我希望创建一个应用程序，它可以检测附近的可用wifi连接，然后连接到它们。我到目前为止所做的是，我创建了一个ListView，列出了可用的wifi连接，然后我创建了一个LongItemClick对话框，显示了网络的SSID和BSSID，并要求输入密码。
现在，我希望连接到其中一个网络，不管它是什么类型的网络，它也可能是WEP，WPA或Open。我无法概述如何连接它们。谁能帮我这个 ？
我搜索了所有可用的答案，但我没有找到任何答案，这可以帮助我做到这一点！
编辑： - 我通过以下方法尝试上述事情。我创建了附近所有可用的Wi-Fi网络的列表视图，然后我尝试在长按时显示连接信息，并通过点击提供连接到点击的Wi-Fi网络的选项。
package com.example.random;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.FragmentManager;
import android.app.ListActivity;
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.WifiConfiguration;
import android.net.wifi.WifiConfiguration.AuthAlgorithm;
import android.net.wifi.WifiConfiguration.GroupCipher;
import android.net.wifi.WifiConfiguration.KeyMgmt;
import android.net.wifi.WifiConfiguration.PairwiseCipher;
import android.net.wifi.WifiConfiguration.Protocol;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends FragmentActivity implements OnClickListener
{
WifiManager wifi;
ListView lv;
// TextView textStatus;
Button buttonScan;
int size = 0;
List<ScanResult> results;
final Context context = this;
EditText pass;
String checkPassword = null;
String ITEM_KEY = "key";
ArrayList<HashMap<String, String>> arraylist = new ArrayList<HashMap<String, String>>();
SimpleAdapter adapter;
/* Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// textStatus = (TextView) findViewById(R.id.textStatus);
buttonScan = (Button) findViewById(R.id.buttonScan);
buttonScan.setOnClickListener(this);
lv = (ListView)findViewById(R.id.list);
lv.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
connectToWifi(arg2);
}
private void connectToWifi(final int position)
{
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.connect);
dialog.setTitle("Connect to Network");
TextView textSSID = (TextView) dialog.findViewById(R.id.textSSID);
TextView textBSSID = (TextView) dialog.findViewById(R.id.textBSSID);
TextView capabilities = (TextView) dialog.findViewById(R.id.textCapabilities);
Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
pass = (EditText) dialog.findViewById(R.id.textPassword);
textSSID.setText(results.get(position).SSID);
textBSSID.setText(results.get(position).BSSID);
capabilities.setText(results.get(position).capabilities);
// textBSSID.setText(results.get(position).BSSID);
// textBSSID.setText(results.get(position).BSSID);
//
// if button is clicked, connect to the network;
dialogButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
checkPassword = pass.getText().toString();
finallyConnect(checkPassword);
dialog.dismiss();
}
private void finallyConnect(String checkPassword) {
String networkSSID = results.get(position).SSID;
String networkPass = checkPassword;
WifiConfiguration conf = new WifiConfiguration();
conf.SSID = "\"" + networkSSID + "\""; // Please note the quotes. String should contain ssid in quotes
conf.preSharedKey = "\""+ networkPass +"\"";
WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);
wifiManager.addNetwork(conf);
List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for( WifiConfiguration i : list ) {
if(i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
wifiManager.disconnect();
if(wifiManager.enableNetwork(i.networkId, true)==true){
wifiManager.enableNetwork(i.networkId, true);
wifiManager.reconnect();
int ipAddress = wifiManager.getConnectionInfo().getIpAddress();
Toast.makeText(getApplicationContext(), ipAddress, Toast.LENGTH_SHORT).show();
Toast.makeText(getApplicationContext(), networkSSID + "Connection successful", Toast.LENGTH_SHORT).show();
}
else{
Toast.makeText(getApplicationContext(), "Connection Failed", Toast.LENGTH_SHORT).show();
}
break;
}
}
}
});
dialog.show();
}
});
lv.setOnItemLongClickListener(new OnItemLongClickListener(){
@Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
showWifiSettings(arg2);
return true;
}
private void showWifiSettings(int arg2) {
showDialogOfOptions(arg2);
}
private void showDialogOfOptions(int arg2) {
// Create a custom Dialog
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.custom);
dialog.setTitle("Network details");
TextView textSSID = (TextView) dialog.findViewById(R.id.textSSID);
TextView textBSSID = (TextView) dialog.findViewById(R.id.textBSSID);
Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
textSSID.setText(results.get(arg2).SSID);
textBSSID.setText(results.get(arg2).BSSID);
// if button is clicked, close the custom dialog
dialogButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.show();
}
});
wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if (wifi.isWifiEnabled() == false)
{
Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled", Toast.LENGTH_LONG).show();
wifi.setWifiEnabled(true);
}
this.adapter = new SimpleAdapter(MainActivity.this, arraylist, R.layout.row, new String[] { ITEM_KEY }, new int[] { R.id.list_value });
lv.setAdapter(this.adapter);
registerReceiver(new BroadcastReceiver()
{
@Override
public void onReceive(Context c, Intent intent)
{
results = wifi.getScanResults();
size = results.size();
}
}, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
}
public void onClick(View view)
{
arraylist.clear();
wifi.startScan();
Toast.makeText(this, "Scanning...." + size, Toast.LENGTH_SHORT).show();
try
{
size = size - 1;
while (size >= 0)
{
HashMap<String, String> item = new HashMap<String, String>();
item.put(ITEM_KEY, results.get(size).SSID.toString()+ results.get(size).capabilities.toString());
arraylist.add(item);
size--;
adapter.notifyDataSetChanged();
}
}
catch (Exception e)
{ }
}
}
当我尝试获取当前连接网络的IP地址时，代码当前出错。 logcat的：
06-30 18:20:02.515: E/AndroidRuntime(4564): FATAL EXCEPTION: main
06-30 18:20:02.515: E/AndroidRuntime(4564): Process: com.example.random, PID: 4564
06-30 18:20:02.515: E/AndroidRuntime(4564): java.lang.IndexOutOfBoundsException: Invalid index 6, size is 5
06-30 18:20:02.515: E/AndroidRuntime(4564): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
06-30 18:20:02.515: E/AndroidRuntime(4564): at java.util.ArrayList.get(ArrayList.java:308)
06-30 18:20:02.515: E/AndroidRuntime(4564): at com.example.random.MainActivity$1.connectToWifi(MainActivity.java:95)
06-30 18:20:02.515: E/AndroidRuntime(4564): at com.example.random.MainActivity$1.onItemClick(MainActivity.java:79)
06-30 18:20:02.515: E/AndroidRuntime(4564): at android.widget.AdapterView.performItemClick(AdapterView.java:299)
06-30 18:20:02.515: E/AndroidRuntime(4564): at android.widget.AbsListView.performItemClick(AbsListView.java:1113)
06-30 18:20:02.515: E/AndroidRuntime(4564): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2904)
06-30 18:20:02.515: E/AndroidRuntime(4564): at android.widget.AbsListView$3.run(AbsListView.java:3638)
06-30 18:20:02.515: E/AndroidRuntime(4564): at android.os.Handler.handleCallback(Handler.java:733)
06-30 18:20:02.515: E/AndroidRuntime(4564): at android.os.Handler.dispatchMessage(Handler.java:95)
06-30 18:20:02.515: E/AndroidRuntime(4564): at android.os.Looper.loop(Looper.java:136)
06-30 18:20:02.515: E/AndroidRuntime(4564): at android.app.ActivityThread.main(ActivityThread.java:5017)
06-30 18:20:02.515: E/AndroidRuntime(4564): at java.lang.reflect.Method.invokeNative(Native Method)
06-30 18:20:02.515: E/AndroidRuntime(4564): at java.lang.reflect.Method.invoke(Method.java:515)
06-30 18:20:02.515: E/AndroidRuntime(4564): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
06-30 18:20:02.515: E/AndroidRuntime(4564): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
06-30 18:20:02.515: E/AndroidRuntime(4564): at dalvik.system.NativeStart.main(Native Method)
当当前单击列表项时，应用程序不提供连接到任何wifi网络的选项，而当未添加wifiManager.getConfiguredNetworks().getIpAddress方法时，它用于显示Toast行{ {1}}，这意味着Connection Successful是真的，但它仍未连接到网络。
任何帮助？
答案 0 :(得分：0)
此代码有效。它搜索可用的WiFi列表并将其显示在列表视图中，然后单击列表视图，将出现一个对话框，显示要输入的SSID，BSSID和密码。
MainActivity：
str.substring(str.indexOf("begin:")+6).trim()
XML文件：
import android.annotation.SuppressLint;
import android.app.Dialog;
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.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private WifiManager wifi;
WifiScanReceiver wifiReciever;
private ListView lv;
// TextView textStatus;
private Button buttonScan;
private int size = 0;
private List<ScanResult> results;
private final Context context = this;
private EditText pass;
private String checkPassword = null;
private String ITEM_KEY = "key";
private ArrayList<HashMap<String, String>> arraylist = new ArrayList<HashMap<String, String>>();
private SimpleAdapter adapter;
String wifis[];
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
buttonScan = (Button) findViewById(R.id.buttonScan);
buttonScan.setOnClickListener(this);
lv = (ListView) findViewById(R.id.list);
wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
wifiReciever = new WifiScanReceiver();
wifi.startScan();
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
connectToWifi(arg2);
}
});
lv.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
showWifiSettings(arg2);
return true;
}
});
if (wifi.isWifiEnabled() == false) {
Toast.makeText(getApplicationContext(),
"wifi is disabled..making it enabled", Toast.LENGTH_LONG)
.show();
wifi.setWifiEnabled(true);
}
this.adapter = new SimpleAdapter(MainActivity.this, arraylist,
R.layout.custom , new String[] { ITEM_KEY }, //concentrate
new int[] { R.id.list });
lv.setAdapter(adapter);
registerReceiver(new BroadcastReceiver() {
@Override
public void onReceive(Context c, Intent intent) {
results = wifi.getScanResults();
size = results.size();
}
}, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
}
@Override
public void onClick(View view) {
//arraylist.clear();
wifi.startScan();
Toast.makeText(this, "Scanning...." + size, Toast.LENGTH_SHORT).show();
try {
size = size - 1;
while (size >= 0) {
HashMap<String, String> item = new HashMap<String, String>();
item.put(ITEM_KEY,
results.get(size).SSID.toString()
+ results.get(size).capabilities.toString());
arraylist.add(item);
size--;
adapter.notifyDataSetChanged();
}
} catch (Exception e) {
}
}
protected void onPause() {
unregisterReceiver(wifiReciever);
super.onPause();
}
protected void onResume() {
registerReceiver(wifiReciever, new IntentFilter(
WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
super.onResume();
}
class WifiScanReceiver extends BroadcastReceiver {
@SuppressLint("UseValueOf")
public void onReceive(Context c, Intent intent) {
List<ScanResult> wifiScanList = wifi.getScanResults();
wifis = new String[wifiScanList.size()];
for(int i = 0; i < wifiScanList.size(); i++){
wifis[i] = ((wifiScanList.get(i)).toString());
}
String filtered[] = new String[wifiScanList.size()];
int counter = 0;
for (String eachWifi : wifis) {
String[] temp = eachWifi.split(",");
filtered[counter] = temp[0].substring(5).trim()+"\n" + temp[2].substring(12).trim()+"\n" +temp[3].substring(6).trim();//0->SSID, 2->Key Management 3-> Strength
counter++;
}
lv.setAdapter(new ArrayAdapter<String>(getApplicationContext(),
android.R.layout.simple_list_item_1, filtered));
}
}
private void showWifiSettings(int arg2) {
showDialogOfOptions(arg2);
}
private void showDialogOfOptions(int arg2) {
// Create a custom Dialog
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.custom);
dialog.setTitle("Network details");
TextView textSSID = (TextView) dialog.findViewById(R.id.textSSID1);
TextView textBSSID = (TextView) dialog.findViewById(R.id.textBSSID1);
Button dialogButton = (Button) dialog.findViewById(R.id.okButton);
textSSID.setText(results.get(arg2).SSID);
textBSSID.setText(results.get(arg2).BSSID);
// if button is clicked, close the custom dialog
dialogButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.show();
}
private void finallyConnect(String checkPassword, int position) {
String networkSSID = results.get(position).SSID;
String networkPass = checkPassword;
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = String.format("\"%s\"", networkSSID);
wifiConfig.preSharedKey = String.format("\"%s\"", networkPass);
// remember id
int netId = wifi.addNetwork(wifiConfig);
wifi.disconnect();
wifi.enableNetwork(netId, true);
wifi.reconnect();
WifiConfiguration conf = new WifiConfiguration();
conf.SSID = "\"\"" + networkSSID + "\"\"";
conf.preSharedKey = "\"" + networkPass + "\"";
wifi.addNetwork(conf);
}
private void connectToWifi(final int position) {
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.custom);
dialog.setTitle("Connect to Network");
TextView textSSID = (TextView) dialog.findViewById(R.id.textSSID1);
TextView textBSSID = (TextView) dialog.findViewById(R.id.textBSSID1);
TextView capabilities = (TextView) dialog
.findViewById(R.id.textCapabilities);
Button dialogButton = (Button) dialog.findViewById(R.id.okButton);
pass = (EditText) dialog.findViewById(R.id.textPassword);
textSSID.setText(results.get(position).SSID);
textBSSID.setText(results.get(position).BSSID);
capabilities.setText(results.get(position).capabilities);
//
// if button is clicked, connect to the network;
dialogButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
checkPassword = pass.getText().toString();
finallyConnect(checkPassword, position);
dialog.dismiss();
}
});
dialog.show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}