android 搜索wifi信号并密码连接wifi源码下载

【实例截图】

【核心代码】

package com.example.controlpcpro;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;

import com.wifi.utils.WifiPswDialog;
import com.wifi.utils.WifiPswDialog.OnCustomDialogListener;
import com.wifi.utils.WifiUtils;

public class ControlPCMainActivity extends Activity {
	private String wifiPassword = null;
	private Button wifiSearchButton;
	private WifiUtils localWifiUtils;
	private List<ScanResult> wifiResultList;
	private List<String> wifiListString = new ArrayList<String>();
	private ListView wifiSearchListView;
	private ArrayAdapter<String> arrayWifiAdapter;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_control_pcmain);
		
		wifiSearchButton = (Button)findViewById(R.id.wifiSearchButton);
		WIFIButtonListener wifiButtonListener = new WIFIButtonListener();
		wifiSearchButton.setOnClickListener(wifiButtonListener);
		wifiSearchListView = (ListView)findViewById(R.id.wifiListView);
		arrayWifiAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,wifiListString);
		wifiSearchListView.setAdapter(arrayWifiAdapter);
		ListOnItemClickListener wifiListListener = new ListOnItemClickListener();
		wifiSearchListView.setOnItemClickListener(wifiListListener);
		
		localWifiUtils = new WifiUtils(ControlPCMainActivity.this);
	}

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

	class WIFIButtonListener implements OnClickListener{
		@Override
		public void onClick(View view) {
			// TODO Auto-generated method stub
			wifiListString.clear();
			localWifiUtils.WifiOpen();
			localWifiUtils.WifiStartScan();
			//0正在关闭,1WIFi不可用,2正在打开,3可用,4状态不可zhi
			while(localWifiUtils.WifiCheckState() != WifiManager.WIFI_STATE_ENABLED){//等待Wifi开启
				Log.i("WifiState",String.valueOf(localWifiUtils.WifiCheckState()));
			}
			try {
					Thread.sleep(3000);//休眠3s，不休眠则会在程序首次开启WIFI时候，处理getScanResults结果，wifiResultList.size()发生异常
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			wifiResultList = localWifiUtils.getScanResults();
			localWifiUtils.getConfiguration();
			if(wifiListString != null){
				Log.i("WIFIButtonListener","dataChange");
				scanResultToString(wifiResultList,wifiListString);
			}
		}
	}
	
	class ListOnItemClickListener implements OnItemClickListener{
		String wifiItemSSID = null;
		private View selectedItem;
		@Override
		public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
				long arg3) {
			// TODO Auto-generated method stub
			Log.i("ListOnItemClickListener","start");
			selectedItem = arg1;
			arg1.setBackgroundResource(R.color.gray);//点击的Item项背景设置
			String wifiItem = arrayWifiAdapter.getItem(arg2);//获得选中的设备
			String []ItemValue = wifiItem.split("--");
			wifiItemSSID = ItemValue[0]; 
			Log.i("ListOnItemClickListener",wifiItemSSID);
			int wifiItemId = localWifiUtils.IsConfiguration("\"" wifiItemSSID "\"");
			Log.i("ListOnItemClickListener",String.valueOf(wifiItemId));
			if(wifiItemId != -1){
				if(localWifiUtils.ConnectWifi(wifiItemId)){//连接指定WIFI
					arg1.setBackgroundResource(R.color.green);
				}
			}
			else{//没有配置好信息，配置
				WifiPswDialog pswDialog = new WifiPswDialog(ControlPCMainActivity.this,new OnCustomDialogListener() {
					@Override
					public void back(String str) {
						// TODO Auto-generated method stub
						wifiPassword = str;
						if(wifiPassword != null){
							int netId = localWifiUtils.AddWifiConfig(wifiResultList,wifiItemSSID, wifiPassword);
							Log.i("WifiPswDialog",String.valueOf(netId));
							if(netId != -1){
								localWifiUtils.getConfiguration();//添加了配置信息，要重新得到配置信息
								if(localWifiUtils.ConnectWifi(netId)){
									selectedItem.setBackgroundResource(R.color.green);
								}
							}
							else{
								Toast.makeText(ControlPCMainActivity.this, "网络连接错误", Toast.LENGTH_SHORT).show();
								selectedItem.setBackgroundResource(R.color.burlywood);
							}
						}
						else{
							selectedItem.setBackgroundResource(R.color.burlywood);
						}
					}
				});
				pswDialog.show();
			}
		}
	}
	//ScanResult类型转为String
	public void scanResultToString(List<ScanResult> listScan,List<String> listStr){
		for(int i = 0; i <listScan.size(); i  ){
			ScanResult strScan = listScan.get(i);
			String str = strScan.SSID "--" strScan.BSSID;
			boolean bool = listStr.add(str);
			if(bool){
				arrayWifiAdapter.notifyDataSetChanged();//数据更新,只能单个Item更新，不能够整体List更新
			}
			else{
				Log.i("scanResultToSting","fail");
			}
			Log.i("scanResultToString",listStr.get(i));
		}
	}
	/*private BroadcastReceiver WifiBroadcastRec = new BroadcastReceiver(){
	@Override
	public void onReceive(Context context, Intent intent) {
		// TODO Auto-generated method stub
		String wifiAction = intent.getAction();
		if(WifiManager.WIFI_STATE_CHANGED_ACTION.equals(wifiAction)){
			int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,WifiManager.WIFI_STATE_ENABLED);
			if(wifiState == WifiManager.WIFI_STATE_ENABLED){
				try {
					Thread.sleep(3000);//休眠3s，不休眠则会在程序首次开启WIFI时候，处理getScanResults结果，wifiResultList.size()发生异常
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				wifiResultList = localWifiUtils.getScanResults();
				localWifiUtils.getConfiguration();
				if(wifiListString != null){
					scanResultToString(wifiResultList,wifiListString);
				}
			}
		}  
	  }
	};*/
}