W moim Projekcie mam Map.First Idę do pozycji routera Wifi, skanuję listę wifi i wybieram Operator2 i Mark it.Następnie idę do innej pozycji zbierać Same Poprzednie Operator2 szczegóły (nie), a następnie Idę inną pozycją, powtórz to jeszcze raz.Jak uzyskać zaznaczenie tego samego operatora wifi z listy Wi-Fi ponownie w systemie Android?
Potrafię pierwszy raz wybrać Operatora Wi-Fi. Czas wtórny Nie wiem Jak zablokować Określone poprzednio wybrane szczegóły Operatora i uzyskać szczegóły operatora ponownie. Tak Proszę, pomóż mi rozwiązać ten problem.
mój kod:
public class WifiReceiver extends BroadcastReceiver {
private WifiManager wifiManager;
private PlanMapperActivity viewerActivity;
private Context newContext;
private String operator;
private String macAddress;
private int signalStrength;
private String wifiMode;
private int frequency;
private String htMode;
private String security;
private int channelNumber;
private AlertDialog wifiAlertDialog;
private ListView wifiListView;
private ProgressDialog progress;
private Boolean checkWifiSelected;
private Boolean checkServayStart;
private String operatorName;
List<ScanResult> wifiSRList;
private static final String WPA2 = "WPA2";
private static final String WEP = "WEP";
private static final String EAP = "EAP";
private static final String STORED_OPERATOR = "com.kenturf.wifiheatmap.SELECTED_OPERATOR";
private int requiredLevel;
private int ssidCount;
public WifiReceiver(Context ctx,PlanMapperActivity planMapper) {
this.viewerActivity = planMapper;
this.newContext = ctx;
}
public WifiReceiver(WifiManager myWifiManager,ProgressDialog wifiProgress,Boolean isWifiSelected,Boolean isSurveyStart) {
this.wifiManager = myWifiManager;
this.progress = wifiProgress;
this.checkWifiSelected = isWifiSelected;
this.checkServayStart = isSurveyStart;
}
@Override
public void onReceive(final Context context, Intent intent) {
wifiSRList = wifiManager.getScanResults();
if (wifiSRList.size() == 0) {
Toast.makeText(context,"wifi List 0",Toast.LENGTH_SHORT).show();
}
if (checkWifiSelected) {
LayoutInflater wifiLayout = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View wifiView = wifiLayout.inflate(R.layout.dialog_fragment_wifi,null);
AlertDialog.Builder wifiDialog = new AlertDialog.Builder(context);
wifiDialog.setCancelable(false);
wifiDialog.setView(wifiView);
wifiAlertDialog = wifiDialog.create();
wifiListView = (ListView)wifiView.findViewById(R.id.user_wifi_detail);
}
Collections.sort(wifiSRList, new Comparator<ScanResult>() {
@Override
public int compare(ScanResult lhs, ScanResult rhs) {
return (lhs.level > rhs.level ? -1 : (lhs.level == rhs.level ? 0 : 1));
}
});
if (checkWifiSelected) {
String[] wifiListString = new String[wifiSRList.size()];
for (int i = 0; i < wifiSRList.size(); i++) {
wifiListString[i] = (wifiSRList.get(i).SSID);
}
wifiListView.setAdapter(new ArrayAdapter<>(context, android.R.layout.simple_list_item_1, wifiListString));
wifiAlertDialog.show();
progress.dismiss();
wifiListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
operator = wifiSRList.get(position).SSID;
macAddress = wifiSRList.get(position).BSSID;
signalStrength = wifiSRList.get(position).level;
frequency = wifiSRList.get(position).frequency;
final String cap = wifiSRList.get(position).capabilities;
final String[] securityModes = {WEP, WPA2, EAP};
for (int i = securityModes.length - 1; i >= 0; i--) {
if (cap.contains(securityModes[i])) {
security = securityModes[i];
}
}
setOperator(operator);
GetSetClass.wifiOperator = operator;
/* error start ..cannot resolved method getPreferences() */
SharedPreferences sharedPref = context.getPreferences(Context.MODE_PRIVATE); // error line
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString(STORED_OPERATOR, operator);
editor.apply();
/* error end */
operatorName = operator;
setMacAddress(macAddress);
setSignalStrength(signalStrength);
setFrequency(frequency);
setSecurity(security);
setChannelNumber(convertFrequencyToChannel(frequency));
wifiAlertDialog.dismiss();
checkWifiSelected = false;
}
});
}
if(checkServayStart) {
/* error start ..cannot resolved method getPreferences()*/
SharedPreferences shPref = context.getPreferences(Context.MODE_PRIVATE); // error line
String savedOperator = shPref.getString(STORED_OPERATOR,null);
Log.e("operator : ", "saved operator is : " + savedOperator);
/* error end */
if (wifiSRList != null) {
ssidCount = wifiSRList.size();
for(int i = wifiSRList.size() - 1; i >= 0; i--) {
if (GetSetClass.wifiOperator.equals(wifiSRList.get(i).SSID)) {
String requiredOperator = wifiSRList.get(i).SSID;
requiredLevel = wifiSRList.get(i).level;
context.unregisterReceiver(this);
AlertDialog.Builder myBuilder = new AlertDialog.Builder(context);
setRequiredLevel(requiredLevel);
myBuilder.setTitle("Current Signal");
myBuilder.setMessage("Operator : " + requiredOperator + " \n\nSignal Strength : " + requiredLevel + " dBm");
myBuilder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
myBuilder.show();
} else {
Toast.makeText(context,"Operator Mismatch",Toast.LENGTH_SHORT).show();
}
}
progress.dismiss();
}
}
}
public static int convertFrequencyToChannel(int freq) {
if (freq >= 2412 && freq <= 2484) {
return (freq - 2412)/5 + 1;
} else if (freq >= 5170 && freq <= 5825) {
return (freq - 5170)/5 + 34;
} else {
return -1;
}
}
}
AKTUALIZACJA ODPOWIEDŹ:
private static final String STORED_FILE = "com.package.name.SELECTED_FILE";
private static final String STORED_OPERATOR = "com.package.name.SELECTED_OPERATOR";
Zapisywanie danych do SharedPreferences:
SharedPreferences sharedPref = context.getSharedPreferences(STORED_FILE,Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString(STORED_OPERATOR, operator);
editor.apply();
Uzyskaj dane z SharedPreferences:
SharedPreferences shPref = context.getSharedPreferences(STORED_FILE,Context.MODE_PRIVATE);
String savedOperator = shPref.getString(STORED_OPERATOR,null);
Log.e("operator : ", "saved operator is : " + savedOperator);
Czy moja odpowiedź Ci pomogła? Jeśli nie, wyjaśnij dlaczego, pozostawiając komentarz do odpowiedzi. –
Zaktualizowano odpowiedź, aby pomóc w utrzymaniu SharedPreferences poza działaniem. Mam nadzieję, że to pomoże. –