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android cell id

问题描述:

I would like to get the cid from my cell phone , I am currently using this code to do that :

GsmCellLocation gsmLocation = (GsmCellLocation)telephonyManager.getCellLocation();

int Cid = gsmLocation.getCid();

Log.e("#############","current cid is: "+Cid);

int lac = gsmLocation.getLac();

Log.e("#############","current lac is: "+lac);

this returns something like 301 or 6061.

I was browsing some example codes and found this :

/**

* Seems that cid and lac shall be in hex. Cid should be padded with zero's

* to 8 numbers if UMTS (3G) cell, otherwise to 4 numbers. Mcc padded to 3

* numbers. Mnc padded to 2 numbers.

*/

try {

// Update the current location

updateLocation(getPaddedHex(cid, cellPadding), getPaddedHex(lac, 4),

getPaddedInt(mnc, 2), getPaddedInt(mcc, 3));

strResult = "Position updated!";

} catch (IOException e) {

strResult = "Error!\n" + e.getMessage();

}

// Show an info Toast with the results of the updateLocation

// call.

Toast t = Toast.makeText(getApplicationContext(), strResult,

Toast.LENGTH_LONG);

t.setGravity(Gravity.CENTER_VERTICAL, 0, 0);

t.show();}});

}

/**

* Convert an int to an hex String and pad with 0's up to minLen.

*/

String getPaddedHex(int nr, int minLen) {

String str = Integer.toHexString(nr);

if (str != null) {

while (str.length() < minLen) {

str = "0" + str;

}

}

return str;

}

/**

* Convert an int to String and pad with 0's up to minLen.

*/

String getPaddedInt(int nr, int minLen) {

String str = Integer.toString(nr);

if (str != null) {

while (str.length() < minLen) {

str = "0" + str;

}

}

return str;

}

Isn't the number from the GsmCellLocation correct or I need to alter the results as shown in the example?

what is the difference? I know from the documentation that the cid could be -1 (unknown) or 0xffff max value, the 0xffff is for 2g or 3g networks?

网友答案:

That code doesn't really alter the numbers. It's only displaying them differently as hex or with more zeros on the left.

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