开启android手机的wifi热点

因为无线wifi不能和wufi热点同时打开,所以开启wifi热点的时候要监测是否打开了wifi,打开了就要关闭

wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);

	private void startWifiAp() {
		handler = new Handler();
		if (wifiManager.isWifiEnabled()) {
			closeWifiHandler = new Handler() {
				@Override
				public void handleMessage(Message msg) {
					startWifiApTh();
					super.handleMessage(msg);
				}
			};
			cwt = new CloseWifiThread();
			Thread thread = new Thread(cwt);
			thread.start();

		}else{
			startWifiApTh();
		}


	}

	class CloseWifiThread implements Runnable {
		public CloseWifiThread() {
			super();
		}

		@Override
		public void run() {
			int state = wifiManager.getWifiState();
			if (state == WifiManager.WIFI_STATE_ENABLED) {
				wifiManager.setWifiEnabled(false);
				closeWifiHandler.postDelayed(cwt, 1000);
			} else if (state == WifiManager.WIFI_STATE_DISABLING) {
				closeWifiHandler.postDelayed(cwt, 1000);
			}else if(state == WifiManager.WIFI_STATE_DISABLED){
				closeWifiHandler.sendEmptyMessage(0);
			}

		}
	}

	private void startWifiApTh(){
		swat = new StratWifiApThread();
		Thread thread = new Thread(swat);
		thread.start();
	}
	class StratWifiApThread implements Runnable {
		public StratWifiApThread() {
			super();
		}

		@Override
		public void run() {
			// TODO Auto-generated method stub
			WifiUtil mWifiUtil = new WifiUtil();
			int state = mWifiUtil.getWifiApState(wifiManager);
			if (state == WifiUtil.WIFI_AP_STATE_DISABLED) {
				mWifiUtil.stratWifiAp(wifiManager);
				handler.postDelayed(swat, 1000);
			} else if (state == WifiUtil.WIFI_AP_STATE_ENABLING
					|| state == WifiUtil.WIFI_AP_STATE_FAILED) {
				handler.postDelayed(swat, 1000);
			}else if (state == WifiUtil.WIFI_AP_STATE_ENABLED){
				Toast.makeText(ActivityForAndroid.this, "已开启wlan热点", 2000).show();
			}
		}

	}

public class WifiUtil {

	public static final int WIFI_AP_STATE_DISABLING = 0;
	public static final int WIFI_AP_STATE_DISABLED = 1;
	public static final int WIFI_AP_STATE_ENABLING = 2;
	public static final int WIFI_AP_STATE_ENABLED = 3;
	public static final int WIFI_AP_STATE_FAILED = 4;

	public void stratWifiAp(WifiManager wifiManager) {
		// WifiManager wifi = (WifiManager)
		// getSystemService(Context.WIFI_SERVICE);
		// wifiManager.setWifiEnabled(false);
		Method method1 = null;
		try {
			method1 = wifiManager.getClass().getMethod("setWifiApEnabled",
					WifiConfiguration.class, boolean.class);
			WifiConfiguration netConfig = new WifiConfiguration();
			//wifi热点名字
			netConfig.SSID = "\" T  E S T \"";
			netConfig.allowedAuthAlgorithms
					.set(WifiConfiguration.AuthAlgorithm.OPEN);
			netConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
			netConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
			netConfig.allowedKeyManagement
					.set(WifiConfiguration.KeyMgmt.WPA_PSK);
			netConfig.allowedPairwiseCiphers
					.set(WifiConfiguration.PairwiseCipher.CCMP);
			netConfig.allowedPairwiseCiphers
					.set(WifiConfiguration.PairwiseCipher.TKIP);
			netConfig.allowedGroupCiphers
					.set(WifiConfiguration.GroupCipher.CCMP);
			netConfig.allowedGroupCiphers
					.set(WifiConfiguration.GroupCipher.TKIP);
			//密码
			netConfig.preSharedKey = "\"11111111\"";

			method1.invoke(wifiManager, netConfig, true);
			// Method method2 =
			// wifiManager.getClass().getMethod("getWifiApState");
			// int state = (Integer) method2.invoke(wifiManager);
			// Log.i("wifi state" + state);
		} catch (IllegalArgumentException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SecurityException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

	public int getWifiApState(WifiManager wifiManager) {
		try {
			Method method = wifiManager.getClass().getMethod("getWifiApState");
			int i = (Integer) method.invoke(wifiManager);
			Log.i("wifi state:  " + i);
			return i;
		} catch (Exception e) {
			Log.i("Cannot get WiFi AP state" + e);
			return WIFI_AP_STATE_FAILED;
		}
	}
}

上面的代码用到handler每隔1秒post线程来监测是否关闭了wifi 和是否打开了wifi热点..不知道还有没有其他更好的方法..

wifiutil类的打开wifi热点的代码用到java的反射类 还在学习..