任何人都可以帮助我检查wifi套接字状态，即它是否与其他类/其他类服务连接。如果没有连接，那么如何连接到服务器。 以及如何检查wifi是否启用，如果没有，那么如何从其他服务类启用wifi。
package com.example.pci.calling;
import android.app.AlarmManager;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.PendingIntent;
import android.app.TimePickerDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.TimePicker;
import android.widget.Toast;
import android.widget.ToggleButton;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Calendar;
import java.util.List;
public class MainActivity extends AppCompatActivity {
static ToggleButton WiFiONOFFButton,ConnectWiFi;
WifiManager wifi;
WifiScanReceiver wifiReciever;
String networkSSID = "EasyControl";
String networkPass = "easy1234";
static Button Asend,Vsend,Dsend,Connect;
static InputStream nis;
static OutputStream nos;
static public Socket socket;
EditText editSend;
static TextView receivedata,Status;
public static Boolean socket_connect=false;
public static Boolean wifi_connect=false;
TextView textInfo;
final Context context = this;
Dialog dialog;
private PendingIntent pendingIntentOn,pendingIntentOff;
Calendar calOn,calOff;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ConnectWiFi = (ToggleButton) findViewById(R.id.connectwifi);
WiFiONOFFButton = (ToggleButton) findViewById(R.id.toggleButton);
Connect = (Button) findViewById(R.id.btnConnect1);
Vsend = (Button) findViewById(R.id.btnVsend);
Dsend = (Button) findViewById(R.id.btnDsend);
Asend = (Button) findViewById(R.id.btnAsend);
editSend = (EditText) findViewById(R.id.editSend);
Status = (TextView) findViewById(R.id.status);
receivedata = (TextView) findViewById(R.id.textView);
wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
wifi.setWifiEnabled(true);
wifiReciever = new WifiScanReceiver();
wifi.startScan();
ConnectWiFi.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
MyClienttask outer = new MyClienttask();
outer
.execute();
} else {
try {
nis.close();
nos.close();
socket.close();
} catch (Exception e) {
}
}
}
});
Vsend.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
datasend();
} catch (Exception e) {
}
}
});
Vsend.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
timer();
Intent myIntentOn = new Intent(MainActivity.this, AlarmDetails.class);
pendingIntentOn = PendingIntent.getService(MainActivity.this, 0, myIntentOn, 0);
Intent myIntentoff = new Intent(MainActivity.this, AlarmDetailsoff.class);
pendingIntentOff = PendingIntent.getService(MainActivity.this, 0, myIntentoff, 0);
return false;
}
});
if (wifi_connect==true){
wifiReciever = new WifiScanReceiver();
}
}
void datasend() throws IOException
{
nos.write("V".getBytes());
}
public void timer(){
dialog = new Dialog(context);
dialog.setContentView(R.layout.custom);
dialog.setTitle("Set Prefer Time And Date");
final RadioButton RadiobuttonOn = (RadioButton)dialog.findViewById(R.id.btn_radio_dialog_on);
final RadioButton RadiobuttonOff = (RadioButton)dialog.findViewById(R.id.btn_radio_dialog_off);
Button dialogOKbutton = (Button) dialog.findViewById(R.id.btn_dialog_ok);
Button dialogCANCELbutton = (Button) dialog.findViewById(R.id.btn_dialog_cancel);
final EditText txttime = (EditText) dialog.findViewById(R.id.dialog_time);
final EditText txtdate = (EditText) dialog.findViewById(R.id.dialog_date);
final Calendar newCalendar = Calendar.getInstance();
if(RadiobuttonOn.isChecked()==true) {
txtdate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Calendar newCalendar = Calendar.getInstance();
DatePickerDialog mDatePicker;
mDatePicker = new DatePickerDialog(MainActivity.this, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
Calendar calNow = Calendar.getInstance();
calOn = (Calendar) calNow.clone();
calOn.set(Calendar.DAY_OF_MONTH, dayOfMonth);
calOn.set(Calendar.MONTH, monthOfYear);
calOn.set(Calendar.YEAR, year);
txtdate.setText(dayOfMonth + "-" + (monthOfYear + 1) + "-" + year);
}
}, newCalendar.get(Calendar.YEAR), newCalendar.get(Calendar.MONTH), newCalendar.get(Calendar.DAY_OF_MONTH));
mDatePicker.setTitle("Select Date");
mDatePicker.show();
}
});
txttime.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Calendar mycalender = Calendar.getInstance();
int hour = newCalendar.get(Calendar.HOUR_OF_DAY);
int minute = newCalendar.get(Calendar.MINUTE);
TimePickerDialog mTimePicker;
mTimePicker = new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
txttime.setText(selectedHour + ":" + selectedMinute);
calOn.set(Calendar.HOUR_OF_DAY, selectedHour);
calOn.set(Calendar.MINUTE, selectedMinute);
calOn.set(Calendar.SECOND, 0);
}
}, hour, minute, true);//Yes 24 hour time
mTimePicker.setTitle("Select Time");
mTimePicker.show();
}
});
}
if (RadiobuttonOff.isChecked()==true){
txtdate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Calendar newCalendar = Calendar.getInstance();
DatePickerDialog mDatePicker;
mDatePicker = new DatePickerDialog(MainActivity.this, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
Calendar calNow = Calendar.getInstance();
calOff = (Calendar) calNow.clone();
calOff.set(Calendar.DAY_OF_MONTH, dayOfMonth);
calOff.set(Calendar.MONTH, monthOfYear);
calOff.set(Calendar.YEAR, year);
txtdate.setText(dayOfMonth + "-" + (monthOfYear + 1) + "-" + year);
}
}, newCalendar.get(Calendar.YEAR), newCalendar.get(Calendar.MONTH), newCalendar.get(Calendar.DAY_OF_MONTH));
mDatePicker.setTitle("Select Date");
mDatePicker.show();
}
});
txttime.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Calendar mycalender = Calendar.getInstance();
int hour = newCalendar.get(Calendar.HOUR_OF_DAY);
int minute = newCalendar.get(Calendar.MINUTE);
TimePickerDialog mTimePicker;
mTimePicker = new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
txttime.setText(selectedHour + ":" + selectedMinute);
calOff.set(Calendar.HOUR_OF_DAY, selectedHour);
calOff.set(Calendar.MINUTE, selectedMinute);
calOff.set(Calendar.SECOND, 0);
}
}, hour, minute, true);//Yes 24 hour time
mTimePicker.setTitle("Select Time");
mTimePicker.show();
}
});
}
dialogOKbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "Start Alarm", Toast.LENGTH_LONG).show();
// Intent myIntent = new Intent(MainActivity.this, AlarmDetails.class);
// pendingIntent = PendingIntent.getService(MainActivity.this, 0, myIntent, 0);
if (RadiobuttonOn.isChecked()==true) {
// Intent myIntent = new Intent(MainActivity.this, AlarmDetails.class);
// pendingIntentOn = PendingIntent.getService(MainActivity.this, 0, myIntent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, calOn.getTimeInMillis(), pendingIntentOn);
}
if (RadiobuttonOff.isChecked()==true) {
// Intent myIntentoff = new Intent(MainActivity.this, AlarmDetailsoff.class);
// pendingIntentOff = PendingIntent.getService(MainActivity.this, 0, myIntentoff, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, calOn.getTimeInMillis(), pendingIntentOff);
}
}
});
dialogCANCELbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "Cancel!", Toast.LENGTH_LONG).show();
if (RadiobuttonOn.isChecked()==true){
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
alarmManager.cancel(pendingIntentOn);
}
if (RadiobuttonOff.isChecked()==true){
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
alarmManager.cancel(pendingIntentOff);
}
}
});
dialog.show();
}
public class WifiScanReceiver extends BroadcastReceiver {
public void onReceive(Context c, Intent intent) {
List<ScanResult> wireless = wifi.getScanResults(); // Returns a <list> of scanResults
for (ScanResult scan : wireless) {
if (scan.SSID.equals("EasyControl")) {
boolean cont = true;
// WiFiONOFFButton.setChecked(true);
if (cont) {
WifiConfiguration wc = new WifiConfiguration();
wc.SSID = String.format("\"%s\"", networkSSID);
wc.preSharedKey = String.format("\"%s\"", networkPass);
wc.hiddenSSID = true;
wc.priority = 1;
wc.status = WifiConfiguration.Status.ENABLED;
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wc.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
int netid = wifi.addNetwork(wc);
wifi.enableNetwork(netid, true);
wifi.reconnect();
}
}
}
}
}
protected void onPause() {
unregisterReceiver(wifiReciever);
super.onPause();
}
protected void onResume() {
registerReceiver(wifiReciever, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
super.onResume();
}
/* public void disableWifi(Context context, Boolean bool) {
// WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
if(bool)
wifi.setWifiEnabled(false);
else
wifi.setWifiEnabled(true);
public static boolean IsWiFiConnected(Context context) {
ConnectivityManager connectivity = (ConnectivityManager) context
.getApplicationContext().getSystemService(
Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null) {
for (int i = 0; i < info.length; i++) {
if (info[i].getTypeName().equals("WIFI")
&& info[i].isConnected())
return true;
}
}
}
return false;
} }*/
}
在MyClienttask中
package com.example.pci.calling;
import android.content.Context;
import android.os.AsyncTask;
import android.widget.TextView;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.Socket;
import java.net.UnknownHostException;
public class MyClienttask extends AsyncTask<Void, byte[], Void> {
String dstAddress = "192.168.4.1";
int dstPort = 666;
String response = "";
@Override
protected Void doInBackground(Void... arg0) {
MainActivity.socket = null;
try {
MainActivity.socket = new Socket(dstAddress, dstPort);
if (MainActivity.socket.isConnected()) {
MainActivity.socket_connect=true;
// Connect();
// Connect.setText("Disconnect");
MainActivity. nis = MainActivity.socket.getInputStream();
MainActivity. nos = MainActivity.socket.getOutputStream();
MainActivity. nos.write("A".getBytes());
byte[] buffer = new byte[4096];
int read =MainActivity. nis.read(buffer, 0, 4096);
while (read != -1) {
byte[] tempdata = new byte[read];
System.arraycopy(buffer, 0, tempdata, 0, read);
publishProgress(new byte[][]{tempdata});
read = MainActivity.nis.read(buffer, 0, 4096);
}
// datasend2();
} else {
MainActivity.socket_connect=false;
// Disconnect();
// Status.setText("Disconnected");
// btnConnect.setText("Disconnect");
}
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response = "UnknownHostException: " + e.toString();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response = "IOException: " + e.toString();
} finally {
if (MainActivity.socket != null) {
try {
MainActivity. socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
return null;
}
protected void onProgressUpdate(byte[]... values) {
String toReceive;// = new String();
try {
toReceive = new String(values[0], "ISO-8859-1");
MainActivity.receivedata.setText(toReceive);
} catch (UnsupportedEncodingException e2) {
e2.printStackTrace();
}
}
}
在AlarmDetails中
package com.example.pci.calling;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Handler;
import android.os.IBinder;
import android.support.v4.app.NotificationCompat;
import android.widget.Toast;
import java.io.IOException;
import java.util.List;
public class AlarmDetails extends Service {
final Handler handler = new Handler();
private Boolean stage =false;
// flag for Internet connection status
Boolean isInternetPresent = false;
String networkSSID = "EasyControl";
String networkPass = "easy1234";
WifiScanReceiver wifiReciever;
// Connection detector class
ConnectionDetector cd;
WifiManager wifi;
@Override
public void onCreate() {
// TODO Auto-generated method stub
Toast.makeText(this, "MyAlarmService.onCreate()", Toast.LENGTH_LONG).show();
MainActivity.Vsend.setText("OnCreate");
// cd = new ConnectionDetector(getApplicationContext());
// isInternetPresent = cd.isConnectingToInternet();
wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
// Intent intent = new Intent(this, MainActivity.class);
// PendingIntent pIntent = PendingIntent.getActivity(this, 0, intent, 0);
// build notification
// the addAction re-use the same intent to keep the example short
}
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
Toast.makeText(this, "MyAlarmService.onBind()", Toast.LENGTH_LONG).show();
return null;
}
@Override
public void onStart(Intent intent, int startId) {
// TODO Auto-generated method stub
super.onStart(intent, startId);
if (wifi.isWifiEnabled()){
MainActivity. wifi_connect=false;
}else{
wifi.setWifiEnabled(true);
handler.postDelayed(new Runnable() {
@Override
public void run() {
//Do something after 800ms
}
}, 100000);
// MainActivity. wifi_connect=true;
}
handler.postDelayed(new Runnable() {
@Override
public void run() {
//Do something after 800ms
wifiReciever = new WifiScanReceiver();
wifi.startScan();
}
}, 100000);
if (MainActivity.ConnectWiFi.isChecked()) {
// MainActivity.ConnectWiFi.setChecked(true);
Toast.makeText(this, "MyAlarmService.onStart()", Toast.LENGTH_LONG).show();
handler.postDelayed(new Runnable() {
@Override
public void run() {
//Do something after 800ms
MainActivity.Vsend.setText("OnStart");
MainActivity.Vsend.performClick();
}
}, 1000);
}else {
MainActivity.ConnectWiFi.performClick();
handler.postDelayed(new Runnable() {
@Override
public void run() {
//Do something after 800ms
MainActivity.Vsend.setText("OnStart1");
MainActivity.Vsend.performClick();
stage=true;
}
}, 1000);
}
/* if (isInternetPresent) {
MainActivity.Asend.setText("Hoche");
}else{
MainActivity.Asend.setText("Onno Vabe");
}*/
if (MainActivity.socket_connect == true){
MainActivity.Asend.setText("Hoche");
}else{
MainActivity.Asend.setText("Onno Vabe");
}
NotificationCompat.Builder builder =
new NotificationCompat.Builder(this)
// .setSmallIcon(R.drawable.btswon)
.setContentTitle("My Notification Title")
.setDefaults(Notification.DEFAULT_SOUND)
.setContentText("Something interesting happened");
int NOTIFICATION_ID = 12345;
Intent targetIntent = new Intent(this, MainActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, targetIntent, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(contentIntent);
NotificationManager nManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
nManager.notify(NOTIFICATION_ID, builder.build());
handler.postDelayed(new Runnable() {
@Override
public void run() {
//Do something after 800ms
if(stage==false){
MainActivity.ConnectWiFi.setChecked(true); stopSelf();
}else{
MainActivity.ConnectWiFi.setChecked(false); stopSelf();
}
}
}, 1000);
}
@Override
public boolean onUnbind(Intent intent) {
// TODO Auto-generated method stub
Toast.makeText(this, "MyAlarmService.onUnbind()", Toast.LENGTH_LONG).show();
return super.onUnbind(intent);
}
@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
Toast.makeText(this, "MyAlarmService.onDestroy()", Toast.LENGTH_LONG).show();
MainActivity.Vsend.setText("Done");
}
public class WifiScanReceiver extends BroadcastReceiver {
public void onReceive(Context c, Intent intent) {
List<ScanResult> wireless = wifi.getScanResults(); // Returns a <list> of scanResults
for (ScanResult scan : wireless) {
if (scan.SSID.equals("EasyControl")) {
boolean cont = true;
// WiFiONOFFButton.setChecked(true);
if (cont) {
WifiConfiguration wc = new WifiConfiguration();
wc.SSID = String.format("\"%s\"", networkSSID);
wc.preSharedKey = String.format("\"%s\"", networkPass);
wc.hiddenSSID = true;
wc.priority = 1;
wc.status = WifiConfiguration.Status.ENABLED;
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wc.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
int netid = wifi.addNetwork(wc);
wifi.enableNetwork(netid, true);
wifi.reconnect();
}
}
}
}
}
}
这可能来自****公共类AlarmDetails扩展服务**** 1.连接特定的WiFi AP。 2.使用Alarm Manager我想向服务器发送一些数据，那时我怎么知道我的手机连接了特定的SSID，如果没有如何连接公共类AlarmDetails extends Service class
答案 0 :(得分：0)
您可以使用ConnectivityManager检查wifi是否已连接，您必须在最清晰的文件中添加权限：
ConnectivityManager manager = (ConnectivityManager) this.getSystemService(this.CONNECTIVITY_SERVICE);
boolean isWifi = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();
if (isWifi) {
}
清单中的权限：
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />