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[英]Android Application to scan wifi aps and display them in list view
[英]Android: trouble in understanding wifi receiver and adapter concepts used to scan WiFi APs and list them in listview
public class MainActivity extends AppCompatActivity implements View.OnClickListener, CompoundButton.OnCheckedChangeListener{
// Declare View variables
private Button mRefreshButton;
private Switch mWifiSwitch;
private ListView mAPListView;
private List<ScanResult> mWifiList;
private List<String> mListOfProviders;
private ListAdapter mAdapter;
private WifiManager mWifiManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mListOfProviders = new ArrayList<String>();
mAPListView = (ListView) findViewById(R.id.APListView);
mRefreshButton = (Button) findViewById(R.id.refreshButton);
mWifiSwitch = (Switch) findViewById(R.id.WiFiSwitch);
mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
boolean wasEnabled = mWifiManager.isWifiEnabled();
if (wasEnabled){
mWifiSwitch.setChecked(true);
}
mWifiSwitch.setOnCheckedChangeListener(this);
//wifiReciever = new WifiScanReceiver();
mWifiManager.startScan();
mWifiList = mWifiManager.getScanResults();
}
@Override
public void onClick(View view)
{
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked){
mWifiManager.setWifiEnabled(true);
}
else {
mWifiManager.setWifiEnabled(false);
}
}
}
我对Android开发非常陌生,只是构建一个Android应用程序来扫描可用的AP并列出它们。
但是,我在理解适配器和wifi接收器的概念和用法方面遇到了麻烦,这些接收器最常用于构建这些功能。
在开始扫描后,您能帮我解决实际存储和显示AP信息的问题吗?
谢谢。
您已经创建了ListView
并生成了可用连接列表,因此您的大部分工作都已完成。 剩下要做的是使用列表中的对象填充ListView
,为此需要使用适配器。
但首先,您应该将连接的名称添加到您创建的List<String>
:
for ( ScanResult result : mWifiList ) {
mListOfProviders.add( result.SSID); //This will add the SSID of the connection
}
然后,您将此列表传递给ArrayAdapter
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, android.R.id.text1, mListOfProviders);
mAPListView.setAdapter(adapter);
祝好运 :)
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