嗯,这并不容易;-)

有几件事情遗失了……

这是一个wifi扫描的例子 – 原始源代码位于这里

http://www.androidsnippets.com/scan-for-wireless-networks

package com.android.wifitester;

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 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);

}

}

}