条件：WiFi 5G自动切换，当小于-69db和备选WiFi大于-60db是切换

    public static int mchangedelay=0;     


    /**
         * Ask WifiStateMachine permission to switch :
         * if user is currently streaming voice traffic,
         * then we should not be allowed to switch regardless of the delta
         */
		 if(YlDefineSystemProperties.MMI_BOOL_WIFI_5G_AUTO_JOIN)
		 {  
	         if ((candidate != null) && (currentConfiguration != null)) 
			 {
			    mToast = Toast.makeText(mContext,"rssi5 =" + currentConfiguration.visibility.rssi5+ ", "+candidate.visibility.rssi5,Toast.LENGTH_SHORT);
		        mToast.show();
				if(mchangedelay>0)
	                  mchangedelay--;
	            if((candidate.visibility.rssi5!=-127) && (currentConfiguration.visibility.rssi5!=-127) && (mchangedelay==0))
	            	{
	            	    if((currentConfiguration.visibility.rssi5<-69) && (candidate.visibility.rssi5>-60))
	            	    {
	            	            mchangedelay=4;  
				                networkDelta=100;
	            	    }
	            	}
	         }
		 }