连接Wifi

cjcmay

public interface ScanWiFIScanListener {
void scanList(List<INfo> list);
}

public class INfo {
String ssid;//
    String capabilities;//
    String bssid;//
    int level;//信号强度-20到0是最强的
public String getSsid() {
return ssid;
}
public void setSsid(String ssid) {
this.ssid = ssid;
}
public String getCapabilities() {
return capabilities;
}
public void setCapabilities(String capabilities) {
this.capabilities = capabilities;
}
public String getBssid() {
return bssid;
}
public void setBssid(String bssid) {
this.bssid = bssid;
}
public int getLevel() {
return level;
}
public void setLevel(int level) {
this.level = level;
}
@Override
public String toString() {
return "INfo [ssid=" + ssid + ", capabilities=" + capabilities
+ ", bssid=" + bssid + ", level=" + level + "]";
}
}

public class MyB extends BroadcastReceiver{
WifiManager wifiManager;
ScanWiFIScanListener listener;//传到activity那边
public ScanWiFIScanListener getListener() {
return listener;
}
public void setListener(ScanWiFIScanListener listener) {
this.listener = listener;
}
//拿到收到的wifi
public MyB(WifiManager wifiManager) {
super();
this.wifiManager = wifiManager;
}
@Override
public void onReceive(Context context, Intent intent) {
Log.i("INFO", "wifi is founded");
//动态注册，代码注册
//通过意图拿
List<ScanResult> list= wifiManager.getScanResults();
List<INfo> infos=new ArrayList<INfo>();
for (ScanResult scanResult : list) {
Log.i("INFO", scanResult.SSID);
//没每个实体赋值添加到集合
INfo info=new INfo();
info.setBssid(scanResult.BSSID);
info.setCapabilities(scanResult.capabilities);
info.setLevel(scanResult.level);
infos.add(info);
}
//蓝牙是异步扫描，wifi是同步扫描，一下子扫到
        listener.scanList(infos);
}
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater=(LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View vv=inflater.inflate(R.layout.list_item, null);
TextView tv_ssid=(TextView) vv.findViewById(R.id.tv_ssid);
TextView tv_bbid=(TextView) vv.findViewById(R.id.tv_bbid);
TextView tv_p=(TextView) vv.findViewById(R.id.tv_p);
ImageView iv_level=(ImageView) vv.findViewById(R.id.iv_level);
iNfo=list.get(position);
tv_ssid.setText(iNfo.getSsid());
tv_bbid.setText(iNfo.getBssid());
tv_p.setText(iNfo.getCapabilities());
//判断level在那个区间
//drawable
int level = iNfo.getLevel();
iv_level.setImageResource(R.drawable.image_level);
if(-100<level&&level<-80){
iv_level.setImageLevel(0);
}else if(level<-60){
iv_level.setImageLevel(1);
}else if(level<-40){
iv_level.setImageLevel(2);
}else if(level<-20){
iv_level.setImageLevel(3);
}else{
iv_level.setImageLevel(4);
}
//img.setImageLevel(0);
return vv;
}

public class MainActivity extends Activity implements ScanWiFIScanListener {
ListView lv;
MyB b;
WifiManager wifiManager;
MyAdapter adapter;
List<INfo> list;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lv = (ListView) findViewById(R.id.lv);
wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);
b = new MyB(wifiManager);
b.setListener(this);//
        List<INfo> list = new ArrayList<INfo>();
adapter = new MyAdapter(this, list);
lv.setAdapter(adapter);
}
public void scanwifi(View v) {
if (!wifiManager.isWifiEnabled()) {// 是否可用
wifiManager.setWifiEnabled(true);// 打开
        }
wifiManager.startScan();// 开始扫描
// 注册广播
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);// 扫描结果可用，可拿到
this.registerReceiver(b, intentFilter);
// 扫描到就放进去
        adapter.getList().clear();
adapter.notifyDataSetChanged();
}
@Override
public void scanList(List<INfo> list) {
// TODO Auto-generated method stub
// 设置给adapter,刷新listView
        adapter.setList(list);
adapter.notifyDataSetChanged();
}
}

　　

}