");                sb.append((wifiList.get(i)).toString());                sb.append("\n");              }              mainText.setText(sb);           }      } }

同时需要申请如下权限java<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission> <uses-permission android:name="android.permission.ACCESS_CHECKIN_PROPERTIES"></uses-permission> <uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission> <uses-permission android:name="android.permission.INTERNET"></uses-permission> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission> <uses-permission android:name="android.permission.MODIFY_PHONE_STATE"></uses-permission>