एंड्रॉइड 2.3 वाईफाई हॉटस्पॉट एपीआई

Question

वाईफ़ाई हॉटस्पॉट बनाने के लिए एंड्रॉइड 2.2 (फियोयो) में एपीआई कॉल करने की आवश्यकता है (जैसा कि टिथरिंग और पोर्टेबल हॉटस्पॉट सेटिंग्स आइटम में देखा गया है)।

Answer 1

कोई आधिकारिक API नहीं है, लेकिन आप इसे संभालने के लिए प्रतिबिंब का उपयोग कर सकते हैं। मुझे कुछ कहना है, इसकी अनुशंसा नहीं की जाती है, हालांकि मैं कहता हूं, अगर Google किसी भी कारण से एपीआई प्रदान नहीं करना चाहता है तो इसे पेंच करें।

नीचे मेरे आवेदन में उपयोग की जाने वाली गतिविधि का कोड है, जहां उपयोगकर्ता वाईफ़ाई एपी को सक्षम/अक्षम कर सकता है। जब आप वाईफ़ाई एपी सक्षम करते हैं, आमतौर पर नियमित वाईफ़ाई बंद कर दिया जाएगा, इसलिए उपयोगकर्ता फिर से वाईफ़ाई एपी को अक्षम कर देता है, हम फिर से नियमित वाईफाई सक्रिय कर देंगे।

नीचे दिए गए कोड नमूने को मेरी परियोजनाओं में से एक से लिया गया है, उम्मीद है कि आप आसानी से तर्क प्राप्त कर सकते हैं। अगर आपको कोई शंका हो तो मुझे बतायें।

कोड नेक्सस वन 2.2 (और मुझे लगता है कि 2.3) के साथ-साथ सैमसंग गैलेक्सी एस (2.2) पर भी परीक्षण किया जाता है।

package com.myapp.android.activity.wifi; 

import android.app.ProgressDialog; 
import android.content.Context; 
import android.net.wifi.WifiConfiguration; 
import android.net.wifi.WifiManager; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.view.View; 
import android.view.WindowManager; 
import android.widget.Button; 

import java.lang.reflect.Method; 

public class WifiAP extends BaseActivity { 

    // boolean mIsWifiEnabled = false; 
    private static final int WIFI_AP_STATE_UNKNOWN = -1; 
    private static final int WIFI_AP_STATE_DISABLING = 0; 
    private static final int WIFI_AP_STATE_DISABLED = 1; 
    private static final int WIFI_AP_STATE_ENABLING = 2; 
    private static final int WIFI_AP_STATE_ENABLED = 3; 
    private static final int WIFI_AP_STATE_FAILED = 4; 

    private final String[] WIFI_STATE_TEXTSTATE = new String[] { 
     "DISABLING","DISABLED","ENABLING","ENABLED","FAILED" 
    }; 

    private WifiManager wifi; 

    @Override 
    protected void onCreate(Bundle icicle) { 
     super.onCreate(icicle); 
     setContentView(R.layout.wifi); 
     getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD 
       |WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON 
       |WindowManager.LayoutParams.FLAG_DIM_BEHIND 
     ); 

     wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE); 
    } 

    @Override 
    public void onResume() { 
     super.onResume(); 
     updateStatusDisplay(); 
    } 

    public void toggleWifi(View v) { 
     boolean wifiApIsOn = getWifiAPState()==WIFI_AP_STATE_ENABLED || getWifiAPState()==WIFI_AP_STATE_ENABLING; 
     new SetWifiAPTask(!wifiApIsOn,false).execute(); 
    } 

    public void close(View v) { 
     boolean wifiApIsOn = getWifiAPState()==WIFI_AP_STATE_ENABLED || getWifiAPState()==WIFI_AP_STATE_ENABLING; 
     if (wifiApIsOn) { 
      new SetWifiAPTask(false,true).execute(); 
     } else { 
      finish(); 
     } 
    } 


    /** 
    * Endable/disable wifi 
    * @param enabled 
    * @return WifiAP state 
    */ 
    private int setWifiApEnabled(boolean enabled) { 
     Log.d("WifiAP", "*** setWifiApEnabled CALLED **** " + enabled); 
     if (enabled && wifi.getConnectionInfo() !=null) { 
      wifi.setWifiEnabled(false); 
      try {Thread.sleep(1500);} catch (Exception e) {} 
     } 

     //int duration = Toast.LENGTH_LONG; 
     //String toastText = "MobileAP status: "; 
     int state = WIFI_AP_STATE_UNKNOWN; 
     try { 
      wifi.setWifiEnabled(false); 
      Method method1 = wifi.getClass().getMethod("setWifiApEnabled", 
       WifiConfiguration.class, boolean.class); 
      method1.invoke(wifi, null, 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(); 
     } 

     if (!enabled) { 
      int loopMax = 10; 
      while (loopMax>0 && (getWifiAPState()==WIFI_AP_STATE_DISABLING 
        || getWifiAPState()==WIFI_AP_STATE_ENABLED 
        || getWifiAPState()==WIFI_AP_STATE_FAILED)) { 
       try {Thread.sleep(500);loopMax--;} catch (Exception e) {} 
      } 
      wifi.setWifiEnabled(true); 
     } else if (enabled) { 
      int loopMax = 10; 
      while (loopMax>0 && (getWifiAPState()==WIFI_AP_STATE_ENABLING 
        || getWifiAPState()==WIFI_AP_STATE_DISABLED 
        || getWifiAPState()==WIFI_AP_STATE_FAILED)) { 
       try {Thread.sleep(500);loopMax--;} catch (Exception e) {} 
      } 
     } 

     return state; 
    } 


    private int getWifiAPState() { 
     int state = WIFI_AP_STATE_UNKNOWN; 
     try { 
      Method method2 = wifi.getClass().getMethod("getWifiApState"); 
      state = (Integer) method2.invoke(wifi); 
     } catch (Exception e) {} 
     Log.d("WifiAP", "getWifiAPState.state " + (state==-1?"UNKNOWN":WIFI_STATE_TEXTSTATE[state])); 
     return state; 
    } 

    private void updateStatusDisplay() { 

     if (getWifiAPState()==WIFI_AP_STATE_ENABLED || getWifiAPState()==WIFI_AP_STATE_ENABLING) { 
      ((Button)findViewById(R.id.btnWifiToggle)).setText("Turn off"); 
      findViewById(R.id.bg).setBackgroundResource(R.drawable.bg_wifi_on); 
     } else { 
      ((Button)findViewById(R.id.btnWifiToggle)).setText("Turn on"); 
      findViewById(R.id.bg).setBackgroundResource(R.drawable.bg_wifi_off); 
     } 

    } 


    class SetWifiAPTask extends AsyncTask<Void, Void, Void> { 

     boolean mMode; 
     boolean mFinish; 

     public SetWifiAPTask(boolean mode, boolean finish) { 
      mMode = mode; 
      mFinish = finish; 
     } 

     ProgressDialog d = new ProgressDialog(WifiAP.this); 

     @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();} catch (IllegalArgumentException e) {}; 
      updateStatusDisplay(); 
      if (mFinish) finish(); 
     } 

     @Override 
     protected Void doInBackground(Void... params) { 
      setWifiApEnabled(mMode); 
      return null; 
     } 
    } 


} 

Answer 2

इसके लिए कोई सार्वजनिक एपीआई नहीं है।

Answer 3

हो रही में रुचि रखते किसी के लिए यह आईसीएस पर काम कर रहा है, अपने एपी नाम स्थापित करने, और/या अपने ही वर्ग में सभी WifiAP कोड रखने मैं अद्यतन और अन्य जवाब में दी गई कोड पर सुधार हुआ है:

WifiAP.java:

package com.demo.wifiap; 

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.demo.WifiAPActivity; 

/** 
* Handle enabling and disabling of WiFi AP 
* @author http://stackoverflow.com/a/7049074/1233435 
*/ 
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 AP " + (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(); 
       WifiAPActivity.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; 
     } 
    } 
} 

WifiAPActivity.java:

package com.demo; 

import android.app.Activity; 
import android.content.Context; 
import android.net.wifi.WifiManager; 
import android.os.Bundle; 
import android.view.View; 
import android.view.WindowManager; 
import android.widget.Button; 

import com.demo.WifiAP; 

public class WifiAPActivity extends Activity { 
    //private String TAG = "WifiAPActivity"; 

    boolean wasAPEnabled = false; 
    static WifiAP wifiAp; 
    private WifiManager wifi; 
    static Button btnWifiToggle; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.wifi); 

     btnWifiToggle = (Button) findViewById(R.id.btnWifiToggle); 

     wifiAp = new WifiAP(); 
     wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE); 

     btnWifiToggle.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       wifiAp.toggleWiFiAP(wifi, WifiAPActivity.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, WifiAPActivity.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, WifiAPActivity.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.setText("Turn off"); 
      //findViewById(R.id.bg).setBackgroundResource(R.drawable.bg_wifi_on); 
     } else { 
      btnWifiToggle.setText("Turn on"); 
      //findViewById(R.id.bg).setBackgroundResource(R.drawable.bg_wifi_off); 
     } 
    } 
} 

wif i.xml:

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" > 

    <Button 
     android:id="@+id/btnWifiToggle" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Button" /> 

</LinearLayout> 

अनुमतियाँ:

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission> 
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>