Merge "Guard against exception from TelephonyManager.getMeid()" into main

services/devicepolicy/java/com/android/server/devicepolicy/EnterpriseSpecificIdCalculator.java

@@ -53,7 +53,17 @@ class EnterpriseSpecificIdCalculator {
         TelephonyManager telephonyService = context.getSystemService(TelephonyManager.class);
         Preconditions.checkState(telephonyService != null, "Unable to access telephony service");
         mImei = telephonyService.getImei(0);
-        mMeid = telephonyService.getMeid(0);
+        String meid;
+        try {
+            meid = telephonyService.getMeid(0);
+        } catch (UnsupportedOperationException doesNotSupportCdma) {
+            // Instead of catching the exception, we could check for FEATURE_TELEPHONY_CDMA.
+            // However that runs the risk of changing a device's existing ESID if on these devices
+            // telephonyService.getMeid() actually returns non-null even when the device does not
+            // declare FEATURE_TELEPHONY_CDMA.
+            meid = null;
+        }
+        mMeid = meid;
         mSerialNumber = Build.getSerial();
         WifiManager wifiManager = context.getSystemService(WifiManager.class);
         Preconditions.checkState(wifiManager != null, "Unable to access WiFi service");