我正在使用app，它会在点击按钮时开启/关闭热点。
如果我打开热点与app，当我打开另一个应用程序或得到任何通知热点自动关闭
我的代码：
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
*/
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();
}
private int setWifiApEnabled(boolean enabled) {
Log.d(TAG, "*** setWifiApEnabled CALLED **** " + enabled);
WifiConfiguration config = new WifiConfiguration();
config.SSID = "Aqual soul";
config.preSharedKey="aquasoul";
config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
config.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
//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;
}
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;
}
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;
public SetWifiAPTask(boolean mode, boolean finish, Context context) {
mMode = mode;
mFinish = finish;
d = new ProgressDialog(context);
}
@Override
protected void onPreExecute() {
super.onPreExecute();
d.setTitle("Turning WiFi AP " + (mMode?"on":"off") + "...");
d.setMessage("...please wait a moment.");
d.show();
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
try {
d.dismiss();
MainActivity.updateStatusDisplay();
} catch (IllegalArgumentException e) {
};
if (mFinish){
finish();
}
}
@Override
protected Void doInBackground(Void... params) {
setWifiApEnabled(mMode);
return null;
}
}
}