我已经创建了一个用于在 Android 设备上共享 WiFi 的应用程序，这是我的代码：
WiFiAo.java
package com.gado.wifihotspot;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.AsyncTask;
import android.util.Log;
import java.lang.reflect.Method;
import com.gado.wifihotspot.MainActivity;;
public class WifiAP extends Activity {
private static int constant = 0;
private static final int WIFI_AP_STATE_UNKNOWN = -1;
private static int WIFI_AP_STATE_DISABLING = 0;
private static int WIFI_AP_STATE_DISABLED = 1;
public int WIFI_AP_STATE_ENABLING = 2;
public int WIFI_AP_STATE_ENABLED = 3;
private static int WIFI_AP_STATE_FAILED = 4;
private final String[] WIFI_STATE_TEXTSTATE = new String[] {
"DISABLING","DISABLED","ENABLING","ENABLED","FAILED"
};
private WifiManager wifi;
private String TAG = "WifiAP";
private int stateWifiWasIn = -1;
private boolean alwaysEnableWifi = true; //set to false if you want to try and set wifi state back to what it was before wifi ap enabling, true will result in the wifi always being enabled after wifi ap is disabled
/**
* Toggle the WiFi AP state
* @param wifihandler
* @author http://stackoverflow.com/a/7049074/1233435
*/
public void toggleWiFiAP(WifiManager wifihandler, Context context) {
if (wifi==null){
wifi = wifihandler;
}
boolean wifiApIsOn = getWifiAPState()==WIFI_AP_STATE_ENABLED || getWifiAPState()==WIFI_AP_STATE_ENABLING;
new SetWifiAPTask(!wifiApIsOn,false,context).execute();
}
/**
* Enable/disable wifi
* @param true or false
* @return WifiAP state
* @author http://stackoverflow.com/a/7049074/1233435
*/
private int setWifiApEnabled(boolean enabled) {
Log.d(TAG, "*** setWifiApEnabled CALLED **** " + enabled);
WifiConfiguration config = new WifiConfiguration();
config.SSID = "My AP";
config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
//remember wirelesses current state
if (enabled && stateWifiWasIn==-1){
stateWifiWasIn=wifi.getWifiState();
}
//disable wireless
if (enabled && wifi.getConnectionInfo() !=null) {
Log.d(TAG, "disable wifi: calling");
wifi.setWifiEnabled(false);
int loopMax = 10;
while(loopMax>0 && wifi.getWifiState()!=WifiManager.WIFI_STATE_DISABLED){
Log.d(TAG, "disable wifi: waiting, pass: " + (10-loopMax));
try {
Thread.sleep(500);
loopMax--;
} catch (Exception e) {
}
}
Log.d(TAG, "disable wifi: done, pass: " + (10-loopMax));
}
//enable/disable wifi ap
int state = WIFI_AP_STATE_UNKNOWN;
try {
Log.d(TAG, (enabled?"enabling":"disabling") +" wifi ap: calling");
wifi.setWifiEnabled(false);
Method method1 = wifi.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);
//method1.invoke(wifi, null, enabled); // true
method1.invoke(wifi, config, enabled); // true
Method method2 = wifi.getClass().getMethod("getWifiApState");
state = (Integer) method2.invoke(wifi);
} catch (Exception e) {
Log.e(WIFI_SERVICE, e.getMessage());
// toastText += "ERROR " + e.getMessage();
}
//hold thread up while processing occurs
if (!enabled) {
int loopMax = 10;
while (loopMax>0 && (getWifiAPState()==WIFI_AP_STATE_DISABLING || getWifiAPState()==WIFI_AP_STATE_ENABLED || getWifiAPState()==WIFI_AP_STATE_FAILED)) {
Log.d(TAG, (enabled?"enabling":"disabling") +" wifi ap: waiting, pass: " + (10-loopMax));
try {
Thread.sleep(500);
loopMax--;
} catch (Exception e) {
}
}
Log.d(TAG, (enabled?"enabling":"disabling") +" wifi ap: done, pass: " + (10-loopMax));
//enable wifi if it was enabled beforehand
//this is somewhat unreliable and app gets confused and doesn't turn it back on sometimes so added toggle to always enable if you desire
if(stateWifiWasIn==WifiManager.WIFI_STATE_ENABLED || stateWifiWasIn==WifiManager.WIFI_STATE_ENABLING || stateWifiWasIn==WifiManager.WIFI_STATE_UNKNOWN || alwaysEnableWifi){
Log.d(TAG, "enable wifi: calling");
wifi.setWifiEnabled(true);
//don't hold things up and wait for it to get enabled
}
stateWifiWasIn = -1;
} else if (enabled) {
int loopMax = 10;
while (loopMax>0 && (getWifiAPState()==WIFI_AP_STATE_ENABLING || getWifiAPState()==WIFI_AP_STATE_DISABLED || getWifiAPState()==WIFI_AP_STATE_FAILED)) {
Log.d(TAG, (enabled?"enabling":"disabling") +" wifi ap: waiting, pass: " + (10-loopMax));
try {
Thread.sleep(500);
loopMax--;
} catch (Exception e) {
}
}
Log.d(TAG, (enabled?"enabling":"disabling") +" wifi ap: done, pass: " + (10-loopMax));
}
return state;
}
/**
* Get the wifi AP state
* @return WifiAP state
* @author http://stackoverflow.com/a/7049074/1233435
*/
public int getWifiAPState() {
int state = WIFI_AP_STATE_UNKNOWN;
try {
Method method2 = wifi.getClass().getMethod("getWifiApState");
state = (Integer) method2.invoke(wifi);
} catch (Exception e) {
}
if(state>=10){
//using Android 4.0+ (or maybe 3+, haven't had a 3 device to test it on) so use states that are +10
constant=10;
}
//reset these in case was newer device
WIFI_AP_STATE_DISABLING = 0+constant;
WIFI_AP_STATE_DISABLED = 1+constant;
WIFI_AP_STATE_ENABLING = 2+constant;
WIFI_AP_STATE_ENABLED = 3+constant;
WIFI_AP_STATE_FAILED = 4+constant;
Log.d(TAG, "getWifiAPState.state " + (state==-1?"UNKNOWN":WIFI_STATE_TEXTSTATE[state-constant]));
return state;
}
/**
* the AsyncTask to enable/disable the wifi ap
* @author http://stackoverflow.com/a/7049074/1233435
*/
class SetWifiAPTask extends AsyncTask<Void, Void, Void> {
boolean mMode; //enable or disable wifi AP
boolean mFinish; //finalize or not (e.g. on exit)
ProgressDialog d;
/**
* enable/disable the wifi ap
* @param mode enable or disable wifi AP
* @param finish finalize or not (e.g. on exit)
* @param context the context of the calling activity
* @author http://stackoverflow.com/a/7049074/1233435
*/
public SetWifiAPTask(boolean mode, boolean finish, Context context) {
mMode = mode;
mFinish = finish;
d = new ProgressDialog(context);
}
/**
* do before background task runs
* @author http://stackoverflow.com/a/7049074/1233435
*/
@Override
protected void onPreExecute() {
super.onPreExecute();
d.setTitle("Turning WiFi Tethering " + (mMode?"on":"off") + "...");
d.setMessage("...please wait a moment.");
d.show();
}
/**
* do after background task runs
* @param aVoid
* @author http://stackoverflow.com/a/7049074/1233435
*/
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
try {
d.dismiss();
MainActivity.updateStatusDisplay();
} catch (IllegalArgumentException e) {
};
if (mFinish){
finish();
}
}
/**
* the background task to run
* @param params
* @author http://stackoverflow.com/a/7049074/1233435
*/
@Override
protected Void doInBackground(Void... params) {
setWifiApEnabled(mMode);
return null;
}
}
}
MainActivity.java
package com.gado.wifihotspot;
import android.app.Activity;
import android.content.Context;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.view.View;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.ImageButton;
public class MainActivity extends Activity {
boolean wasAPEnabled = false;
static WifiAP wifiAp;
private WifiManager wifi;
static ImageButton btnWifiToggle;
static CheckBox checkencrypted;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnWifiToggle = (ImageButton) findViewById(R.id.btnWifiToggle);
checkencrypted = (CheckBox) findViewById(R.id.checkBox1);
wifiAp = new WifiAP();
wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
btnWifiToggle.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
wifiAp.toggleWiFiAP(wifi, MainActivity.this);
}
});
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD|WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON|WindowManager.LayoutParams.FLAG_DIM_BEHIND);
}
@Override
public void onResume() {
super.onResume();
if (wasAPEnabled) {
if (wifiAp.getWifiAPState()!=wifiAp.WIFI_AP_STATE_ENABLED && wifiAp.getWifiAPState()!=wifiAp.WIFI_AP_STATE_ENABLING){
wifiAp.toggleWiFiAP(wifi, MainActivity.this);
}
}
updateStatusDisplay();
}
@Override
public void onPause() {
super.onPause();
boolean wifiApIsOn = wifiAp.getWifiAPState()==wifiAp.WIFI_AP_STATE_ENABLED || wifiAp.getWifiAPState()==wifiAp.WIFI_AP_STATE_ENABLING;
if (wifiApIsOn) {
wasAPEnabled = true;
wifiAp.toggleWiFiAP(wifi, MainActivity.this);
} else {
wasAPEnabled = false;
}
updateStatusDisplay();
}
public static void updateStatusDisplay() {
if (wifiAp.getWifiAPState()==wifiAp.WIFI_AP_STATE_ENABLED || wifiAp.getWifiAPState()==wifiAp.WIFI_AP_STATE_ENABLING) {
btnWifiToggle.setImageResource(R.drawable.off);
//findViewById(R.id.bg).setBackgroundResource(R.drawable.bg_wifi_on);
} else {
btnWifiToggle.setImageResource(R.drawable.on);
//findViewById(R.id.bg).setBackgroundResource(R.drawable.bg_wifi_off);
}
}
}
现在我想为这个网络共享和 WiFi 热点名称添加加密，但我不知道如何做到这一点？
以这种方式更新setWifiApEnabled方法。该方法提供对您的应用程序的开放、WPA和WPA2访问。
private int setWifiApEnabled(boolean enabled) {
Log.d(TAG, "*** setWifiApEnabled CALLED **** " + enabled);
WifiConfiguration config = new WifiConfiguration();
config.SSID = "My AP";
//changes added here
config.preSharedKey="yourpassword";//enter the set password here
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
......
您还可以针对不同的 KeyMgmt 尝试 WPA_EAP；
参考：
将其留给操作系统，并使用 WifiConfiguration.Protocol - 在那里您可以将其设置为 WPA
更多信息在这里： http://developer.android.com/reference/android/net/wifi/WifiConfiguration.html