Java Development

[YamilBracho]

Hi I am using this rotuine to check if my app has internet access to conect to some web services.

public static boolean isInternetAvailable() {
		boolean result = false;

		// Toma transportes disponibles
		int[] transportArray = TransportInfo.getAvailableTransportTypes();
		for (int i = transportArray.length - 1; i > - 1; i--) {
			if (TransportInfo.hasSufficientCoverage(i)) {
				result = true;
				break;
			}
		}

		return result;
	}

 But this code sometimes work. I am running in the simulator (and phones, specially with OS 7) and I am positive I have network acess, however the method return false sometimes...

Is there another safer way to check this ?

[YamilBracho]

After a check, the problem is with version 7.0. 5.0 and 6 works fine.

Must use Manage Connection to reset Mobile NetWork and WI-FI. 

Then I call two web services (in this case they are in tah same server). My result are :

5.0
Transporte WIFI
http://XXX.XXX.XXX.XXX/MyWebService.asmx;deviceside=true
Response OK

Transporte WIFI
http://XXX.XXX.XXX.XXX/MyWebService.asmx2;deviceside=true
Response OK

-------------------------------------------------------------------------------------------
7.0
Erratic - Must use Manage Connection to reset Mobile NetWork and WI-FI
Transporte WIFI
http://XXX.XXX.XXX.XXX/MyWebService.asmx;deviceside=true
Response OK

Transporte WIFI
http://XXX.XXX.XXX.XXX/MyWebService.asmx2;deviceside=false;ConnectionUID=S 00005;ConnectionTimeout=10000
Time out...

Note than in the second call it does not recognize that I running this app in the simulator..!!!!

My code to get the available transpor is :

String url = mUrl;

ConnectionFactory cf = new MyConnectionFactory();
ConnectionDescriptor cd = cf.getConnection(url);
url = cd.getUrl();

mHttpTransport = new HttpTransport(url);
mHttpTransport.call(mSoapAction, mEnvelope);
Object response = mEnvelope.getResponse();
mResponse = response.toString().trim();

....

class MyConnectionFactory extends ConnectionFactory {

	public MyConnectionFactory() {
		setPreferredTransportTypes(new int[] {
				TransportInfo.TRANSPORT_TCP_WIFI,
				TransportInfo.TRANSPORT_MDS,
				TransportInfo.TRANSPORT_TCP_CELLULAR,
				TransportInfo.TRANSPORT_WAP2 });

		setDisallowedTransportTypes(new int[] {
				TransportInfo.TRANSPORT_WAP, TransportInfo.TRANSPORT_BIS_B });

		setAttemptsLimit(10);
		setConnectionTimeout(10000);
		setTimeLimit(10000);
	}
}

Is there a special treatment for OS 7 or something is wrong in my code ?

TIA

[simon_hain]

i use http://www.blackberry.com/developers/docs/7.1.0api/net/rim/device/api/system/CoverageInfo.html#isCov...

[YamilBracho]

Thanks Simon.

I rewrote my code to :

public static boolean isInternetAvailable() {
	boolean result = false;

	int[] coverageArray = { CoverageInfo.COVERAGE_BIS_B,
			CoverageInfo.COVERAGE_DIRECT, CoverageInfo.COVERAGE_MDS };

	int[] wafArray = { RadioInfo.WAF_3GPP, RadioInfo.WAF_CDMA,
			RadioInfo.WAF_IDEN, RadioInfo.WAF_WLAN };

	int coverageLen = coverageArray.length;
	int wafLen = wafArray.length;
	for (int i=0; i < coverageLen && !result; i++) {
		for (int j = 0; j < wafLen; j++) {
			if (CoverageInfo.isCoverageSufficient(coverageArray[i],
					wafArray[j], false)) {
				result = true;
				break;
			}
		}
	}
	
	return result;
}	

 Is it OK ? It looks like it working fine now..

[simon_hain]

COVERAGE_DIRECT is the lowest possible value, and if you don't use the waf parameter it is ignored.
afaik you can just use isCoverageSufficient(CoverageInfo.COVERAGE_DIRECT) and be done with it, no need to iterate.

[YamilBracho · Accepted solution]

Simon, so just

public static boolean isInternetAvailable() {
	return CoverageInfo.isCoverageSufficient(CoverageInfo.COVERAGE_DIRECT); 
}

 It run fine...

Thanks a lot Simon...!!!!!

[simon_hain]

yes, sometimes it is really that simple