CallHandlerPlugin.java 文件源码

/**
 * Retrieve internal id of call handler as saved in databases It should be
 * some negative < SipProfile.INVALID_ID number
 * 
 * @param ctxt Application context
 * @param packageName name of the call handler package
 * @return the id of this call handler in databases
 */
public static Long getAccountIdForCallHandler(Context ctxt, String packageName) {
    SharedPreferences prefs = ctxt.getSharedPreferences("handlerCache", Context.MODE_PRIVATE);

    long accountId = SipProfile.INVALID_ID;
    try {
        accountId = prefs.getLong(VIRTUAL_ACC_PREFIX + packageName, SipProfile.INVALID_ID);
    } catch (Exception e) {
        Log.e(THIS_FILE, "Can't retrieve call handler cache id - reset");
    }
    if (accountId == SipProfile.INVALID_ID) {
        // We never seen this one, add a new entry for account id
        int maxAcc = prefs.getInt(VIRTUAL_ACC_MAX_ENTRIES, 0x0);
        int currentEntry = maxAcc + 1;
        accountId = SipProfile.INVALID_ID - (long) currentEntry;
        Editor edt = prefs.edit();
        edt.putLong(VIRTUAL_ACC_PREFIX + packageName, accountId);
        edt.putInt(VIRTUAL_ACC_MAX_ENTRIES, currentEntry);
        edt.commit();
    }
    return accountId;
}